<?php
/**
 * @author : Jegtheme
 */

namespace JNews\Module;

/**
 * Class JNews Query
 */
Class ModuleQuery {
	private static $cache_thumbnail = array();

	/**
	 * @param $attr
	 *
	 * @return array
	 */
	public static function do_query( $attr ) {
		$attr       = self::unset_unnecessary( $attr );
		$query_hash = 'query_hash_' . md5( serialize( $attr ) );
		$result     = get_theme_mod( 'jnews_query_option_enable', true ) ? wp_cache_get( $query_hash, 'jnews' ) : false;

		if ( ! $result ) {
			if ( isset( $attr['sort_by'] ) ) {
				if ( $attr['sort_by'] === 'most_comment_day' ||
					 $attr['sort_by'] === 'most_comment_week' ||
					 $attr['sort_by'] === 'most_comment_month' ||
					 $attr['sort_by'] === 'popular_post_day' ||
					 $attr['sort_by'] === 'popular_post' ||
					 $attr['sort_by'] === 'popular_post_week' ||
					 $attr['sort_by'] === 'popular_post_month' ) {
					$result = self::custom_query( $attr );
				} elseif (
					$attr['sort_by'] === 'popular_post_jetpack_day' ||
					$attr['sort_by'] === 'popular_post_jetpack_week' ||
					$attr['sort_by'] === 'popular_post_jetpack_month' ||
					$attr['sort_by'] === 'popular_post_jetpack_all' ) {
					$result = self::jetpack_query( $attr );
				} else {
					$result = self::default_query( $attr );
				}
			} else {
				$result = self::default_query( $attr );
			}

			wp_cache_set( $query_hash, $result, 'jnews' );

			// need to optimize query
			self::optimize_query( $result );
		}

		return $result;
	}

	private static function unset_unnecessary( $attr ) {
		$accepted = array(
			'post_type',
			'number_post',
			'post_offset',
			'include_post',
			'exclude_post',
			'include_category',
			'exclude_category',
			'include_author',
			'include_tag',
			'exclude_tag',
			'sort_by',
			'paged',
			'video_only',
			'content_type',
			'pagination_number_post',
			'pagination_mode',
			'date_query',
			'lang',
			's',
		);

		$accepted = apply_filters( 'jnews_unset_unnecessary_attr', $accepted, $attr );

		foreach ( $attr as $key => $value ) {
			if ( ! in_array( $key, $accepted ) ) {
				unset( $attr[ $key ] );
			}
		}

		if ( isset( $attr['pagination_number_post'] ) ) {
			$attr['pagination_number_post'] = intval( $attr['pagination_number_post'] );
		}

		if ( isset( $attr['paged'] ) ) {
			$attr['paged'] = intval( $attr['paged'] );
		}

		if ( isset( $attr['number_post']['size'] ) ) {
			$attr['number_post'] = $attr['number_post']['size'];
		}

		return $attr;
	}

	/**
	 * @param $result
	 */
	private static function optimize_query( $result ) {
		self::cache_thumbnail( $result );
	}

	/**
	 * @param $results
	 */
	public static function cache_thumbnail( $results ) {
		$thumbnails = array();

		foreach ( $results['result'] as $result ) {
			if ( ! in_array( $result->ID, self::$cache_thumbnail ) ) {
				$thumbnails[]            = get_post_thumbnail_id( $result->ID );
				self::$cache_thumbnail[] = $result->ID;
			}
		}

		if ( ! empty( $thumbnails ) ) {
			$query = array(
				'post__in'  => $thumbnails,
				'post_type' => 'attachment',
				'showposts' => count( $thumbnails )
			);

			get_posts( $query );
		}
	}

	/**
	 * Jetpack Query
	 *
	 * @param $attr
	 *
	 * @return array
	 */
	private static function jetpack_query( $attr ) {
		$result = array();

		if ( function_exists( 'stats_get_csv' ) ) {
			switch ( $attr['sort_by'] ) {
				case 'popular_post_jetpack_week':
					$days = 7;
					break;
				case 'popular_post_jetpack_month':
					$days = 30;
					break;
				case 'popular_post_jetpack_day' :
					$days = 2;
					break;
				case 'popular_post_jetpack_all':
				default:
					$days = - 1;
					break;
			}

