<?php
/**
 * Yoast SEO Video plugin file.
 *
 * @package    Internals
 * @since      3.7.0
 * @version    3.7.0
 */

// Avoid direct calls to this file.
if ( ! class_exists( 'WPSEO_Video_Sitemap' ) ) {
	header( 'Status: 403 Forbidden' );
	header( 'HTTP/1.1 403 Forbidden' );
	exit();
}

if ( ! class_exists( 'WPSEO_Video_Details_Ustudio' ) ) {

	/**
	 * Class WPSEO_Video_Details_Ustudio
	 */
	class WPSEO_Video_Details_Ustudio extends WPSEO_Video_Details {

		/**
		 * Regular expression to retrieve a video ID from a known video URL.
		 *
		 * The ID for use in this module is combo of {destination_id/video_id} (include '/').
		 *
		 * @var string
		 */
		protected $id_regex = '`ustudio\.com/embed/([/a-zA-Z0-9]+)`i';

		/**
		 * Sprintf template to create a URL from an ID.
		 *
		 * @var string
		 */
		protected $url_template = 'https://app.ustudio.com/embed/%s';

		/**
		 * Information on the remote URL to use for retrieving the video details.
		 *
		 * @var array<string, string>
		 */
		protected $remote_url = [
			'pattern'       => 'https://app.ustudio.com/embed/%s/config.json',
			'replace_key'   => 'id',
			'response_type' => 'json',
		];

		/**
		 * First video in the response.
		 *
		 * @var array|false
		 */
		private $first_video;

		/**
		 * Information on the largest transcode.
		 *
		 * @var array|false
		 */
		private $transcode;

		/**
		 * Set video details to their new values
		 *
		 * The actual setting is done via methods in the concrete classes.
		 *
		 * @return void
		 */
		protected function put_video_details() {
			$this->first_video = $this->get_decoded_video();

			if ( is_array( $this->first_video ) ) {
				$this->transcode = $this->get_transcode();
				parent::put_video_details();
			}
		}

		/**
		 * Set the player location.
		 *
		 * @return void
		 */
		protected function set_player_loc() {
			if ( ! empty( $this->vid['id'] ) ) {
				$this->vid['player_loc'] = 'https://app.ustudio.com/embed/' . $this->vid['id'];
			}
		}

		/**
		 * Pull the first video from the details, if exists.
		 *
		 * @return array|false
		 */
		protected function get_decoded_video() {
			if ( ! empty( $this->decoded_response->videos ) ) {
				return $this->decoded_response->videos[0];
			}
			return false;
		}

		/**
		 * Pull the largest (widest) transcode, preferably mp4.
		 *
		 * @return array|false
		 */
		protected function get_transcode() {
			$transcode = false;
			if ( ! empty( $this->first_video->transcodes ) ) {
				foreach ( $this->first_video->transcodes as $format => $items ) {
					foreach ( $items as $item ) {
						$item->format = $format;
						if ( ! $transcode ) {
							// For starters, use the first transcode we find.
							$transcode = $item;
						}
						elseif ( $format === 'mp4' && $transcode->format !== 'mp4' ) {
							// If item is mp4 and best transcode isn't, use the mp4.
							$transcode = $item;
						}
						elseif ( $item->width > $transcode->width ) {
							// If item is wider, use it.
							$transcode = $item;
						}
					}
				}
			}
			return $transcode;
		}

		/**
		 * Set the thumbnail location
		 *
		 * @return void
		 */
		protected function set_thumbnail_loc() {
			if ( ! empty( $this->first_video->images ) ) {
				foreach ( $this->first_video->images as $image ) {
					if ( $image->type === 'poster' ) {
						$local_img = $this->make_image_local( $image->image_url );
						if ( is_string( $local_img ) && $local_img !== '' ) {
							$this->vid['thumbnail_loc'] = $local_img;
							return;
						}
					}
				}
			}
		}

		/**
		 * Set the duration
		 *
		 * @return void
		 */
		protected function set_duration() {
			if ( ! empty( $this->first_video->duration ) && is_numeric( $this->first_video->duration ) ) {
				$this->vid['duration'] = $this->first_video->duration;
			}
		}

		/**
		 * Set the video height
		 *
		 * @return void
		 */
		protected function set_height() {
			if ( ! empty( $this->transcode->height ) && is_numeric( $this->transcode->height ) ) {
				$this->vid['height'] = $this->transcode->height;
			}
		}

		/**
		 * Set the video width
		 *
		 * @return void
		 */
		protected function set_width() {
			if ( ! empty( $this->transcode->width ) && is_numeric( $this->transcode->width ) ) {
				$this->vid['width'] = $this->transcode->width;
			}
		}

		/**
		 * Set the location of the content
		 *
		 * @return void
		 */
		protected function set_content_loc() {
			if ( ! empty( $this->transcode->url ) ) {
				$this->vid['content_loc'] = $this->transcode->url;
			}
		}
	}
}