<?php
defined( 'ABSPATH' ) || exit;

require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-video-meta.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-video-poster-link.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-admin-menu.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-categories-menu.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-date-human-diff.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-video-stat.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-theme-image.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-trial-bar.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-video-query-loop.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-playlist.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-playlist-list.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-edit-link.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-post-content.php';
require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-block-custom-main-menu.php';
require_once VPHQ_ROOT . '/class.videopress-hq-playlist.php';
require_once VPHQ_ROOT . '/class.videopress-hq-custom-admin-page.php';
require_once VPHQ_ROOT . '/class.videopress-hq-post-status.php';

class VideoPressHQ {
	public const POST_TYPE_VIDEO = 'vp_video';

	public const THEME_VERSION              = VPHQ_VERSION;
	public const THEME_VERSION_OPTION       = 'videopress_hq_theme_version';
	public const GLOBAL_FUNCTIONS_SCRIPT_ID = 'videopress-hq-frontend-functions-js';
	public const GLOBAL_JS_SCRIPT_ID        = 'videopress-hq-frontend-js';

	public const ACTION_UPDATE_THEME_VERSION = 'videopress_hq_update_theme_version';

	public function __construct() {
		$this->hook_wordpress_actions();
		VideoPressHQCaps::init();
		VideoPressHQPostStatus::init();
	}

	private function hook_wordpress_actions() {
		add_action( 'init', array( $this, 'init' ) );
		add_action( 'after_switch_theme', array( $this, 'after_switch_theme' ) );
		add_action( 'after_setup_theme', array( $this, 'after_setup_theme' ) );
		add_action( 'pre_get_posts', array( $this, 'customize_search' ) );

		add_filter( 'show_admin_bar', '__return_false' );
		add_filter( 'wpcom_better_footer_credit_link', array( $this, 'wpcom_better_footer_credit_link' ) );
		add_filter( 'get_the_archive_title', array( $this, 'get_the_archive_title' ), 10, 3 );

		add_filter( 'wp_theme_json_data_user', array( $this, 'filter_theme_json_data' ) );

		add_action( 'template_redirect', array( $this, 'empty_state_detector' ) );

		add_action(
			self::ACTION_UPDATE_THEME_VERSION,
			function() {
				flush_rewrite_rules( true );
			}
		);

		VideoPressHQPlaylist::register_hooks();

		// disable the wpcom launch banner
		add_filter( 'wpcom_register_banners', '__return_false' );
	}

	public function init() {
		$this->init_post_types();
		$this->init_taxonomies();
		$this->init_blocks();
		$this->init_pages();
		$this->init_edit_rewrites();

		$this->maybe_flush_rewrites();
		$this->enqueue_js();

		$this->init_og_tags();

		$this->update_theme_version();
	}

	private function update_theme_version() {
		$installed_theme_version = get_option( self::THEME_VERSION_OPTION, false );
		if ( self::THEME_VERSION !== $installed_theme_version ) {
			do_action( self::ACTION_UPDATE_THEME_VERSION, $installed_theme_version, self::THEME_VERSION );
			update_option( self::THEME_VERSION_OPTION, self::THEME_VERSION );
		}
	}

	public function after_setup_theme() {
		$this->load_textdomain();
		$this->hook_styles();
	}

	public function load_textdomain() {
		load_theme_textdomain( 'videopress-hq', get_template_directory() . '/languages' );
	}

	private function hook_styles() {
		// Editor requires add_editor_style to be called
		add_editor_style( 'style.css' );

		add_action(
			'wp_head',
			function () {
				wp_enqueue_style( 'videopress-hq-global-style', get_stylesheet_uri(), array(), self::THEME_VERSION );
				wp_add_inline_style(
					'videopress-hq-global-style',
					'.vphq-icon { display: block; width: 24px; height: 24px }' .
					'.vphq-icon.vphq-icon-playlist::after { content: url("' . esc_attr( get_template_directory_uri() . '/assets/images/icon-playlist.svg' ) . '"); }' .
					'.vphq-icon.vphq-icon-category::after { content: url("' . esc_attr( get_template_directory_uri() . '/assets/images/icon-file.svg' ) . '"); }' .
					'.vphq-icon.vphq-icon-hamburger::after { content: url("' . esc_attr( get_template_directory_uri() . '/assets/images/icon-hamburger.svg' ) . '"); }' .
					'.vphq-icon.vphq-icon-close-small::after { content: url("' . esc_attr( get_template_directory_uri() . '/assets/images/icon-close-small.svg' ) . '"); }'
				);
			}
		);
	}

