Initial Commit

inc/database/broadcasts/class-broadcast-query.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * Class used for querying broadcasts.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Posts
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Broadcasts;
+
+use WP_Ultimo\Database\Posts\Post_Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying broadcasts.
+ *
+ * @since 2.0.0
+ */
+class Broadcast_Query extends Post_Query {
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'post';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'posts';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Broadcast';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'broadcasts';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Modifies the query call to add our types.
+	 *
+	 * @since 2.0.0
+	 *
+	 * @param array $query Query parameters being passed.
+	 * @return array
+	 */
+	public function query($query = array()) {
+
+		$query['type__in'] = array('broadcast_email', 'broadcast_notice');
+
+		return parent::query($query);
+
+	} // end query;
+
+} // end class Broadcast_Query;

inc/database/checkout-forms/class-checkout-form-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying forms.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Checkout_Forms
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Checkout_Forms;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying forms.
+ *
+ * @since 2.0.0
+ */
+class Checkout_Form_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'forms';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'f';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Checkout_Forms\\Checkout_Forms_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'form';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'forms';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Checkout_Form';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'forms';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Checkout_Form_Query;

inc/database/checkout-forms/class-checkout-forms-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying forms' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Checkout_Forms
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Checkout_Forms;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_formmeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Checkout_Forms_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'formmeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Posts constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_form_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_form_id (wu_form_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+} // end class Checkout_Forms_Meta_Table;

inc/database/checkout-forms/class-checkout-forms-schema.php

@@ -0,0 +1,114 @@
+<?php
+/**
+ * Checkout_Form schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Checkout_Forms
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Checkout_Forms;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Checkout_Forms Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Checkout_Forms_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true,
+		),
+
+		array(
+			'name'       => 'name',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'slug',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'active',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'settings',
+			'type'       => 'longtext',
+			'default'    => '',
+			'transition' => true,
+			'allow_null' => false,
+		),
+
+		array(
+			'name'       => 'custom_css',
+			'type'       => 'longtext',
+			'default'    => '',
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'allowed_countries',
+			'type'       => 'text',
+			'default'    => '',
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Checkout_Forms_Schema;

inc/database/checkout-forms/class-checkout-forms-table.php

@@ -0,0 +1,121 @@
+<?php
+/**
+ * Class used for querying events.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Event
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Checkout_Forms;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_events" database table
+ *
+ * @since 2.0.0
+ */
+final class Checkout_Forms_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'forms';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Event constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) NOT NULL auto_increment,
+			name tinytext NOT NULL DEFAULT '',
+			slug varchar(255),
+			active tinyint(4) default 1,
+			settings longtext DEFAULT NULL,
+			custom_css longtext DEFAULT NULL,
+			allowed_countries text DEFAULT NULL,
+			date_created datetime DEFAULT NULL,
+			date_modified datetime DEFAULT NULL,
+			PRIMARY KEY (id)";
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Checkout_Forms_Table;

inc/database/customers/class-customer-query.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * Class used for querying customers.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Customers
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Customers;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying webhooks.
+ *
+ * @since 2.0.0
+ */
+class Customer_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'customers';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'c';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Customers\\Customers_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'customer';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'customers';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Customer';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'customers';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		// $query['type'] = 'customer';
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Customer_Query;

inc/database/customers/class-customers-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying customers' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Customers
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Customers;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_customermeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Customers_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'customermeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Customers constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_customer_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_customer_id (wu_customer_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+} // end class Customers_Meta_Table;

inc/database/customers/class-customers-schema.php

@@ -0,0 +1,133 @@
+<?php
+/**
+ * Customer schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Customers
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Customers;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Customers Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Customers_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		// id
+		array(
+			'name'       => 'id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'extra'      => 'auto_increment',
+			'primary'    => true,
+			'sortable'   => true,
+			'searchable' => true,
+		),
+
+		// user_id
+		array(
+			'name'       => 'user_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'searchable' => true,
+		),
+
+		array(
+			'name'       => 'type',
+			'type'       => 'varchar',
+			'default'    => 'customer',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		// date_registered
+		array(
+			'name'       => 'date_registered',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// email_verification
+		array(
+			'name'       => 'email_verification',
+			'type'       => 'enum(\'verified\', \'pending\', \'none\')',
+			'default'    => 'none',
+			'transition' => true,
+		),
+
+		// last_login
+		array(
+			'name'       => 'last_login',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// has_trialed
+		array(
+			'name'       => 'has_trialed',
+			'type'       => 'smallint',
+			'length'     => '',
+			'unsigned'   => true,
+			'default'    => null,
+			'transition' => true,
+			'allow_null' => true,
+		),
+
+		// vip
+		array(
+			'name'       => 'vip',
+			'type'       => 'smallint',
+			'length'     => '',
+			'unsigned'   => true,
+			'default'    => 0,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		// ips
+		array(
+			'name'       => 'ips',
+			'type'       => 'longtext',
+			'default'    => '',
+			'searchable' => true,
+			'allow_null' => true,
+		),
+
+		// Added on 2.0 beta 7
+		array(
+			'name'       => 'signup_form',
+			'type'       => 'varchar',
+			'default'    => 'by-admin',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+	);
+
+} // end class Customers_Schema;

inc/database/customers/class-customers-table.php

@@ -0,0 +1,189 @@
+<?php
+/**
+ * Class used for querying domain mappings.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Customer
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Customers;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_customers" database table
+ *
+ * @since 2.0.0
+ */
+final class Customers_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'customers';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20210508' => 20_210_508,
+		'2.0.1-revision.20210607' => 20_210_607,
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Customer constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+			user_id bigint(20) unsigned NOT NULL DEFAULT '0',
+			type varchar(20) NOT NULL DEFAULT 'customer',
+			email_verification enum('verified', 'pending', 'none') DEFAULT 'none',
+			date_modified datetime NULL,
+			date_registered datetime NULL,
+			last_login datetime NULL,
+			has_trialed smallint unsigned DEFAULT NULL,
+			vip smallint unsigned DEFAULT '0',
+			ips longtext,
+			signup_form varchar(40) DEFAULT 'by-admin',
+			PRIMARY KEY (id),
+			KEY user_id (user_id)";
+
+	} // end set_schema;
+
+	/**
+	 * Adds the signup_form column.
+	 *
+	 * This does not work on older versions of MySQl, so we needed
+	 * the other migration below.
+	 *
+	 * @since 2.0.0
+	 * @return bool
+	 */
+	protected function __20210508() { // phpcs:ignore
+
+		$result = $this->column_exists('signup_form');
+
+		// Maybe add column
+		if (empty($result)) {
+
+			$query = "ALTER TABLE {$this->table_name} ADD COLUMN `signup_form` varchar(40) default 'by-admin' AFTER `ips`;";
+
+			$result = $this->get_db()->query($query);
+
+		} // end if;
+
+		// Return success/fail
+		return $this->is_success($result);
+
+	} // end __20210508;
+
+	/**
+	 * Adds the signup_form column.
+	 *
+	 * @since 2.0.0
+	 * @return bool
+	 */
+	protected function __20210607() { // phpcs:ignore
+
+		$result = $this->column_exists('signup_form');
+
+		// Maybe add column
+		if (empty($result)) {
+
+			$query_set = "SET sql_mode = 'ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';";
+
+			$result_set = $this->get_db()->query($query_set);
+
+			if ($this->is_success($result_set) === false) {
+
+				return false;
+
+			} // end if;
+
+			$query = "ALTER TABLE {$this->table_name} ADD COLUMN `signup_form` varchar(40) default 'by-admin' AFTER `ips`;";
+
+			$result = $this->get_db()->query($query);
+
+		} // end if;
+
+		// Return success/fail
+		return $this->is_success($result);
+
+	} // end __20210607;
+
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_modified',
+			'date_registered',
+			'last_login',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Customers_Table;

inc/database/discount-codes/class-discount-code-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying discount codes.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Discount_Codes
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Discount_Codes;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying discount codes.
+ *
+ * @since 2.0.0
+ */
+class Discount_Code_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'discount_codes';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'dc';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Discount_Codes\\Discount_Codes_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'discount_code';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'discount_codes';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Discount_Code';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'discount_codes';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Discount_Code_Query;

inc/database/discount-codes/class-discount-codes-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying discount codes' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Discount_Code
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Discount_Codes;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_discount_codemeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Discount_Codes_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'discount_codemeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Products constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_discount_code_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_discount_code_id (wu_discount_code_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+}  // end class Discount_Codes_Meta_Table;

