<?php

if (! defined('ABSPATH')) {
	exit; // Exit if accessed directly.
}

/**
 * Pages Widget
 *
 * @package Essential_Widgets
 */


/**
 * Makes a custom Widget for Displaying About
 *
 * Learn more: http://codex.wordpress.org/Widgets_API#Developing_Widgets
 *
 * @package Essential_Widgets
 */
if (! function_exists('ew_get_meta_keys')) :
	/**
	 * Returns a list of distinct, non-private post meta keys for use in the
	 * widget's "Order by meta key" dropdown.
	 *
	 * Named ew_get_meta_keys() (not get_meta_keys()) to avoid colliding with
	 * WordPress core's own get_meta_keys() in wp-admin/includes/post.php.
	 *
	 * @since 3.2
	 * @return array
	 */
	function ew_get_meta_keys()
	{ // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound -- guarded with function_exists(); shared helper used by both the free and pro Pages widgets.
		global $wpdb;

		$cached_keys = get_transient('ew_meta_keys');
		if (false !== $cached_keys) {
			return $cached_keys;
		}

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- distinct meta key lookup has no WP_Query equivalent; result is cached via transient below.
		$keys = $wpdb->get_col("SELECT DISTINCT meta_key FROM {$wpdb->postmeta} WHERE meta_key NOT LIKE '\_%' ORDER BY meta_key ASC");
		$keys = is_array($keys) ? $keys : array();

		set_transient('ew_meta_keys', $keys, HOUR_IN_SECONDS);

		return $keys;
	}
endif;

if (! class_exists('EW_Pages')) :
	class EW_Pages extends WP_Widget // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedClassFound -- EW_ is this plugin's abbreviated prefix; wrapped in class_exists() guard.
	{


		/**
		 * Holds widget settings defaults, populated in constructor.
		 *
		 * @var array
		 */
		protected $defaults;

		public function __construct()
		{

			// Set up the defaults.
			$this->defaults = array(
				'title'        => esc_attr__('Pages', 'essential-widgets'),
				'post_type'    => 'page',
				'depth'        => 0,
				'number'       => '',
				'offset'       => '',
				'child_of'     => '',
				'include'      => '',
				'exclude'      => '', // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude -- Required wp_list_pages() parameter, not a WP_Query post__not_in clause.
				'exclude_tree' => '',
				'meta_key'     => '', // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Required wp_list_pages() parameter.
				'meta_value'   => '', // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_value -- Required wp_list_pages() parameter.
				'authors'      => '',
				'link_before'  => '',
				'link_after'   => '',
				'show_date'    => '',
				'hierarchical' => true,
				'sort_column'  => 'post_title',
				'sort_order'   => 'ASC',
				'date_format'  => get_option('date_format'),
			);

			$widget_ops = array(
				'classname'   => 'essential-widgets ew-pages ewpages',
				'description' => esc_html__('Displays a list of pages.', 'essential-widgets'),
			);

			$control_ops = array(
				'id_base' => 'ew-pages',
			);

			parent::__construct(
				'ew-pages', // Base ID
				esc_html__('EW: Pages', 'essential-widgets'), // Name
				$widget_ops,
				$control_ops
			);
		}

		/**
		 * Displays the widget control options in the Widgets admin screen.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $instance
		 * @param  void
		 */
		public function form($instance)
		{
			// Merge the user-selected arguments with the defaults.
			$instance = wp_parse_args((array) $instance, $this->defaults);

			$post_types = get_post_types(
				array(
					'public'       => true,
					'hierarchical' => true,
				),
				'objects'
			);

			$sort_order = array(
				'ASC'  => esc_attr__('Ascending', 'essential-widgets'),
				'DESC' => esc_attr__('Descending', 'essential-widgets'),
			);

			$sort_column = array(
				'post_author'   => esc_attr__('Author', 'essential-widgets'),
				'post_date'     => esc_attr__('Date', 'essential-widgets'),
				'ID'            => esc_attr__('ID', 'essential-widgets'),
				'menu_order'    => esc_attr__('Menu Order', 'essential-widgets'),
				'post_modified' => esc_attr__('Modified', 'essential-widgets'),
				'post_name'     => esc_attr__('Slug', 'essential-widgets'),
				'post_title'    => esc_attr__('Title', 'essential-widgets'),
			);

