<?php

/**
 * The admin-specific functionality of the plugin.
 *
 * @link    https://plugins360.com
 * @since   1.0.0
 *
 * @package All_In_One_Video_Gallery
 */

// Exit if accessed directly
if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * AIOVG_Admin class.
 *
 * @since 1.0.0
 */
class AIOVG_Admin {
	
	/**
	 * Insert missing plugin options.
	 *
	 * @since 1.5.2
	 */
	public function insert_missing_options() {		
		if ( AIOVG_PLUGIN_VERSION !== get_option( 'aiovg_version' ) ) {	
			$defaults = aiovg_get_default_settings();
			
			// Update the plugin version		
			update_option( 'aiovg_version', AIOVG_PLUGIN_VERSION );			

			// Insert the missing player settings
			$player_settings = get_option( 'aiovg_player_settings' );

			if ( ! is_array( $player_settings ) || empty( $player_settings ) ) {
				$player_settings = $defaults['aiovg_player_settings'];
				update_option( 'aiovg_player_settings', $player_settings );
			}

			$new_player_settings = array();
			
			if ( ! array_key_exists( 'theme', $player_settings ) ) {
				$new_player_settings['theme'] = $defaults['aiovg_player_settings']['theme'];				
			}

			if ( ! array_key_exists( 'muted', $player_settings ) ) {
				$new_player_settings['muted'] = $defaults['aiovg_player_settings']['muted'];				
			}
			
			if ( ! array_key_exists( 'cc_load_policy', $player_settings ) ) {
				$new_player_settings['cc_load_policy'] = $defaults['aiovg_player_settings']['cc_load_policy'];				
			}
			
			if ( ! array_key_exists( 'quality_levels', $player_settings ) ) {
				$new_player_settings['quality_levels'] = $defaults['aiovg_player_settings']['quality_levels'];				
			}
			
			if ( ! array_key_exists( 'use_native_controls', $player_settings ) ) {
				$new_player_settings['use_native_controls'] = $defaults['aiovg_player_settings']['use_native_controls'];				
			}

			if ( ! array_key_exists( 'force_js_initialization', $player_settings ) ) {
				$new_player_settings['player'] = 'videojs';
				$new_player_settings['force_js_initialization'] = ( isset( $player_settings['player'] ) && 'standard' == $player_settings['player'] ) ? 1 : 0;				
			}

			if ( ! array_key_exists( 'hide_youtube_logo', $player_settings ) ) {
				$new_player_settings['hide_youtube_logo'] = $defaults['aiovg_player_settings']['hide_youtube_logo'];
			}

			if ( count( $new_player_settings ) ) {
				update_option( 'aiovg_player_settings', array_merge( $player_settings, $new_player_settings ) );
			}
			
			// Insert the email capture settings
			$email_capture_settings = get_option( 'aiovg_email_capture_settings' );

			if ( ! is_array( $email_capture_settings ) || empty( $email_capture_settings ) ) {
				$email_capture_settings = $defaults['aiovg_email_capture_settings'];
				update_option( 'aiovg_email_capture_settings', $email_capture_settings );
			}

			// Insert the missing videos settings
			$videos_settings = get_option( 'aiovg_videos_settings' );

			if ( ! is_array( $videos_settings ) || empty( $videos_settings ) ) {
				$videos_settings = $defaults['aiovg_videos_settings'];
				update_option( 'aiovg_videos_settings', $videos_settings );
			}

			$image_settings = get_option( 'aiovg_image_settings' );

			if ( ! is_array( $image_settings ) || empty( $image_settings ) ) {
				$image_settings = array();
			}

			$new_videos_settings = array();

			if ( ! array_key_exists( 'template', $videos_settings ) ) {
				$new_videos_settings['template'] = $defaults['aiovg_videos_settings']['template'];				
			}

			if ( ! empty( $image_settings ) ) {
				$new_videos_settings['display'] = isset( $videos_settings['display'] ) ? $videos_settings['display'] : $defaults['aiovg_videos_settings']['display'];
				$new_videos_settings['display']['title'] = 'title';
			}

			if ( ! array_key_exists( 'thumbnail_style', $videos_settings ) ) {
				$new_videos_settings['thumbnail_style'] = $defaults['aiovg_videos_settings']['thumbnail_style'];
			}			

			if ( count( $new_videos_settings ) ) {
				update_option( 'aiovg_videos_settings', array_merge( $videos_settings, $new_videos_settings ) );
			}

			// Insert the missing categories settings
			$categories_settings = get_option( 'aiovg_categories_settings' );

			if ( ! is_array( $categories_settings ) || empty( $categories_settings ) ) {
				$categories_settings = $defaults['aiovg_categories_settings'];
				update_option( 'aiovg_categories_settings', $categories_settings );
			}

			$new_categories_settings = array();

			if ( ! array_key_exists( 'template', $categories_settings ) ) {
				$new_categories_settings['template'] = $defaults['aiovg_categories_settings']['template'];				
			}

			if ( ! array_key_exists( 'limit', $categories_settings ) ) {
				$new_categories_settings['limit'] = $defaults['aiovg_categories_settings']['limit'];				
			}

			if ( ! array_key_exists( 'hierarchical', $categories_settings ) ) {
				$new_categories_settings['hierarchical'] = $defaults['aiovg_categories_settings']['hierarchical'];				
			}

			if ( ! array_key_exists( 'breadcrumbs', $categories_settings ) ) {
				if ( array_key_exists( 'back_button', $categories_settings ) ) {
					$new_categories_settings['breadcrumbs'] = $categories_settings['back_button'];
				} else {
					$new_categories_settings['breadcrumbs'] = $defaults['aiovg_categories_settings']['breadcrumbs'];
				}				
			}

			if ( count( $new_categories_settings ) ) {
				update_option( 'aiovg_categories_settings', array_merge( $categories_settings, $new_categories_settings ) );
			}			