inc/database/discount-codes/class-discount-codes-schema.php

@@ -0,0 +1,176 @@
+<?php
+/**
+ * Discount Code schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Discount_Codes
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Discount_Codes;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Discount Codes Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Discount_Codes_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true,
+		),
+
+		array(
+			'name'       => 'name',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'code',
+			'type'       => 'varchar',
+			'length'     => '20',
+			'sortable'   => true,
+			'searchable' => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'description',
+			'type'       => 'longtext',
+			'default'    => '',
+			'searchable' => true,
+		),
+
+		array(
+			'name'       => 'uses',
+			'type'       => 'int',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'max_uses',
+			'type'       => 'int',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true,
+			'allow_null' => true,
+			'default'    => 0,
+		),
+
+		array(
+			'name'       => 'apply_to_renewals',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 0,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'type',
+			'type'       => 'enum(\'percentage\', \'absolute\')',
+			'default'    => 'percentage',
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'value',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'setup_fee_type',
+			'type'       => 'enum(\'percentage\', \'absolute\')',
+			'default'    => 'percentage',
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'setup_fee_value',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'active',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_start',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'transition' => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_expiration',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'transition' => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Discount_Codes_Schema;

inc/database/discount-codes/class-discount-codes-table.php

@@ -0,0 +1,128 @@
+<?php
+/**
+ * Class used for querying discount_codes.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Discount_Code
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Discount_Codes;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_discount_codes" database table
+ *
+ * @since 2.0.0
+ */
+final class Discount_Codes_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'discount_codes';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Discount_Code constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) NOT NULL auto_increment,
+			name tinytext NOT NULL DEFAULT '',
+			code varchar(20) NOT NULL default '',
+			description longtext NULL default '',
+			uses int default '0',
+			max_uses int,
+			apply_to_renewals tinyint(4) default 0,
+			type enum('percentage', 'absolute') NOT NULL default 'percentage',
+			value decimal(13,4) default 0,
+			setup_fee_type enum('percentage', 'absolute') NOT NULL default 'percentage',
+			setup_fee_value decimal(13,4) default 0,
+			active tinyint(4) default 1,
+			date_start datetime NULL,
+			date_expiration datetime NULL,
+			date_created datetime NULL,
+			date_modified datetime NULL,
+			PRIMARY KEY (id)";
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Discount_Codes_Table;

inc/database/domains/class-domain-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying domain mappings.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Domains
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Domains;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying domain mappings.
+ *
+ * @since 2.0.0
+ */
+class Domain_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'domain_mappings';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'd';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Domains\\Domains_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'domain';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'domains';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Domain';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'domains';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Domain_Query;

inc/database/domains/class-domain-stage.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Domain Types enum.
+ *
+ * @package WP_Ultimo
+ * @subpackage WP_Ultimo\Database\Domains
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Domains;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+use \WP_Ultimo\Database\Engine\Enum;
+
+/**
+ * Domain Stage.
+ *
+ * @since 2.0.0
+ */
+class Domain_Stage extends Enum {
+
+	/**
+	 * Default product type.
+	 */
+	const __default = 'checking-dns'; // phpcs:ignore
+
+	const FAILED           = 'failed';
+	const CHECKING_DNS     = 'checking-dns';
+	const CHECKING_SSL     = 'checking-ssl-cert';
+	const DONE_WITHOUT_SSL = 'done-without-ssl';
+	const DONE             = 'done';
+
+	/**
+	 * Returns an array with values => CSS Classes.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function classes() {
+
+		return array(
+			static::FAILED           => 'wu-bg-red-200 wu-text-red-700',
+			static::CHECKING_DNS     => 'wu-bg-blue-200 wu-text-blue-700',
+			static::CHECKING_SSL     => 'wu-bg-yellow-200 wu-text-yellow-700',
+			static::DONE             => 'wu-bg-green-200 wu-text-green-700',
+			static::DONE_WITHOUT_SSL => 'wu-bg-gray-800 wu-text-white',
+		);
+
+	} // end classes;
+
+	/**
+	 * Returns an array with values => labels.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function labels() {
+
+		return array(
+			static::FAILED           => __('DNS Failed', 'wp-ultimo'),
+			static::CHECKING_DNS     => __('Checking DNS', 'wp-ultimo'),
+			static::CHECKING_SSL     => __('Checking SSL', 'wp-ultimo'),
+			static::DONE             => __('Ready', 'wp-ultimo'),
+			static::DONE_WITHOUT_SSL => __('Ready (without SSL)', 'wp-ultimo'),
+		);
+
+	} // end labels;
+
+} // end class Domain_Stage;

inc/database/domains/class-domains-schema.php

@@ -0,0 +1,121 @@
+<?php
+/**
+ * Domain schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Domains
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Domains;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Domains Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Domains_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true
+		),
+
+		array(
+			'name'       => 'blog_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'aliases'    => array('site_id', 'site'),
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'domain',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'active',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'primary_domain',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 0,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'secure',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 0,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'stage',
+			'type'       => 'enum(\'checking-dns\', \'checking-ssl-cert\', \'done-without-ssl\', \'done\', \'failed\')',
+			'default'    => 'checking-dns',
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Domains_Schema;

inc/database/domains/class-domains-table.php

@@ -0,0 +1,123 @@
+<?php
+/**
+ * Class used for querying domain mappings.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Domains
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Domains;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_domain_mapping" database table
+ *
+ * @since 2.0.0
+ */
+final class Domains_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'domain_mappings';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Domains constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) NOT NULL auto_increment,
+			blog_id bigint(20) NOT NULL,
+			domain varchar(191) NOT NULL,
+			active tinyint(4) default 1,
+			primary_domain tinyint(4) default 0,
+			secure tinyint(4) default 0,
+			stage enum('checking-dns', 'checking-ssl-cert', 'done', 'failed', 'done-without-ssl') DEFAULT 'checking-dns',
+			date_created datetime NULL,
+			date_modified datetime NULL,
+			PRIMARY KEY (id),
+			KEY blog_id (blog_id,domain,active),
+			KEY domain (domain)";
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Domains_Table;

inc/database/emails/class-email-query.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * Class used for querying emails.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Posts
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Emails;
+
+use WP_Ultimo\Database\Posts\Post_Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying emails.
+ *
+ * @since 2.0.0
+ */
+class Email_Query extends Post_Query {
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'post';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'posts';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Email';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'emails';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Modifies the query call to add our types.
+	 *
+	 * @since 2.0.0
+	 *
+	 * @param array $query Query parameters being passed.
+	 * @return array
+	 */
+	public function query($query = array()) {
+
+		$query['type__in'] = array('system_email');
+
+		return parent::query($query);
+
+	} // end query;
+
+} // end class Email_Query;

inc/database/engine/class-base.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * BerlinDB Base Class Wrapper
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Base extends \WP_Ultimo\Dependencies\BerlinDB\Database\Base {
+
+	protected $prefix = 'wu';
+
+} // end class Base;

inc/database/engine/class-column.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Base Custom Database Column Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Column extends \WP_Ultimo\Dependencies\BerlinDB\Database\Column {
+
+	protected $prefix = 'wu';
+
+} // end class Column;

inc/database/engine/class-compare.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Base Custom Database Compare Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Compare extends \WP_Ultimo\Dependencies\BerlinDB\Database\Compare {} // end class Compare;

inc/database/engine/class-date.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Base Custom Database Date Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Date extends \WP_Ultimo\Dependencies\BerlinDB\Database\Date {} // end class Date;

