<?php
/**
 * Signup Fields Manager
 *
 * Keeps track of the registered signup field types.
 *
 * @package WP_Ultimo
 * @subpackage Managers/Signup_Fields
 * @since 2.0.0
 */

namespace WP_Ultimo\Managers;

use WP_Ultimo\Managers\Base_Manager;
use WP_Ultimo\Logger;

// Exit if accessed directly
defined('ABSPATH') || exit;

/**
 * Keeps track of the registered signup field types.
 *
 * @since 2.0.0
 */
class Signup_Fields_Manager extends Base_Manager {

	use \WP_Ultimo\Traits\Singleton;

	/**
	 * Keeps the instantiated fields.
	 *
	 * @since 2.0.0
	 * @var array
	 */
	protected $instantiated_field_types;

	/**
	 * Returns the list of registered signup field types.
	 *
	 * Developers looking for add new types of fields to the signup
	 * should use the filter wu_checkout_forms_field_types to do so.
	 *
	 * @see wu_checkout_forms_field_types
	 *
	 * @since 2.0.0
	 * @return array
	 */
	public function get_field_types() {

		$field_types = [
			'pricing_table'      => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Pricing_Table::class,
			'period_selection'   => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Period_Selection::class,
			'products'           => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Products::class,
			'template_selection' => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Template_Selection::class,
			'username'           => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Username::class,
			'email'              => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Email::class,
			'password'           => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Password::class,
			'site_title'         => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Site_Title::class,
			'site_url'           => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Site_Url::class,
			'discount_code'      => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Discount_Code::class,
			'order_summary'      => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Order_Summary::class,
			'payment'            => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Payment::class,
			'order_bump'         => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Order_Bump::class,
			'billing_address'    => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Billing_Address::class,
			'steps'              => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Steps::class,
			'text'               => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Text::class,
			'checkbox'           => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Checkbox::class,
			'color_picker'       => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Color::class,
			'select'             => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Select::class,
			'hidden'             => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Hidden::class,
			'shortcode'          => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Shortcode::class,
			'terms_of_use'       => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Terms_Of_Use::class,
			'submit_button'      => \WP_Ultimo\Checkout\Signup_Fields\Signup_Field_Submit_Button::class,
		];

		/*
		 * Allow developers to add new field types
		 */
		do_action('wu_register_field_types');

		/**
		 * Our APIs to add new field types hook into here.
		 * Do not use this filter directly. Use the wu_register_field_type()
		 * function instead.
		 *
		 * @see wu_register_field_type()
		 *
		 * @since 2.0.0
		 * @param array $field_types
		 * @return array
		 */
		return apply_filters('wu_checkout_field_types', $field_types);
	}

	/**
	 * Instantiate a field type.
	 *
	 * @since 2.0.0
	 *
	 * @param string $class_name The class name.
	 * @return \WP_Ultimo\Checkout\Signup_Fields\Base_Signup_Field
	 */
	public function instantiate_field_type($class_name) {

		return new $class_name();
	}

	/**
	 * Returns an array with all fields, instantiated.
	 *
	 * @since 2.0.0
	 * @return array
	 */
	public function get_instantiated_field_types() {

		if ($this->instantiated_field_types === null) {
			$this->instantiated_field_types = array_map([$this, 'instantiate_field_type'], $this->get_field_types());
		}

		return $this->instantiated_field_types;
	}

	/**
	 * Returns a list of all the required fields that must be present on a CF.
	 *
	 * @since 2.0.0
	 * @return array
	 */
	public function get_required_fields() {

		$fields = $this->get_instantiated_field_types();

		$fields = array_filter($fields, fn($item) => $item->is_required());

		return $fields;
	}

	/**
	 * Returns a list of all the user fields.
	 *
	 * @since 2.0.0
	 * @return array
	 */
	public function get_user_fields() {

		$fields = $this->get_instantiated_field_types();

		$fields = array_filter($fields, fn($item) => $item->is_user_field());

		return $fields;
	}

	/**
	 * Returns a list of all the site fields.
	 *
	 * @since 2.0.0
	 * @return array
	 */
	public function get_site_fields() {

		$fields = $this->get_instantiated_field_types();

		$fields = array_filter($fields, fn($item) => $item->is_site_field());

		return $fields;
	}

	/**
	 * Returns a list of all editor fields registered.
	 *
	 * @since 2.0.0
	 * @return array
	 */
	public function get_all_editor_fields() {

		$all_editor_fields = [];

		$field_types = $this->get_instantiated_field_types();

		foreach ($field_types as $field_type) {
			$all_editor_fields = array_merge($all_editor_fields, $field_class->get_fields());
		}

		return $all_editor_fields;
	}
}