<?php
/**
 * The initializer class for Admin UI elements
 *
 * @package automattic/jetpack-videopress
 */

namespace Automattic\Jetpack\VideoPress;

use Automattic\Jetpack\Admin_UI\Admin_Menu;
use Automattic\Jetpack\Assets;
use Automattic\Jetpack\Connection\Initial_State as Connection_Initial_State;
use Automattic\Jetpack\Connection\Manager as Connection_Manager;
use Automattic\Jetpack\Current_Plan;
use Automattic\Jetpack\My_Jetpack\Products as My_Jetpack_Products;
use Automattic\Jetpack\Status;
use Automattic\Jetpack\Status\Host;
use Automattic\Jetpack\Terms_Of_Service;
use Automattic\Jetpack\Tracking;

/**
 * Initialized the VideoPress package
 */
class Admin_UI {

	const JETPACK_VIDEOPRESS_PKG_NAMESPACE = 'jetpack-videopress-pkg';

	const ADMIN_PAGE_SLUG = 'jetpack-videopress';

	/**
	 * Filter name that gates the wp-build–based dashboard.
	 *
	 * When this filter returns true, "Jetpack > VideoPress" renders the new
	 * wp-build dashboard instead of the legacy React app.
	 */
	const MODERNIZATION_FILTER = 'rsm_jetpack_ui_modernization_videopress';

	/**
	 * Initializes the Admin UI of VideoPress
	 *
	 * This method is called only once by the Initializer class
	 *
	 * @return void
	 */
	public static function init() {

		add_action( 'admin_menu', array( __CLASS__, 'enable_menu' ), 1 ); // Akismet uses 4, so we use 1 to ensure both menus are added when only they exist.

		add_action( 'admin_footer-upload.php', array( __CLASS__, 'attachment_details_two_column_template' ) );
		add_action( 'admin_footer-post.php', array( __CLASS__, 'attachment_details_template' ), 20 );

		add_filter( 'get_edit_post_link', array( __CLASS__, 'edit_video_link' ), 10, 3 );

		add_action( 'admin_init', array( __CLASS__, 'remove_jetpack_hooks' ) );

		if ( self::is_modernized() && self::is_videopress_admin_request() ) {
			self::load_wp_build();
			add_action( 'current_screen', array( __CLASS__, 'alias_screen_id_for_wp_build' ) );
		}
	}

	/**
	 * Enable the menu, separately to init due to translations needing to run early for the page suffix.
	 *
	 * @return void
	 */
	public static function enable_menu() {
		$callback = self::is_modernized() && function_exists( 'jetpack_videopress_jetpack_videopress_dashboard_wp_admin_render_page' )
			? 'jetpack_videopress_jetpack_videopress_dashboard_wp_admin_render_page'
			: array( __CLASS__, 'plugin_settings_page' );

		$page_suffix = Admin_Menu::add_menu(
			// "VideoPress" is a product name, do not translate.
			'Jetpack VideoPress',
			'VideoPress',
			'manage_options',
			self::ADMIN_PAGE_SLUG,
			$callback,
			3
		);
		add_action( 'load-' . $page_suffix, array( __CLASS__, 'admin_init' ) );
	}

	/**
	 * Gets the URL for the VideoPress admin page
	 *
	 * @return string
	 */
	public static function get_admin_page_url() {
		return admin_url( 'admin.php?page=' . self::ADMIN_PAGE_SLUG );
	}

	/**
	 * Gets the list of allowed video extensions
	 *
	 * @return array
	 */
	public static function get_allowed_video_extensions() {
		return array(
			'3g2'  => 'video/3gpp2',
			'3gp'  => 'video/3gpp',
			'3gp2' => 'video/3gpp2',
			'3gpp' => 'video/3gpp',
			'avi'  => 'video/avi',
			'm4v'  => 'video/mp4',
			'mov'  => 'video/quicktime',
			'mp4'  => 'video/mp4',
			'mpe'  => 'video/mpeg',
			'mpeg' => 'video/mpeg',
			'mpg'  => 'video/mpeg',
			'ogv'  => 'video/ogg',
			'wmv'  => 'video/x-ms-wmv',
		);
	}

	/**
	 * Initialize the admin resources.
	 */
	public static function admin_init() {
		add_action( 'admin_enqueue_scripts', array( __CLASS__, 'enqueue_admin_scripts' ) );
	}