			$show_date = array(
				''         => esc_attr__('Select', 'essential-widgets'),
				'created'  => esc_attr__('Created', 'essential-widgets'),
				'modified' => esc_attr__('Modified', 'essential-widgets'),
			);

			$meta_key = array_merge(array(''), (array) get_meta_keys()); ?>

			<p>
				<label>
					<?php esc_html_e('Title:', 'essential-widgets'); ?>
					<input type="text" class="widefat" id="<?php echo esc_attr($this->get_field_id('title')); ?>" name="<?php echo esc_attr($this->get_field_name('title')); ?>" value="<?php echo esc_attr($instance['title']); ?>" placeholder="<?php echo esc_attr($this->defaults['title']); ?>" />
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Post Type:', 'essential-widgets'); ?>

					<select class="widefat" name="<?php echo esc_attr($this->get_field_name('post_type')); ?>">

						<?php foreach ($post_types as $post_type) : ?>

							<option value="<?php echo esc_attr($post_type->name); ?>" <?php selected($instance['post_type'], $post_type->name); ?>><?php echo esc_html($post_type->labels->singular_name); ?></option>

						<?php endforeach; ?>

					</select>
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Order:', 'essential-widgets'); ?>

					<select class="widefat" name="<?php echo esc_attr($this->get_field_name('sort_order')); ?>">

						<?php foreach ($sort_order as $option_value => $option_label) : ?>

							<option value="<?php echo esc_attr($option_value); ?>" <?php selected($instance['sort_order'], $option_value); ?>><?php echo esc_html($option_label); ?></option>

						<?php endforeach; ?>

					</select>
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Order By:', 'essential-widgets'); ?>

					<select class="widefat" name="<?php echo esc_attr($this->get_field_name('sort_column')); ?>">

						<?php foreach ($sort_column as $option_value => $option_label) : ?>

							<option value="<?php echo esc_attr($option_value); ?>" <?php selected($instance['sort_column'], $option_value); ?>><?php echo esc_html($option_label); ?></option>

						<?php endforeach; ?>

					</select>
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Depth:', 'essential-widgets'); ?>
					<input type="number" class="widefat" size="5" min="0" name="<?php echo esc_attr($this->get_field_name('depth')); ?>" value="<?php echo esc_attr($instance['depth']); ?>" placeholder="0" />
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Number:', 'essential-widgets'); ?>
					<input type="number" class="widefat" size="5" min="0" name="<?php echo esc_attr($this->get_field_name('number')); ?>" value="<?php echo esc_attr($instance['number']); ?>" placeholder="0" />
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Offset:', 'essential-widgets'); ?>
					<input type="number" class="widefat" size="5" min="0" name="<?php echo esc_attr($this->get_field_name('offset')); ?>" value="<?php echo esc_attr($instance['offset']); ?>" placeholder="0" />
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Child Of:', 'essential-widgets'); ?>
					<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('child_of')); ?>" value="<?php echo esc_attr($instance['child_of']); ?>" placeholder="0" />
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Include:', 'essential-widgets'); ?>
					<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('include')); ?>" value="<?php echo esc_attr($instance['include']); ?>" placeholder="1,2,3&hellip;" />
				</label>
			</p>

			<p>
				<label>
					<?php esc_html_e('Exclude:', 'essential-widgets'); ?>
					<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('exclude')); ?>" value="<?php echo esc_attr($instance['exclude']); ?>" placeholder="1,2,3&hellip;" />
				</label>
			</p>

			<p class="button-primary ect-toggle-btn more">
				<span class="ect-more-text"><?php esc_html_e('More Options', 'essential-widgets'); ?><i class="dashicons dashicons-arrow-down"></i></span>
				<span class="ect-hide-text"><?php esc_html_e('Hide Options', 'essential-widgets'); ?><i class="dashicons dashicons-arrow-up"></i></span>

