<?php
namespace FileBird\Model;

defined( 'ABSPATH' ) || exit;

class Folder {

	private static $folder_table   = 'fbv';
	private static $relation_table = 'fbv_attachment_folder';

	public static function allFolders( $select = '*', $prepend_default = null, $order_by = null ) {
		//TODO need to convert ord to number using +0
		global $wpdb;

		$where = array( 'created_by' => apply_filters( 'fbv_in_not_in_created_by', '0' ) );
		if ( \is_null( $order_by ) ) {
			$order_by = 'ord+0, id, name';
		}
		$order_by = apply_filters( 'fbv_order_by', $order_by );

		$conditions = array( '1 = 1' );
		foreach ( $where as $field => $value ) {
			$conditions[] = "`$field` = " . $value;
		}
		$conditions = implode( ' AND ', $conditions );
		$sql        = "SELECT $select FROM " . self::getTable( self::$folder_table ) . ' WHERE ' . $conditions . ' ORDER BY ' . $order_by;

		$folders = $wpdb->get_results( $sql );
		if ( is_array( $prepend_default ) ) {
			$all                        = new \stdClass();
			$all->{$prepend_default[0]} = -1;
			$all->{$prepend_default[1]} = __( 'All Folders', 'filebird' );

			$uncategorized                        = new \stdClass();
			$uncategorized->{$prepend_default[0]} = 0;
			$uncategorized->{$prepend_default[1]} = __( 'Uncategorized', 'filebird' );

			array_unshift( $folders, $all, $uncategorized );
		}
		return $folders;
	}
	public static function countFolder() {
		global $wpdb;
		return $wpdb->get_var( 'SELECT count(*) as c FROM ' . self::getTable( self::$folder_table ) );
	}
	public static function getRelations() {
		global $wpdb;
		$query     = "SELECT `attachment_id`, GROUP_CONCAT(`folder_id`) as folders FROM `{$wpdb->prefix}fbv_attachment_folder` GROUP BY `attachment_id`";
		$relations = $wpdb->get_results( $query );
		$res       = array();
		foreach ( $relations as $k => $v ) {
			$res[ $v->attachment_id ] = array_map( 'intval', explode( ',', $v->folders ) );
		}
		return $res;
	}
	public static function updateOrdAndParent( $id, $new_ord, $new_parent ) {
		global $wpdb;
		$wpdb->update(
			self::getTable( self::$folder_table ),
			array(
				'parent' => $new_parent,
				'ord'    => $new_ord,
			),
			array( 'id' => $id ),
			array( '%d', '%d' ),
			array( '%d' )
		);
	}
	public static function rawInsert( $query ) {
		global $wpdb;
		$wpdb->query( 'INSERT INTO ' . self::getTable( self::$folder_table ) . ' ' . $query );
	}
	public static function getFoldersOfPost( $post_id ) {
		global $wpdb;
		return $wpdb->get_col( 'SELECT `folder_id` FROM ' . self::getTable( self::$relation_table ) . ' WHERE `attachment_id` = ' . (int) $post_id . ' GROUP BY `folder_id`' );
	}
	public static function getFolderFromPostId( $post_id ) {
		global $wpdb;

		$created = 0;
		$user_has_own_folder = get_option( 'njt_fbv_folder_per_user', '0' ) === '1';
		if ( $user_has_own_folder ) {
			$created = get_current_user_id();
		}
		return $wpdb->get_results(
            $wpdb->prepare(
                "SELECT `folder_id`,`name` FROM {$wpdb->prefix}fbv as fbv
				JOIN {$wpdb->prefix}fbv_attachment_folder as fbva ON fbv.id = fbva.folder_id
				WHERE `attachment_id` = %d AND `created_by` = %d GROUP BY `folder_id`",
			$post_id, $created
			),
            OBJECT
            );
	}
	public static function setFoldersForPosts( $post_ids, $folder_ids, $has_action = true ) {
		global $wpdb;
		if ( ! is_array( $post_ids ) ) {
			$post_ids = array( $post_ids );
		}
		if ( ! is_array( $folder_ids ) ) {
			$folder_ids = array( $folder_ids );
		}

		foreach ( $folder_ids as $k => $folder_id ) {
			foreach ( $post_ids as $k2 => $post_id ) {
				do_action( 'fbv_before_setting_folder', (int) $post_id, (int) $folder_id );
				if ( $folder_id > 0 ) {
					$wpdb->insert(
						self::getTable( self::$relation_table ),
						array(
							'attachment_id' => (int) $post_id,
							'folder_id'     => (int) $folder_id,
						),
						array( '%d', '%d' )
					);
				}
				if ( $has_action === true ) {
					do_action( 'fbv_after_set_folder', $post_id, $folder_id );
				}
			}
		}
		if(count($post_ids) > 0) {
			clean_post_cache( $post_ids[0] );
		}
	}
	public static function detail( $name, $parent ) {
		global $wpdb;