	/**
	 * Main plugin settings page.
	 */
	public static function plugin_settings_page() {
		?>
			<div id="jetpack-videopress-root"></div>
		<?php
	}

	/**
	 * Remove extra fields from Attachment details modal
	 *
	 * @return void
	 */
	public static function remove_jetpack_hooks() {
		if ( class_exists( '\VideoPress_Edit_Attachment' ) ) {
			$edit_attachment = \VideoPress_Edit_Attachment::init();
			remove_filter( 'attachment_fields_to_edit', array( $edit_attachment, 'fields_to_edit' ) );
			remove_filter( 'attachment_fields_to_save', array( $edit_attachment, 'save_fields' ) );
		}
	}

	/**
	 * Returns whether we are in condition to track to use
	 * Analytics functionality like Tracks, MC, or GA.
	 */
	public static function can_use_analytics() {
		$status     = new Status();
		$connection = new Connection_Manager();
		$tracking   = new Tracking( 'jetpack', $connection );

		return $tracking->should_enable_tracking( new Terms_Of_Service(), $status );
	}

	/**
	 * Enqueue plugin admin scripts and styles.
	 */
	public static function enqueue_admin_scripts() {
		// This callback is registered via `load-{$page_suffix}` in `enable_menu()`,
		// so it only fires on the VideoPress admin page — no need to re-check the page here.
		if ( self::is_modernized() ) {
			// Page-level shell stylesheet: scopes the shared `jetpack-admin-page-layout`
			// mixin to the dashboard body so every route inherits the proper
			// scrollable chrome (fixed `#wpbody-content`, scrollable middle, pinned
			// footer) regardless of whether it uses DashboardLayout. Without this,
			// non-tabbed routes (e.g. Video details) would only get the layout
			// after a sibling route's chunk happened to inject the same CSS.
			$shell_css = dirname( __DIR__ ) . '/build/dashboard-shell/index.css';
			if ( file_exists( $shell_css ) ) {
				wp_register_style(
					'jetpack-videopress-dashboard-shell',
					plugins_url( 'build/dashboard-shell/index.css', __DIR__ ),
					array(),
					(string) filemtime( $shell_css )
				);
				wp_style_add_data( 'jetpack-videopress-dashboard-shell', 'rtl', 'replace' );
				wp_enqueue_style( 'jetpack-videopress-dashboard-shell' );
			}

			// The Video details screen's thumbnail editor opens the WordPress
			// media library (via window.wp.media) for the "Upload image"
			// action, so the media scripts must be present here too.
			wp_enqueue_media();

			// Beyond the shell stylesheet and the media library, wp-build
			// manages its own enqueue pipeline. The legacy script, initial
			// state, and tracking are all intentionally skipped for the
			// wp-build dashboard.
			return;
		}

		Assets::register_script(
			self::JETPACK_VIDEOPRESS_PKG_NAMESPACE,
			'../build/admin/index.js',
			__FILE__,
			array(
				'in_footer'  => true,
				'textdomain' => 'jetpack-videopress-pkg',
			)
		);
		Assets::enqueue_script( self::JETPACK_VIDEOPRESS_PKG_NAMESPACE );

		// Required for Media Library access
		wp_enqueue_media();

		// Required for Analytics.
		if ( self::can_use_analytics() ) {
			Tracking::register_tracks_functions_scripts( true );
		}

		// Initial JS state including JP Connection data.
		Connection_Initial_State::render_script( self::JETPACK_VIDEOPRESS_PKG_NAMESPACE );
		wp_add_inline_script( self::JETPACK_VIDEOPRESS_PKG_NAMESPACE, self::render_initial_state(), 'before' );
	}

	/**
	 * Render the initial state into a JavaScript variable.
	 *
	 * @return string
	 */
	public static function render_initial_state() {
		return 'var jetpackVideoPressInitialState=' . wp_json_encode( self::initial_state(), JSON_UNESCAPED_SLASHES | JSON_HEX_TAG | JSON_HEX_AMP ) . ';';
	}