			// Insert the missing video settings
			$video_settings = get_option( 'aiovg_video_settings' );

			if ( ! is_array( $video_settings ) || empty( $video_settings ) ) {
				$video_settings = $defaults['aiovg_video_settings'];
				update_option( 'aiovg_video_settings', $video_settings );
			}

			$new_video_settings = array();

			if ( ! empty( $image_settings ) ) {
				$new_video_settings['display'] = isset( $video_settings['display'] ) ? $video_settings['display'] : $defaults['aiovg_video_settings']['display'];
				$new_video_settings['display']['share'] = 'share';
			}

			if ( empty( $video_settings['has_comments'] ) ) {
				$new_video_settings['has_comments'] = -1;				
			}

			if ( count( $new_video_settings ) ) {
				update_option( 'aiovg_video_settings', array_merge( $video_settings, $new_video_settings ) );
			}

			// Insert the images settings
			$images_settings = get_option( 'aiovg_images_settings' );

			if ( ! is_array( $images_settings ) || empty( $images_settings ) ) {
				$images_settings = array(
					'width' => $defaults['aiovg_images_settings']['width'],
					'ratio' => $defaults['aiovg_images_settings']['ratio'],
					'size'  => $defaults['aiovg_images_settings']['size']
				);

				if ( isset( $image_settings['ratio'] ) ) {
					$images_settings['ratio'] = $image_settings['ratio'];
				}

				if ( isset( $videos_settings['ratio'] ) ) {
					$images_settings['ratio'] = $videos_settings['ratio'];
				}

				update_option( 'aiovg_images_settings', $images_settings );
			}

			// Insert the featured images settings
			$featured_images_settings = get_option( 'aiovg_featured_images_settings' );

			if ( ! is_array( $featured_images_settings ) || empty( $featured_images_settings ) ) {
				$featured_images_settings = array(
					'enabled'                    => $defaults['aiovg_featured_images_settings']['enabled'],
					'download_external_images'   => $defaults['aiovg_featured_images_settings']['download_external_images'],
					'hide_on_single_video_pages' => $defaults['aiovg_featured_images_settings']['hide_on_single_video_pages']
				);

				update_option( 'aiovg_featured_images_settings', $featured_images_settings );
			}

			// Insert the likes / dislikes settings
			$likes_settings = get_option( 'aiovg_likes_settings' );

			if ( ! is_array( $likes_settings ) || empty( $likes_settings ) ) {
				$likes_settings = array(
					'like_button'            => $defaults['aiovg_likes_settings']['like_button'],
					'dislike_button'         => $defaults['aiovg_likes_settings']['dislike_button'],
					'login_required_to_vote' => $defaults['aiovg_likes_settings']['login_required_to_vote']
				);

				update_option( 'aiovg_likes_settings', $likes_settings );
			}

			// Insert the related videos settings
			$related_videos_settings = get_option( 'aiovg_related_videos_settings' );

			if ( ! is_array( $related_videos_settings ) || empty( $related_videos_settings ) ) {
				$related_videos_settings = array(
					'title'   => $defaults['aiovg_related_videos_settings']['title'],
					'columns' => isset( $videos_settings['columns'] ) ? $videos_settings['columns'] : $defaults['aiovg_videos_settings']['columns'],
					'limit'   => isset( $videos_settings['limit'] ) ? $videos_settings['limit'] : $defaults['aiovg_videos_settings']['limit'],
					'orderby' => isset( $videos_settings['orderby'] ) ? $videos_settings['orderby'] : $defaults['aiovg_videos_settings']['orderby'],
					'order'   => isset( $videos_settings['order'] ) ? $videos_settings['order'] : $defaults['aiovg_videos_settings']['order'],
					'display' => array(
						'pagination' => 'pagination'
					)
				);

				update_option( 'aiovg_related_videos_settings', $related_videos_settings );
			}

			$new_related_videos_settings = array();

			if ( ! array_key_exists( 'title', $related_videos_settings ) ) {
				$new_related_videos_settings['title'] = __( 'You may also like', 'all-in-one-video-gallery' );				
			}

			if ( count( $new_related_videos_settings ) ) {
				update_option( 'aiovg_related_videos_settings', array_merge( $related_videos_settings, $new_related_videos_settings ) );
			}
			
			// Insert the missing socialshare settings
			$socialshare_settings = get_option( 'aiovg_socialshare_settings' );

			if ( ! is_array( $socialshare_settings ) || empty( $socialshare_settings ) ) {
				$socialshare_settings = $defaults['aiovg_socialshare_settings'];
				update_option( 'aiovg_socialshare_settings', $socialshare_settings );
			}

			$new_socialshare_settings = array();

			if ( ! array_key_exists( 'open_graph_tags', $socialshare_settings ) ) {
				$new_socialshare_settings['open_graph_tags'] = $defaults['aiovg_socialshare_settings']['open_graph_tags'];				
			}

			if ( ! array_key_exists( 'twitter_username', $socialshare_settings ) ) {
				$new_socialshare_settings['twitter_username'] = $defaults['aiovg_socialshare_settings']['twitter_username'];				
			}

			if ( count( $new_socialshare_settings ) ) {
				update_option( 'aiovg_socialshare_settings', array_merge( $socialshare_settings, $new_socialshare_settings ) );
			}
			
			// Insert the missing general settings
			$general_settings = get_option( 'aiovg_general_settings' );

			if ( ! is_array( $general_settings ) || empty( $general_settings ) ) {
				$general_settings = $defaults['aiovg_general_settings'];
				update_option( 'aiovg_general_settings', $general_settings );
			}