			<div class="advanced-section">

				<p>
					<label>
						<?php esc_html_e('Exclude Tree:', 'essential-widgets'); ?>
						<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('exclude_tree')); ?>" value="<?php echo esc_attr($instance['exclude_tree']); ?>" placeholder="1,2,3&hellip;" />
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Meta Key:', 'essential-widgets'); ?>

						<select class="widefat" name="<?php echo esc_attr($this->get_field_name('meta_key')); ?>">

							<?php foreach ($meta_key as $meta) : ?>

								<option value="<?php echo esc_attr($meta); ?>" <?php selected($instance['meta_key'], $meta); ?>><?php echo esc_html($meta); ?></option>

							<?php endforeach; ?>

						</select>
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Meta Value:', 'essential-widgets'); ?>
						<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('meta_value')); ?>" value="<?php echo esc_attr($instance['meta_value']); ?>" />
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Authors:', 'essential-widgets'); ?>
						<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('authors')); ?>" value="<?php echo esc_attr($instance['authors']); ?>" placeholder="1,2,3&hellip;" />
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Link Before:', 'essential-widgets'); ?>
						<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('link_before')); ?>" value="<?php echo esc_attr($instance['link_before']); ?>" />
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Link After:', 'essential-widgets'); ?>
						<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('link_after')); ?>" value="<?php echo esc_attr($instance['link_after']); ?>" />
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Show Date:', 'essential-widgets'); ?>

						<select class="widefat" name="<?php echo esc_attr($this->get_field_name('show_date')); ?>">

							<?php foreach ($show_date as $option_value => $option_label) : ?>

								<option value="<?php echo esc_attr($option_value); ?>" <?php selected($instance['show_date'], $option_value); ?>><?php echo esc_html($option_label); ?></option>

							<?php endforeach; ?>

						</select>
					</label>
				</p>

				<p>
					<label>
						<?php esc_html_e('Date Format:', 'essential-widgets'); ?>
						<input type="text" class="widefat" name="<?php echo esc_attr($this->get_field_name('date_format')); ?>" value="<?php echo esc_attr($instance['date_format']); ?>" placeholder="<?php echo esc_attr(get_option('date_format')); ?>" />
					</label>
				</p>

				<p>
					<label>
						<input type="checkbox" <?php checked($instance['hierarchical'], true); ?> name="<?php echo esc_attr($this->get_field_name('hierarchical')); ?>" />
						<?php esc_html_e('Hierarchical?', 'essential-widgets'); ?>
					</label>
				</p>

			</div><!-- .advanced-section -->

			<div style="clear:both;">&nbsp;</div>
<?php
		}

		/**
		 * update the particular instant
		 *
		 * This function should check that $new_instance is set correctly.
		 * The newly calculated value of $instance should be returned.
		 * If "false" is returned, the instance won't be saved/updated.
		 *
		 * $new_instance New settings for this instance as input by the user via form()
		 * $old_instance Old settings for this instance
		 * Settings to save or bool false to cancel saving
		 */
		public function update($new_instance, $old_instance)
		{
			$instance = $old_instance;

			// Sanitize title.
			$instance['title'] = sanitize_text_field($new_instance['title']);

			// Strip tags.
			$instance['meta_key']    = wp_strip_all_tags($new_instance['meta_key']); // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Required wp_list_pages() parameter.
			$instance['meta_value']  = wp_strip_all_tags($new_instance['meta_value']); // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_value -- Required wp_list_pages() parameter.
			$instance['date_format'] = wp_strip_all_tags($new_instance['date_format']);

			// Sanitize key.
			$instance['post_type'] = sanitize_key($new_instance['post_type']);

			// Whitelist options.
			$sort_order  = array('ASC', 'DESC');
			$sort_column = array('post_author', 'post_date', 'ID', 'menu_order', 'post_modified', 'post_name', 'post_title');
			$show_date   = array('', 'created', 'modified');