	private function enqueue_js() {
		wp_enqueue_script( 'videopress-iframe-api', 'https://v0.wordpress.com/js/videojs/videopress-iframe-api.js', array(), false, true );
		wp_enqueue_script( self::GLOBAL_FUNCTIONS_SCRIPT_ID, get_template_directory_uri() . '/assets/js/functions.js', array(), self::THEME_VERSION, true );
		wp_enqueue_script( self::GLOBAL_JS_SCRIPT_ID, get_template_directory_uri() . '/assets/js/global.js', array( self::GLOBAL_FUNCTIONS_SCRIPT_ID ), self::THEME_VERSION, true );
	}

	private function init_post_types() {
		register_post_type(
			self::POST_TYPE_VIDEO,
			array(
				'labels'              => array(
					'name'          => __( 'Videos', 'videopress-hq' ),
					'singular_name' => __( 'Video', 'videopress-hq' ),
					'menu_name'     => __( 'Videos', 'videopress-hq' ),
				),
				'description'         => __( 'VideoPress HQ custom post type', 'videopress-hq' ),
				'public'              => true,
				'hierarchical'        => false,
				'exclude_from_search' => false,
				'publicly_queryable'  => true,
				'show_ui'             => true,
				'show_in_menu'        => true,
				'show_in_nav_menus'   => true,
				'show_in_admin_bar'   => true,
				'show_in_rest'        => true,
				'has_archive'         => 'videos',
				'rewrite'             => array( 'slug' => 'video' ),
				'capability_type'     => array( 'vp_video', 'vp_videos', 'vp_playlist', 'vp_playlists' ),
				'map_meta_cap'        => true,
				'taxonomies'          => array( 'category', 'post_tag', VideoPressHQPlaylist::TAXONOMY_NAME ),
				'supports'            => array(
					'title',
					'editor',
					'comments',
					'revisions',
					'author',
					'page-attributes',
					'thumbnail',
				),
			)
		);
	}

	private function init_taxonomies() {
		VideoPressHQPlaylist::register_taxonomy( self::POST_TYPE_VIDEO );
	}

	private function init_pages() {
		VideoPressHQCustomAdminPage::register();
	}

	private function init_blocks() {
		add_filter(
			'block_categories_all',
			function ( $block_categories ) {
				$block_categories[] = array(
					'slug'  => 'videopress-hq',
					'title' => __( 'VideoPress HQ', 'videopress-hq' ),
				);

				return $block_categories;
			}
		);

		VideoPressHQBlockVideoMeta::register();
		VideoPressHQBlockVideoPosterLink::register();
		VideoPressHQBlockAdminMenu::register();
		VideoPressHQBlockCategoriesMenu::register();
		VideoPressHQBlockDateHumanDiff::register();
		VideoPressHQBlockVideoStat::register();
		VideoPressHQBlockThemeImage::register();
		VideoPressHQBlockTrialBar::register();
		VideoPressHQBlockVideoQueryLoop::register();
		VideoPressHQBlockPlaylist::register();
		VideoPressHQBlockEditLink::register();
		VideoPressHQBlockPlaylistList::register();
		VideoPressHQBlockPostContent::register();
		VideoPressHQBlockCustomMainMenu::register();
	}

	function init_edit_rewrites() {
		add_filter(
			'query_vars',
			function ( $vars ) {
				$vars[] = 'vp-custom-page';
				$vars[] = 'playlist_id';
				return $vars;
			}
		);

		$admin_pages = vphq_get_custom_admin_pages();

		foreach ( $admin_pages as $key => $params ) {
			if ( is_string( $params ) ) {
				add_rewrite_rule(
					'^manage/' . $key . '$',
					$params,
					'top'
				);
			} elseif ( isset( $params['rule'] ) ) {
				$pattern = is_string( $params['rule'] ) ? $key : $params['rule']['pattern'];
				$rewrite = is_string( $params['rule'] ) ? $params['rule'] : $params['rule']['rewrite'];
				$prefix  = isset( $params['no_prefix'] ) && $params['no_prefix'] ? '' : 'manage/';
				add_rewrite_rule(
					'^' . $prefix . $pattern . '$',
					$rewrite,
					'top'
				);
			}
		}