			$new_general_settings = array();

			if ( ! array_key_exists( 'primary_color', $general_settings ) ) {
				if ( array_key_exists( 'theme_color', $player_settings ) && '#00b2ff' !== $player_settings['theme_color'] ) {
					$new_general_settings['primary_color'] = $player_settings['theme_color'];
				} else {
					$new_general_settings['primary_color'] = $defaults['aiovg_general_settings']['primary_color'];
				}
			}

			if ( ! array_key_exists( 'lazyloading', $general_settings ) ) {
				if ( array_key_exists( 'lazyloading', $player_settings ) ) {
					$new_general_settings['lazyloading'] = $player_settings['lazyloading'];
				} else {
					$new_general_settings['lazyloading'] = $defaults['aiovg_general_settings']['lazyloading'];
				}				
			}

			if ( ! array_key_exists( 'statistics', $general_settings ) ) {
				if ( array_key_exists( 'statistics', $player_settings ) ) {
					$new_general_settings['statistics'] = $player_settings['statistics'];
				} else {
					$new_general_settings['statistics'] = $defaults['aiovg_general_settings']['statistics'];
				}
			}

			if ( ! array_key_exists( 'maybe_flush_rewrite_rules', $general_settings ) ) {
				$new_general_settings['maybe_flush_rewrite_rules'] = $defaults['aiovg_general_settings']['maybe_flush_rewrite_rules'];
			}

			if ( ! array_key_exists( 'delete_media_files', $general_settings ) ) {
				$new_general_settings['delete_media_files'] = $defaults['aiovg_general_settings']['delete_media_files'];
			}

			if ( count( $new_general_settings ) ) {
				update_option( 'aiovg_general_settings', array_merge( $general_settings, $new_general_settings ) );
			}

			// Insert the api settings
			$api_settings = get_option( 'aiovg_api_settings' );

			if ( ! is_array( $api_settings ) || empty( $api_settings ) ) {
				$automations_settings = get_option( 'aiovg_automations_settings' );

				if ( ! is_array( $automations_settings ) || empty( $automations_settings ) ) {
					$automations_settings = array();
				}

				$defaults = array(
					'youtube_api_key'    => isset( $automations_settings['youtube_api_key'] ) ? $automations_settings['youtube_api_key'] : '',
					'vimeo_access_token' => isset( $general_settings['vimeo_access_token'] ) ? $general_settings['vimeo_access_token'] : ''
				);
					
				update_option( 'aiovg_api_settings', $defaults );			
			}
			
			// Insert the missing page settings
			$page_settings = get_option( 'aiovg_page_settings' );

			if ( ! is_array( $page_settings ) || empty( $page_settings ) ) {
				$page_settings = $defaults['aiovg_page_settings'];
				update_option( 'aiovg_page_settings', $page_settings );
			}

			if ( ! array_key_exists( 'tag', $page_settings ) ) {
				aiovg_insert_missing_pages();			
			}

			// Insert / Update the restrictions settings
			$restrictions_settings = get_option( 'aiovg_restrictions_settings' );

			if ( ! is_array( $restrictions_settings ) || empty( $restrictions_settings ) ) {
				$restrictions_settings = $defaults['aiovg_restrictions_settings'];
				update_option( 'aiovg_restrictions_settings', $restrictions_settings );
			}

			if ( ! array_key_exists( 'show_restricted_label', $restrictions_settings ) ) {
				update_option( 'aiovg_restrictions_settings', array_merge( $defaults['aiovg_restrictions_settings'], $restrictions_settings ) );
			}

			// Insert the trailer settings
			$trailer_settings = get_option( 'aiovg_trailer_settings' );

			if ( ! is_array( $trailer_settings ) || empty( $trailer_settings ) ) {
				$trailer_settings = $defaults['aiovg_trailer_settings'];
				update_option( 'aiovg_trailer_settings', $trailer_settings );
			}

			// Insert the privacy settings
			$privacy_settings = get_option( 'aiovg_privacy_settings' );

			if ( ! is_array( $privacy_settings ) || empty( $privacy_settings ) ) {
				$privacy_settings = $defaults['aiovg_privacy_settings'];
				update_option( 'aiovg_privacy_settings', $privacy_settings );
			}	
			
			// Insert the bunny stream settings
			$bunny_stream_settings = get_option( 'aiovg_bunny_stream_settings' );

			if ( ! is_array( $bunny_stream_settings ) || empty( $bunny_stream_settings ) ) {
				$bunny_stream_settings = $defaults['aiovg_bunny_stream_settings'];
				update_option( 'aiovg_bunny_stream_settings', $bunny_stream_settings );
			}

			// Remove the unfiltered_html capability from editors
			aiovg_remove_unfiltered_html_capability_from_editors();

			// Create the email leads table (safe to call on every upgrade — dbDelta is idempotent)
			aiovg_email_capture_create_table();
			
			// Delete the unwanted plugin options
			delete_option( 'aiovg_image_settings' );

			// Force rewrite rules flush on next load
        	delete_option( 'aiovg_rewrite_rules_flushed' );
		}
	}		

	/**
	 * Handle form actions.
	 *
	 * @since 1.6.5
	 */
	public function handle_form_actions() {
		if ( 'POST' == $_SERVER['REQUEST_METHOD'] && ! empty( $_POST['issues'] ) && isset( $_POST['aiovg_issues_nonce'] ) ) {
			// Verify that the nonce is valid
    		if ( wp_verify_nonce( $_POST['aiovg_issues_nonce'], 'aiovg_fix_ignore_issues' ) ) {
				$action_type  = isset( $_POST['action_type'] ) ? sanitize_text_field( wp_unslash( $_POST['action_type'] ) ) : '';
				$redirect_url = admin_url( 'admin.php?page=all-in-one-video-gallery&tab=issues' );

				// Fix Issues
				if ( 'apply_fix' === $action_type ) {
					$this->fix_issues();

					$redirect_url = add_query_arg(
						array(
							'section' => 'found',
							'success' => 1
						),
						$redirect_url
					);
				}

				// Ignore Issues
				if ( 'ignore' === $action_type ) {
					$this->ignore_issues();

					$redirect_url = add_query_arg( 
						array( 
							'section' => 'ignored',
							'success' => 1
						), 
						$redirect_url 
					);
				}

