//
// Copyright 2017-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License").
// You may not use this file except in compliance with the License.
// A copy of the License is located at
//
// http://aws.amazon.com/apache2.0
//
// or in the "license" file accompanying this file. This file 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

typealias AWSAsyncBlockDoneClosure = () -> Void
typealias AWSAsyncBlockClosure = (@escaping AWSAsyncBlockDoneClosure) -> Void

class AWSAsyncBlockOperation: AWSAsyncOperation {
    private let asyncBlock: AWSAsyncBlockClosure

    init(asyncBlock: @escaping AWSAsyncBlockClosure) {
        self.asyncBlock = asyncBlock
        super.init()
    }

    override func main() {
        let done: AWSAsyncBlockDoneClosure = { [weak self] in
            guard let self = self else { fatalError() }
            self.finish()
        }

        asyncBlock(done)
    }
}