	/**
	 * Get the initial state data for hydrating the React UI.
	 *
	 * @return array
	 */
	public static function initial_state() {
		return array(
			'apiRoot'                => esc_url_raw( rest_url() ),
			'apiNonce'               => wp_create_nonce( 'wp_rest' ),
			'registrationNonce'      => wp_create_nonce( 'jetpack-registration-nonce' ),
			'adminUrl'               => self::get_admin_page_url(),
			'adminUri'               => 'admin.php?page=' . self::ADMIN_PAGE_SLUG,
			'paidFeatures'           => array(
				'isVideoPressSupported'          => Current_Plan::supports( 'videopress' ),
				// Check videopress-1tb-storage (Jetpack) or videopress (WordPress.com).
				'isVideoPress1TBSupported'       => Current_Plan::supports( 'videopress-1tb-storage' )
					|| ( ( new Host() )->is_wpcom_platform() && wpcom_site_has_feature( 'videopress' ) ),
				'isVideoPressUnlimitedSupported' => Current_Plan::supports( 'videopress-unlimited-storage' ),
			),
			'siteSuffix'             => ( new Status() )->get_site_suffix(),
			'productData'            => Plan::get_product(),
			'productPrice'           => Plan::get_product_price(),
			'siteProductData'        => My_Jetpack_Products::get_product( 'videopress' ),
			'allowedVideoExtensions' => self::get_allowed_video_extensions(),
			'initialState'           => Data::get_initial_state(),
			'contentNonce'           => wp_create_nonce( 'videopress-content-nonce' ),
		);
	}

	/**
	 * Replaces the edit link for videopress videos
	 *
	 * @param string $link - the post link.
	 * @param int    $post_id - the post ID.
	 * @param string $context - the context.
	 *
	 * @return string
	 */
	public static function edit_video_link( $link, $post_id, $context ) {
		$post_id = (int) $post_id;
		if ( ! $post_id ) {
			return $link;
		}

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

		if ( 'attachment' !== $post->post_type || 'video/videopress' !== $post->post_mime_type ) {
			return $link;
		}

		$route = sprintf( '#/video/%d/edit', $post_id );
		$url   = self::get_admin_page_url() . $route;

		if ( 'display' === $context ) {
			return esc_url( $url );
		}

		return esc_url_raw( $url );
	}

	/**
	 * Gets the SVG for the sub brand Jetpack VideoPress logo
	 *
	 * @return string
	 */
	protected static function get_logo_svg() {
		return '<svg width="212" height="27" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M110.441 16.294c.479-1.458.995-2.93 1.547-4.414l2.545-6.87h1.687l-5.09 13.361h-1.427l-5.09-13.361h1.687l2.545 6.87a109.628 109.628 0 0 1 1.556 4.414h.04ZM117.919 18.371V8.884h1.547v9.487h-1.547Zm-.04-11.694V4.95h1.627v1.727h-1.627ZM123.331 13.728c0 .546.06 1.042.179 1.488.127.439.306.815.539 1.128.233.306.519.543.858.71.34.166.729.249 1.168.249.326 0 .622-.044.888-.13.266-.087.503-.196.709-.33a3.045 3.045 0 0 0 .898-.838V11.04a3.706 3.706 0 0 0-1.108-.779c-.419-.2-.871-.3-1.357-.3a2.83 2.83 0 0 0-.928.17 2.26 2.26 0 0 0-.898.59c-.273.286-.499.672-.679 1.158-.179.48-.269 1.095-.269 1.848Zm-1.617.02c0-.66.063-1.242.19-1.748.133-.513.306-.959.519-1.338.212-.38.462-.696.748-.949.286-.26.582-.47.888-.629.306-.16.616-.273.928-.34.32-.073.619-.11.898-.11.579 0 1.082.097 1.507.29.426.193.809.476 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	}

	// phpcs:disable WordPress.Security.EscapeOutput.UnsafePrintingFunction
	// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped

	/**
	 * Overwrites the backbone template for the attachment details modal
	 *
	 * This template is originally added in WP core in wp-includes/media-templates.php
	 *
	 * We override the initialize method of the TwoColumn view class (located at core's js/media/view/attachment/detail-two-column.js)
	 * and use the custom template only for VideoPress videos.
	 *
	 * @return void
	 */
	public static function attachment_details_two_column_template() {

