// ArchitectureComponents
// Copyright (c) 2017 SPRI, LLC <info@spr.com>. Some rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// 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


public class Transformations {

    // TODO: write tests for this function
    public static func map<X, Y>(source: LiveData<X>, transform: @escaping (X) -> Y) -> LiveData<Y> {
        let transformedLiveData = TransformedLiveData<X, Y>(source: source, transform: transform)
        return transformedLiveData
    }

    // TODO: write tests for this function
    public static func switchMap<X, Y>(trigger: LiveData<X>, transform: @escaping (X) -> LiveData<Y>) -> LiveData<Y> {
        let switchedLiveData = SwitchedLiveData<X, Y>(trigger: trigger, transform: transform)
        return switchedLiveData
    }

    /// Cannot be instantiated.
    private init() { }

}