			$top_posts = stats_get_csv( 'postviews', array( 'days' => $days, 'limit' => $attr['number_post'] + 5 ) );

			if ( ! $top_posts ) {
				return array();
			}

			$counter = 0;
			foreach ( $top_posts as $post ) {
				$the_post = get_post( $post['post_id'] );

				if ( ! $the_post ) {
					continue;
				}
				if ( 'post' != $the_post->post_type ) {
					continue;
				}

				$counter ++;
				$result[] = get_post( $post['post_id'] );

				if ( $counter == $attr['number_post'] ) {
					break;
				}
			}
		}

		return array(
			'result'     => $result,
			'next'       => false,
			'prev'       => false,
			'total_page' => 1
		);

	}

	/**
	 * WordPress Default Query
	 *
	 * @param $attr
	 *
	 * @return array
	 */
	private static function default_query( $attr ) {
		$include_category = $exclude_category = $result = $args = array();

		$attr['number_post']            = isset( $attr['number_post'] ) ? $attr['number_post'] : get_option( 'posts_per_page' );
		$attr['pagination_number_post'] = isset( $attr['pagination_number_post'] ) ? $attr['pagination_number_post'] : $attr['number_post'];

		// Argument
		$args['post_type']           = isset ( $attr['post_type'] ) ? $attr['post_type'] : 'post';
		$args['paged']               = isset ( $attr['paged'] ) ? $attr['paged'] : 1;
		$args['offset']              = self::calculate_offset( $args['paged'], $attr['post_offset'], $attr['number_post'], $attr['pagination_number_post'] );
		$args['posts_per_page']      = ( $args['paged'] > 1 ) ? $attr['pagination_number_post'] : $attr['number_post'];
		$args['no_found_rows']       = ! isset( $attr['pagination_mode'] ) || $attr['pagination_mode'] === 'disable';
		$args['ignore_sticky_posts'] = 1;

		if ( ! empty( $attr['exclude_post'] ) ) {
			$args['post__not_in'] = explode( ',', $attr['exclude_post'] );
		}

		if ( ! empty( $attr['include_category'] ) ) {
			$categories = explode( ',', $attr['include_category'] );
			self::recursive_category( $categories, $include_category );
			$args['category__in'] = $include_category;
		}

		if ( ! empty( $attr['exclude_category'] ) ) {
			$categories = explode( ',', $attr['exclude_category'] );
			self::recursive_category( $categories, $exclude_category );
			$args['category__not_in'] = $exclude_category;
		}

		if ( ! empty( $attr['include_author'] ) ) {
			$args['author__in'] = explode( ',', $attr['include_author'] );
		}

		if ( ! empty( $attr['include_tag'] ) ) {
			$args['tag__in'] = explode( ',', $attr['include_tag'] );
		}

		if ( ! empty( $attr['exclude_tag'] ) ) {
			$args['tag__not_in'] = explode( ',', $attr['exclude_tag'] );
		}

		// order
		if ( isset( $attr['sort_by'] ) ) {
			if ( 'latest' === $attr['sort_by'] ) {
				$args['orderby'] = 'date';
				$args['order']   = 'DESC';
			}

			if ( 'latest_modified' === $attr['sort_by'] ) {
				$args['orderby'] = 'modified';
				$args['order']   = 'DESC';
			}

			if ( 'oldest' === $attr['sort_by'] ) {
				$args['orderby'] = 'date';
				$args['order']   = 'ASC';
			}

			if ( 'oldest_modified' === $attr['sort_by'] ) {
				$args['orderby'] = 'modified';
				$args['order']   = 'ASC';
			}

			if ( 'alphabet_asc' === $attr['sort_by'] ) {
				$args['orderby'] = 'title';
				$args['order']   = 'ASC';
			}

			if ( 'alphabet_desc' === $attr['sort_by'] ) {
				$args['orderby'] = 'title';
				$args['order']   = 'DESC';
			}

			if ( 'random' === $attr['sort_by'] ) {
				$args['orderby'] = 'rand';
			}

			if ( 'random_week' === $attr['sort_by'] ) {
				$args['orderby']    = 'rand';
				$args['date_query'] = array(
					array(
						'after' => '1 week ago'
					)
				);
			}