inc/database/engine/class-enum.php

@@ -0,0 +1,281 @@
+<?php
+/**
+ * WP Ultimo ENUM base class.
+ *
+ * @package WP_Ultimo
+ * @subpackage WP_Ultimo\Database\Engine
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * WP Ultimo ENUM base class.
+ *
+ * @since 2.0.0
+ */
+abstract class Enum
+{
+    /**
+     * The default value.
+     */
+    const __default = false;
+    // phpcs:ignore
+    /**
+     * The options available.
+     *
+     * @since 2.0.0
+     * @var array
+     */
+    static $options = array();
+    /**
+     * @var string
+     */
+    private $value = '';
+    /**
+     * Constructor method. Takes the value you want to set.
+     *
+     * @since 2.0.0
+     *
+     * @param string $value The value to be set.
+     */
+    public function __construct($value = '')
+    {
+        $this->value = $value;
+    }
+    // end __construct;
+    // Needs to be Implemented
+    /**
+     * Returns an array with values => CSS Classes.
+     *
+     * @since 2.0.0
+     * @return array
+     */
+    abstract protected function classes();
+    /**
+     * Returns an array with values => labels.
+     *
+     * @since 2.0.0
+     * @return void
+     */
+    abstract protected function labels();
+    /**
+     * Returns an array with values => labels.
+     *
+     * @since 2.0.0
+     * @return void
+     */
+    protected function icon_classes() {
+
+   		return array();
+
+   	}
+    // end icon_classes;
+    /**
+     * Returns the options available as constants.
+     *
+     * @since 2.0.0
+     * @return array
+     */
+    public static function get_options() {
+
+   		$hook = static::get_hook_name();
+
+   		if (!isset(static::$options[$hook])) {
+
+   			$reflector = new \ReflectionClass(static::class);
+
+   			static::$options[$hook] = apply_filters("wu_available_{$hook}_options", $reflector->getConstants());
+
+   		} // end if;
+
+   		return static::$options[$hook];
+
+   	}
+    // end get_options;
+    public static function get_allowed_list($string = false) {
+
+   		$options = array_unique(self::get_options());
+
+   		return $string ? implode(',', $options) : $options;
+
+   	}
+    // end get_allowed_list;
+    /**
+     * Returns the value loaded here.
+     *
+     * This runs through is_valid and returns the
+     * default value if a invalid value is passed on.
+     *
+     * @since 2.0.0
+     * @return string
+     */
+    public function get_value() {
+
+   		if ($this->is_valid($this->value)) {
+
+   			return $this->value;
+
+   		} // end if;
+
+   		return static::__default;
+
+   	}
+    // end get_value;
+    /**
+     * Check for the the validity of the value passed.
+     *
+     * @since 2.0.0
+     *
+     * @param string $value The string.
+     * @return boolean
+     */
+    public function is_valid($value) {
+
+   		$options = static::get_options();
+
+   		return in_array($value, $options, true);
+
+   	}
+    // end is_valid;
+    /**
+     * Returns the label of a given value.
+     *
+     * @since 2.0.0
+     * @return string
+     */
+    public function get_label() {
+
+   		$hook = static::get_hook_name();
+
+   		$labels = apply_filters("wu_available_{$hook}_labels", $this->labels());
+
+   		return $this->exists_or_default($labels, $this->get_value());
+
+   	}
+    // end get_label;
+    /**
+     * Returns the classes of a given value.
+     *
+     * @since 2.0.0
+     * @return string
+     */
+    public function get_classes() {
+
+   		$hook = static::get_hook_name();
+
+   		$classes = apply_filters("wu_available_{$hook}_classes", $this->classes());
+
+   		return $this->exists_or_default($classes, $this->get_value());
+
+   	}
+    // end get_classes;
+    /**
+     * Returns the classes of a given value.
+     *
+     * @since 2.0.0
+     * @return string
+     */
+    public function get_icon_classes() {
+
+   		$hook = static::get_hook_name();
+
+   		$classes = apply_filters("wu_available_{$hook}_icon_classes", $this->icon_classes());
+
+   		return $this->exists_or_default($classes, $this->get_value());
+
+   	}
+    // end get_icon_classes;
+    /**
+     * Returns an array of options.
+     *
+     * @since 2.0.0
+     * @return void
+     */
+    public static function to_array() {
+
+   		static $instance;
+
+   		if ($instance === null) {
+
+   			$instance = new static;
+
+   		} // end if;
+
+   		$hook = $instance::get_hook_name();
+
+   		$labels = apply_filters("wu_{$hook}_to_array", $instance->labels());
+
+   		return $labels;
+
+   	}
+    // end to_array;
+    /**
+     * Get the hook name for this class, so we can add filters.
+     *
+     * @since 2.0.0
+     * @return string
+     */
+    public static function get_hook_name() {
+
+   		$class_name = (new \ReflectionClass(static::class))->getShortName();
+
+   		return strtolower($class_name);
+
+   	}
+    // end get_hook_name;
+    /**
+     * Checks if a key exists on an array, otherwise returns a default value.
+     *
+     * @since 2.0.0
+     *
+     * @param array  $array The array to check.
+     * @param string $key The key to check.
+     * @param string $default The default value.
+     * @return string
+     */
+    public function exists_or_default($array, $key, $default = '') {
+
+   		if (empty($default)) {
+
+   			$default = isset($array[static::__default]) ? $array[static::__default] : '';
+
+   		} // end if;
+
+   		return isset($array[$key]) ? $array[$key] : $default;
+
+   	}
+    // end exists_or_default;
+    /**
+     * Converts this to string.
+     *
+     * @since 2.0.0
+     * @return string
+     */
+    public function __toString(): string {
+
+   		return $this->get_value();
+
+   	}
+    // end __toString;
+    /**
+     * Magic method to allow for constants to be called.
+     *
+     * @since 2.0.0
+     *
+     * @param string $name The name of the constants.
+     * @param array  $arguments The list of arguments. Not really needed here.
+     * @return string
+     */
+    public static function __callStatic($name, $arguments) {
+
+   		$class_name = static::class;
+
+   		return constant("$class_name::$name");
+
+   	}
+    // end __callStatic;
+} // end class Enum;

inc/database/engine/class-meta.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Base Custom Database Meta Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Meta extends \WP_Ultimo\Dependencies\BerlinDB\Database\Meta {} // end class Meta;

inc/database/engine/class-query.php

@@ -0,0 +1,100 @@
+<?php
+/**
+ * Base Custom Database Table Query Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Query extends \WP_Ultimo\Dependencies\BerlinDB\Database\Query {
+
+ 	/**
+	 * The prefix for the custom table.
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $prefix = 'wu';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = false;
+
+	/**
+	 * Keep track of the global cache groups we've added.
+	 * This is to prevent adding the same group multiple times.
+	 *
+	 * @since 2.1.2
+	 * @var array
+	 */
+	protected static $added_globals = array();
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural;
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'sites';
+
+	/**
+	 * The class constructor
+	 *
+	 * @since 2.1.2
+	 * @param string|array $query Optional. An array or string of Query parameters.
+	 * @return void
+	 */
+	public function __construct($query = array()) {
+
+		$cache_group = $this->apply_prefix($this->cache_group, '-');
+
+		if ($this->global_cache && !in_array($cache_group, self::$added_globals, true)) {
+
+			wp_cache_add_global_groups(array($cache_group));
+
+			self::$added_globals[] = $cache_group;
+
+		} // end if;
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+	/**
+	 * Get the plural name.
+	 *
+	 * @since 2.0.0
+	 * @return string
+	 */
+	public function get_plural_name() {
+
+		return $this->item_name_plural;
+
+	} // end get_plural_name;
+
+} // end class Query;

inc/database/engine/class-row.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Base Custom Database Row Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Row extends \WP_Ultimo\Dependencies\BerlinDB\Database\Row {
+
+	protected $prefix = 'wu';
+
+} // end class Row;

inc/database/engine/class-schema.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Base Custom Database Table Schema Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+class Schema extends \WP_Ultimo\Dependencies\BerlinDB\Database\Schema {
+
+	protected $prefix = 'wu';
+
+} // end class Schema;

inc/database/engine/class-table.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * Base Custom Database Table Class.
+ */
+
+namespace WP_Ultimo\Database\Engine;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * The base class that all other database base classes extend.
+ *
+ * This class attempts to provide some universal immutability to all other
+ * classes that extend it, starting with a magic getter, but likely expanding
+ * into a magic call handler and others.
+ *
+ * @since 1.0.0
+ */
+abstract class Table extends \WP_Ultimo\Dependencies\BerlinDB\Database\Table {
+
+	/**
+	 * Table prefix.
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $prefix = 'wu';
+
+	/**
+	 * Caches the SHOW TABLES result.
+	 *
+	 * @since 2.0.0
+	 * @var bool
+	 */
+	protected $_exists;
+
+	/**
+	 * Overrides the is_upgradeable method.
+	 *
+	 * We need to do this because we are using the table object
+	 * early in the lifecycle, which means that upgrade.php is not
+	 * available.
+	 *
+	 * @since 2.0.0
+	 * @return boolean
+	 */
+	public function is_upgradeable() {
+
+		if (!is_main_network()) {
+
+			return false;
+
+		} // end if;
+
+		if (!is_main_site()) {
+
+			return false;
+
+		} // end if;
+
+		return true;
+
+	} // end is_upgradeable;
+
+	/**
+	 * Adds a caching layer to the parent exists method.
+	 *
+	 * @since 2.0.0
+	 * @return boolean
+	 */
+	public function exists() {
+
+		if ($this->_exists === null) {
+
+			$this->_exists = parent::exists();
+
+		} // end if;
+
+		return $this->_exists;
+
+	} // end exists;
+
+} // end class Table;

