swift-libs/Sources/Communications/Use Cases/MakeURLRequestUseCase.swift
Javier Cicchelli cd47043a30 [Feature] Communications (#4)
This PR constains the work done to define the necessary protocols and enumerations to start defining remote API service as well as an implementation of the `URLProtocol` to mock requests and responses when using the `URLSession` to make remote calls.

To provide further details about this work:
- [x] declared the `Communications` library in the `Package` file;
- [x] defined the minimum Apple platform versions in the `Package` file to support the async/await feature;
- [x] defined the `HTTPRequestMethod` and `HTTPResponseCode` public enumerations;
- [x] defined the `Endpoint` and `Client` public protocols;
- [x] implemented the internal `MakeURLRequestUseCase` use case;
- [x] implemented the `MockURLProtocol` class that mocks requests and responses on `URLSession` instances;
- [x] started writing and updating the `README` file.

Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Reviewed-on: #4
2023-04-16 18:47:59 +00:00

55 lines
1.5 KiB
Swift

//
// MakeURLRequestUseCase.swift
// APICore
//
// Created by Javier Cicchelli on 10/04/2023.
// Copyright © 2023 Röck+Cöde. All rights reserved.
//
import Foundation
/// This use case generate a url request out of a given endpoint.
public struct MakeURLRequestUseCase {
// MARK: Initialisers
public init() {}
// MARK: Functions
/// Generate a `URLRequest` instance out of a given endpoint that conforms to the `Endpoint` protocol.
/// - Parameter endpoint: An endpoint which is used to generate a `URLRequest` instance from.
/// - Returns: A `URLRequest` instance filled with data provided by the given endpoint.
public func callAsFunction(endpoint: some Endpoint) throws -> URLRequest {
var urlComponents = URLComponents()
urlComponents.scheme = endpoint.scheme
urlComponents.host = endpoint.host
urlComponents.path = endpoint.path
if let port = endpoint.port {
urlComponents.port = port
}
guard let url = urlComponents.url else {
throw MakeURLRequestError.urlNotCreated
}
var urlRequest = URLRequest(url: url)
urlRequest.httpMethod = endpoint.method.rawValue
urlRequest.httpBody = endpoint.body
urlRequest.allHTTPHeaderFields = endpoint.headers
return urlRequest
}
}
// MARK: - Errors
enum MakeURLRequestError: Error {
case urlNotCreated
}