<?php
/**
 * Widget API: Widget Visibility
 *
 * Forked from Jetpack module Widget conditions.
 *
 * @link www.italystrap.com
 * @since 2.3.0
 *
 * @package ItalyStrap\Widget
 */

namespace ItalyStrap\Widgets\Visibility;

/**
 * Visibility_Admin
 */
class Visibility_Admin extends Visibility_Base {

	public static function init() {

		add_action( 'sidebar_admin_setup', array( __CLASS__, 'widget_admin_setup' ) );
		add_filter( 'widget_update_callback', array( __CLASS__, 'widget_update' ), 10, 3 );
		add_action( 'in_widget_form', array( __CLASS__, 'widget_conditions_admin' ), 10, 3 );
		add_action( 'wp_ajax_widget_conditions_options', array( __CLASS__, 'widget_conditions_options' ) );
		add_action( 'wp_ajax_widget_conditions_has_children', array( __CLASS__, 'widget_conditions_has_children' ) );
	}

	public static function widget_admin_setup() {
		if( is_rtl() ) {
			wp_enqueue_style( 'widget-conditions', plugins_url( 'assets/rtl/widget-conditions-rtl.css', __FILE__ ) );
		} else {
			wp_enqueue_style( 'widget-conditions', plugins_url( 'assets/widget-conditions.css', __FILE__ ) );
		}
		wp_enqueue_style( 'widget-conditions', plugins_url( 'assets/widget-conditions.css', __FILE__ ) );
		wp_enqueue_script( 'widget-conditions', plugins_url( 'assets/widget-conditions.js', __FILE__ ), array( 'jquery', 'jquery-ui-core' ), 20140721, true );
	}

	/**
	 * On an AJAX update of the widget settings, process the display conditions.
	 *
	 * @param array $new_instance New settings for this instance as input by the user.
	 * @param array $old_instance Old settings for this instance.
	 * @return array Modified settings.
	 */
	public static function widget_update( $instance, $new_instance, $old_instance ) {
		if ( empty( $_POST['conditions'] ) ) {
			return $instance;
		}

		$post_conditions = $_POST['conditions'];

		$conditions = array();
		$conditions['action'] = sanitize_text_field( $post_conditions['action'] );
		$conditions['rules'] = array();

		foreach ( $post_conditions['rules_major'] as $index => $major_rule ) {

			if ( ! $major_rule ) {
				continue;
			}

			$conditions['rules'][] = array(
				'major' => sanitize_text_field( $major_rule ),
				'minor' => isset( $post_conditions['rules_minor'][ $index ] ) ? sanitize_text_field( $post_conditions['rules_minor'][ $index ] ) : '',
				'has_children' => isset( $post_conditions['page_children'][ $index ] ) ? true : false,
			);
		}

		if ( ! empty( $conditions['rules'] ) )
			$instance['conditions'] = $conditions;
		else
			unset( $instance['conditions'] );

		if (
				( isset( $instance['conditions'] ) && ! isset( $old_instance['conditions'] ) )
				||
				(
					isset( $instance['conditions'], $old_instance['conditions'] )
					&&
					serialize( $instance['conditions'] ) != serialize( $old_instance['conditions'] )
				)
			) {

			/**
			 * Fires after the widget visibility conditions are saved.
			 *
			 * @module widget-visibility
			 *
			 * @since 2.4.0
			 */
			do_action( 'widget_conditions_save' );
		}
		else if ( ! isset( $instance['conditions'] ) && isset( $old_instance['conditions'] ) ) {

			/**
			 * Fires after the widget visibility conditions are deleted.
			 *
			 * @module widget-visibility
			 *
			 * @since 2.4.0
			 */
			do_action( 'widget_conditions_delete' );
		}

		return $instance;
	}

	/**
	 * Add the widget conditions to each widget in the admin.
	 *
	 * @param $widget unused.
	 * @param $return unused.
	 * @param array $instance The widget settings.
	 */
	public static function widget_conditions_admin( $widget, $return, array $instance = array() ) {