inc/database/events/class-event-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying events.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Events
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Events;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying events.
+ *
+ * @since 2.0.0
+ */
+class Event_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'events';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'e';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Events\\Events_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'event';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'events';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Event';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'events';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Event_Query;

inc/database/events/class-events-schema.php

@@ -0,0 +1,108 @@
+<?php
+/**
+ * Event schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Events
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Events;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Events Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Events_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true,
+		),
+
+		array(
+			'name'     => 'severity',
+			'type'     => 'tinyint',
+			'length'   => '1',
+			'unsigned' => true,
+			'sortable' => true,
+		),
+
+		array(
+			'name'    => 'initiator',
+			'type'    => 'enum(\'system\', \'manual\')',
+			'default' => 'none',
+		),
+
+		array(
+			'name'       => 'author_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'object_type',
+			'type'       => 'varchar',
+			'length'     => 20,
+			'default'    => 'network',
+			'sortable'   => true,
+			'searchable' => true,
+		),
+
+		array(
+			'name'       => 'object_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'    => 'slug',
+			'type'    => 'longtext',
+			'default' => '',
+		),
+
+		array(
+			'name'    => 'payload',
+			'type'    => 'longtext',
+			'default' => '',
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Events_Schema;

inc/database/events/class-events-table.php

@@ -0,0 +1,123 @@
+<?php
+/**
+ * Class used for querying events.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Event
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Events;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_events" database table
+ *
+ * @since 2.0.0
+ */
+final class Events_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'events';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Event constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) NOT NULL auto_increment,
+			severity tinyint(4),
+			initiator enum('system', 'manual'),
+			author_id bigint(20) NOT NULL default '0',
+			object_id bigint(20) NOT NULL default '0',
+			object_type varchar(20) DEFAULT 'network',
+			slug varchar(255),
+			payload longtext,
+			date_created datetime NULL,
+			PRIMARY KEY (id),
+			KEY severity (severity),
+			KEY author_id (author_id),
+			KEY initiator (initiator)";
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Events_Table;

inc/database/memberships/class-membership-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying memberships.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Memberships
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Memberships;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying memberships.
+ *
+ * @since 2.0.0
+ */
+class Membership_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'memberships';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'm';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Memberships\\Memberships_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'membership';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'memberships';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Membership';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'memberships';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Membership_Query;

inc/database/memberships/class-membership-status.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * Membership Status enum.
+ *
+ * @package WP_Ultimo
+ * @subpackage WP_Ultimo\Database\Memberships
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Memberships;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+use \WP_Ultimo\Database\Engine\Enum;
+
+/**
+ * Membership Status.
+ *
+ * @since 2.0.0
+ */
+class Membership_Status extends Enum {
+
+	/**
+	 * Default product type.
+	 */
+	const __default = 'pending'; // phpcs:ignore
+
+	const PENDING   = 'pending';
+	const ACTIVE    = 'active';
+	const TRIALING  = 'trialing';
+	const EXPIRED   = 'expired';
+	const ON_HOLD   = 'on-hold';
+	const CANCELLED = 'cancelled';
+
+	/**
+	 * Returns an array with values => CSS Classes.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function classes() {
+
+		return array(
+			static::PENDING   => 'wu-bg-gray-200 wu-text-gray-700',
+			static::ACTIVE    => 'wu-bg-green-200 wu-text-green-700',
+			static::TRIALING  => 'wu-bg-orange-200 wu-text-orange-700',
+			static::ON_HOLD   => 'wu-bg-blue-200 wu-text-blue-700',
+			static::EXPIRED   => 'wu-bg-yellow-200 wu-text-yellow-700',
+			static::CANCELLED => 'wu-bg-red-200 wu-text-red-700',
+		);
+
+	} // end classes;
+
+	/**
+	 * Returns an array with values => labels.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function labels() {
+
+		return array(
+			static::PENDING   => __('Pending', 'wp-ultimo'),
+			static::ACTIVE    => __('Active', 'wp-ultimo'),
+			static::TRIALING  => __('Trialing', 'wp-ultimo'),
+			static::ON_HOLD   => __('On Hold', 'wp-ultimo'),
+			static::EXPIRED   => __('Expired', 'wp-ultimo'),
+			static::CANCELLED => __('Cancelled', 'wp-ultimo'),
+		);
+
+	} // end labels;
+
+} // end class Membership_Status;

inc/database/memberships/class-memberships-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying memberships' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Memberships
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Memberships;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_membershipmeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Memberships_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'membershipmeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Memberships constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_membership_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_membership_id (wu_membership_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+}  // end class Memberships_Meta_Table;

inc/database/memberships/class-memberships-schema.php

@@ -0,0 +1,334 @@
+<?php
+/**
+ * Membership schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Memberships
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Memberships;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Memberships Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Memberships_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		// id
+		array(
+			'name'       => 'id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'extra'      => 'auto_increment',
+			'primary'    => true,
+			'sortable'   => true,
+			'searchable' => true,
+		),
+
+		// customer_id
+		array(
+			'name'     => 'customer_id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+		),
+
+		// user_id
+		array(
+			'name'       => 'user_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'default'    => null,
+			'allow_null' => true
+		),
+
+		array(
+			'name'       => 'migrated_from_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// object_id
+		array(
+			'name'       => 'plan_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		// addons
+		array(
+			'name' => 'addon_products',
+			'type' => 'longtext',
+		),
+
+		// currency
+		array(
+			'name'     => 'currency',
+			'type'     => 'varchar',
+			'length'   => '20',
+			'default'  => 'USD',
+			'sortable' => true
+		),
+
+		array(
+			'name'       => 'initial_amount',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'recurring',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'auto_renew',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 0,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'duration',
+			'type'       => 'smallint',
+			'unsigned'   => true,
+			'default'    => '0',
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		array(
+			'name'    => 'duration_unit',
+			'type'    => 'enum(\'day\', \'month\', \'week\', \'year\')',
+			'default' => 'none',
+		),
+
+		array(
+			'name'       => 'amount',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		// date_created
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// date_activated
+		array(
+			'name'       => 'date_activated',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// date_trial_end
+		array(
+			'name'       => 'date_trial_end',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// date_renewed
+		array(
+			'name'       => 'date_renewed',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// date_cancellation
+		array(
+			'name'       => 'date_cancellation',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// date_expiration
+		array(
+			'name'       => 'date_expiration',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'transition' => true,
+			'allow_null' => true,
+		),
+
+		// date_payment_plan_completed
+		array(
+			'name'       => 'date_payment_plan_completed',
+			'type'       => 'datetime',
+			'default'    => null,
+			'date_query' => true,
+			'sortable'   => true,
+			'transition' => true,
+			'allow_null' => true,
+		),
+
+		// auto_renew
+		array(
+			'name'       => 'auto_renew',
+			'type'       => 'smallint',
+			'unsigned'   => true,
+			'default'    => '0',
+			'transition' => true
+		),
+
+		// times_billed
+		array(
+			'name'       => 'times_billed',
+			'type'       => 'smallint',
+			'unsigned'   => true,
+			'default'    => '0',
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		// billing_cycles
+		array(
+			'name'     => 'billing_cycles',
+			'type'     => 'smallint',
+			'unsigned' => true,
+			'default'  => '0',
+			'sortable' => true
+		),
+
+		// status
+		array(
+			'name'       => 'status',
+			'type'       => 'varchar',
+			'length'     => '12',
+			'default'    => 'pending',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		// gateway_customer_id
+		array(
+			'name'       => 'gateway_customer_id',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		// gateway_subscription_id
+		array(
+			'name'       => 'gateway_subscription_id',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		// gateway
+		array(
+			'name'       => 'gateway',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+		),
+
+		// signup_method
+		array(
+			'name'    => 'signup_method',
+			'type'    => 'tinytext',
+			'default' => '',
+		),
+
+		// subscription_key
+		array(
+			'name'       => 'subscription_key',
+			'type'       => 'varchar',
+			'length'     => '32',
+			'default'    => '',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		// upgraded_from
+		array(
+			'name'     => 'upgraded_from',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'default'  => ''
+		),
+
+		// date_modified
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true
+		),
+
+		// disabled
+		array(
+			'name'     => 'disabled',
+			'type'     => 'smallint',
+			'unsigned' => true,
+			'default'  => '',
+			'pattern'  => '%d'
+		),
+
+	);
+
+} // end class Memberships_Schema;