				// Redirect
				wp_redirect( $redirect_url );
        		exit;
			}
		}		
	}

	/**
	 * Add plugin's main menu and "Dashboard" menu.
	 *
	 * @since 1.6.5
	 */
	public function admin_menu() {	
		add_menu_page(
            __( 'All-in-One Video Gallery', 'all-in-one-video-gallery' ),
            __( 'Video Gallery', 'all-in-one-video-gallery' ),
            'manage_aiovg_options',
            'all-in-one-video-gallery',
            array( $this, 'display_dashboard_content' ),
            'dashicons-playlist-video',
            5
		);	
		
		add_submenu_page(
			'all-in-one-video-gallery',
			__( 'All-in-One Video Gallery - Dashboard', 'all-in-one-video-gallery' ),
			__( 'Dashboard', 'all-in-one-video-gallery' ),
			'manage_aiovg_options',
			'all-in-one-video-gallery',
			array( $this, 'display_dashboard_content' )
		);
	}

	/**
	 * Display dashboard page content.
	 *
	 * @since 1.6.5
	 */
	public function display_dashboard_content() {
		$tabs = array(			
			'shortcode-builder' => __( 'Shortcode Builder', 'all-in-one-video-gallery' ),
			'help'              => __( 'Help & Tutorials', 'all-in-one-video-gallery' )
		);
		
		$active_tab = isset( $_GET['tab'] ) ? sanitize_text_field( $_GET['tab'] ) : 'shortcode-builder';

		// Issues
		$issues = $this->check_issues();

		if ( count( $issues['found'] ) || 'issues' == $active_tab ) {
			$tabs['issues'] = __( 'Issues Found', 'all-in-one-video-gallery' );
		}

		// Validate active tab
		if ( ! in_array( $active_tab, array_keys( $tabs ) ) ) {
			$active_tab = 'shortcode-builder';
		}

		require_once AIOVG_PLUGIN_DIR . 'admin/partials/dashboard.php';	
	}

	/**
	 * Check for plugin issues.
	 *
	 * @since  1.6.5
	 * @return array $issues Array of issues found.
	 */
	public function check_issues() {
		$issues = array(
			'found'   => array(),
			'ignored' => array()
		);

		$_issues = get_option( 'aiovg_issues', $issues );
		$ignored = $_issues['ignored'];		

		// Check: pages_misconfigured
		$page_settings = aiovg_get_option( 'aiovg_page_settings' );
		$pages = aiovg_get_custom_pages_list();

		foreach ( $pages as $key => $page ) {
			$issue_found = 0;
			$post_id = isset( $page_settings[ $key ] ) ? $page_settings[ $key ] : 0;
			
			$pattern = '';
			if ( ! empty( $pages[ $key ]['content'] ) ) {
				$pattern = rtrim( $pages[ $key ]['content'], ']' );
			}

			if ( $post_id > 0 ) {
				$post = get_post( $post_id );

				if ( empty( $post ) || 'publish' != $post->post_status ) {
					$issue_found = 1;
				} elseif ( ! empty( $pattern ) && false === strpos( $post->post_content, $pattern ) ) {
					$issue_found = 1;				
				}
			} else {
				$issue_found = 1;
			}

			if ( $issue_found ) {
				if ( in_array( 'pages_misconfigured', $ignored ) ) {
					$issues['ignored'][] = 'pages_misconfigured';
				} else {
					$issues['found'][] = 'pages_misconfigured';
				}

				break;
			}			
		}		

		$issues = apply_filters( 'aiovg_check_issues', $issues );

		// Update		
		update_option( 'aiovg_issues', $issues );

		// Return
		return $issues;
	}	

	/**
	 * Apply fixes.
	 *
	 * @since 1.6.5
	 */
	public function fix_issues() {		
		$fixed = array();

		// Apply the fixes
		$_issues = aiovg_sanitize_array( $_POST['issues'] );

		foreach ( $_issues as $issue ) {
			switch ( $issue ) {
				case 'pages_misconfigured':	
					global $wpdb;

					$page_settings = aiovg_get_option( 'aiovg_page_settings' );
					$pages = aiovg_get_custom_pages_list();					

					foreach ( $pages as $key => $page ) {
						$issue_found = 0;
						$post_id = isset( $page_settings[ $key ] ) ? $page_settings[ $key ] : 0;			
			
						$pattern = '';
						if ( ! empty( $pages[ $key ]['content'] ) ) {
							$pattern = rtrim( $pages[ $key ]['content'], ']' );
						}

						if ( $post_id > 0 ) {
							$post = get_post( $post_id );
			
							if ( empty( $post ) || 'publish' != $post->post_status ) {
								$issue_found = 1;
							} elseif ( ! empty( $pattern ) && false === strpos( $post->post_content, $pattern ) ) {
								$issue_found = 1;		
							}
						} else {
							$issue_found = 1;
						}	
						
						if ( $issue_found ) {
							$insert_id = 0;

							if ( ! empty( $pattern ) ) {
								$query = $wpdb->prepare(
									"SELECT ID FROM {$wpdb->posts} WHERE `post_content` LIKE %s",
									'%' . $wpdb->esc_like( sanitize_text_field( $pattern ) ) . '%'
								);

								$ids = $wpdb->get_col( $query );
							} else {
								$ids = array();
							}

							if ( ! empty( $ids ) ) {
								$insert_id = $ids[0];

								// If the page is not published
								if ( 'publish' != get_post_status( $insert_id ) ) {
									wp_update_post(
										array(
											'ID'          => $insert_id,
											'post_status' => 'publish'
										)
									);
								}
							} else {
								$insert_id = wp_insert_post(
									array(
										'post_title'     => $pages[ $key ]['title'],
										'post_content'   => $pages[ $key ]['content'],
										'post_status'    => 'publish',
										'post_author'    => 1,
										'post_type'      => 'page',
										'comment_status' => 'closed'
									)
								);
							}

							$page_settings[ $key ] = $insert_id;
						}
					}

					update_option( 'aiovg_page_settings', $page_settings );

					$fixed[] = $issue;
					break;
			}
		}

		$fixed = apply_filters( 'aiovg_fix_issues', $fixed );