		?>
		<script type="text/html" id="tmpl-videopress_iframe_vnext">
			<iframe class="videopress-iframe" style="display: block; max-width: 100%; max-height: 100%;" width="{{ data.width }}" height="{{ data.height }}" src="https://videopress.com/embed/{{ data.guid }}?{{ data.urlargs }}" frameborder='0' allowfullscreen></iframe>
		</script>
		<script type="text/html" id="tmpl-attachment-details-two-column-videopress">
			<div class="attachment-media-view {{ data.orientation }}">
				<h2 class="screen-reader-text"><?php _e( 'Attachment Preview', 'jetpack-videopress-pkg' ); ?></h2>
				<div class="thumbnail thumbnail-{{ data.type }}">
				</div>
			</div>
			<div class="attachment-info">
				<h2>
					<?php echo self::get_logo_svg(); ?>
				</h2>
				<?php self::attachment_info_template_part(); ?>
			</div>
		</script>
		<script>
			jQuery(document).ready( function($) {
				if( typeof wp.media.view.Attachment.Details.TwoColumn != 'undefined' ){
					var TwoColumn   = wp.media.view.Attachment.Details.TwoColumn,
						old_render  = TwoColumn.prototype.render,
						vp_template = wp.template('videopress_iframe_vnext');

					TwoColumn.prototype.initialize = function() {
						if ( 'video' === this.model.attributes.type && 'videopress' === this.model.attributes.subtype ) {
							this.template = wp.template( 'attachment-details-two-column-videopress' );
						} else {
							this.template = wp.template( 'attachment-details-two-column' );
						}
						// From this point on, we are just copying the function from core.
						this.controller.on( 'content:activate:edit-details', _.bind( this.editAttachment, this ) );
						wp.media.view.Attachment.Details.prototype.initialize.apply( this, arguments );
					}

					// Add the VideoPress player
					TwoColumn.prototype.render = function() {
						// Have the original renderer run first.
						old_render.apply( this, arguments );

						// Now our stuff!
						if ( 'video' === this.model.get('type') ) {
							if ( this.model.get('videopress_guid') ) {
								this.$('.attachment-media-view .thumbnail-video').html( vp_template( {
									guid   : this.model.get('videopress_guid'),
									width  : this.model.get('width') > 0 ? this.model.get('width') : '100%',
									height : this.model.get('height') > 0 ? this.model.get('height') : '100%'
								}));
							}
						}
					};
				}
			});
		</script>
		<?php
	}

	/**
	 * Overwrites the backbone template for the attachment details modal
	 *
	 * This template is originally added in WP core in wp-includes/media-templates.php
	 *
	 * We override the initialize method of the TwoColumn view class (located at core's js/media/view/attachment/detail-two-column.js)
	 * and use the custom template only for VideoPress videos.
	 *
	 * @return void
	 */
	public static function attachment_details_template() {
		?>
		<script type="text/html" id="tmpl-videopress_iframe_vnext">
			<iframe class="videopress-iframe" style="display: block; max-width: 100%; max-height: 180px;" width="{{ data.width }}" height="{{ data.height }}" src="https://videopress.com/embed/{{ data.guid }}?{{ data.urlargs }}" frameborder='0' allowfullscreen></iframe>
		</script>
		<script type="text/html" id="tmpl-attachment-details-videopress">
			<h2>
				<?php echo self::get_logo_svg(); ?>
			</h2>
			<div class="attachment-info">
				<div class="wp-media-wrapper wp-video">
				</div>
				<?php self::attachment_info_template_part(); ?>
			</div>
		</script>
		<script>
			jQuery(document).ready( function($) {
				if( typeof wp.media.view.Attachment.Details != 'undefined' ){
					var DetailsTemplate = wp.media.view.Attachment.Details,
						old_render      = DetailsTemplate.prototype.render,
						vp_template     = wp.template('videopress_iframe_vnext');

						DetailsTemplate.prototype.initialize = function() {
							if ( 'video' === this.model.attributes.type && 'videopress' === this.model.attributes.subtype ) {
								this.template = wp.template( 'attachment-details-videopress' );
							} else {
								this.template = wp.template( 'attachment-details' );
							}
							// From this point on, we are just copying the function from core.
							this.options = _.defaults( this.options, {
								rerenderOnModelChange: false
							});

							// Call 'initialize' directly on the parent class.
							wp.media.view.Attachment.prototype.initialize.apply( this, arguments );

							this.copyAttachmentDetailsURLClipboard();
						}

						// Add the VideoPress player
						DetailsTemplate.prototype.render = function() {
							// Have the original renderer run first.
							old_render.apply( this, arguments );