inc/database/memberships/class-memberships-table.php

@@ -0,0 +1,153 @@
+<?php
+/**
+ * Class used for querying memberships.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Memberships
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Memberships;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_membership" database table
+ *
+ * @since 2.0.0
+ */
+final class Memberships_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'memberships';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Memberships constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema.
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+			customer_id bigint(20) unsigned NOT NULL default '0',
+			user_id bigint(20) unsigned DEFAULT NULL,
+			migrated_from_id bigint(20) DEFAULT NULL,
+			plan_id bigint(20) NOT NULL default '0',
+			addon_products longtext,
+			currency varchar(10) NOT NULL DEFAULT 'USD',
+			initial_amount decimal(13,4) default 0,
+			recurring smallint unsigned NOT NULL DEFAULT '0',
+			auto_renew smallint unsigned NOT NULL DEFAULT '0',
+			duration smallint default 0,
+			duration_unit enum('day', 'week', 'month', 'year'),
+			amount decimal(13,4) default 0,
+			date_created datetime NULL,
+			date_activated datetime NULL,
+			date_trial_end datetime NULL,
+			date_renewed datetime NULL,
+			date_cancellation datetime NULL,
+			date_expiration datetime NULL,
+			date_payment_plan_completed datetime NULL,
+			times_billed smallint unsigned NOT NULL DEFAULT '0',
+			billing_cycles smallint unsigned NOT NULL DEFAULT '0',
+			status varchar(12) NOT NULL DEFAULT 'pending',
+			gateway_customer_id tinytext DEFAULT NULL,
+			gateway_subscription_id tinytext DEFAULT NULL,
+			gateway tinytext default '',
+			signup_method tinytext default '',
+			subscription_key varchar(32) default '',
+			upgraded_from bigint(20) unsigned DEFAULT NULL,
+			date_modified datetime NULL,
+			disabled smallint unsigned DEFAULT NULL,
+			PRIMARY KEY (id),
+			KEY customer_id (customer_id),
+			KEY plan_id (plan_id),
+			KEY status (status),
+			KEY disabled (disabled)";
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_activated',
+			'date_trial_end',
+			'date_renewed',
+			'date_cancellation',
+			'date_expiration',
+			'date_payment_plan_completed',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Memberships_Table;

inc/database/payments/class-payment-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying payments.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Payments
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Payments;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying payments.
+ *
+ * @since 2.0.0
+ */
+class Payment_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'payments';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'pay';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Payments\\Payments_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'payment';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'payments';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Payment';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'payments';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Payment_Query;

inc/database/payments/class-payment-status.php

@@ -0,0 +1,97 @@
+<?php
+/**
+ * Payment Status enum.
+ *
+ * @package WP_Ultimo
+ * @subpackage WP_Ultimo\Database\Payments
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Payments;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+use \WP_Ultimo\Database\Engine\Enum;
+
+/**
+ * Payment Status.
+ *
+ * @since 2.0.0
+ */
+class Payment_Status extends Enum {
+
+	/**
+	 * Default product type.
+	 */
+	const __default = 'pending'; // phpcs:ignore
+
+	const PENDING        = 'pending';
+	const COMPLETED      = 'completed';
+	const REFUND         = 'refunded';
+	const PARTIAL_REFUND = 'partially-refunded';
+	const PARTIAL        = 'partially-paid';
+	const FAILED         = 'failed';
+	const CANCELLED      = 'cancelled';
+
+	/**
+	 * Returns an array with values => CSS Classes.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function classes() {
+
+		return array(
+			static::PENDING        => 'wu-bg-gray-200 wu-text-gray-700',
+			static::COMPLETED      => 'wu-bg-green-200 wu-text-green-700',
+			static::REFUND         => 'wu-bg-blue-200 wu-text-gray-700',
+			static::PARTIAL_REFUND => 'wu-bg-blue-200 wu-text-gray-700',
+			static::PARTIAL        => 'wu-bg-yellow-200 wu-text-yellow-700',
+			static::FAILED         => 'wu-bg-red-200 wu-text-red-700',
+			static::CANCELLED      => 'wu-bg-orange-200 wu-text-orange-700',
+		);
+
+	} // end classes;
+
+	/**
+	 * Returns an array with values => CSS Classes.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function icon_classes() {
+
+		return array(
+			static::PENDING        => 'wu-align-middle dashicons-wu-clock wu-text-gray-700',
+			static::COMPLETED      => 'wu-align-middle dashicons-wu-check wu-text-green-700',
+			static::REFUND         => 'wu-align-middle dashicons-wu-cw wu-text-gray-700',
+			static::PARTIAL_REFUND => 'wu-align-middle dashicons-wu-cw wu-text-gray-700',
+			static::PARTIAL        => 'wu-align-middle dashicons-wu-cw wu-text-yellow-700',
+			static::FAILED         => 'wu-align-middle dashicons-wu-circle-with-cross wu-text-red-700',
+			static::CANCELLED      => 'wu-align-middle dashicons-wu-circle-with-cross wu-text-orange-700',
+		);
+
+	} // end icon_classes;
+
+	/**
+	 * Returns an array with values => labels.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function labels() {
+
+		return array(
+			static::PENDING        => __('Pending', 'wp-ultimo'),
+			static::COMPLETED      => __('Completed', 'wp-ultimo'),
+			static::REFUND         => __('Refunded', 'wp-ultimo'),
+			static::PARTIAL_REFUND => __('Partially Refunded', 'wp-ultimo'),
+			static::PARTIAL        => __('Partially Paid', 'wp-ultimo'),
+			static::FAILED         => __('Failed', 'wp-ultimo'),
+			static::CANCELLED      => __('Cancelled', 'wp-ultimo'),
+		);
+
+	} // end labels;
+
+} // end class Payment_Status;

inc/database/payments/class-payments-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying payments' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Payments
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Payments;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_paymentmeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Payments_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'paymentmeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Payments constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_payment_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_payment_id (wu_payment_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+}  // end class Payments_Meta_Table;

inc/database/payments/class-payments-schema.php

@@ -0,0 +1,192 @@
+<?php
+/**
+ * Payment schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Payments
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Payments;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Payments Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Payments_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		// id
+		array(
+			'name'       => 'id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'extra'      => 'auto_increment',
+			'primary'    => true,
+			'sortable'   => true,
+			'searchable' => true,
+		),
+
+		array(
+			'name'       => 'status',
+			'type'       => 'varchar',
+			'length'     => '12',
+			'default'    => 'pending',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		// customer_id
+		array(
+			'name'       => 'customer_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'membership_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'parent_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'product_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'migrated_from_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// currency
+		array(
+			'name'     => 'currency',
+			'type'     => 'varchar',
+			'length'   => '20',
+			'default'  => 'USD',
+			'sortable' => true
+		),
+
+		array(
+			'name'       => 'discount_code',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'     => 'discount_total',
+			'type'     => 'decimal(13,4)',
+			'default'  => '',
+			'sortable' => true,
+		),
+
+		array(
+			'name'       => 'subtotal',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'refund_total',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'tax_total',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'total',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		// gateway
+		array(
+			'name'       => 'gateway',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+		),
+
+		// gateway
+		array(
+			'name'       => 'gateway_payment_id',
+			'type'       => 'tinytext',
+			'default'    => '',
+			'searchable' => true,
+		),
+
+		// date_created
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		// date_modified
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Payments_Schema;

