//
// Created by qiuwenchen on 2022/9/13.
//

/*
 * Tencent is pleased to support the open source community by making
 * WCDB available.
 *
 * Copyright (C) 2017 THL A29 Limited, a Tencent company.
 * All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 *       https://opensource.org/licenses/BSD-3-Clause
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import Foundation
import WCDB_Private

/// Convenient interface for deleting
public protocol DeleteInterface: AnyObject {

    /// Execute deleting
    ///
    /// - Parameters:
    ///   - table: Table name
    ///   - condition: Expression convertible
    ///   - orderList: Order convertible list
    ///   - limit: Expression convertible
    ///   - offset: Expression convertible
    /// - Throws: `Error`
    func delete(fromTable table: String,
                where condition: Condition?,
                orderBy orderList: [OrderBy]?,
                limit: Limit?,
                offset: Offset?) throws
}

extension DeleteInterface where Self: HandleRepresentable {
    public func delete(fromTable table: String,
                       where condition: Condition? = nil,
                       orderBy orderList: [OrderBy]? = nil,
                       limit: Limit? = nil,
                       offset: Offset? = nil) throws {
        let delete = Delete(with: try getHandle(writeHint: true), andTableName: table)
        if condition != nil {
            delete.where(condition!)
        }
        if orderList != nil {
            delete.order(by: orderList!)
        }
        if limit != nil {
            if offset != nil {
                delete.limit(limit!, offset: offset!)
            } else {
                delete.limit(limit!)
            }
        }
        return try delete.execute()
    }
}