		$user_has_own_folder = get_option( 'njt_fbv_folder_per_user', '0' ) === '1';
		if ( $user_has_own_folder ) {
			$created = get_current_user_id();
		} else {
			$created = 0;
		}
		return $wpdb->get_row(
			$wpdb->prepare(
				"SELECT * FROM {$wpdb->prefix}fbv WHERE `name` = %s AND `parent` = %d AND `created_by` = %d",
				$name,
				$parent,
				$created
			)
		);
	}
	public static function findById( $folder_id, $select = 'id' ) {
		global $wpdb;
		$query = 'SELECT ' . $select . ' FROM ' . self::getTable( self::$folder_table ) . " WHERE `id` = '" . (int) $folder_id . "'";
		return $wpdb->get_row( $query );
	}
	public static function updateFolderName( $new_name, $parent, $folder_id ) {
		global $wpdb;
		$check_name = $wpdb->get_row(
			$wpdb->prepare(
				"SELECT * FROM {$wpdb->prefix}fbv WHERE id != %d AND name = %s AND parent = %d",
				$folder_id,
				$new_name,
				$parent
			)
		);
		if ( \is_null( $check_name ) ) {
			$wpdb->update(
				self::getTable( self::$folder_table ),
				array( 'name' => $new_name ),
				array( 'id' => $folder_id ),
				array( '%s' ),
				array( '%d' )
			);
			return true;
		}
		return false;
	}
	public static function updateParent( $folder_id, $new_parent ) {
		global $wpdb;
		$wpdb->update(
			self::getTable( self::$folder_table ),
			array( 'parent' => $new_parent ),
			array( 'id' => $folder_id ),
			array( '%d' ),
			array( '%d' )
		);
	}
	public static function deleteAll() {
		global $wpdb;
		$wpdb->query( "DELETE FROM {$wpdb->prefix}fbv" );
		$wpdb->query( "DELETE FROM {$wpdb->prefix}fbv_attachment_folder" );
	}
	public static function deleteFolderAndItsChildren( $id ) {
		global $wpdb;
		$wpdb->delete( self::getTable( self::$folder_table ), array( 'id' => $id ), array( '%d' ) );
		$wpdb->delete( self::getTable( self::$relation_table ), array( 'folder_id' => $id ), array( '%d' ) );

		//delete it's children
		$children = $wpdb->get_col( $wpdb->prepare( "SELECT id FROM {$wpdb->prefix}fbv WHERE parent = %d", $id ) );
		foreach ( $children as $k => $child ) {
			self::deleteFolderAndItsChildren( $child );
		}
	}
	public static function newFolder( $name, $parent = 0 ) {
		global $wpdb;
		$data = apply_filters(
			'fbv_data_before_inserting_folder',
			array(
				'name'   => $name,
				'parent' => $parent,
				'type'   => 0,
			)
		);
		$wpdb->insert( self::getTable( self::$folder_table ), $data );
		return $wpdb->insert_id;
	}
	public static function newOrGet( $name, $parent, $return_id_if_exist = true ) {
		$check = self::detail( $name, $parent );
		if ( is_null( $check ) ) {
			return self::newFolder( $name, $parent );
		} else {
			return $return_id_if_exist ? (int) $check->id : false;
		}
	}
	public static function deleteFoldersOfPost( $post_id ) {
		global $wpdb;
		$wpdb->delete(
			self::getTable( self::$relation_table ),
			array( 'attachment_id' => $post_id ),
			array( '%d' )
		);
	}

	public static function getChildrenOfFolder( $folder_id, $index = 0 ) {
		global $wpdb;
		$detail = null;
		if ( $index == 0 ) {
			$detail = $wpdb->get_results( 'SELECT name, id FROM ' . $wpdb->prefix . 'fbv WHERE id = ' . (int) $folder_id );
		}
		$children = $wpdb->get_results( 'SELECT name, id FROM ' . $wpdb->prefix . 'fbv WHERE parent = ' . (int) $folder_id );
		foreach ( $children as $k => $v ) {
			$children[ $k ]->children = self::getChildrenOfFolder( $v->id, $index + 1 );
		}
		if ( $detail != null ) {
			$return           = new \stdClass();
			$return->id       = $detail[0]->id;
			$return->name     = $detail[0]->name;
			$return->children = $children;

			return $return;
		}
		return $children;
	}

	private static function getTable( $table ) {
		global $wpdb;
		return $wpdb->prefix . $table;
	}

	public static function getRelationsWithFolderUser( $clauses ) {
		global $wpdb;

		$attachment_in_folder = $wpdb->prepare(
			"SELECT attachment_id 
      FROM {$wpdb->prefix}fbv_attachment_folder AS fbva
      JOIN {$wpdb->prefix}fbv AS fbv ON fbva.folder_id = fbv.id
      GROUP BY attachment_id
      HAVING FIND_IN_SET(%d, GROUP_CONCAT(created_by))",
			apply_filters( 'fbv_in_not_in_created_by', 0 )
		);

		$clauses['where'] .= " AND {$wpdb->posts}.ID NOT IN ($attachment_in_folder) ";

		return $clauses;
	}
}