inc/database/payments/class-payments-table.php

@@ -0,0 +1,198 @@
+<?php
+/**
+ * Class used for querying payment.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Payments
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Payments;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_payments" database table
+ *
+ * @since 2.0.0
+ */
+final class Payments_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'payments';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20210417' => 20_210_417,
+		'2.0.1-revision.20210607' => 20_210_607,
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Payments constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema.
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
+			status varchar(20) NOT NULL DEFAULT 'pending',
+			customer_id bigint(20) unsigned NOT NULL default '0',
+			membership_id bigint(20) unsigned NOT NULL default '0',
+			parent_id bigint(20) unsigned NOT NULL default '0',
+			product_id bigint(9) NOT NULL default '0',
+			migrated_from_id bigint(20) DEFAULT NULL,
+			discount_code tinytext NOT NULL default '',
+			currency varchar(10) NOT NULL DEFAULT 'USD',
+			subtotal decimal(13,4) default 0,
+			refund_total decimal(13,4) default 0,
+			tax_total decimal(13,4) default 0,
+			discount_total decimal(13,4) default 0,
+			total decimal(13,4) default 0,
+			gateway tinytext NOT NULL default '',
+			gateway_payment_id tinytext DEFAULT NULL,
+			date_created datetime NULL,
+			date_modified datetime NULL,
+			PRIMARY KEY (id),
+			KEY customer_id (customer_id),
+			KEY membership_id (membership_id),
+			KEY parent_id (parent_id),
+			KEY product_id (product_id),
+			KEY status (status)";
+
+	} // end set_schema;
+
+	/**
+	 * Adds the refund_total column.
+	 *
+	 * This does not work on older versions of MySQL, so we needed
+	 * the other migration below.
+	 *
+	 * @since 2.0.0
+	 * @return bool
+	 */
+	protected function __20210417() { // phpcs:ignore
+
+		$result = $this->column_exists('refund_total');
+
+		// Maybe add column
+		if (empty($result)) {
+
+			$query = "ALTER TABLE {$this->table_name} ADD COLUMN `refund_total` decimal(13,4) default 0 AFTER `subtotal`;";
+
+			$result = $this->get_db()->query($query);
+
+		} // end if;
+
+		// Return success/fail
+		return $this->is_success($result);
+
+	} // end __20210417;
+
+	/**
+	 * Adds the refund_total column.
+	 *
+	 * @since 2.0.0
+	 * @return bool
+	 */
+	protected function __20210607() { // phpcs:ignore
+
+		$result = $this->column_exists('refund_total');
+
+		// Maybe add column
+		if (empty($result)) {
+
+			$query_set = "SET sql_mode = 'ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';";
+
+			$result_set = $this->get_db()->query($query_set);
+
+			if ($this->is_success($result_set) === false) {
+
+				return false;
+
+			} // end if;
+
+			$query = "ALTER TABLE {$this->table_name} ADD COLUMN `refund_total` decimal(13,4) default 0 AFTER `subtotal`;";
+
+			$result = $this->get_db()->query($query);
+
+		} // end if;
+
+		// Return success/fail
+		return $this->is_success($result);
+
+	} // end __20210607;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Payments_Table;

inc/database/posts/class-post-query.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * Class used for querying posts.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Posts
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Posts;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying posts.
+ *
+ * @since 2.0.0
+ */
+class Post_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'posts';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'po';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Posts\\Posts_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'post';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'posts';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Post_Base_Model';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'posts';
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function query($query = array()) {
+
+		if (!isset($query['type__in'])) {
+
+			$query['type'] = $this->item_name;
+
+		} // end if;
+
+		return parent::query($query);
+
+	} // end query;
+
+} // end class Post_Query;

inc/database/posts/class-posts-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying posts' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Posts
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Posts;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_postmeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Posts_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'postmeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Posts constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_post_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_post_id (wu_post_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+} // end class Posts_Meta_Table;

inc/database/posts/class-posts-schema.php

@@ -0,0 +1,125 @@
+<?php
+/**
+ * Post schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Posts
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Posts;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Posts Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Posts_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true
+		),
+
+		array(
+			'name'     => 'author_id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+		),
+
+		array(
+			'name'       => 'type',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		array(
+			'name'       => 'slug',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		array(
+			'name'       => 'title',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		array(
+			'name'       => 'content',
+			'type'       => 'longtext',
+			'default'    => '',
+			'searchable' => true
+		),
+
+		array(
+			'name'       => 'excerpt',
+			'type'       => 'longtext',
+			'default'    => '',
+			'searchable' => true
+		),
+
+		array(
+			'name'       => 'list_order',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 10,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'status',
+			'type'       => 'varchar', // An "enum" here would possibly limit custom post status.
+			'default'    => 'draft',
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Posts_Schema;

inc/database/posts/class-posts-table.php

@@ -0,0 +1,123 @@
+<?php
+/**
+ * Class used for querying posts.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Posts
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Posts;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_post" database table
+ *
+ * @since 2.0.0
+ */
+final class Posts_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'posts';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Posts constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) NOT NULL AUTO_INCREMENT,
+      author_id bigint(20) NOT NULL,
+      type tinytext NOT NULL DEFAULT '',
+			slug tinytext NOT NULL DEFAULT '',
+			title tinytext NOT NULL DEFAULT '',
+			content longtext NOT NULL default '',
+			excerpt longtext NOT NULL default '',
+			date_created datetime NULL,
+			date_modified datetime NULL,
+			list_order tinyint default 10,
+			status varchar(100) NOT NULL default 'draft',
+			PRIMARY KEY (id)";
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Posts_Table;

inc/database/products/class-product-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying products.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Products
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Products;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying products.
+ *
+ * @since 2.0.0
+ */
+class Product_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'products';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'p';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Products\\Products_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'product';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'products';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Product';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'products';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Product_Query;

inc/database/products/class-product-type.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ * Product Types enum.
+ *
+ * @package WP_Ultimo
+ * @subpackage WP_Ultimo\Database\Products
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Products;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+use \WP_Ultimo\Database\Engine\Enum;
+
+/**
+ * Product Types.
+ *
+ * @since 2.0.0
+ */
+class Product_Type extends Enum {
+
+	/**
+	 * Default product type.
+	 */
+	const __default = 'plan'; // phpcs:ignore
+
+	const PLAN    = 'plan';
+	const PACKAGE = 'package';
+	const SERVICE = 'service';
+
+	/**
+	 * Returns an array with values => CSS Classes.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function classes() {
+
+		return array(
+			static::PLAN    => 'wu-bg-green-200 wu-text-green-700',
+			static::PACKAGE => 'wu-bg-gray-200 wu-text-blue-700',
+			static::SERVICE => 'wu-bg-yellow-200 wu-text-yellow-700',
+		);
+
+	} // end classes;
+
+	/**
+	 * Returns an array with values => labels.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function labels() {
+
+		return array(
+			static::PLAN    => __('Plan', 'wp-ultimo'),
+			static::PACKAGE => __('Package', 'wp-ultimo'),
+			static::SERVICE => __('Service', 'wp-ultimo'),
+		);
+
+	} // end labels;
+
+} // end class Product_Type;

inc/database/products/class-products-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying products' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Products
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Products;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_productmeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Products_Meta_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'productmeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Products constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$max_index_length = 191;
+
+		$this->schema = "meta_id bigint(20) unsigned NOT NULL auto_increment,
+		wu_product_id bigint(20) unsigned NOT NULL default '0',
+		meta_key varchar(255) DEFAULT NULL,
+		meta_value longtext DEFAULT NULL,
+		PRIMARY KEY (meta_id),
+		KEY wu_product_id (wu_product_id),
+		KEY meta_key (meta_key({$max_index_length}))";
+
+	} // end set_schema;
+
+}  // end class Products_Meta_Table;

