<?php
/**
 * Default Ajax hooks.
 *
 * @package WP_Ultimo
 * @subpackage Ajax
 * @since 2.0.0
 */

namespace WP_Ultimo;

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

/**
 * Adds a lighter ajax option to WP Multisite WaaS.
 *
 * @since 1.9.14
 */
class Ajax {

	use \WP_Ultimo\Traits\Singleton;

	/**
	 * Sets up the listeners.
	 *
	 * @since 2.0.0
	 */
	public function __construct() {
		/*
		 * Load search endpoints.
		 */
		add_action('wu_ajax_wu_search', [$this, 'search_models']);

		/*
		 * Adds the Selectize templates to the admin_footer.
		 */
		add_action('in_admin_footer', [$this, 'render_selectize_templates']);

		/*
		 * Load search endpoints.
		 */
		add_action('wp_ajax_wu_list_table_fetch_ajax_results', [$this, 'refresh_list_table']);
	}

	/**
	 * Reverts the name of the table being processed.
	 *
	 * @since 2.0.0
	 *
	 * @param string $table_id The ID of the table in the format "line_item_list_table".
	 */
	private function get_table_class_name($table_id): string {

		return str_replace(' ', '_', (ucwords(str_replace('_', ' ', $table_id))));
	}

	/**
	 * Serves the pagination and search results of a list table ajax query.
	 *
	 * @since 2.0.0
	 * @return void
	 */
	public function refresh_list_table(): void {

		$table_id = wu_request('table_id');

		$class_name = $this->get_table_class_name($table_id);

		$full_class_name = "\\WP_Ultimo\\List_Tables\\{$class_name}";

		if (class_exists($full_class_name)) {
			$table = new $full_class_name();

			$table->ajax_response();
		}

		do_action('wu_list_table_fetch_ajax_results', $table_id);
	}

	/**
	 * Search models using our ajax endpoint.
	 *
	 * @since 2.0.0
	 * @return void
	 */
	public function search_models(): void {

		/**
		 * Fires before the processing of the search request.
		 *
		 * @since 2.0.0
		 */
		do_action('wu_before_search_models');

		if (wu_request('model') === 'all') {
			$this->search_all_models();

			return;
		}

		$args = wp_parse_args(
			$_REQUEST,
			[
				'model'   => 'membership',
				'query'   => [],
				'exclude' => [],
			]
		);

		$query = array_merge(
			$args['query'],
			[
				'number' => -1,
			]
		);

		if ($args['exclude']) {
			if (is_string($args['exclude'])) {
				$args['exclude'] = explode(',', $args['exclude']);

				$args['exclude'] = array_map('trim', $args['exclude']);
			}

			$query['id__not_in'] = $args['exclude'];
		}

		if (wu_get_isset($args, 'include')) {
			if (is_string($args['include'])) {
				$args['include'] = explode(',', $args['include']);

				$args['include'] = array_map('trim', $args['include']);
			}

			$query['id__in'] = $args['include'];
		}

		/*
		 * Deal with site
		 */
		if ('site' === $args['model']) {
			if (wu_get_isset($query, 'id__in')) {
				$query['blog_id__in'] = $query['id__in'];

				unset($query['id__in']);
			}

			if (wu_get_isset($query, 'id__not_in')) {
				$query['blog_id__not_in'] = $query['id__not_in'];

				unset($query['id__not_in']);
			}
		}

		$results = [];

		if ('user' === $args['model']) {
			$results = $this->search_wordpress_users($query);
		} elseif ('page' === $args['model']) {
			$results = get_posts(
				[
					'post_type'   => 'page',
					'post_status' => 'publish',
					'numberposts' => -1,
					'exclude'     => $query['id__not_in'] ?? '',
				]
			);
		} elseif ('setting' === $args['model']) {
			$results = $this->search_wp_ultimo_setting($query);
		} else {
			$model_func = 'wu_get_' . strtolower((string) $args['model']) . 's';

			if (function_exists($model_func)) {
				$results = $model_func($query);
			}
		}

		// Try search by hash if do not have any result
		if (empty($results)) {
			$model_func = 'wu_get_' . strtolower((string) $args['model']) . '_by_hash';

			if (function_exists($model_func)) {
				$result = $model_func(trim((string) $query['search'], '*'));

