<?php

/**
 * Class Opalestate_Rating_Helper
 */
class Opalestate_Rating_Helper {
	public static function get_average_rating( $comment, $cpt_feature ) {
		$features = static::get_features( $cpt_feature );
		if ( $features ) {
			$sum = 0;
			foreach ( $features as $feature_slug => $feature_title ) {
				$sum += absint( get_comment_meta( $comment->comment_ID, $cpt_feature . '_' . $feature_slug, true ) );
			}

			$average = number_format( $sum / count( $features ), 1 );
		} else {
			$average = absint( get_comment_meta( $comment->comment_ID, 'opalestate_rating', true ) );
		}

		return $average;
	}

	/**
	 * Get property rating for a property. Please note this is not cached.
	 *
	 * @return float
	 */
	public static function get_average_rating_for_post( $post_id, $cpt_feature ) {
		$comments = get_comments( [ 'post_id' => $post_id, 'status' => 'approve' ] );
		if ( ! $comments ) {
			return 0;
		}

		$sum = 0;
		foreach ( $comments as $comment ) {
			$sum += static::get_average_rating( $comment, $cpt_feature );
		}

		return number_format( $sum / static::get_review_count_for_post( $post_id ), 2 );
	}

	/**
	 * Get property review count for a property (not replies). Please note this is not cached.
	 */
	public static function get_review_count_for_post( $post_id ) {
		global $wpdb;

		$count = $wpdb->get_var(
			$wpdb->prepare(
				"
			SELECT COUNT(*) FROM $wpdb->comments
			WHERE comment_parent = 0
			AND comment_post_ID = %d
			AND comment_approved = '1'
				",
				$post_id
			)
		);

		return $count;
	}

	/**
	 * Get property rating count for a property. Please note this is not cached.
	 */
	public static function get_rating_counts_for_post( $post_id, $cpt_feature ) {
		$features = static::get_features( $cpt_feature );
		if ( $features ) {
			return static::get_review_count_for_post( $post_id ) * count( $features );
		}

		return static::get_review_count_for_post( $post_id );
	}

	public static function get_rating_count_stats_for_post( $post_id, $cpt_feature ) {
		$output = [
			5 => 0,
			4 => 0,
			3 => 0,
			2 => 0,
			1 => 0,
		];

		$features = static::get_features( $cpt_feature );

		for ( $i = 5; $i >= 1; $i-- ) {
			$args = [
				'post_id' => $post_id,
				'count'   => true,
				'status' => 'approve',
			];

			if ( $features ) {
				$features_query = [];
				foreach ( $features as $feature_slug => $feature_title ) {
					$features_query[] = [
						'key'   => $cpt_feature . '_' . $feature_slug,
						'value' => $i,
					];
				}
				$args['meta_query']             = $features_query;
				$args['meta_query']['relation'] = 'OR';
			} else {
				$args['meta_query'] = [
					[
						'key'   => 'opalestate_rating',
						'value' => $i,
					],
				];
			}

			$output[ $i ] = get_comments( $args );
		}

		return $output;
	}

	public static function get_rating_average_stats_by_features_for_post( $post_id, $cpt_feature, $meta_prefix ) {
		global $wpdb;

		$output   = [];
		$count    = get_post_meta( $post_id, $meta_prefix . 'review_count', true );
		$features = static::get_features( $cpt_feature );

		if ( ! $features || ! $count ) {
			return $output;
		}

		foreach ( $features as $feature_slug => $feature_title ) {
			$meta_key = $cpt_feature . '_' . $feature_slug;

			$ratings                 = $wpdb->get_var(
				$wpdb->prepare(
					"
				SELECT SUM(meta_value) FROM $wpdb->commentmeta
				LEFT JOIN $wpdb->comments ON $wpdb->commentmeta.comment_id = $wpdb->comments.comment_ID
				WHERE meta_key = %s
				AND comment_post_ID = %d
				AND comment_approved = '1'
				AND meta_value > 0
					",
					$meta_key,
					$post_id
				)
			);
			$average                 = number_format( $ratings / $count, 2, '.', '' );
			$output[ $feature_slug ] = $average;
		}

		return $output;
	}

	public static function get_features( $cpt_feature, $posts_per_page = -1 ) {
		$args = [
			'post_type'      => $cpt_feature,
			'post_status'    => 'publish',
			'posts_per_page' => $posts_per_page,
			'order'          => 'ASC',
			'orderby'        => 'meta_value_num',
			'meta_key'       => 'opalestate_feature_order',
		];

		$features = get_posts( $args );

		return wp_list_pluck( $features, 'post_title', 'post_name' );
	}
}

new Opalestate_Rating_Helper();