			$instance['sort_column'] = in_array($new_instance['sort_column'], $sort_column, true) ? $new_instance['sort_column'] : 'post_title';
			$instance['sort_order']  = in_array($new_instance['sort_order'], $sort_order, true)  ? $new_instance['sort_order']  : 'ASC';
			$instance['show_date']   = in_array($new_instance['show_date'], $show_date, true)   ? $new_instance['show_date']   : '';

			// Text boxes. Make sure user can use 'unfiltered_html'.
			$instance['link_before'] = current_user_can('unfiltered_html') ? $new_instance['link_before'] : wp_kses_post($new_instance['link_before']);
			$instance['link_after']  = current_user_can('unfiltered_html') ? $new_instance['link_after'] : wp_kses_post($new_instance['link_after']);

			// Integers.
			$instance['number'] 	= absint($new_instance['number']);
			$instance['depth']    	= absint($new_instance['depth']);
			$instance['child_of']	= absint($new_instance['child_of']);
			$instance['offset']		= absint($new_instance['offset']);

			// Sanitize text field
			$instance['include']      = sanitize_text_field($new_instance['include']);
			$instance['exclude']      = sanitize_text_field($new_instance['exclude']); // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude -- Required wp_list_pages() parameter.
			$instance['exclude_tree'] = sanitize_text_field($new_instance['exclude_tree']);
			$instance['authors']      = sanitize_text_field($new_instance['authors']);

			// Then restrict to numbers & commas
			$instance['include']      = preg_replace('/[^0-9,]/', '', $new_instance['include']);
			$instance['exclude']      = preg_replace('/[^0-9,]/', '', $new_instance['exclude']); // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude -- Required wp_list_pages() parameter.
			$instance['exclude_tree'] = preg_replace('/[^0-9,]/', '', $new_instance['exclude_tree']);
			$instance['authors']      = preg_replace('/[^0-9,]/', '', $new_instance['authors']);

			// Checkboxes.
			$instance['hierarchical'] = isset($new_instance['hierarchical']) ? 1 : 0;

			// Return sanitized options.
			return $instance;
		}

		/**
		 * Displays the Widget in the front-end.
		 *
		 * $args Display arguments including before_title, after_title, before_widget, and after_widget.
		 * $instance The settings for the particular instance of the widget
		 */
		public function widget($args, $instance)
		{
			// Merge instance with defaults.
			$instance = wp_parse_args($instance, $this->defaults);

			// Escape widget wrapper attributes.
			echo wp_kses_post($args['before_widget']);

			// If a title was input by the user, display it safely.
			if (! empty($instance['title'])) {
				echo wp_kses_post($args['before_title']);

				// Apply filters to title, then escape it for output
				$title = apply_filters('widget_title', $instance['title'], $instance, $this->id_base);
				echo esc_html($title);

				echo wp_kses_post($args['after_title']);
			}

			// Output the main content of the widget (shortcode output)
			echo wp_kses_post($this->shortcode($instance));

			// Close the widget wrapper safely.
			echo wp_kses_post($args['after_widget']);
		}

		public function shortcode($atts)
		{
			// Set the $title_li and $echo to false.
			$atts['title_li'] = false;
			$atts['echo']     = false;

			$ew_pages = '';

			// Only show this title in block element and not on widget.
			if (isset($atts['is_block']) && true === $atts['is_block'] && !empty($atts['title'])) {
				$ew_pages .= '<h2 class="ew-page-block-title">' . esc_html($atts['title']) . '</h2>';
			}

			// Output the page list.
			$ew_pages .= '<ul class="pages">' . str_replace(
				array("\r", "\n", "\t"),
				'',
				wp_list_pages($atts)
			) . '</ul>';

			return wp_kses_post($ew_pages);
		}
	}
endif;


if (! function_exists('ew_pages_register')) :
	/**
	 * Intiate About_Widget Class.
	 *
	 * @since 1.0.0
	 */
	function ew_pages_register()
	{ // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound -- ew_ is this plugin's abbreviated prefix.
		register_widget('EW_Pages');
	}
	add_action('widgets_init', 'ew_pages_register');
endif;