			if ( 'random_month' === $attr['sort_by'] ) {
				$args['orderby']    = 'rand';
				$args['date_query'] = array(
					array(
						'after' => '1 month ago'
					)
				);
			}

			if ( 'most_comment' === $attr['sort_by'] ) {
				$args['orderby'] = array(
					'comment_count' => 'DESC',
					'ID'            => 'ASC',
				);
			}

			if ( 'rate' === $attr['sort_by'] ) {
				$args['orderby']    = 'meta_value_num';
				$args['meta_key']   = 'jnew_rating_mean';
				$args['order']      = 'DESC';
				$args['meta_query'] = array(
					'relation' => 'AND',
					array(
						'key'   => 'enable_review',
						'value' => '1',
					),
					array(
						'key'     => 'jnew_rating_mean',
						'value'   => '0',
						'compare' => '>',
					),
				);
			}

			if ( 'share' === $attr['sort_by'] ) {
				$args['orderby']  = 'meta_value_num';
				$args['meta_key'] = 'jnews_social_counter_total';
				$args['order']    = 'DESC';
			}

			if ( 'like' === $attr['sort_by'] ) {
				$args['orderby']  = 'meta_value_num';
				$args['meta_key'] = 'jnews_like_counter';
				$args['order']    = 'DESC';
			}

			if ( 'post__in' === $attr['sort_by'] ) {
				$args['orderby'] = 'post__in';
			}
		}

		// TODO : fix kalau hanya lihat post
		if ( isset( $attr['content_type'] ) ) {
			if ( $attr['content_type'] === 'all' ) {
				// do nothing
			}

			if ( $attr['content_type'] === 'post' ) {
				add_filter( 'posts_join', array( __CLASS__, 'join_only_post' ) );
				add_filter( 'posts_where', array( __CLASS__, 'where_only_post' ) );
			}

			if ( $attr['content_type'] === 'review' ) {
				$args['meta_query'] = array(
					array(
						'key'   => 'enable_review',
						'value' => '1'
					)
				);
			}
			if ( $attr['content_type'] === 'video' ) {
				$attr['video_only'] = true;
			}
		}

		if ( isset( $attr['video_only'] ) && $attr['video_only'] === true ) {
			$args['tax_query'] = array(
				array(
					'taxonomy' => 'post_format',
					'field'    => 'slug',
					'terms'    => array(
						'post-format-video'
					),
					'operator' => 'IN'
				)
			);
		}

		// search
		if ( isset( $attr['s'] ) ) {
			$args['s'] = $attr['s'];
		}

		// date
		if ( isset( $attr['date_query'] ) ) {
			$args['date_query'] = $attr['date_query'];
		}

		if ( class_exists( 'Polylang' ) ) {
			if ( isset( $attr['lang'] ) ) {
				$args['lang'] = $attr['lang'];
			}
		}

		// co author guest author
		if ( class_exists( 'CoAuthors_Plus' ) && ! empty( $args['author__in'] ) ) {
			global $coauthors_plus;
			if ( $guest = $coauthors_plus->guest_authors->get_guest_author_by( 'ID', $args['author__in'][0] ) ) {
				$args['author_name'] = $guest->user_nicename;
				unset( $args['author__in'] );
			}
		}

		$args = apply_filters( 'jnews_default_query_args', $args, $attr );

		// Query
		$query = new \WP_Query( $args );

		if ( ! empty( $attr['include_post'] ) ) {
			$args['orderby']='post__in';
			$args['post__in'] = explode( ',', $attr['include_post'] );
			$unset = array(
				'category__in',
				'category__not_in',
				'author__in',
				'tag__in',
				'tag__not_in',
				'date_query',
				'tax_query',
				'meta_query',
				'lang',
			);

			foreach ( $query->posts as $post ) {
				$args['post__in'][] = $post->ID;
			}

			foreach ( $unset as $remove ) {
				unset( $args[$remove] );
			}

			$query = new \WP_Query( $args );
		}

		foreach ( $query->posts as $post ) {
			$result[] = $post;
		}

		wp_reset_postdata();

		if ( isset( $attr['content_type'] ) && $attr['content_type'] === 'post' ) {
			jnews_remove_filters( 'posts_join', array( __CLASS__, 'join_only_post' ) );
			jnews_remove_filters( 'posts_where', array( __CLASS__, 'where_only_post' ) );
		}