		$conditions = array();

		if ( isset( $instance['conditions'] ) ) {
			$conditions = $instance['conditions'];
		}

		if ( ! isset( $conditions['action'] ) ) {
			$conditions['action'] = 'show';
		}

		if ( empty( $conditions['rules'] ) ) {
			$conditions['rules'][] = array( 'major' => '', 'minor' => '', 'has_children' => '' );
		}

		$widget_conditional = '';
		if ( empty( $_POST['widget-conditions-visible'] ) || '0' == $_POST['widget-conditions-visible'] ) {

			$widget_conditional = 'widget-conditional-hide';
		}

		$widget_conditions_visible_value = 0;
		if ( isset( $_POST['widget-conditions-visible'] ) ) {
			$widget_conditions_visible_value = (int) $_POST['widget-conditions-visible'];
		}
		?>
		<div class="widget-conditional <?php echo $widget_conditional; // XSS ok. ?>">

			<input type="hidden" name="widget-conditions-visible" value="<?php echo $widget_conditions_visible_value; // XSS ok. ?>" />

			<?php
			if ( ! isset( $_POST['widget-conditions-visible'] ) ) {

				?><a href="#" class="button display-options"><?php _e( 'Visibility', 'italystrap' ); ?></a><?php

			}
			?>
			<div class="widget-conditional-inner">
				<div class="condition-top">
					<?php printf(
					_x( '%s if:', 'placeholder: dropdown menu to select widget visibility; hide if or show if', 'italystrap' ),
					'<select name="conditions[action]"><option value="show" ' . selected( $conditions['action'], 'show', false ) . '>' . esc_html_x( 'Show', 'Used in the "%s if:" translation for the widget visibility dropdown', 'italystrap' ) . '</option><option value="hide" ' . selected( $conditions['action'], 'hide', false ) . '>' . esc_html_x( 'Hide', 'Used in the "%s if:" translation for the widget visibility dropdown', 'italystrap' ) . '</option></select>'
					); ?>
				</div><!-- .condition-top -->

				<div class="conditions">
					<?php

					foreach ( $conditions['rules'] as $rule ) {
						$rule = wp_parse_args( $rule, array( 'major' => '', 'minor' => '', 'has_children' => '' ) );
						?>
						<div class="condition">
							<div class="selection alignleft">
								<select class="conditions-rule-major" name="conditions[rules_major][]">
									<option value="" <?php selected( "", $rule['major'] ); ?>><?php echo esc_html_x( '-- Select --', 'Used as the default option in a dropdown list', 'italystrap' ); ?></option>
									<option value="category" <?php selected( "category", $rule['major'] ); ?>><?php esc_html_e( 'Category', 'italystrap' ); ?></option>
									<option value="author" <?php selected( "author", $rule['major'] ); ?>><?php echo esc_html_x( 'Author', 'Noun, as in: "The author of this post is..."', 'italystrap' ); ?></option>

									<?php if( ! ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ) { // this doesn't work on .com because of caching ?>
										<option value="loggedin" <?php selected( "loggedin", $rule['major'] ); ?>><?php echo esc_html_x( 'User', 'Noun', 'italystrap' ); ?></option>
										<option value="role" <?php selected( "role", $rule['major'] ); ?>><?php echo esc_html_x( 'Role', 'Noun, as in: "The user role of that can access this widget is..."', 'italystrap' ); ?></option>
									<?php } ?>

									<option value="tag" <?php selected( "tag", $rule['major'] ); ?>><?php echo esc_html_x( 'Tag', 'Noun, as in: "This post has one tag."', 'italystrap' ); ?></option>
									<option value="date" <?php selected( "date", $rule['major'] ); ?>><?php echo esc_html_x( 'Date', 'Noun, as in: "This page is a date archive."', 'italystrap' ); ?></option>
									<option value="page" <?php selected( "page", $rule['major'] ); ?>><?php echo esc_html_x( 'Page', 'Example: The user is looking at a page, not a post.', 'italystrap' ); ?></option>
									<option value="post_type" <?php selected( "post_type", $rule['major'] ); ?>><?php echo esc_html_x( 'Post Type', 'Example: the user is viewing a custom post type archive.', 'italystrap' ); ?></option>
									<?php if ( get_taxonomies( array( '_builtin' => false ) ) ) : ?>
										<option value="taxonomy" <?php selected( "taxonomy", $rule['major'] ); ?>><?php echo esc_html_x( 'Taxonomy', 'Noun, as in: "This post has one taxonomy."', 'italystrap' ); ?></option>
									<?php endif; ?>
								</select>