		// public rewrite rules
		// one off rewrite for public playlists list. If we need more of these we should do something more generic.
		add_rewrite_rule(
			'^playlists$',
			'index.php?vp-custom-page=public-playlists',
			'top'
		);

		add_action(
			'template_include',
			function( $template ) {
				global $_wp_current_template_content;

				if ( 'public-playlists' === get_query_var( 'vp-custom-page' ) ) {
					ob_start();

					block_template_part( 'header' );
					include VPHQ_ROOT . '/templates/page-playlists.html';
					block_template_part( 'footer' );

					$_wp_current_template_content = ob_get_clean();
				}

				return $template;
			}
		);
	}

	public function maybe_flush_rewrites() {
		if ( 'yes' === get_option( 'videopress_hq_flush_rewrite_rules' ) ) {
			update_option( 'videopress_hq_flush_rewrite_rules', 'no' );
			flush_rewrite_rules( true );
		}
	}

	public function after_switch_theme() {
		if ( 'yes' !== get_option( 'videopress_hq_flush_rewrite_rules' ) ) {
			update_option( 'videopress_hq_flush_rewrite_rules', 'yes' );
		}

		$this->add_video_post_type_to_sharing_options();

		$this->prevent_atomic_transfer();
	}

	/**
	 * Ensures the vp_video post type is in the "sharing-options" site option when activating this theme.
	 * If the setting is present, then likes will be enabled for this post type.
	 */
	public function add_video_post_type_to_sharing_options() {
		$sharing_option = get_option( 'sharing-options' );
		if ( ! isset( $sharing_option['global']['show'] ) || ! is_array( $sharing_option['global']['show'] ) ) {
			return;
		}

		if ( ! in_array( self::POST_TYPE_VIDEO, $sharing_option['global']['show'], true ) ) {
			array_push( $sharing_option['global']['show'], self::POST_TYPE_VIDEO );
			update_option( 'sharing-options', $sharing_option );
		}
	}

	private function prevent_atomic_transfer() {
		if ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) {
			return;
		}

		$blog_id = wpcom_get_blog_id();

		add_blog_sticker( 'blocked-from-atomic-transfer', 'New VideoPress HQ', get_current_user_id(), $blog_id );
	}

	public function customize_search( $query ) {
		if ( $query->is_archive() && $query->is_category() ) {
			$query->set( 'post_type', self::POST_TYPE_VIDEO );
			$query->set( 'posts_per_page', 12 );
		} elseif ( $query && $query->is_search() && ! is_admin() ) {
			$search_term = trim( $query->get( 's' ) );
			if ( ':related-videos' === $search_term ) {
				$query->set( 's', '' );
				return $this->customize_related_videos( $query );
			} elseif ( ':exclude-current-video-id' === $search_term ) {
				$query->set( 's', '' );
				return $this->exclude_current_video_id( $query );
			} elseif ( ! is_admin() ) {
				$query->set( 'post_type', self::POST_TYPE_VIDEO );
				$query->set( 'posts_per_page', 12 );
			}
		}

		return $query;
	}

	private function customize_related_videos( $query ) {
		$post_id = get_the_ID();
		if ( false === $post_id ) {
			return $query;
		}

		$post = get_post( $post_id );
		if ( ! $post ) {
			return $query;
		}

		$query->set( 'post_type', self::POST_TYPE_VIDEO );
		if ( $post->post_category ) {
			$query->set( 'category__in', $post->post_category );
		}

		return $this->exclude_current_video_id( $query );
	}

	private function exclude_current_video_id( $query ) {
		$post_id = get_the_ID();
		if ( false === $post_id ) {
			return $query;
		}

		$query->set( 'post__not_in', array( $post_id ) );

		return $query;
	}

	public function wpcom_better_footer_credit_link() {
		return '';
	}

	public function init_og_tags() {
		add_filter(
			'jetpack_open_graph_tags',
			function ( $og_tags ) {
				global $post;

				if ( ! is_a( $post, 'WP_Post' ) ) {
					return $og_tags;
				}

				if ( empty( $post ) || empty( $post->ID ) ) {
					return $og_tags;
				}

				$post_id = $post->ID;

