<?php
/**
 * LearnDash Settings Page Add-ons.
 *
 * @since 2.5.4
 *
 * @package LearnDash
 * @subpackage Settings
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ( class_exists( 'LearnDash_Settings_Page' ) ) && ( ! class_exists( 'LearnDash_Settings_Page_Addons' ) ) ) {
	/**
	 * Class to create the settings page.
	 */
	class LearnDash_Settings_Page_Addons extends LearnDash_Settings_Page {

		/**
		 * Public constructor for class
		 */
		public function __construct() {
			$this->parent_menu_page_url  = 'admin.php?page=learndash_lms_addons';
			$this->menu_page_capability  = LEARNDASH_ADMIN_CAPABILITY_CHECK;
			$this->settings_page_id      = 'learndash_lms_addons';
			$this->settings_page_title   = esc_html__( 'LearnDash Add-ons', 'learndash' );
			$this->settings_tab_title    = esc_html__( 'Add-ons', 'learndash' );
			$this->settings_tab_priority = 0;

			// Override action with custom plugins function for add-ons.
			add_action( 'install_plugins_pre_plugin-information', array( $this, 'shows_addon_plugin_information' ) );
			add_filter( 'learndash_submenu_last', array( $this, 'submenu_item' ), 200 );

			add_filter( 'learndash_admin_tab_sets', array( $this, 'learndash_admin_tab_sets' ), 10, 3 );
			add_filter( 'learndash_header_data', array( $this, 'admin_header' ), 40, 3 );

			parent::__construct();
		}

		/**
		 * Control visibility of submenu items based on lisence status
		 *
		 * @since 2.5.5
		 *
		 * @param array $submenu Submenu item to check.
		 * @return array $submenu
		 */
		public function submenu_item( $submenu ) {
			if ( ! isset( $submenu[ $this->settings_page_id ] ) ) {
				if ( is_learndash_license_valid() ) {
					$submenu[ $this->settings_page_id ] = array(
						'name' => $this->settings_tab_title,
						'cap'  => $this->menu_page_capability,
						'link' => $this->parent_menu_page_url,
					);
				}
			}

			return $submenu;
		}

		/**
		 * Filter the admin header data. We don't want to show the header panel on the Overview page.
		 *
		 * @since 3.0
		 * @param array $header_data Array of header data used by the Header Panel React app.
		 * @param string $menu_key The menu key being displayed.
		 * @param array $menu_items Array of menu/tab items.
		 *
		 * @return array $header_data.
		 */
		public function admin_header( $header_data = array(), $menu_key = '', $menu_items = array() ) {
			// Clear out $header_data if we are showing our page.
			if ( $menu_key === $this->parent_menu_page_url ) {
				$header_data = array();
			}

			return $header_data;
		}

		/**
		 * Filter for page title wrapper.
		 *
		 * @since 2.5.5
		 */
		public function get_admin_page_title() {

			/** This filter is documented in includes/settings/class-ld-settings-pages.php */
			return apply_filters( 'learndash_admin_page_title', '<h1>' . $this->settings_page_title . '</h1>' );
		}

		/**
		 * Action function called when Add-ons page is loaded.
		 *
		 * @since 2.5.5
		 */
		public function load_settings_page() {

			$license_status = get_option( 'nss_plugin_remote_license_sfwd_lms' );
			if ( isset( $license_status['value'] ) ) {
				$license_status = $license_status['value'];
				if ( ! empty( $license_status ) && ( 'false' !== $license_status ) && ( 'not_found' !== $license_status ) ) {
					require_once LEARNDASH_LMS_PLUGIN_DIR . 'includes/admin/class-learndash-admin-addons-list-table.php';

					wp_enqueue_style( 'plugin-install' );
					wp_enqueue_script( 'plugin-install' );
					wp_enqueue_script( 'updates' );

					add_thickbox();

					return;
				}
			}

			$overview_url = add_query_arg( 'page', 'learndash_lms_overview', admin_url( 'admin.php' ) );
			learndash_safe_redirect( $overview_url );
		}

		/**
		 * Hide the tab menu items if on add-one page.
		 *
		 * @since 2.5.5
		 *
		 * @param array  $tab_set Tab Set.
		 * @param string $tab_key Tab Key.
		 * @param string $current_page_id ID of shown page.
		 *
		 * @return array $tab_set
		 */
		public function learndash_admin_tab_sets( $tab_set = array(), $tab_key = '', $current_page_id = '' ) {
			if ( ( ! empty( $tab_set ) ) && ( ! empty( $tab_key ) ) && ( ! empty( $current_page_id ) ) ) {
				if ( 'admin_page_learndash_lms_addons' === $current_page_id ) {
					?>
					<style> h1.nav-tab-wrapper { display: none; }</style>
					<?php
				}
			}
			return $tab_set;
		}