								<?php _ex( 'is', 'Widget Visibility: {Rule Major [Page]} is {Rule Minor [Search results]}', 'italystrap' ); ?>

								<select class="conditions-rule-minor" name="conditions[rules_minor][]" <?php if ( ! $rule['major'] ) { ?> disabled="disabled"<?php } ?> data-loading-text="<?php esc_attr_e( 'Loading...', 'italystrap' ); ?>">
									<?php self::widget_conditions_options_echo( $rule['major'], $rule['minor'] ); ?>
								</select>

								<span class="conditions-rule-has-children">
									<?php self::widget_conditions_has_children_echo( $rule['major'], $rule['minor'], $rule['has_children'] ); ?>
								</span>
							</div>

							<div class="condition-control">
								<span class="condition-conjunction"><?php echo esc_html_x( 'or', 'Shown between widget visibility conditions.', 'italystrap' ); ?></span>
								<div class="actions alignright">
									<a href="#" class="delete-condition"><?php esc_html_e( 'Delete', 'italystrap' ); ?></a> | <a href="#" class="add-condition"><?php esc_html_e( 'Add', 'italystrap' ); ?></a>
								</div>
							</div>

						</div><!-- .condition -->
						<?php
					}

					?>
				</div><!-- .conditions -->
			</div><!-- .widget-conditional-inner -->
		</div><!-- .widget-conditional -->
		<?php
	}

	/**
	 * Provided a second level of granularity for widget conditions.
	 */
	public static function widget_conditions_options_echo( $major = '', $minor = '' ) {
		if ( in_array( $major,  array( 'category', 'tag' ) ) && is_numeric( $minor ) ) {
			$minor = self::maybe_get_split_term( $minor, $major );
		}

		switch ( $major ) {
			case 'category':
				?>
				<option value=""><?php _e( 'All category pages', 'italystrap' ); ?></option>
				<?php

				$categories = get_categories( array( 'number' => 1000, 'orderby' => 'count', 'order' => 'DESC' ) );
				usort( $categories, array( __CLASS__, 'strcasecmp_name' ) );

				foreach ( $categories as $category ) {
					?>
					<option value="<?php echo esc_attr( $category->term_id ); ?>" <?php selected( $category->term_id, $minor ); ?>><?php echo esc_html( $category->name ); ?></option>
					<?php
				}
			break;
			case 'loggedin':
				?>
				<option value="loggedin" <?php selected( 'loggedin', $minor ); ?>><?php _e( 'Logged In', 'italystrap' ); ?></option>
				<option value="loggedout" <?php selected( 'loggedout', $minor ); ?>><?php _e( 'Logged Out', 'italystrap' ); ?></option>
				<?php
			break;
			case 'author':
				?>
				<option value=""><?php _e( 'All author pages', 'italystrap' ); ?></option>
				<?php

				foreach ( get_users( array( 'orderby' => 'name', 'exclude_admin' => true ) ) as $author ) {
					?>
					<option value="<?php echo esc_attr( $author->ID ); ?>" <?php selected( $author->ID, $minor ); ?>><?php echo esc_html( $author->display_name ); ?></option>
					<?php
				}
			break;
			case 'role':
				global $wp_roles;

				foreach ( $wp_roles->roles as $role_key => $role ) {
					?>
					<option value="<?php echo esc_attr( $role_key ); ?>" <?php selected( $role_key, $minor ); ?> ><?php echo esc_html( $role['name'] ); ?></option>
					<?php
				}
			break;
			case 'tag':
				?>
				<option value=""><?php _e( 'All tag pages', 'italystrap' ); ?></option>
				<?php

