Moya Download File

.swift

import Foundation
import Moya

let endpointClosure = {
    (target: FileService) -> Endpoint<FileService> in
    let url = URL(string: target.path)?.absoluteString
    return Endpoint(URL: url!,enter code here sampleResponseClosure: { .networkResponse(200, target.sampleData) }, method: target.method, parameters: target.parameters)
}

private func JSONResponseDataFormatter(_ data: Data) -> Data {
    do {
        let dataAsJSON = try JSONSerialization.jsonObject(with: data)
        let prettyData =  try JSONSerialization.data(withJSONObject: dataAsJSON, options: .prettyPrinted)
        return prettyData
    } catch {
        return data // fallback to original data if it can't be serialized.
    }
}

let FileDownloadProvider = RxMoyaProvider<FileService>(endpointClosure: endpointClosure, plugins: [NetworkLoggerPlugin(verbose: true, responseDataFormatter: JSONResponseDataFormatter)])

enum FileService {
    case download(url: String)
}

extension FileService:TargetType{

    var baseURL : URL{
            return URL(string:"http://no.use.but.cant.empty")!
    }
    
    
    var path:String{
        switch self {
        case .download(let url):
            return url
        }
        
    }

    var method: Moya.Method {
        switch self {
        case .download:
            return .get

        }

    }

    
    var parameters: [String:Any]?{
        switch self {
        case .download:
            return nil
        }
    }
    
    var sampleData:Data{
        switch self {
            default:
            return "default data".utf8EncodedData
        }
    }
    
    var task:Task{
        switch self {
        case .download:
            return .download(DownloadType.request(DefaultDownloadDestination))

        }
    }
    
}


private let DefaultDownloadDestination: DownloadDestination = { temporaryURL, response in
    
    let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
    let fileURL = documentsURL.appendingPathComponent(response.suggestedFilename!)
    return (fileURL, [.removePreviousFile, .createIntermediateDirectories])
    
}

// MARK: - Helpers
private extension String {
    var urlEscapedString: String {
        return self.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)!
    }
    
    var utf8EncodedData: Data {
        return self.data(using: .utf8)!
    }
}