				$video_guid = get_post_meta( $post_id, 'guid', true );

				if ( empty( $video_guid ) ) {
					return $og_tags;
				}

				$video_info = video_get_info_by_guid( $video_guid );

				if ( empty( $video_info ) ) {
					return $og_tags;
				}

				$width           = $video_info->width;
				$height          = $video_info->height;
				$post_thumbnail  = get_the_post_thumbnail_url( $post_id );
				$video_embed_url = sprintf( 'https://videopress.com/embed/%s', $video_guid );

				// get "best" adaptive streaming playlist if available
				$video_adaptive_playlist = null;
				if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
					$file_url_base_https   = "https://videos.files.wordpress.com/{$video_info->guid}/";
					$adaptive_playlist_key = video_find_largest_adaptive_playlist_key( $video_info );

					if ( null !== $adaptive_playlist_key ) {
						$video_adaptive_playlist = $file_url_base_https . $video_info->{ $adaptive_playlist_key };
					}
				}

				if ( empty( $post_thumbnail ) ) {
					$video_details  = videopress_hq_get_video_details( $video_guid );
					$post_thumbnail = $video_details->poster ?? '';
				}

				if ( ! empty( $post_thumbnail ) ) {
					$og_tags['og:image']      = $post_thumbnail;
					$og_tags['twitter:image'] = $post_thumbnail;
				}

				if ( ! empty( $og_tags['og:image'] ) ) {
					$og_tags['og:image:alt'] = $og_tags['og:title'];
				}

				$og_tags['twitter:card']          = 'player';
				$og_tags['twitter:player']        = $video_embed_url;
				$og_tags['twitter:player:width']  = $width;
				$og_tags['twitter:player:height'] = $height;

				$og_tags['og:video:type']       = 'text/html';
				$og_tags['og:video']            = array( $video_embed_url, $video_adaptive_playlist );
				$og_tags['og:video:secure_url'] = array( $video_embed_url, $video_adaptive_playlist );
				$og_tags['og:video:width']      = $width;
				$og_tags['og:video:height']     = $height;

				return $og_tags;
			},
			11
		); // after wpcom_twitter_cards_tags
	}

	public function filter_theme_json_data( $user_json ) {
		$custom_colors_option = vphq_get_site_custom_colors();
		if ( ! is_array( $custom_colors_option ) || empty( $custom_colors_option ) ) {
			return $user_json;
		}

		$theme_json   = WP_Theme_JSON_Resolver::get_theme_data();
		$theme_data   = $theme_json->get_data();
		$theme_colors = $theme_data['settings']['color']['palette'] ?? array();

		foreach ( $theme_colors as $idx => $theme_color ) {
			$color_slug   = $theme_color['slug'];
			$custom_color = sanitize_hex_color_with_alpha( $custom_colors_option[ $color_slug ] ?? '' );
			if ( ! empty( $custom_color ) ) {
				$theme_colors[ $idx ]['color'] = $custom_color;
			}
		}

		return $user_json->update_with(
			array(
				'version'  => $theme_data['version'],
				'settings' => array(
					'color' => array(
						'palette' => $theme_colors,
					),
				),
			)
		);
	}

	/**
	 * Detects empty state of the site by checking the cached post count by status
	 *  collection (only include published posts) and redirects to the onboarding page.
	 *
	 * Only runs on the homepage. Since custom admin pages are handled by index.php,
	 *  we also need to check that the custom page param doesn't have a value.
	 *
	 * @return void
	 */
	public function empty_state_detector() {
		$custom_page_param = get_query_var( 'vp-custom-page' );

		if ( is_front_page() && empty( $custom_page_param ) && current_user_can( VideoPressHQCaps::CAP_PUBLISH_VIDEO ) ) {
			$num_videos = wp_count_posts( 'vp_video' );

			if ( empty( $num_videos->publish ) ) {
				wp_redirect( vphq_admin_page_link( 'onboarding' ) );
				die();
			}
		}
	}

	public function get_the_archive_title( $title, $original_title, $prefix ) {
		if ( is_post_type_archive() ) {
			$title  = post_type_archive_title( '', false );
			return sprintf(
				/* translators: %s: Archive title */
				_x( 'All %s', 'archive title', 'videopress-hq' ),
				$title
			);
		}

		return $title;
	}
}