<?php

require_once VPHQ_ROOT . '/server-blocks/class.videopress-hq-server-block.php';

class VideoPressHQBlockVideoQueryLoop extends VideoPressHQServerBlock {

	private const JS_SCRIPT_KEY = 'videopress-hq-video-query-loop-js';

	protected function get_block_name(): string {
		return 'video-query-loop';
	}

	protected function get_view_name(): string {
		return '';
	}

	protected function register_scripts_and_styles() {
		wp_register_script( self::JS_SCRIPT_KEY, $this->block_asset_uri( 'index.js' ) );
	}

	protected function get_block_register_params(): array {
		return array(
			'editor_script_handles' => array( self::JS_SCRIPT_KEY ),
		);
	}

	public static function register() {
		$instance = new static();

		$instance->register_scripts_and_styles();

		$register_params = $instance->get_block_register_params();

		register_block_type( 'videopress-hq/' . $instance->get_block_name(), $register_params );

		add_filter( 'query_loop_block_query_vars', array( $instance, 'query_loop_block_query_vars' ), 10, 2 );
	}

	public function query_loop_block_query_vars( $query, $block ) {
		$post_type = $block->context['query']['postType'] ?? '';
		if ( 'vp_video' !== $post_type ) {
			return $query;
		}

		$order_by      = $block->context['query']['orderBy'] ?? '';
		$playlist_slug = $block->context['query']['playlist'] ?? '';

		if ( 'playlist' === $order_by && ! empty( $playlist_slug ) ) {
			$playlist = VideoPressHQPlaylist::get_by_slug( $playlist_slug );
			if ( $playlist && $playlist->is_visible_to_current_user() ) {
				$playlist_query = $playlist->get_posts_query_params();
				$query['tax_query']  = $playlist_query['tax_query'];
				$query['meta_query'] = $playlist_query['meta_query'];
				$query['orderby']    = $playlist_query['orderby'];
				$query['order']      = $playlist_query['order'];
			}
		}

		$use_featured_video     = $block->context['query']['useFeaturedVideo'] ?? false;
		$exclude_featured_video = $block->context['query']['excludeFeaturedVideo'] ?? false;

		if ( ! $use_featured_video && ! $exclude_featured_video ) {
			return $query;
		}

		$currently_featured_video = get_option( 'videopress_hq_featured_video' );
		$featured_post            = null;

		if ( ! empty( $currently_featured_video ) ) {
			$featured_post = get_post( $currently_featured_video );
			if ( 'vp_video' !== $featured_post->post_type ) {
				$featured_post = null;
			}
		}

		if ( $use_featured_video ) {
			if ( $featured_post ) {
				$query['p'] = $featured_post->ID;
			}
		} elseif ( $featured_post ) {
			$query['post__not_in'] = array( $featured_post->ID );
		} else {
			$query['offset'] = 1;
		}

		return $query;
	}

}