		return array(
			'result'     => $result,
			'next'       => self::has_next_page( $query->found_posts, $args['paged'], $args['offset'], $attr['number_post'], $attr['pagination_number_post'] ),
			'prev'       => self::has_prev_page( $args['paged'] ),
			'total_page' => self::count_total_page( $query->found_posts, $args['paged'], $args['offset'], $attr['number_post'], $attr['pagination_number_post'] )
		);
	}

	public static function join_only_post( $clause = '' ) {
		return $clause;
	}

	public static function where_only_post( $clause = '' ) {
		global $wpdb;

		$enable_review_key   = 'enable_review';
		$enable_review_value = '1';
		$post_type           = 'post';
		$post_status         = 'publish';

		$clause .=
			$wpdb->prepare( "AND {$wpdb->posts}.ID NOT IN (
                SELECT {$wpdb->posts}.ID
                    FROM {$wpdb->posts}
                    INNER JOIN {$wpdb->postmeta}
                    ON  {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id
                    WHERE
                    {$wpdb->postmeta}.meta_key = %s                    
                    AND {$wpdb->postmeta}.meta_value = %s
                    AND {$wpdb->posts}.post_type = %s
                AND {$wpdb->posts}.post_status = %s
            )", $enable_review_key, $enable_review_value, $post_type, $post_status );

		return $clause;
	}


	/**
	 * JNews View Counter Query
	 *
	 * @param $attr
	 *
	 * @return array
	 */
	private static function custom_query( $attr ) {
		if ( function_exists( 'jnews_view_counter_query' ) ) {
			$exclude_category = $include_category = $args = array();
			// Argument
			$args['post_type']     = isset( $attr['post_type'] ) ? $attr['post_type'] : 'post';
			$args['paged']         = isset ( $attr['paged'] ) ? $attr['paged'] : 1;
			$args['offset']        = self::calculate_offset( $args['paged'], $attr['post_offset'], $attr['number_post'], $attr['pagination_number_post'] );
			$args['limit']         = ( $args['paged'] > 1 ) ? $attr['pagination_number_post'] : $attr['number_post'];
			$args['no_found_rows'] = ! isset( $attr['pagination_mode'] ) || $attr['pagination_mode'] === 'disable';

			if ( ! empty( $attr['include_post'] ) ) {
				$args['include_post'] = $attr['include_post'];
			}

			if ( ! empty( $attr['exclude_post'] ) ) {
				$args['exclude_post'] = $attr['exclude_post'];
			}


			if ( ! empty( $attr['include_category'] ) ) {
				$categories = explode( ',', $attr['include_category'] );
				self::recursive_category( $categories, $include_category );
				$args['include_category'] = implode( ',', $include_category );
			}

			if ( ! empty( $attr['exclude_category'] ) ) {
				$categories = explode( ',', $attr['exclude_category'] );
				self::recursive_category( $categories, $exclude_category );
				$args['exclude_category'] = implode( ',', $exclude_category );
			}

			if ( ! empty( $attr['include_author'] ) ) {
				$args['author'] = $attr['include_author'];
			}

			if ( ! empty( $attr['include_tag'] ) ) {
				$args['include_tag'] = $attr['include_tag'];
			}

			if ( ! empty( $attr['exclude_tag'] ) ) {
				$args['exclude_tag'] = $attr['exclude_tag'];
			}

			if ( $attr['sort_by'] === 'most_comment_day' || $attr['sort_by'] === 'most_comment_week' || $attr['sort_by'] === 'most_comment_month' ) {
				$args['order_by'] = 'comments';
			} else {
				$args['order_by'] = 'views';
			}

			if ( $attr['sort_by'] === 'most_comment_day' || $attr['sort_by'] === 'popular_post_day' ) {
				$args['range'] = 'daily';
			}

			if ( $attr['sort_by'] === 'most_comment_week' || $attr['sort_by'] === 'popular_post_week' ) {
				$args['range'] = 'weekly';
			}

			if ( $attr['sort_by'] === 'most_comment_month' || $attr['sort_by'] === 'popular_post_month' ) {
				$args['range'] = 'monthly';
			}