		/**
		 * Custom display function for page content.
		 *
		 * @since 2.5.5
		 */
		public function show_settings_page() {

			?>
			<div class="wrap learndash-settings-page-wrap">

				<?php settings_errors(); ?>

				<?php
				/** This filter is documented in includes/settings/class-ld-settings-pages.php */
				do_action( 'learndash_settings_page_before_title', $this->settings_screen_id );
				?>
				<?php echo $this->get_admin_page_title(); ?>
				<?php
				/** This filter is documented in includes/settings/class-ld-settings-pages.php */
				do_action( 'learndash_settings_page_after_title', $this->settings_screen_id );
				?>

				<?php
				/** This filter is documented in includes/settings/class-ld-settings-pages.php */
				do_action( 'learndash_settings_page_before_form', $this->settings_screen_id );
				?>
				<div id="plugin-filter-xxx">
				<?php echo $this->get_admin_page_form( true ); ?>
				<?php
				/** This filter is documented in includes/settings/class-ld-settings-pages.php */
				do_action( 'learndash_settings_page_inside_form_top', $this->settings_screen_id );
				?>
					<?php
						$wp_list_table = new Learndash_Admin_Addons_List_Table();
						$wp_list_table->prepare_items();

						$wp_list_table->views();
						$wp_list_table->display();
					?>
				<?php
				/** This filter is documented in includes/settings/class-ld-settings-pages.php */
				do_action( 'learndash_settings_page_inside_form_bottom', $this->settings_screen_id );
				?>
				<?php echo $this->get_admin_page_form( false ); ?>
				</div>
				<?php
				/** This filter is documented in includes/settings/class-ld-settings-pages.php */
				do_action( 'learndash_settings_page_after_form', $this->settings_screen_id );
				?>
			</div>
			<?php
			/**
			 * The following is needed to trigger the wp-admin/js/updates.js logic in
			 * wp.updates.updatePlugin() where is checks for specific pagenow values
			 * but doesn't leave any option for externals.
			 */
			?>
			<script type="text/javascript">
				//pagenow = 'plugin-install';
			</script>
			<?php
		}

		/**
		 * Display plugin information in dialog box form.
		 *
		 * @since 2.5.5
		 *
		 * @global string $tab
		 */
		public function shows_addon_plugin_information() {
			if ( empty( $_REQUEST['plugin'] ) ) {
				return;
			}

			$addon_updater             = LearnDash_Addon_Updater::get_instance();
			$plugin_readme_information = $addon_updater->get_plugin_information( esc_attr( $_REQUEST['plugin'] ) );

			if ( empty( $plugin_readme_information ) ) {
				return;
			}

			$api = new StdClass();
			foreach ( $plugin_readme_information as $_k => $_s ) {
				$api->$_k = $_s;
			}

			$plugins_allowedtags = array(
				'a'          => array(
					'href'   => array(),
					'title'  => array(),
					'target' => array(),
				),
				'abbr'       => array(
					'title' => array(),
				),
				'acronym'    => array(
					'title' => array(),
				),
				'code'       => array(),
				'pre'        => array(),
				'em'         => array(),
				'strong'     => array(),
				'div'        => array(
					'class' => array(),
				),
				'span'       => array(
					'class' => array(),
				),
				'p'          => array(),
				'br'         => array(),
				'ul'         => array(),
				'ol'         => array(),
				'li'         => array(),
				'h1'         => array(),
				'h2'         => array(),
				'h3'         => array(),
				'h4'         => array(),
				'h5'         => array(),
				'h6'         => array(),
				'img'        => array(
					'src'   => array(),
					'class' => array(),
					'alt'   => array(),
				),
				'blockquote' => array(
					'cite' => true,
				),
			);