				$results = $result ? [$result] : [];
			}
		}

		wp_send_json($results);

		exit;
	}

	/**
	 * Search all models for Jumper.
	 *
	 * @since 2.0.0
	 * @return void
	 */
	public function search_all_models(): void {

		$query = array_merge(
			wu_request('query', []),
			[
				'number' => 10000,
			]
		);

		$results_user = array_map(
			function ($item) {

				$item->model = 'user';

				$item->group = 'Users';

				$item->value = network_admin_url("user-edit.php?user_id={$item->ID}");

				return $item;
			},
			$this->search_wordpress_users($query)
		);

		$results_settings = array_map(
			function ($item) {

				$item['model'] = 'setting';

				$item['group'] = 'Settings';

				$item['value'] = $item['url'];

				return $item;
			},
			$this->search_wp_ultimo_setting($query)
		);

		$data = array_merge($results_user, $results_settings);

		/**
		 * Allow plugin developers to add more search models functions.
		 *
		 * @since 2.0.0
		 */
		$data_sources = apply_filters(
			'wu_search_models_functions',
			[
				'wu_get_customers',
				'wu_get_products',
				'wu_get_plans',
				'wu_get_domains',
				'wu_get_sites',
				'wu_get_memberships',
				'wu_get_payments',
				'wu_get_broadcasts',
				'wu_get_checkout_forms',
			]
		);

		foreach ($data_sources as $function) {
			$results = call_user_func($function, $query);

			array_map(
				function ($item) {

					$url = str_replace('_', '-', (string) $item->model);

					$item->value = wu_network_admin_url(
						"wp-ultimo-edit-{$url}",
						[
							'id' => $item->get_id(),
						]
					);

					$item->group = ucwords((string) $item->model) . 's';

					return $item;
				},
				$results
			);

			$discount_codes = array_map(
				function ($item) {

					$discount = $item->to_array();

					$discount['value'] = wu_network_admin_url(
						'wp-ultimo-edit-discount-code',
						[
							'id' => $discount['id'],
						]
					);

					$discount['group'] = 'Discount Codes';

					return $discount;
				},
				wu_get_discount_codes($query)
			);

			$data = array_merge($data, $results, $discount_codes);
		}

		wp_send_json($data);
	}

	/**
	 * Search for WP Multisite WaaS settings to help customers find them.
	 *
	 * @since 2.0.0
	 *
	 * @param array $query Query arguments.
	 */
	public function search_wp_ultimo_setting($query): array {

		$sections = \WP_Ultimo\Settings::get_instance()->get_sections();

		$all_fields = [];

		foreach ($sections as $section_slug => $section) {
			$section['fields'] = array_map(
				function ($item) use ($section, $section_slug) {

					$item['section'] = $section_slug;

					$item['section_title'] = wu_get_isset($section, 'title', '');

					$item['url'] = wu_network_admin_url(
						'wp-ultimo-settings',
						[
							'tab' => $section_slug,
						]
					) . '#' . $item['setting_id'];

					return $item;
				},
				$section['fields']
			);

			$all_fields = array_merge($all_fields, $section['fields']);
		}

		$_settings = \Arrch\Arrch::find(
			$all_fields,
			[
				'sort_key' => 'title',
				'where'    => [
					['setting_id', '~', trim((string) $query['search'], '*')],
					['type', '!=', 'header'],
				],
			]
		);

		return array_values($_settings);
	}

	/**
	 * Handles the special case of searching native WP users.
	 *
	 * @since 2.0.0
	 *
	 * @param array $query Query arguments.
	 * @return array
	 */
	public function search_wordpress_users($query) {

		$results = get_users(
			[
				'blog_id'        => 0,
				'search'         => '*' . $query['search'] . '*',
				'search_columns' => [
					'ID',
					'user_login',
					'user_email',
					'user_url',
					'user_nicename',
					'display_name',
				],
			]
		);

		$results = array_map(
			function ($item) {

				$item->data->user_pass = '';

				$item->data->avatar = get_avatar(
					$item->data->user_email,
					40,
					'identicon',
					'',
					[
						'force_display' => true,
						'class'         => 'wu-rounded-full wu-mr-3',
					]
				);

				return $item->data;
			},
			$results
		);

		return $results;
	}

	/**
	 * Adds the selectize templates to the admin footer.
	 *
	 * @since 2.0.0
	 * @return void
	 */
	public function render_selectize_templates(): void {

		if (current_user_can('manage_network')) {
			wu_get_template('ui/selectize-templates');
		}
	}
}