			if ( $attr['sort_by'] === 'popular_post' ) {
				$args['range'] = 'all';
			}

			if ( ( isset( $attr['video_only'] ) && $attr['video_only'] ) || ( isset( $attr['content_type'] ) && 'video' === $attr['content_type'] ) ) {
				$args['post_format'] = 'post-format-video';
			}

			if ( isset( $attr['content_type'] ) ) {
				if ('review' === $attr['content_type'] || 'post' === $attr['content_type']) {
					$args['content_type'] = $attr['content_type'];
				}
			}

			return self::custom_jnews_query( $args, $attr );
		}
		return array(
			'result'     => array(),
			'next'       => false,
			'prev'       => false,
			'total_page' => 1
		);

	}

	private static function recursive_category( $categories, &$result ) {
		foreach ( $categories as $category ) {
			if ( ! in_array( $category, $result ) ) {
				$result[] = $category;
				$children = get_categories( array( 'parent' => $category ) );

				if ( ! empty( $children ) ) {
					$child_id = array();
					foreach ( $children as $child ) {
						$child_id[] = $child->term_id;
					}
					self::recursive_category( $child_id, $result );
				}
			}
		}
	}

	/**
	 * Calculate Offset
	 *
	 * @param $paged
	 * @param $offset
	 * @param $number_post
	 * @param $number_post_ajax
	 *
	 * @return int
	 */
	private static function calculate_offset( $paged, $offset, $number_post, $number_post_ajax ) {
		$new_offset = 0;

		$offset = (int) ( isset( $offset['size'] ) ? $offset['size'] : $offset );

		if ( $paged == 1 ) {
			$new_offset = $offset;
		}
		if ( $paged == 2 ) {
			$new_offset = $number_post + $offset;
		}
		if ( $paged >= 3 ) {
			$new_offset = $number_post + $offset + ( $number_post_ajax * ( $paged - 2 ) );
		}

		return $new_offset;
	}

	/**
	 * Check if we have next page
	 *
	 * @param $total
	 * @param int $curpage
	 * @param int $offset
	 * @param $perpage
	 * @param $perpage_ajax
	 *
	 * @return bool
	 */
	private static function has_next_page( $total, $curpage = 1, $offset = 0, $perpage = 0, $perpage_ajax = 0) {
		if ( $curpage == 1 ) {
			return (int) $total > (int) $offset + (int) $perpage;
		}

		if ( $curpage > 1 ) {
			return (int) $total > (int) $offset + (int) $perpage_ajax;
		}

		return false;
	}

	/**
	 * Check if we have previous page
	 *
	 * @param int $curpage
	 *
	 * @return bool
	 */
	private static function has_prev_page( $curpage = 1 ) {
		return  $curpage <= 1 ? false : true;
	}

	/**
	 * Get total count of total page
	 *
	 * @param $total
	 * @param $offset
	 * @param $perpage
	 * @param $perpage_ajax
	 *
	 * @return int
	 */
	private static function count_total_page( $total, $curpage = 1, $offset = 0, $perpage = 0, $perpage_ajax = 0) {
		$remain = (int) $total - ( (int) $offset + (int) $perpage );

		if ( $remain > 0 ) {
			while ( $remain > 0 ) {
				$remain  -= $perpage_ajax;
				$curpage += 1;
			}
		}

		return $curpage;
	}

	/**
	 * Custom Query for JNews. Add ability to receive Paging Parameter and Tag Parameter
	 *
	 * @param $instance
	 * @param $attr
	 *
	 * @return array
	 */
	private static function custom_jnews_query( $instance, $attr ) {
		if ( function_exists( 'jnews_view_counter_query' ) ) {
			$query_result = jnews_view_counter_query( $instance );
			return array(
				'result'     => $query_result['result'],
				'next'       => self::has_next_page( $query_result['total'], $instance['paged'], $instance['offset'], $attr['number_post'], $attr['pagination_number_post'] ),
				'prev'       => self::has_prev_page( $instance['paged'] ),
				'total_page' => self::count_total_page( $query_result['total'], $instance['paged'], $instance['offset'], $attr['number_post'], $attr['pagination_number_post'] )
			);

		}
		return array(
			'result'     => '',
			'next'       => false,
			'prev'       => false,
			'total_page' => 0
		);
	}
}