		// Update
		$issues = get_option( 'aiovg_issues', array(
			'found'   => array(),
			'ignored' => array()
		));

		foreach ( $issues['found'] as $index => $issue ) {
			if ( in_array( $issue, $fixed ) ) {
				unset( $issues['found'][ $index ] );
			}
		}

		foreach ( $issues['ignored'] as $index => $issue ) {
			if ( in_array( $issue, $fixed ) ) {
				unset( $issues['ignored'][ $index ] );
			}
		}

		update_option( 'aiovg_issues', $issues );
	}

	/**
	 * Ignore issues.
	 *
	 * @since 1.6.5
	 */
	public function ignore_issues() {
		$ignored = array();

		// Ignore the issues
		$_issues = aiovg_sanitize_array( $_POST['issues'] );		

		foreach ( $_issues as $issue ) {
			switch ( $issue ) {
				case 'pages_misconfigured':					
					$ignored[] = $issue;
					break;
			}
		}

		$ignored = apply_filters( 'aiovg_ignore_issues', $ignored );

		// Update
		$issues = get_option( 'aiovg_issues', array(
			'found'   => array(),
			'ignored' => array()
		));

		foreach ( $issues['found'] as $index => $issue ) {
			if ( in_array( $issue, $ignored ) ) {
				unset( $issues['found'][ $index ] );
			}
		}

		$issues['ignored'] = array_merge( $issues['ignored'], $ignored );

		update_option( 'aiovg_issues', $issues );
	}	

	/**
	 * Get details of the given issue.
	 *
	 * @since  1.6.5
	 * @param  string $issue Issue code.
	 * @return array         Issue details.
	 */
	public function get_issue_details( $issue ) {
		$issues_list = array(
			'pages_misconfigured' => array(
				'title'       => __( 'Pages Misconfigured', 'all-in-one-video-gallery' ),
				'description' => sprintf(
					__( 'During activation, our plugin adds few <a href="%s" target="_blank">pages</a> dynamically on your website that are required for the internal logic of the plugin. We found some of those pages are missing, misconfigured or having a wrong shortcode.', 'all-in-one-video-gallery' ),
					esc_url( admin_url( 'admin.php?page=aiovg_settings&tab=advanced&section=aiovg_page_settings' ) )
				)
			)
		);

		$issues_list = apply_filters( 'aiovg_get_issues_list', $issues_list );
	
		return isset( $issues_list[ $issue ] ) ? $issues_list[ $issue ] : '';
	}
	
	/**
	 * Register the stylesheets for the admin area.
	 *
	 * @since 1.0.0
	 * @param string $hook The current admin page.
	 */
	public function enqueue_styles( $hook ) {
		global $post_type;		

		wp_enqueue_style( 'wp-color-picker' );

		wp_enqueue_style( 
			AIOVG_PLUGIN_SLUG . '-magnific-popup', 
			AIOVG_PLUGIN_URL . 'vendor/magnific-popup/magnific-popup.min.css', 
			array(), 
			'1.2.0', 
			'all' 
		);

		wp_register_style( 
			AIOVG_PLUGIN_SLUG . '-driverjs', 
			AIOVG_PLUGIN_URL . 'vendor/driverjs/driver.css', 
			array(), 
			'1.3.4', 
			'all' 
		);

		if ( ! defined( 'AIOVG_DISABLE_TOUR' ) || ! AIOVG_DISABLE_TOUR ) {
			if ( current_user_can( 'manage_aiovg_options' ) ) {
				if ( in_array( $hook, array( 'post-new.php', 'post.php' ) ) && 'aiovg_videos' === $post_type ) {
					$current_user_id = get_current_user_id();
					$video_form_tour = get_user_meta( $current_user_id, 'aiovg_video_form_tour', true );
					
					if ( 'completed' != $video_form_tour ) {
						wp_enqueue_style( AIOVG_PLUGIN_SLUG . '-driverjs' );
					}			
				}
			}
		}
		
		if ( isset( $_GET['page'] ) && 'aiovg_import_export' === $_GET['page'] ) {
			wp_enqueue_style( 
				AIOVG_PLUGIN_SLUG . '-flatpickr', 
				AIOVG_PLUGIN_URL . 'vendor/flatpickr/flatpickr.min.css', 
				array(), 
				'4.6.13',
				'all'
			);
		}

		wp_enqueue_style( 
			AIOVG_PLUGIN_SLUG . '-admin', 
			AIOVG_PLUGIN_URL . 'admin/assets/css/admin.min.css', 
			array(), 
			AIOVG_PLUGIN_VERSION, 
			'all' 
		);
	}

	/**
	 * Register the JavaScript for the admin area.
	 *
	 * @since 1.0.0
	 * @param string $hook The current admin page.
	 */
	public function enqueue_scripts( $hook ) {
		global $post_type;

		$post_id = 0;

		$screen = get_current_screen();
		if ( $screen && 'aiovg_videos' === $screen->post_type && ! empty( $_GET['post'] ) ) {
			$post_id = absint( $_GET['post'] );
		}

		if ( 
			( isset( $_GET['page'] ) && in_array( $_GET['page'], array( 'all-in-one-video-gallery', 'aiovg_settings', 'aiovg_import_export' ) ) ) ||
			( in_array( $hook, array( 'post-new.php', 'post.php' ) ) && 'aiovg_videos' === $post_type ) || 
			( isset( $_GET['taxonomy'] ) && in_array( $_GET['taxonomy'], array( 'aiovg_categories' ) ) )
		) {
			wp_enqueue_media();
		}
		
        wp_enqueue_script( 'wp-color-picker' );

		wp_enqueue_script( 
			AIOVG_PLUGIN_SLUG . '-magnific-popup', 
			AIOVG_PLUGIN_URL . 'vendor/magnific-popup/magnific-popup.min.js', 
			array( 'jquery' ), 
			'1.2.0', 
			array( 'strategy' => 'defer' ) 
		);

		wp_register_script( 
			AIOVG_PLUGIN_SLUG . '-driverjs', 
			AIOVG_PLUGIN_URL . 'vendor/driverjs/driver.js.iife.js',
			array( 'jquery' ), 
			'1.3.4', 
			array( 'strategy' => 'defer' ) 
		);