			$plugins_section_titles = array(
				'description'  => _x( 'Description', 'Plugin installer section title', 'learndash' ),
				'installation' => _x( 'Installation', 'Plugin installer section title', 'learndash' ),
				'faq'          => _x( 'FAQ', 'Plugin installer section title', 'learndash' ),
				'screenshots'  => _x( 'Screenshots', 'Plugin installer section title', 'learndash' ),
				'changelog'    => _x( 'Changelog', 'Plugin installer section title', 'learndash' ),
				'reviews'      => _x( 'Reviews', 'Plugin installer section title', 'learndash' ),
				'other_notes'  => _x( 'Other Notes', 'Plugin installer section title', 'learndash' ),
			);

			// Sanitize HTML.
			foreach ( (array) $api->sections as $section_name => $content ) {
				$api->sections[ $section_name ] = wp_kses( $content, $plugins_allowedtags );
			}

			foreach ( array( 'version', 'author', 'requires', 'tested', 'homepage', 'downloaded', 'slug' ) as $key ) {
				if ( isset( $api->$key ) ) {
					$api->$key = wp_kses( $api->$key, $plugins_allowedtags );
				}
			}

			$section = isset( $_REQUEST['section'] ) ? wp_unslash( $_REQUEST['section'] ) : 'description'; // Default to the Description tab, Do not translate, API returns English.
			if ( empty( $section ) || ! isset( $api->sections[ $section ] ) ) {
				$section_titles = array_keys( (array) $api->sections );
				$section        = reset( $section_titles );
			}

			if ( ( isset( $_GET['tab'] ) ) && ( ! empty( $_GET['tab'] ) ) ) {
				$tab = esc_attr( $_GET['tab'] );
			} else {
				$tab = 'plugin-information';
			}
			$_tab = $tab;

			$section = isset( $_REQUEST['section'] ) ? wp_unslash( $_REQUEST['section'] ) : 'description'; // Default to the Description tab, Do not translate, API returns English.
			if ( empty( $section ) || ! isset( $api->sections[ $section ] ) ) {
				$section_titles = array_keys( (array) $api->sections );
				$section        = reset( $section_titles );
			}

			iframe_header( __( 'Plugin Installation', 'learndash' ) );

			$_with_banner = '';

			if ( ! empty( $api->banners ) && ( ! empty( $api->banners['low'] ) || ! empty( $api->banners['high'] ) ) ) {
				$_with_banner = 'with-banner';
				$low          = empty( $api->banners['low'] ) ? $api->banners['high'] : $api->banners['low'];
				$high         = empty( $api->banners['high'] ) ? $api->banners['low'] : $api->banners['high'];
				?>
				<style type="text/css">
					#plugin-information-title.with-banner {
						background-image: url( <?php echo esc_url( $low ); ?> );
					}
					@media only screen and ( -webkit-min-device-pixel-ratio: 1.5 ) {
						#plugin-information-title.with-banner {
							background-image: url( <?php echo esc_url( $high ); ?> );
						}
					}
				</style>
				<?php
			}

			echo '<div id="plugin-information-scrollable">';
			echo "<div id='{$_tab}-title' class='{$_with_banner}'><div class='vignette'></div><h2>{$api->name}</h2></div>";
			echo "<div id='{$_tab}-tabs' class='{$_with_banner}'>\n";

			foreach ( (array) $api->sections as $section_name => $content ) {
				if ( 'reviews' === $section_name && ( empty( $api->ratings ) || 0 === array_sum( (array) $api->ratings ) ) ) {
					continue;
				}

				if ( isset( $plugins_section_titles[ $section_name ] ) ) {
					$title = $plugins_section_titles[ $section_name ];
				} else {
					$title = ucwords( str_replace( '_', ' ', $section_name ) );
				}

				$class       = ( $section_name === $section ) ? ' class="current"' : '';
				$href        = add_query_arg(
					array(
						'tab'     => $tab,
						'section' => $section_name,
					)
				);
				$href        = esc_url( $href );
				$san_section = esc_attr( $section_name );
				echo "\t<a name='$san_section' href='$href' $class>$title</a>\n";
			}

			echo "</div>\n";