							// Now our stuff!
							if ( 'video' === this.model.get('type') ) {
								if ( this.model.get('videopress_guid') ) {
									this.$('.attachment-info .wp-video').html( vp_template( {
										guid   : this.model.get('videopress_guid'),
										// width  : this.model.get('width') > 0 ? this.model.get('width') : '100%',
										// height : this.model.get('height') > 0 ? this.model.get('height') : '100%'
									}));
								}
							}
						};
				}
			});
		</script>
		<?php
	}

	/**
	 * Echoes the piece of the custom template that is shared between the two templates above
	 *
	 * @return void
	 */
	protected static function attachment_info_template_part() {
		?>
		<span class="setting" data-setting="title">
			<label for="attachment-details-title" class="name"><?php _e( 'Title', 'jetpack-videopress-pkg' ); ?></label>
			<input type="text" id="attachment-details-title" value="{{ data.title }}" readonly />
		</span>
		<span class="setting" data-setting="filename">
			<label for="attachment-details-filename" class="name"><?php _e( 'File name', 'jetpack-videopress-pkg' ); ?></label>
			<input type="text" id="attachment-details-filename" value="{{ data.filename }}" readonly />
		</span>
		<span class="setting" data-setting="fileurl">
			<label for="attachment-details-copy-link" class="name"><?php _e( 'File URL:', 'jetpack-videopress-pkg' ); ?></label>
			<input type="text" class="attachment-details-copy-link" id="attachment-details-copy-link" value="{{ data.url }}" readonly />
			<div class="copy-to-clipboard-container">
				<button type="button" class="button button-small copy-attachment-url" data-clipboard-target="#attachment-details-copy-link"><?php _e( 'Copy URL to clipboard', 'jetpack-videopress-pkg' ); ?></button>
				<span class="success hidden" aria-hidden="true"><?php _e( 'Copied!', 'jetpack-videopress-pkg' ); ?></span>
			</div>
		</span>
		<p><a href="{{ data.editLink }}" class="button button-medium" target="_blank"><?php _e( 'Edit video details', 'jetpack-videopress-pkg' ); ?></a></p>
		<?php
	}
	// phpcs:enable WordPress.Security.EscapeOutput.UnsafePrintingFunction
	// phpcs:enable WordPress.Security.EscapeOutput.OutputNotEscaped

	/**
	 * Load the wp-build entry file and register its polyfills.
	 *
	 * Only called on `?page=jetpack-videopress` admin requests when the
	 * modernization filter is enabled. Keeps wp-build off every other request.
	 *
	 * @return void
	 */
	private static function load_wp_build() {
		$build_index = dirname( __DIR__ ) . '/build/build.php';

		if ( ! file_exists( $build_index ) ) {
			return;
		}

		require_once $build_index;

		\Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills::register(
			'jetpack-videopress',
			array_merge(
				\Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills::SCRIPT_HANDLES,
				\Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills::MODULE_IDS
			)
		);
	}

	/**
	 * Alias the current screen ID to satisfy wp-build's auto-generated enqueue check.
	 *
	 * Wp-build's `<page>-wp-admin` enqueue callback enqueues only when the screen ID
	 * matches the wp-build page slug (`jetpack-videopress-dashboard`). Our WP-admin
	 * menu slug stays `jetpack-videopress`, so we mutate the screen object in place
	 * to make the check pass without changing the user-facing URL.
	 *
	 * Hooked only when modernization is on AND we're on the VideoPress admin page,
	 * so this never affects any other request.
	 *
	 * @param \WP_Screen|null $screen The current screen object (passed by WP).
	 * @return void
	 */
	public static function alias_screen_id_for_wp_build( $screen ) {
		if ( ! is_object( $screen ) ) {
			return;
		}

		$screen->id = 'jetpack-videopress-dashboard';
	}

	/**
	 * Returns true when the wp-build modernization filter is enabled.
	 *
	 * @return bool
	 */
	public static function is_modernized() {
		return (bool) apply_filters( self::MODERNIZATION_FILTER, true );
	}

	/**
	 * Returns true when the current request targets the VideoPress admin page.
	 *
	 * Used to scope wp-build loading to the one page that needs it. The
	 * `$_GET['page']` value is populated by wp-admin/admin.php before any of
	 * our hooks fire, so this check is reliable from `init()` onwards.
	 *
	 * @return bool
	 */
	private static function is_videopress_admin_request() {
		if ( ! is_admin() || ! isset( $_GET['page'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
			return false;
		}

		return sanitize_text_field( wp_unslash( $_GET['page'] ) ) === self::ADMIN_PAGE_SLUG; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	}
}