		if ( ! defined( 'AIOVG_DISABLE_TOUR' ) || ! AIOVG_DISABLE_TOUR ) {
			if ( current_user_can( 'manage_aiovg_options' ) ) {
				if ( in_array( $hook, array( 'post-new.php', 'post.php' ) ) && 'aiovg_videos' === $post_type ) {
					$current_user_id = get_current_user_id();
					$video_form_tour = get_user_meta( $current_user_id, 'aiovg_video_form_tour', true );
					
					if ( 'completed' != $video_form_tour ) {
						wp_enqueue_script( AIOVG_PLUGIN_SLUG . '-driverjs' );
					}
				}
			}
		}
		
		if ( in_array( $hook, array( 'post-new.php', 'post.php' ) ) && 'aiovg_videos' === $post_type ) {
			if ( aiovg_has_bunny_stream_enabled() ) {
				wp_enqueue_script( 
					AIOVG_PLUGIN_SLUG . '-tus', 
					AIOVG_PLUGIN_URL . 'vendor/tus/tus.min.js',
					array( 'jquery' ), 
					'4.3.1', 
					array( 'strategy' => 'defer' ) 
				);
			}
		}

		wp_enqueue_script( 
			AIOVG_PLUGIN_SLUG . '-admin', 
			AIOVG_PLUGIN_URL . 'admin/assets/js/admin.min.js', 
			array( 'jquery' ), 
			AIOVG_PLUGIN_VERSION, 
			array( 'strategy' => 'defer' ) 
		);

		wp_localize_script( 
			AIOVG_PLUGIN_SLUG . '-admin', 
			'aiovg_admin', 
			array(
				'site_url'   => get_site_url(),
				'post_id'    => $post_id,
				'ajax_nonce' => wp_create_nonce( 'aiovg_ajax_nonce' ),
				'i18n'       => array(
					'copied'             => __( 'Copied!', 'all-in-one-video-gallery' ),
					'no_issues_selected' => __( 'Please select at least one issue.', 'all-in-one-video-gallery' ),
					'no_video_selected'  => __( 'No video selected. The last added video will be displayed.', 'all-in-one-video-gallery' ),
					'quality_exists'     => __( 'Sorry, there is already a video with this quality level.', 'all-in-one-video-gallery' ),
					'remove'             => __( 'Remove', 'all-in-one-video-gallery' ),
					'preparing_upload'   => __( 'Preparing upload', 'all-in-one-video-gallery' ),
					'cancel_upload'      => __( 'Cancel', 'all-in-one-video-gallery' ),
					'upload_status'      => __( 'Uploaded %d%', 'all-in-one-video-gallery' ),
					'upload_processing'  => __( '<strong>Processing:</strong> Your video is being processed. This usually happens quickly, but during busy times, it may take a little longer. You can safely continue and save the form — no need to wait. The video will automatically become playable once processing is complete.', 'all-in-one-video-gallery' ),
					'trailer'            => __( 'Trailer', 'all-in-one-video-gallery' )
				)				
			)
		);

		wp_register_script(
			AIOVG_PLUGIN_SLUG . '-import-export',
			AIOVG_PLUGIN_URL . 'admin/assets/js/import-export.min.js',
			array( AIOVG_PLUGIN_SLUG . '-admin' ),
			AIOVG_PLUGIN_VERSION,
			array( 'strategy' => 'defer' )
		);

		if ( isset( $_GET['page'] ) && 'aiovg_import_export' === $_GET['page'] ) {
			wp_enqueue_script(
				AIOVG_PLUGIN_SLUG . '-flatpickr',
				AIOVG_PLUGIN_URL . 'vendor/flatpickr/flatpickr.min.js',
				array( 'jquery' ),
				'4.6.13',
				array( 'strategy' => 'defer' )
			);

			wp_enqueue_script( AIOVG_PLUGIN_SLUG . '-import-export' );

			wp_localize_script(
				AIOVG_PLUGIN_SLUG . '-import-export',
				'aiovg_import_export',
				array(
					'i18n' => array(
						'fields_required'                     => __( 'Please fill in all required fields.', 'all-in-one-video-gallery' ),
						'preparing_import'                    => __( 'Preparing import.', 'all-in-one-video-gallery' ),
						'preparing_export'                    => __( 'Preparing export.', 'all-in-one-video-gallery' ),
						'fetching_csv_columns'                => __( 'Please wait while we fetch the column headers from your CSV file.', 'all-in-one-video-gallery' ),
						'csv_columns_loaded'                  => __( 'CSV columns loaded successfully. You can proceed with the import now.', 'all-in-one-video-gallery' ),
						'import_folder_failed_status_heading' => __( 'Sorry, some videos could not be imported. Please try again later.', 'all-in-one-video-gallery' ),
						'import_csv_error_status_heading'     => __( 'Some items could not be imported from the CSV. Please review the details below.', 'all-in-one-video-gallery' ),
						'export_zip_success_status_heading'   => __( 'Your export is ready. Download the ZIP files below.', 'all-in-one-video-gallery' ),
						'export_zip_failed_status_heading'    => __( 'Sorry, the following videos could not be exported because their file size exceeds the maximum allowed ZIP size.', 'all-in-one-video-gallery' ),
						'export_zip_empty_status'             => sprintf(
							__( 'Your export is complete. %s video records processed, and %s skipped. However, no ZIP file was created because no files were found.', 'all-in-one-video-gallery' ),
							'%%exported%%',
							'%%skipped%%'
						),
						'request_failed'                      => __( 'Something went wrong. Please check your server or try again.', 'all-in-one-video-gallery' )
					)
				)
			);
		}

		// Enqueue import-export.js on video pages when email capture is globally enabled
		if ( current_user_can( 'manage_aiovg_options' ) ) {
			$email_capture_settings = aiovg_get_option( 'aiovg_email_capture_settings' );

			if ( ! empty( $email_capture_settings['enable_email_capture'] ) ) {
				$is_videos_list = ( 'edit.php' === $hook && isset( $_GET['post_type'] ) && 'aiovg_videos' === $_GET['post_type'] );
				$is_video_edit  = ( in_array( $hook, array( 'post-new.php', 'post.php' ) ) && 'aiovg_videos' === $post_type );

				if ( $is_videos_list || $is_video_edit ) {
					wp_enqueue_script( AIOVG_PLUGIN_SLUG . '-import-export' );
				}
			}
		}
	}