			?>
		<div id="<?php echo $_tab; ?>-content" class='<?php echo $_with_banner; ?>'>
			<div class="fyi">
				<ul>
					<?php if ( ! empty( $api->version ) ) { ?>
						<li><strong><?php _e( 'Version:', 'learndash' ); ?></strong> <?php echo $api->version; ?></li>
					<?php } if ( ! empty( $api->author ) ) { ?>
						<li><strong><?php _e( 'Author:', 'learndash' ); ?></strong> <?php echo links_add_target( $api->author, '_blank' ); ?></li>
					<?php } if ( ! empty( $api->last_updated ) ) { ?>
						<li><strong><?php _e( 'Last Updated:', 'learndash' ); ?></strong>
							<?php
							/* translators: %s: Time since the last update */
							printf( __( '%s ago', 'default' ), human_time_diff( strtotime( $api->last_updated ) ) );
							?>
						</li>
					<?php } if ( ! empty( $api->requires ) ) { ?>
						<li>
							<strong><?php _e( 'Requires WordPress Version:', 'default' ); ?></strong>
							<?php
							/* translators: %s: WordPress version */
							printf( __( '%s or higher', 'default' ), $api->requires );
							?>
						</li>
					<?php } if ( ! empty( $api->tested ) ) { ?>
						<li><strong><?php _e( 'Compatible up to:', 'default' ); ?></strong> <?php echo $api->tested; ?></li>
					<?php } if ( isset( $api->active_installs ) ) { ?>
						<li><strong><?php _e( 'Active Installations:', 'default' ); ?></strong>
												<?php
												if ( $api->active_installs >= 1000000 ) {
													_ex( '1+ Million', 'Active plugin installations', 'default' );
												} elseif ( 0 == $api->active_installs ) {
													_ex( 'Less Than 10', 'Active plugin installations', 'default' );
												} else {
													echo number_format_i18n( $api->active_installs ) . '+';
												}
							?>
							</li>
					<?php } if ( ! empty( $api->slug ) && empty( $api->external ) ) { ?>
						<li><a target="_blank" href="<?php echo esc_url( __( 'https://wordpress.org/plugins/', 'default' ) ) . $api->slug; ?>/"><?php _e( 'WordPress.org Plugin Page &#187;', 'default' ); ?></a></li>
					<?php } if ( ! empty( $api->homepage ) ) { ?>
						<li><a target="_blank" href="<?php echo esc_url( $api->homepage ); ?>"><?php _e( 'Plugin Homepage &#187;', 'default' ); ?></a></li>
					<?php } if ( ! empty( $api->donate_link ) && empty( $api->contributors ) ) { ?>
						<li><a target="_blank" href="<?php echo esc_url( $api->donate_link ); ?>"><?php _e( 'Donate to this plugin &#187;', 'default' ); ?></a></li>
					<?php } ?>
				</ul>
				<?php if ( ! empty( $api->rating ) ) { ?>
					<h3><?php _e( 'Average Rating', 'default' ); ?></h3>
					<?php
					wp_star_rating(
						array(
							'rating' => $api->rating,
							'type'   => 'percent',
							'number' => $api->num_ratings,
						)
					);
?>
					<p aria-hidden="true" class="fyi-description"><?php printf( _n( '(based on %s rating)', '(based on %s ratings)', $api->num_ratings, 'default' ), number_format_i18n( $api->num_ratings ) ); ?></p>
				<?php
}

if ( ! empty( $api->ratings ) && array_sum( (array) $api->ratings ) > 0 ) {
				?>
					<h3><?php _e( 'Reviews', 'default' ); ?></h3>
					<p class="fyi-description"><?php _e( 'Read all reviews on WordPress.org or write your own!', 'default' ); ?></p>
					<?php
					foreach ( $api->ratings as $key => $ratecount ) {
						// Avoid div-by-zero.
						$_rating = $api->num_ratings ? ( $ratecount / $api->num_ratings ) : 0;
						/* translators: 1: number of stars (used to determine singular/plural), 2: number of reviews */
						$aria_label = esc_attr(
							sprintf(
								_n( 'Reviews with %1$d star: %2$s. Opens in a new window.', 'Reviews with %1$d stars: %2$s. Opens in a new window.', $key ),
								$key,
								number_format_i18n( $ratecount ), 'default'
							)
						);
						?>
						<div class="counter-container">
								<span class="counter-label"><a href="https://wordpress.org/support/view/plugin-reviews/<?php echo $api->slug; ?>?filter=<?php echo $key; ?>"
															   target="_blank" aria-label="<?php echo $aria_label; ?>"><?php printf( _n( '%d star', '%d stars', $key, 'default' ), $key ); ?></a></span>
								<span class="counter-back">
									<span class="counter-bar" style="width: <?php echo 92 * $_rating; ?>px;"></span>
								</span>
							<span class="counter-count" aria-hidden="true"><?php echo number_format_i18n( $ratecount ); ?></span>
						</div>
						<?php
					}
}
if ( ! empty( $api->contributors ) ) {
				?>
					<h3><?php _e( 'Contributors', 'default' ); ?></h3>
					<ul class="contributors">
						<?php
						foreach ( (array) $api->contributors as $contrib_username => $contrib_profile ) {
							if ( empty( $contrib_username ) && empty( $contrib_profile ) ) {
								continue;
							}
							if ( empty( $contrib_username ) ) {
								$contrib_username = preg_replace( '/^.+\/(.+)\/?$/', '\1', $contrib_profile );
							}
							$contrib_username = sanitize_user( $contrib_username );
							if ( empty( $contrib_profile ) ) {
								echo "<li><img src='https://wordpress.org/grav-redirect.php?user={$contrib_username}&amp;s=36' width='18' height='18' alt='' />{$contrib_username}</li>";
							} else {
								echo "<li><a href='{$contrib_profile}' target='_blank'><img src='https://wordpress.org/grav-redirect.php?user={$contrib_username}&amp;s=36' width='18' height='18' alt='' />{$contrib_username}</a></li>";
							}
						}
						?>
					</ul>
					<?php if ( ! empty( $api->donate_link ) ) { ?>
						<a target="_blank" href="<?php echo esc_url( $api->donate_link ); ?>"><?php _e( 'Donate to this plugin &#187;', 'default' ); ?></a>
					<?php } ?>
				<?php } ?>
			</div>
			<div id="section-holder">
			<?php
			$wp_version = get_bloginfo( 'version' );

