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

if ( ! class_exists( 'APOP' ) ) {

	class APOP {

		const TEMPLATE_DIR = __DIR__ . '/../template/';

		public function __construct() {
			add_action( 'admin_menu', array( $this, 'add_pages' ) );
		}

		public function add_pages() {
			add_menu_page(
				'APO +',
				'APO +',
				'level_8',
				'apop_post_sort',
				array( $this, 'show_option_page' ),
				'',
				50
			);
			add_submenu_page(
				'apop_post_sort', // parent_slug
				'Select taxonomy', // page_title
				'タクソノミー選択', // menu_title
				'administrator', // capability
				'apop_post_sort_setting', // menu_slug
				array( $this, 'display_setting_page' ) // function
			);
		}

		public function display_setting_page() {
			if ( isset( $_POST['_apop_cat_order'] )
			     || isset( $_POST['_apop_tag_order'] )
			     || isset( $_POST['_apop_tax_order'] ) ) {

				check_admin_referer( 'sh_options' );

				$settings = array(
					'_apop_cat_order', //カテゴリー設定
					'_apop_tag_order', //タグ設定
					'_apop_tax_order', //カスタムタクソノミー設定
				);

				foreach ( $settings as $setting ) {
					$opt = $_POST[ $setting ];
					update_option( $setting, $opt );
				}

				require_once self::TEMPLATE_DIR . 'success.php';

			}

			require_once self::TEMPLATE_DIR . 'setting.php';
		}


		public function show_option_page() {
			//カテゴリーの投稿表示順設定
			if ( isset( $_POST['_apop_post_category'] ) ) {
				check_admin_referer( 'sh_options' );
				$this->update_post_sort( 'category' );
				require_once self::TEMPLATE_DIR . 'success.php';
			}

			//タグの投稿表示順設定
			if ( isset( $_POST['_apop_post_post_tag'] ) ) {
				check_admin_referer( 'sh_options' );
				$this->update_post_sort( 'post_tag' );
				require_once self::TEMPLATE_DIR . 'success.php';
			}

			//カスタム分類の投稿表示順設定
			if ( isset( $_POST['_apop_post_tax'] ) ) {
				check_admin_referer( 'sh_options' );
				$this->update_post_sort( 'tax' );
				require_once self::TEMPLATE_DIR . 'success.php';
			}

			require_once self::TEMPLATE_DIR . 'order.php';
		}

		//投稿表示順の設定
		private function update_post_sort( $target ) {
			$target     = '_apop_post_' . $target;
			$posts_sort = $_POST[ $target ]['post_sort'];
			foreach ( $posts_sort as $cat_id => $posts ) {
				$sort_key = $target . '_' . $cat_id;
				foreach ( $posts as $post_id => $sort ) {
					update_post_meta( $post_id, $sort_key, $sort );
				}
			}
		}

	}

}