<?php
/**
 * Player (saved player config) post type.
 *
 * @package StreamSera
 */

namespace StreamSera\PostTypes;

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

/**
 * `streamsera_player` — a saved, reusable player configuration built in the visual builder.
 */
class Player {

	const POST_TYPE = 'streamsera_player';

	/**
	 * Hook in.
	 */
	public function register() {
		add_action( 'init', array( $this, 'register_post_type' ) );
		add_action( 'init', array( $this, 'register_meta' ) );
	}

	/**
	 * Register the CPT.
	 */
	public function register_post_type() {
		register_post_type(
			self::POST_TYPE,
			array(
				'labels'              => array(
					'name'          => __( 'Players', 'streamsera' ),
					'singular_name' => __( 'Player', 'streamsera' ),
				),
				'public'              => false,
				'show_ui'             => false,
				'show_in_rest'        => true,
				'rest_base'           => 'streamsera-players',
				'rest_namespace'      => 'wp/v2',
				'supports'            => array( 'title', 'custom-fields' ),
				'capability_type'     => 'post',
				'map_meta_cap'        => true,
				'exclude_from_search' => true,
			)
		);
	}

	/**
	 * Register the config meta (free-form object, sanitized on save).
	 */
	public function register_meta() {
		register_post_meta(
			self::POST_TYPE,
			'_streamsera_config',
			array(
				'type'              => 'object',
				'single'            => true,
				'default'           => streamsera_default_player_config(),
				'show_in_rest'      => array(
					'schema' => array(
						'type'                 => 'object',
						'properties'           => array(),
						'additionalProperties' => true,
					),
				),
				'auth_callback'     => static function () {
					return current_user_can( 'edit_posts' );
				},
				'sanitize_callback' => 'streamsera_sanitize_player_config',
			)
		);
	}

	/**
	 * Make the first published station of a player its primary one.
	 *
	 * When the primary station is deleted or unpublished, the next published station of the player
	 * takes its place (and leaves the extra-stations list), as in the builder preview, so the player
	 * keeps working on the site.
	 *
	 * @param array $config Player config.
	 * @return array
	 */
	public static function with_live_station( array $config ) {
		$primary = isset( $config['station'] ) ? (int) $config['station'] : 0;
		if ( $primary && Station::to_public( $primary ) ) {
			return $config;
		}
		$extra = isset( $config['stations'] ) ? array_values( (array) $config['stations'] ) : array();
		foreach ( $extra as $i => $sid ) {
			if ( Station::to_public( (int) $sid ) ) {
				$config['station'] = (int) $sid;
				unset( $extra[ $i ] );
				$config['stations'] = array_values( $extra );
				break;
			}
		}
		return $config;
	}

	/**
	 * Get a merged config for a player.
	 *
	 * @param int  $post_id        Player ID.
	 * @param bool $include_drafts Also resolve draft/pending players (admin preview only).
	 * @return array|null
	 */
	public static function get_config( $post_id, $include_drafts = false ) {
		$post = get_post( $post_id );
		if ( ! $post || self::POST_TYPE !== $post->post_type ) {
			return null;
		}
		if ( 'publish' !== $post->post_status && ( ! $include_drafts || ! in_array( $post->post_status, array( 'draft', 'pending', 'private', 'future' ), true ) ) ) {
			return null;
		}
		$config       = get_post_meta( $post_id, '_streamsera_config', true );
		$config       = streamsera_sanitize_player_config( is_array( $config ) ? $config : array() );
		$config['id'] = $post_id;

		/**
		 * Filter the resolved player config.
		 *
		 * @param array $config  Config.
		 * @param int   $post_id Player ID.
		 */
		return apply_filters( 'streamsera_player_config', $config, $post_id );
	}
}