	/**
	 * Add a post display state for special AIOVG pages in the page list table.
	 *
	 * @since 2.5.8
	 * @param array   $post_states An array of post display states.
	 * @param WP_Post $post        The current post object.
	 */
	public function add_display_post_states( $post_states, $post ) {
		$page_settings = aiovg_get_option( 'aiovg_page_settings' );
		
		if ( isset( $page_settings['category'] ) && $page_settings['category'] == $post->ID ) {
			$post_states['aiovg_page_for_category'] = __( 'Video Category Page', 'all-in-one-video-gallery' );
		}

		if ( isset( $page_settings['tag'] ) && $page_settings['tag'] == $post->ID ) {
			$post_states['aiovg_page_for_tag'] = __( 'Video Tag Page', 'all-in-one-video-gallery' );
		}
		
		if ( isset( $page_settings['search'] ) && $page_settings['search'] == $post->ID ) {
			$post_states['aiovg_page_for_search'] = __( 'Search Results Page', 'all-in-one-video-gallery' );
		}
		
		if ( isset( $page_settings['user_videos'] ) && $page_settings['user_videos'] == $post->ID ) {
			$post_states['aiovg_page_for_user_videos'] = __( 'User Videos Page', 'all-in-one-video-gallery' );
		}
		
		if ( isset( $page_settings['player'] ) && $page_settings['player'] == $post->ID ) {
			$post_states['aiovg_page_for_player'] = __( 'Player Page', 'all-in-one-video-gallery' );
		}
		
		if ( isset( $page_settings['user_dashboard'] ) && $page_settings['user_dashboard'] == $post->ID ) {
			$post_states['aiovg_page_for_user_dashboard'] = __( 'User Dashboard Page', 'all-in-one-video-gallery' );
		}
		
		if ( isset( $page_settings['video_form'] ) && $page_settings['video_form'] == $post->ID ) {
			$post_states['aiovg_page_for_video_form'] = __( 'Video Form Page', 'all-in-one-video-gallery' );
		}

		if ( isset( $page_settings['playlist'] ) && $page_settings['playlist'] == $post->ID ) {
			$post_states['aiovg_page_for_playlist'] = __( 'My Playlists Page', 'all-in-one-video-gallery' );
		}

		return $post_states;
	}

	/**
	 * Add a settings link on the plugin listing page.
	 *
	 * @since  1.0.0
	 * @param  array  $links An array of plugin action links.
	 * @return string $links Array of filtered plugin action links.
	 */
	public function plugin_action_links( $links ) {
		$settings_link = sprintf( 
			'<a href="%s">%s</a>', 
			esc_url( admin_url( 'admin.php?page=aiovg_settings' ) ), 
			__( 'Settings', 'all-in-one-video-gallery' ) 
		);

        array_unshift( $links, $settings_link );
		
    	return $links;
	}

	/**
	 * Extend MIME type recognition for media and streaming files.
	 *
	 * Adds support for WebVTT (.vtt) and SRT (.srt) subtitle uploads,
	 * and registers MIME types for HLS (.m3u8) and MPEG-DASH (.mpd)
	 * playlist files to ensure proper file type validation within WordPress.
	 * The HLS and DASH file types are not permitted for upload, but are
	 * recognized to avoid MIME type mismatches during playback or external
	 * media reference checks.
	 *
	 * @since  3.0.0
	 * @param  array $mimes Array of allowed mime types.
	 * @return array        Filtered mime types array.
	 */
	public function add_mime_types( $mimes ) {
		$mimes['vtt']  = 'text/vtt';	
		$mimes['srt']  = 'application/x-subrip';		
		$mimes['m3u8'] = 'application/x-mpegurl';
		$mimes['mpd']  = 'application/dash+xml';

		return $mimes;		
	}

	/**
	 * Ensure WordPress properly recognizes .vtt and .srt files.
	 *
	 * @since  1.5.7
	 * @param  array  $types    File data array containing 'ext', 'type', and 'proper_filename' keys.
	 * @param  string $file     Full path to the file.
	 * @param  string $filename The name of the file (may differ from $file due to $filename being in a tmp directory).
	 * @param  array  $mimes    Key is the file extension with value as the mime type.
	 * @return array  $types    Filtered file data array.
	 */
	public function add_filetype_and_ext( $types, $file, $filename, $mimes ) {
		$type = wp_check_filetype( $filename, $mimes );

		if ( 'vtt' === $type['ext'] ) {
			$types['ext']  = 'vtt';
			$types['type'] = 'text/vtt';
		}

		if ( 'srt' === $type['ext'] ) {
			$types['ext'] = 'srt';
			
			// Prioritize standard MIME but fall back safely
			if ( in_array( $type['type'], array( 'application/x-subrip', 'text/srt', 'text/plain' ) ) ) {
				$types['type'] = $type['type']; // Use whichever the server assigns
			} else {
				$types['type'] = 'application/x-subrip'; // Safe default
			}
		}
	
		return $types;
	}

	/**
	 * Validate uploaded WebVTT (.vtt) and SubRip (.srt) subtitle files.
	 *
	 * Uses real MIME detection via finfo (preferred and more secure).
	 * Falls back to structure-based validation if finfo is unavailable.
	 *
	 * @since  4.5.8
	 * @param  array $file Reference to a single element from the `$_FILES` array.
	 * @return array       Modified file array or error response.
	 */
	public function wp_handle_upload_prefilter( $file ) {
		$filename = strtolower( $file['name'] );

		// Only handle VTT/SRT uploads
		if ( substr( $filename, -4 ) !== '.vtt' && substr( $filename, -4 ) !== '.srt' ) {
			return $file;
		}