				$tags = get_tags( array( 'number' => 1000, 'orderby' => 'count', 'order' => 'DESC' ) );
				usort( $tags, array( __CLASS__, 'strcasecmp_name' ) );

				foreach ( $tags as $tag ) {
					?>
					<option value="<?php echo esc_attr($tag->term_id ); ?>" <?php selected( $tag->term_id, $minor ); ?>><?php echo esc_html( $tag->name ); ?></option>
					<?php
				}
			break;
			case 'date':
				?>
				<option value="" <?php selected( '', $minor ); ?>><?php _e( 'All date archives', 'italystrap' ); ?></option>
				<option value="day"<?php selected( 'day', $minor ); ?>><?php _e( 'Daily archives', 'italystrap' ); ?></option>
				<option value="month"<?php selected( 'month', $minor ); ?>><?php _e( 'Monthly archives', 'italystrap' ); ?></option>
				<option value="year"<?php selected( 'year', $minor ); ?>><?php _e( 'Yearly archives', 'italystrap' ); ?></option>
				<?php
			break;
			case 'page':
				// Previously hardcoded post type options.
				if ( ! $minor )
					$minor = 'post_type-page';
				else if ( 'post' == $minor )
					$minor = 'post_type-post';

				?>
				<option value="front" <?php selected( 'front', $minor ); ?>><?php _e( 'Front page', 'italystrap' ); ?></option>
				<option value="posts" <?php selected( 'posts', $minor ); ?>><?php _e( 'Posts page', 'italystrap' ); ?></option>
				<option value="archive" <?php selected( 'archive', $minor ); ?>><?php _e( 'Archive page', 'italystrap' ); ?></option>
				<option value="404" <?php selected( '404', $minor ); ?>><?php _e( '404 error page', 'italystrap' ); ?></option>
				<option value="search" <?php selected( 'search', $minor ); ?>><?php _e( 'Search results', 'italystrap' ); ?></option>
				<optgroup label="<?php esc_attr_e( 'Post type:', 'italystrap' ); ?>">
					<?php

					$post_types = get_post_types( array( 'public' => true, '_builtin' => true ), 'objects' );

					foreach ( $post_types as $post_type ) {
						?>
						<option value="<?php echo esc_attr( 'post_type-' . $post_type->name ); ?>" <?php selected( 'post_type-' . $post_type->name, $minor ); ?>><?php echo esc_html( $post_type->labels->singular_name ); ?></option>
						<?php
					}

					?>
				</optgroup>
				<optgroup label="<?php esc_attr_e( 'Static page:', 'italystrap' ); ?>">
					<?php

					echo str_replace( ' value="' . esc_attr( $minor ) . '"', ' value="' . esc_attr( $minor ) . '" selected="selected"', preg_replace( '/<\/?select[^>]*?>/i', '', wp_dropdown_pages( array( 'echo' => false ) ) ) );

					?>
				</optgroup>
				<?php
			break;
			case 'taxonomy':
				?>
				<option value=""><?php _e( 'All taxonomy pages', 'italystrap' ); ?></option>
				<?php
				$taxonomies = get_taxonomies(
					/**
					 * Filters args passed to get_taxonomies.
					 *
					 * @see https://developer.wordpress.org/reference/functions/get_taxonomies/
					 *
					 * @since 4.4.0
					 *
					 * @module widget-visibility
					 *
					 * @param array $args Widget Visibility taxonomy arguments.
					 */
					apply_filters( 'italystrap_widget_visibility_tax_args', array( '_builtin' => false ) ),
					'objects'
				);
				usort( $taxonomies, array( __CLASS__, 'strcasecmp_name' ) );