			if ( ! empty( $api->tested ) && version_compare( substr( $wp_version, 0, strlen( $api->tested ) ), $api->tested, '>' ) ) {
				echo '<div class="notice notice-warning notice-alt"><p>' . __( '<strong>Warning:</strong> This plugin has <strong>not been tested</strong> with your current version of WordPress.', 'default' ) . '</p></div>';
			} elseif ( ! empty( $api->requires ) && version_compare( substr( $wp_version, 0, strlen( $api->requires ) ), $api->requires, '<' ) ) {
				echo '<div class="notice notice-warning notice-alt"><p>' . __( '<strong>Warning:</strong> This plugin has <strong>not been marked as compatible</strong> with your version of WordPress.', 'default' ) . '</p></div>';
			}

			foreach ( (array) $api->sections as $section_name => $content ) {
				$content = links_add_base_url( $content, 'https://wordpress.org/plugins/' . $api->slug . '/' );
				$content = links_add_target( $content, '_blank' );

				$san_section = esc_attr( $section_name );

				$display = ( $section_name === $section ) ? 'block' : 'none';

				echo "\t<div id='section-{$san_section}' class='section' style='display: {$display};'>\n";
				echo $content;
				echo "\t</div>\n";
			}
			echo "</div>\n";
			echo "</div>\n";
			echo "</div>\n"; // #plugin-information-scrollable
			echo "<div id='$tab-footer'>\n";
			if ( empty( $api->download_link ) && ( current_user_can( 'install_plugins' ) || current_user_can( 'update_plugins' ) ) ) {
				if ( isset( $api->plugin_status ) ) {
					$status = $api->plugin_status;
					switch ( $status['status'] ) {
						case 'install':
							if ( $status['url'] ) {
								echo '<a data-slug="' . esc_attr( $api->slug ) . '" id="plugin_install_from_iframe" class="button button-primary right" href="' . $status['url'] . '" target="_parent">' . __( 'Install Now', 'default' ) . '</a>';
							}
							break;
						case 'update_available':
							if ( $status['url'] ) {
								echo '<a data-slug="' . esc_attr( $api->slug ) . '" data-plugin="' . esc_attr( $status['file'] ) . '" id="plugin_update_from_iframe" class="button button-primary right" href="' . $status['url'] . '" target="_parent">' . __( 'Install Update Now', 'default' ) . '</a>';
							}
							break;
						case 'newer_installed':
							/* translators: %s: Plugin version */
							echo '<a class="button button-primary right disabled">' . sprintf( __( 'Newer Version (%s) Installed', 'default' ), $status['version'] ) . '</a>';
							break;
						case 'latest_installed':
							echo '<a class="button button-primary right disabled">' . __( 'Latest Version Installed', 'default' ) . '</a>';
							break;
					}
				}
			}
			echo "</div>\n";

			iframe_footer();
			exit;
		}
	}
}
add_action(
	'learndash_settings_pages_init',
	function() {
		LearnDash_Settings_Page_Addons::add_page_instance();
	}
);