inc/database/products/class-products-schema.php

@@ -0,0 +1,221 @@
+<?php
+/**
+ * Product schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Products
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Products;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Products Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Products_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true
+		),
+
+		array(
+			'name'       => 'slug',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'parent_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'transition' => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'migrated_from_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'name',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		array(
+			'name'       => 'description',
+			'type'       => 'longtext',
+			'default'    => '',
+			'searchable' => true
+		),
+
+		array(
+			'name'       => 'product_group',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'     => 'currency',
+			'type'     => 'varchar',
+			'length'   => '10',
+			'default'  => 'USD',
+			'sortable' => true
+		),
+
+		array(
+			'name'     => 'pricing_type',
+			'type'     => 'varchar',
+			'length'   => '10',
+			'default'  => 'paid',
+			'sortable' => true
+		),
+
+		array(
+			'name'       => 'amount',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'setup_fee',
+			'type'       => 'decimal(13,4)',
+			'default'    => '',
+			'sortable'   => true,
+			'transition' => true,
+		),
+
+		array(
+			'name'       => 'recurring',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'trial_duration',
+			'type'       => 'smallint',
+			'unsigned'   => true,
+			'default'    => '0',
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		array(
+			'name'    => 'trial_duration_unit',
+			'type'    => 'enum(\'day\', \'month\', \'week\', \'year\')',
+			'default' => 'none',
+		),
+
+		array(
+			'name'       => 'duration',
+			'type'       => 'smallint',
+			'unsigned'   => true,
+			'default'    => '0',
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		array(
+			'name'    => 'duration_unit',
+			'type'    => 'enum(\'day\', \'month\', \'week\', \'year\')',
+			'default' => 'none',
+		),
+
+		array(
+			'name'       => 'billing_cycles',
+			'type'       => 'smallint',
+			'unsigned'   => true,
+			'default'    => '0',
+			'sortable'   => true,
+			'transition' => true
+		),
+
+		array(
+			'name'       => 'list_order',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 10,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'active',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'default'    => null,
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'type',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+	);
+
+} // end class Products_Schema;

inc/database/products/class-products-table.php

@@ -0,0 +1,197 @@
+<?php
+/**
+ * Class used for querying products.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Products
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Products;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_product" database table
+ *
+ * @since 2.0.0
+ */
+final class Products_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'products';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20210419' => 20_210_419,
+		'2.0.1-revision.20210607' => 20_210_607,
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Products constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = "id bigint(20) NOT NULL AUTO_INCREMENT,
+			name tinytext NOT NULL DEFAULT '',
+			slug tinytext NOT NULL DEFAULT '',
+			parent_id bigint(20),
+			migrated_from_id bigint(20) DEFAULT NULL,
+			description longtext NOT NULL default '',
+			product_group varchar(20) DEFAULT '',
+			currency varchar(10) NOT NULL DEFAULT 'USD',
+			pricing_type varchar(10) NOT NULL DEFAULT 'paid',
+			amount decimal(13,4) default 0,
+			setup_fee decimal(13,4) default 0,
+			recurring tinyint(4) default 1,
+			trial_duration smallint default 0,
+			trial_duration_unit enum('day', 'week', 'month', 'year'),
+			duration smallint default 0,
+			duration_unit enum('day', 'week', 'month', 'year'),
+			billing_cycles smallint default 0,
+			list_order tinyint default 10,
+			active tinyint(4) default 1,
+			type tinytext NOT NULL DEFAULT '',
+			date_created datetime NULL,
+			date_modified datetime NULL,
+			PRIMARY KEY (id)";
+
+	} // end set_schema;
+
+	/**
+	 * Adds the product_group column.
+	 *
+	 * This does not work on older versions of MySQL, so we needed
+	 * the other migration below.
+	 *
+	 * @since 2.0.0
+	 * @return bool
+	 */
+	protected function __20210419() { // phpcs:ignore
+
+		$result = $this->column_exists('product_group');
+
+		// Maybe add column
+		if (empty($result)) {
+
+			$query = "ALTER TABLE {$this->table_name} ADD COLUMN `product_group` varchar(20) default '' AFTER `description`;";
+
+			$result = $this->get_db()->query($query);
+
+		} // end if;
+
+		// Return success/fail
+		return $this->is_success($result);
+
+	} // end __20210419;
+
+	/**
+	 * Adds the product_group column.
+	 *
+	 * @since 2.0.0
+	 * @return bool
+	 */
+	protected function __20210607() { // phpcs:ignore
+
+		$result = $this->column_exists('product_group');
+
+		// Maybe add column
+		if (empty($result)) {
+
+			$query_set = "SET sql_mode = 'ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';";
+
+			$result_set = $this->get_db()->query($query_set);
+
+			if ($this->is_success($result_set) === false) {
+
+				return false;
+
+			} // end if;
+
+			$query = "ALTER TABLE {$this->table_name} ADD COLUMN `product_group` varchar(20) default '' AFTER `description`;";
+
+			$result = $this->get_db()->query($query);
+
+		} // end if;
+
+		// Return success/fail
+		return $this->is_success($result);
+
+	} // end __20210607;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Products_Table;

inc/database/sites/class-site-query.php

@@ -0,0 +1,121 @@
+<?php
+/**
+ * Class used for querying products.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Sites
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Sites;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying products.
+ *
+ * @since 2.0.0
+ */
+class Site_Query extends Query {
+
+	/**
+	 * Table prefix, including the site prefix.
+	 *
+	 * @since 1.0.0
+	 * @var   string
+	 */
+	protected $prefix = '';
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'blogs';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 's';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Sites\\Sites_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'blog';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'blogs';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Site';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'sites';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Site_Query;

inc/database/sites/class-site-type.php

@@ -0,0 +1,73 @@
+<?php
+/**
+ * Site Types enum.
+ *
+ * @package WP_Ultimo
+ * @subpackage WP_Ultimo\Database\Sites
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Sites;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+use \WP_Ultimo\Database\Engine\Enum;
+
+/**
+ * Site Types.
+ *
+ * @since 2.0.0
+ */
+class Site_Type extends Enum {
+
+	/**
+	 * Default type.
+	 */
+	const __default = 'default'; // phpcs:ignore
+
+	const REGULAR        = 'default';
+	const SITE_TEMPLATE  = 'site_template';
+	const CUSTOMER_OWNED = 'customer_owned';
+	const PENDING        = 'pending';
+	const EXTERNAL       = 'external';
+	const MAIN           = 'main';
+
+	/**
+	 * Returns an array with values => CSS Classes.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function classes() {
+
+		return array(
+			static::REGULAR        => 'wu-bg-gray-700 wu-text-gray-200',
+			static::SITE_TEMPLATE  => 'wu-bg-yellow-200 wu-text-yellow-700',
+			static::CUSTOMER_OWNED => 'wu-bg-green-200 wu-text-green-700',
+			static::PENDING        => 'wu-bg-purple-200 wu-text-purple-700',
+			static::EXTERNAL       => 'wu-bg-blue-200 wu-text-blue-700',
+			static::MAIN           => 'wu-bg-pink-200 wu-text-pink-700',
+		);
+
+	} // end classes;
+
+	/**
+	 * Returns an array with values => labels.
+	 *
+	 * @since 2.0.0
+	 * @return array
+	 */
+	protected function labels() {
+
+		return array(
+			static::REGULAR        => __('Regular Site', 'wp-ultimo'),
+			static::SITE_TEMPLATE  => __('Site Template', 'wp-ultimo'),
+			static::CUSTOMER_OWNED => __('Customer-Owned', 'wp-ultimo'),
+			static::PENDING        => __('Pending', 'wp-ultimo'),
+			static::MAIN           => __('Main Site', 'wp-ultimo'),
+		);
+
+	} // end labels;
+
+} // end class Site_Type;

inc/database/sites/class-sites-meta-table.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class used for querying products' meta data.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Sites
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Sites;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_productmeta" database table
+ *
+ * @since 2.0.0
+ */
+final class Sites_Meta_Table extends Table {
+
+	/**
+     * Table prefix, including the site prefix.
+     *
+     * @since 1.0.0
+     * @var   string
+     */
+	protected $prefix = '';
+
+	/**
+	 * Table name
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $name = 'blogmeta';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Sites constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = false;
+
+	} // end set_schema;
+
+} // end class Sites_Meta_Table;