				$parts = explode( '_tax_', $minor );

				if ( 2 === count( $parts ) ) {
					$minor_id = self::maybe_get_split_term( $parts[1], $parts[0] );
					$minor = $parts[0] . '_tax_' . $minor_id;
				}

				foreach ( $taxonomies as $taxonomy ) {
					?>
					<optgroup label="<?php esc_attr_e( $taxonomy->labels->name . ':', 'italystrap' ); ?>">
						<option value="<?php echo esc_attr( $taxonomy->name ); ?>" <?php selected( $taxonomy->name, $minor ); ?>>
							<?php _e( 'All pages', 'italystrap' ); ?>
						</option>
					<?php

					$terms = get_terms( array( $taxonomy->name ), array( 'number' => 250, 'hide_empty' => false ) );
					foreach ( $terms as $term ) {
						?>
						<option value="<?php echo esc_attr( $taxonomy->name . '_tax_' . $term->term_id ); ?>" <?php selected( $taxonomy->name . '_tax_' . $term->term_id, $minor ); ?>><?php echo esc_html( $term->name ); ?></option>
						<?php
					}

					?>
				</optgroup>
				<?php
				}
			break;

			case 'post_type':
				?>
				<optgroup label="<?php echo esc_attr_x( 'Single post:', 'a heading for a list of custom post types', 'italystrap' ); ?>">
					<?php

					$post_types = get_post_types( array( 'public' => true, '_builtin' => false ), 'objects' );

					foreach ( $post_types as $post_type ) {
						?>
						<option
								value="<?php echo esc_attr( 'post_type-' . $post_type->name ); ?>"
								<?php selected( 'post_type-' . $post_type->name, $minor ); ?>>
							<?php echo esc_html( $post_type->labels->singular_name ); ?>
						</option>
						<?php
					}

					?>
				</optgroup>
				<optgroup label="<?php echo esc_attr_x( 'Archive page:', 'a heading for a list of custom post archive pages', 'italystrap' ); ?>">
					<?php

					$post_types = get_post_types( array( 'public' => true, '_builtin' => false ), 'objects' );

					foreach ( $post_types as $post_type ) {
						?>
						<option
								value="<?php echo esc_attr( 'post_type_archive-' . $post_type->name ); ?>"
								<?php selected( 'post_type_archive-' . $post_type->name, $minor ); ?>>
							<?php
								echo sprintf(
									/* translators: %s is a plural name of the custom post type, i.e. testimonials */
									_x(
										'Archive of %s',
										'a label in the list of custom post type archive pages',
										'italystrap'
									),
									$post_type->labels->name
								);
							?>
						</option>
						<?php
					}

					?>
				</optgroup>
				<?php
			break;
		}
	}

	/**
	 * This is the AJAX endpoint for the second level of conditions.
	 */
	public static function widget_conditions_options() {
		self::widget_conditions_options_echo( esc_attr( $_REQUEST['major'] ), isset( $_REQUEST['minor'] ) ? esc_attr( $_REQUEST['minor'] ) : '' );
		die;
	}

	/**
	 * Provide an option to include children of pages.
	 */
	public static function widget_conditions_has_children_echo( $major = '', $minor = '', $has_children = false ) {
		if ( ! $major || 'page' !== $major || ! $minor ) {
			return null;
		}

		if ( 'front' == $minor ) {
			$minor = get_option( 'page_on_front' );
		}

		if ( ! is_numeric( $minor ) ) {
			return null;
		}

		$page_children = get_pages( array( 'child_of' => (int) $minor ) );

		if ( $page_children ) {
		?>
			<label>
				<input type="checkbox" id="include_children" name="conditions[page_children][]" value="has" <?php checked( $has_children, true ); ?> />
				<?php echo esc_html_x( "Include children", 'Checkbox on Widget Visibility if choosen page has children.', 'italystrap' ); ?>
			</label>
		<?php
		}
	}

	/**
	 * This is the AJAX endpoint for the has_children input.
	 */
	public static function widget_conditions_has_children() {
		self::widget_conditions_has_children_echo( esc_attr( $_REQUEST['major'] ), isset( $_REQUEST['minor'] ) ? esc_attr( $_REQUEST['minor'] ) : '', isset( $_REQUEST['has_children'] ) ? esc_attr( $_REQUEST['has_children'] ) : false );
		die;
	}
}