		// Real MIME detection
		if ( function_exists( 'finfo_open' ) ) {
			$finfo     = finfo_open( FILEINFO_MIME_TYPE );
			$real_mime = finfo_file( $finfo, $file['tmp_name'] );
			finfo_close( $finfo );

			$allowed_mimes = array(
				'text/vtt',
				'application/x-subrip',
				'text/srt',
				'text/plain'
			);

			if ( ! in_array( $real_mime, $allowed_mimes, true ) ) {
				$file['error'] = __( 'Upload blocked — file MIME type is not a valid subtitle format.', 'all-in-one-video-gallery' );
				return $file;
			}

			return $file; // MIME safe — no further checks needed
		}

		// Fallback — Subtitle structure validation
		if ( substr( $filename, -4 ) === '.vtt' ) {
			$handle = fopen( $file['tmp_name'], 'r' );
			$first_line = trim( fgets( $handle ) );
			fclose( $handle );

			if ( strpos( $first_line, 'WEBVTT' ) !== 0 ) {
				$file['error'] = __( 'Invalid WebVTT file — must start with "WEBVTT".', 'all-in-one-video-gallery' );
			}
		}

		// Fallback Validate SRT
		if ( substr( $filename, -4 ) === '.srt' ) {
			$handle = fopen( $file['tmp_name'], 'r' );
			$first_line  = trim( fgets( $handle ) );
			$second_line = trim( fgets( $handle ) );
			fclose( $handle );

			$valid_index = preg_match( '/^\d+$/', $first_line );
			$valid_time  = preg_match( '/^\d{2}:\d{2}:\d{2},\d{3} --> \d{2}:\d{2}:\d{2},\d{3}$/', $second_line );

			if ( ! $valid_index || ! $valid_time ) {
				$file['error'] = __( 'Invalid SRT file — does not follow standard SubRip formatting.', 'all-in-one-video-gallery' );
			}
		}

		return $file;
	}

	/**
     * Flags rewrite rules for flushing on the next request when relevant options change.
     *
     * @since 4.7.3
     * @param string $option Option name being updated.
     * @param mixed  $old    Previous option value.
     * @param mixed  $value  Updated option value.
     */
    public function force_rewrite_rules_on_settings_update( $option, $old, $value ) {
        if ( in_array( $option, array( 'aiovg_page_settings', 'aiovg_permalink_settings' ), true ) ) {
            // Force rewrite rules flush on next load
            delete_option( 'aiovg_rewrite_rules_flushed' );
        }
    }

	/**
     * Flags rewrite rules for flushing when an assigned AIOVG page
     * or its translation is updated.
     *
     * @since 4.7.3
     * @param int     $post_id Post ID.
     * @param WP_Post $post    Post object.
     * @param bool    $update  Whether this is an existing post update.
     */
    public function force_rewrite_rules_on_page_update( $post_id, $post, $update ) {
        // Avoid autosaves & revisions
        if ( wp_is_post_autosave( $post_id ) || wp_is_post_revision( $post_id ) ) {
            return;
        }

        // Only act on updates (not new pages)
        if ( ! $update ) {
            return;
        }

        // Defensive capability check
        if ( ! current_user_can( 'edit_page', $post_id ) ) {
            return;
        }

        $page_settings      = aiovg_get_option( 'aiovg_page_settings' );
		$permalink_settings = aiovg_get_option( 'aiovg_permalink_settings' );

		if ( ! empty( $permalink_settings['video_archive_page'] ) ) {
			$page_settings['video_archive_page'] = (int) $permalink_settings['video_archive_page'];
		}

        if ( empty( $page_settings ) ) {
            return;
        }

        // Normalize assigned page IDs
        $assigned_pages = array_map( 'intval', $page_settings );

        // Direct Match (Fast Path)
        if ( in_array( (int) $post_id, $assigned_pages, true ) ) {
            delete_option( 'aiovg_rewrite_rules_flushed' );
            return;
        }

        // Check for Polylang translations
        if ( function_exists( 'pll_get_post_translations' ) ) {
            foreach ( $assigned_pages as $assigned_id ) {
                $translations = pll_get_post_translations( $assigned_id );

                if ( empty( $translations ) ) {
                    continue;
                }

                if ( in_array( (int) $post_id, array_map( 'intval', $translations ), true ) ) {
                    delete_option( 'aiovg_rewrite_rules_flushed' );
                    return;
                }
            }
        }

        // Check for WPML translations (TRID-based)
        if ( defined( 'ICL_SITEPRESS_VERSION' ) ) {
            $element_type = apply_filters( 'wpml_element_type', 'page' );
            $current_trid = apply_filters( 'wpml_element_trid', null, $post_id, $element_type );

            if ( ! empty( $current_trid ) ) {
                foreach ( $assigned_pages as $assigned_id ) {
                    $assigned_trid = apply_filters( 'wpml_element_trid', null, $assigned_id, $element_type );

                    if ( (int) $current_trid === (int) $assigned_trid ) {
                        delete_option( 'aiovg_rewrite_rules_flushed' );
                        return;
                    }
                }
            }
        }
    }

	/**
	 * Store user meta.
	 *
	 * @since 4.0.1
	 */
	public function ajax_callback_store_user_meta() {	
		check_ajax_referer( 'aiovg_ajax_nonce', 'security' );

		$user_id = get_current_user_id();
		if ( ! $user_id ) {
			wp_die();
		}

		if ( ! current_user_can( 'manage_aiovg_options' ) ) {
			wp_die();
		}

		$key = isset( $_POST['key'] ) ? sanitize_key( $_POST['key'] ) : '';
		$allowed_keys = array( 'aiovg_video_form_tour',	'aiovg_automation_form_tour' );

		if ( ! in_array( $key, $allowed_keys ) ) {
			wp_die();
		}

		$value = isset( $_POST['value'] ) ? trim( $_POST['value'] ) : 0;
		if ( 'completed' !== $value ) {
			$value = (int) $value;
		}

		update_user_meta( $user_id, $key, $value );
		wp_die();
	}

}