POST_ORDER_BY_ARCHIVE/util/apop-order-setting.php

<?php
/*
 *　Todo: タクソノミーの通常＋カスタムフィールドソート処理の追加
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
} // Exit if accessed directly


if ( ! trait_exists( 'APOP_ORDER_SETTING' ) ) {

	trait APOP_ORDER_SETTING {

		public function set_query() {
			add_action( 'pre_get_posts', array( $this, 'apop_posts_per_page' ), 1 );
		}

		public function apop_posts_per_page( $query ) {

			if ( is_admin() || ! $query->is_main_query() ) {
				return;
			}

			if ( is_home() ) {
				$this->set_search_normal_orderby( $query, 'normal' );
			}

			if ( is_search() ) {
				$this->set_search_normal_orderby( $query, 'search' );
			}

			if ( is_category() ) {
				$cat = get_category_by_slug( $query->query_vars['category_name'] );
				if ( isset( $cat->term_id ) ) {
					$this->set_orderby( $query, $cat->term_id, 'category', 'cat' );
				}
			}

			if ( is_tag() ) {
				$tag = get_term_by( 'slug', $query->query_vars['tag'], 'post_tag' );
				if ( isset( $tag->term_id ) ) {
					$this->set_orderby( $query, $tag->term_id, 'post_tag', 'tag' );
				}
			}

			if ( is_tax() ) {
				if ( get_queried_object_id() ) {
					$this->set_orderby( $query, get_queried_object_id(), 'tax', 'tax' );
				}
			}
		}

		private function set_per_page( $query, $target, $id = null ) {
			$per_page_option = get_option( '_apop_per_page' );
			if ( is_null( $id ) ) {
				$per_page_option_data = $per_page_option[ $target ];
			} else {
				$per_page_target      = $target == 'tax' ? 'taxonomy' : $target;
				$per_page_option_data = $per_page_option[ $per_page_target ][ $id ];
			}

			if ( ! isset( $per_page_option_data ) ) {
				return;
			}
			if ( $per_page_option_data == 'default' ) {
				return;
			}
			if ( $per_page_option_data == 'all' ) {
				$target = 'search';
			}

			$query->set( 'posts_per_page', $per_page_option_data );
		}

		private function set_search_normal_orderby( $query, $type ) {
			$apop_order = get_option( '_apop_' . $type . '_order' ) ?? 1;
			if ( $apop_order == 2 ) {
				$query->set( 'orderby', array( 'meta_value_num' => 'ASC' ) );
				$query->set( 'meta_query', self::get_all_post_args( '_apop_post_' . $type ) );
			} else {
				$apop_order_param = get_option( '_apop_' . $type . '_order_param' );
				$sort_param       = array( 1 => 'ASC', 2 => 'DESC' );
				if ( ! $apop_order_param ) {
					return;
				}
				foreach ( $apop_order_param as $order_col => $orders ) {
					if ( $orders['use'] == 1 ) {
						if ( $order_col == 'custom_field' ) {
							$this->set_custom_filed_sort( $orderby, $query, $order_col, $orders, $sort_param );
						} else {
							$orderby[ $order_col ] = $sort_param[ $orders['sort'] ];
						}
					}
				}
				if ( isset( $orderby ) ) {
					$query->set(
						'orderby', $orderby
					);
				}
			}
			$this->set_per_page( $query, 'search' );
		}

		private function set_custom_filed_sort( &$orderby, $query, $order_col, $orders, $sort_param ) {
			if ( $order_col == 'custom_field' ) {
				$meta_key                = $orders['field']['meta_key'];
				$orderby_key             = $orders['field']['value_type'];
				$orderby_sort            = $orders['sort'];
				$orderby[ $orderby_key ] = $sort_param[ $orderby_sort ];
				$query->set( 'meta_query', self::get_all_post_args( $meta_key ) );
			}
		}

		private function set_orderby( $query, $id, $target, $order_key ) {
			$order_settings = get_option( '_apop_' . $order_key . '_order' );
			if ( isset( $order_settings['target_cat'][ $id ] ) && $order_settings['target_cat'][ $id ] == 1 ) {
				$sort_meta_key = '_apop_post_' . $target . '_' . $id;
				$query->set( 'meta_query', self::get_all_post_args( $sort_meta_key ) );
				$query->set( 'orderby', array( 'meta_value_num' => 'ASC' ) );
				$this->set_per_page( $query, self::get_per_page_tag( $target ), $id );
			} else {
				self::set_search_normal_orderby( $query, 'normal' );
			}
		}

		private static function get_per_page_tag( $target ) {
			if ( $target == 'post_tag' ) {
				return 'tag';
			}

			return $target;
		}

		private static function get_all_post_args( $sort_meta_key ): array {
			return array(
				'relation' => 'OR',
				array(
					'key'     => $sort_meta_key,
					'compare' => 'EXISTS',
				),
				array(
					'key'     => $sort_meta_key,
					'compare' => 'NOT EXISTS',
				),
			);
		}

		public static function get_normal_orderby() {
			$apop_order = get_option( '_apop_normal_order' ) ?? 1;
			if ( $apop_order == 2 ) {
				return array(
					'meta_query' => self::get_all_post_args( '_apop_normal_order' ),
					'orderby'    => array( 'meta_value_num' => 'ASC' ),
				);
			} else {
				$apop_order_param = get_option( '_apop_normal_order_param' );
				$sort_param       = array( 1 => 'ASC', 2 => 'DESC' );
				foreach ( $apop_order_param as $order_col => $orders ) {
					if ( $orders['use'] == 1 ) {
						$orderby[ $order_col ] = $sort_param[ $orders['sort'] ];
					}
				}
				if ( isset( $orderby ) ) {
					return array(
						'orderby' => $orderby,
					);
				}
			}

			return null;
		}

		public static function get_tax_orderby( $id, $target, $order_key ) {
			$order_settings = get_option( '_apop_' . $order_key . '_order' );
			if ( isset( $order_settings['target_cat'][ $id ] ) && $order_settings['target_cat'][ $id ] == 1 ) {
				$sort_meta_key = '_apop_post_' . $target . '_' . $id;

				return array(
					'meta_key' => $sort_meta_key,
					'orderby'  => array( 'meta_value_num' => 'ASC' )
				);
			} else {
				return self::get_normal_orderby();
			}

		}

		public static function get_per_page( $target ) {
			$per_page_option = get_option( '_apop_per_page' );
			if ( ! isset( $per_page_option ) ) {
				return;
			}
			if ( $per_page_option == 'default' ) {
				return;
			}

			return array( 'posts_per_page' => $per_page_option );
		}

	}
}