inc/database/sites/class-sites-schema.php

@@ -0,0 +1,151 @@
+<?php
+/**
+ * Site schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Sites
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Sites;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Sites Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Sites_Schema extends Schema {
+
+	/**
+	 * Table prefix, including the site prefix.
+	 *
+	 * @since 1.0.0
+	 * @var   string
+	 */
+	protected $prefix = '';
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'       => 'blog_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'extra'      => 'auto_increment',
+			'primary'    => true,
+			'sortable'   => true,
+			'aliases'    => array('id', 'ID'),
+			'searchable' => true,
+		),
+
+		array(
+			'name'     => 'site_id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'sortable' => true,
+		),
+
+		array(
+			'name'       => 'domain',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		array(
+			'name'       => 'path',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true
+		),
+
+		array(
+			'name'       => 'registered',
+			'type'       => 'datetime',
+			'default'    => '0000-00-00 00:00:00',
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'last_updated',
+			'type'       => 'datetime',
+			'default'    => '0000-00-00 00:00:00',
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'     => 'public',
+			'type'     => 'tinyint',
+			'length'   => '2',
+			'unsigned' => true,
+			'default'  => 1,
+			'sortable' => true,
+		),
+
+		array(
+			'name'     => 'archived',
+			'type'     => 'tinyint',
+			'length'   => '2',
+			'unsigned' => true,
+			'default'  => 0,
+			'sortable' => true,
+		),
+
+		array(
+			'name'     => 'mature',
+			'type'     => 'tinyint',
+			'length'   => '2',
+			'unsigned' => true,
+			'default'  => 0,
+			'sortable' => true,
+		),
+
+		array(
+			'name'     => 'spam',
+			'type'     => 'tinyint',
+			'length'   => '2',
+			'unsigned' => true,
+			'default'  => 0,
+			'sortable' => true,
+		),
+
+		array(
+			'name'     => 'deleted',
+			'type'     => 'tinyint',
+			'length'   => '2',
+			'unsigned' => true,
+			'default'  => 0,
+			'sortable' => true,
+		),
+
+		array(
+			'name'     => 'lang_id',
+			'type'     => 'int',
+			'length'   => '11',
+			'unsigned' => true,
+			'default'  => 0,
+			'sortable' => true,
+		),
+
+	);
+
+} // end class Sites_Schema;

inc/database/sites/class-sites-table.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * Class used for querying blogs.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Sites
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Sites;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wp_blog" database table
+ *
+ * @since 2.0.0
+ */
+final class Sites_Table extends Table {
+
+	/**
+     * Table prefix, including the site prefix.
+     *
+     * @since 1.0.0
+     * @var   string
+     */
+	protected $prefix = '';
+
+	/**
+	 * Table name
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $name = 'blogs';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.0';
+
+	/**
+	 * Sites constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		$this->schema = false;
+
+	} // end set_schema;
+
+	/**
+	 * Do nothing as this table already exists.
+	 *
+	 * @since 2.0.0
+	 */
+	public function install() {} // end install;
+
+} // end class Sites_Table;

inc/database/webhooks/class-webhook-query.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Class used for querying webhooks.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Webhooks
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Webhooks;
+
+use WP_Ultimo\Database\Engine\Query;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Class used for querying webhooks.
+ *
+ * @since 2.0.0
+ */
+class Webhook_Query extends Query {
+
+	/** Table Properties ******************************************************/
+
+	/**
+	 * Name of the database table to query.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_name = 'webhooks';
+
+	/**
+	 * String used to alias the database table in MySQL statement.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_alias = 'w';
+
+	/**
+	 * Name of class used to setup the database schema
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $table_schema = '\\WP_Ultimo\\Database\\Webhooks\\Webhooks_Schema';
+
+	/** Item ******************************************************************/
+
+	/**
+	 * Name for a single item
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name = 'webhook';
+
+	/**
+	 * Plural version for a group of items.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $item_name_plural = 'webhooks';
+
+	/**
+	 * Callback function for turning IDs into objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var mixed
+	 */
+	protected $item_shape = '\\WP_Ultimo\\Models\\Webhook';
+
+	/**
+	 * Group to cache queries and queried items in.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var string
+	 */
+	protected $cache_group = 'webhooks';
+
+	/**
+	 * If we should use a global cache group.
+	 *
+	 * @since 2.1.2
+	 * @var bool
+	 */
+	protected $global_cache = true;
+
+	/**
+	 * Sets up the customer query, based on the query vars passed.
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 *
+	 * @param string|array $query Array of query arguments.
+	 */
+	public function __construct($query = array()) {
+
+		parent::__construct($query);
+
+	} // end __construct;
+
+} // end class Webhook_Query;

inc/database/webhooks/class-webhooks-schema.php

@@ -0,0 +1,136 @@
+<?php
+/**
+ * Webhook schema class
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Webhooks
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Webhooks;
+
+use WP_Ultimo\Database\Engine\Schema;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Webhooks Schema Class.
+ *
+ * @since 2.0.0
+ */
+class Webhooks_Schema extends Schema {
+
+	/**
+	 * Array of database column objects
+	 *
+	 * @since  2.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $columns = array(
+
+		array(
+			'name'     => 'id',
+			'type'     => 'bigint',
+			'length'   => '20',
+			'unsigned' => true,
+			'extra'    => 'auto_increment',
+			'primary'  => true,
+			'sortable' => true,
+		),
+
+		array(
+			'name'       => 'migrated_from_id',
+			'type'       => 'bigint',
+			'length'     => '20',
+			'unsigned'   => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+		array(
+			'name'       => 'name',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'webhook_url',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'event',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'     => 'event_count',
+			'type'     => 'int',
+			'length'   => '10',
+			'default'  => 0,
+			'sortable' => true,
+			'aliases'  => array('sent_events_count'),
+		),
+
+		array(
+			'name'       => 'active',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 1,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'hidden',
+			'type'       => 'tinyint',
+			'length'     => '4',
+			'unsigned'   => true,
+			'default'    => 0,
+			'transition' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'integration',
+			'type'       => 'varchar',
+			'searchable' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_last_failed',
+			'type'       => 'datetime',
+			'date_query' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_created',
+			'type'       => 'datetime',
+			'created'    => true,
+			'date_query' => true,
+			'sortable'   => true,
+		),
+
+		array(
+			'name'       => 'date_modified',
+			'type'       => 'datetime',
+			'default'    => null,
+			'modified'   => true,
+			'date_query' => true,
+			'sortable'   => true,
+			'allow_null' => true,
+		),
+
+	);
+
+} // end class Webhooks_Schema;

inc/database/webhooks/class-webhooks-table.php

@@ -0,0 +1,129 @@
+<?php
+/**
+ * Class used for querying domain mappings.
+ *
+ * @package WP_Ultimo
+ * @subpackage Database\Webhook
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Database\Webhooks;
+
+use WP_Ultimo\Database\Engine\Table;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Setup the "wu_webhooks" database table
+ *
+ * @since 2.0.0
+ */
+final class Webhooks_Table extends Table {
+
+	/**
+     * Table name
+     *
+     * @since 2.0.0
+     * @var string
+     */
+	protected $name = 'webhooks';
+
+	/**
+	 * Is this table global?
+	 *
+	 * @since 2.0.0
+	 * @var boolean
+	 */
+	protected $global = true;
+
+	/**
+	 * Table current version
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $version = '2.0.1-revision.20230601';
+
+	/**
+	 * List of table upgrades.
+	 *
+	 * @var array
+	 */
+	protected $upgrades = array(
+		'2.0.1-revision.20230601' => 20_230_601,
+	);
+
+	/**
+	 * Webhook constructor.
+	 *
+	 * @access public
+	 * @since  2.0.0
+	 * @return void
+	 */
+	public function __construct() {
+
+		parent::__construct();
+
+	} // end __construct;
+
+	/**
+	 * Setup the database schema
+	 *
+	 * @access protected
+	 * @since  2.0.0
+	 * @return void
+	 */
+	protected function set_schema() {
+
+		// phpcs:disable
+
+		$this->schema = "id bigint(20) NOT NULL auto_increment,
+			migrated_from_id bigint(20) DEFAULT NULL,
+			name varchar(191) NOT NULL,
+			webhook_url varchar(191) NOT NULL,
+			event varchar(40) NOT NULL,
+			event_count int(10) default 0,
+			active tinyint(4) default 1,
+			hidden tinyint(4) default 0,
+			integration varchar(191) NOT NULL,
+			date_last_failed datetime NOT NULL,
+			date_created datetime NULL,
+			date_modified datetime NULL,
+			PRIMARY KEY (id),
+			KEY event (event)";
+
+			// phpcs:enable
+
+	} // end set_schema;
+	/**
+	 * Fixes the datetime columns to accept null.
+	 *
+	 * @since 2.1.2
+	 */
+	protected function __20230601(): bool {
+
+		$null_columns = array(
+			'date_created',
+			'date_modified',
+		);
+
+		foreach ($null_columns as $column) {
+
+			$query = "ALTER TABLE {$this->table_name} MODIFY COLUMN `{$column}` datetime DEFAULT NULL;";
+
+			$result = $this->get_db()->query($query);
+
+			if (!$this->is_success($result)) {
+
+				return false;
+
+			} // end if;
+
+		} // end foreach;
+
+		return true;
+
+	} // end __20230601;
+
+} // end class Webhooks_Table;