Moya/Examples/_shared/GitHubUserContentAPI.swift

import Foundation
import Moya

let gitHubUserContentProvider = MoyaProvider<GitHubUserContent>(plugins: [NetworkLoggerPlugin(configuration: .init(logOptions: .verbose))])

public enum GitHubUserContent {
    case downloadMoyaWebContent(String)
}

extension GitHubUserContent: TargetType {
    public var baseURL: URL { URL(string: "https://raw.githubusercontent.com")! } // swiftlint:disable:this force_unwrapping
    public var path: String {
        switch self {
        case .downloadMoyaWebContent(let contentPath):
            return "/Moya/Moya/master/web/\(contentPath)"
        }
    }
    public var method: Moya.Method {
        switch self {
        case .downloadMoyaWebContent:
            return .get
        }
    }
    public var task: Task {
        switch self {
        case .downloadMoyaWebContent:
            return .downloadDestination(defaultDownloadDestination)
        }
    }
    public var sampleData: Data {
        switch self {
        case .downloadMoyaWebContent:
            return Giphy.animatedBirdData
        }
    }
    public var headers: [String: String]? { nil }

}

private let defaultDownloadDestination: DownloadDestination = { temporaryURL, response in
    let directoryURLs = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)

    if !directoryURLs.isEmpty {
        guard let suggestedFilename = response.suggestedFilename else {
            fatalError("@Moya/contributor error!! We didn't anticipate this being nil")
        }
        return (directoryURLs[0].appendingPathComponent(suggestedFilename), [])
    }

    return (temporaryURL, [])
}