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swift5-protocol-oriented.AlamofireImplementations.mustache Maven / Gradle / Ivy
// AlamofireImplementations.swift
//
// Generated by swagger-codegen
// https://github.com/swagger-api/swagger-codegen
//
import Foundation
import Alamofire
class AlamofireRequestBuilderFactory: RequestBuilderFactory {
func getNonDecodableBuilder() -> RequestBuilder.Type {
return AlamofireRequestBuilder.self
}
func getBuilder() -> RequestBuilder.Type {
return AlamofireDecodableRequestBuilder.self
}
}
// Store manager to retain its reference
private var managerStore: [String: Alamofire.SessionManager] = [:]
// Sync queue to manage safe access to the store manager
private let syncQueue = DispatchQueue(label: "thread-safe-sync-queue", attributes: .concurrent)
open class AlamofireRequestBuilder: RequestBuilder {
required public init(method: String, URLString: String, parameters: [String : Any]?, isBody: Bool, headers: [String : String] = [:]) {
super.init(method: method, URLString: URLString, parameters: parameters, isBody: isBody, headers: headers)
}
/**
May be overridden by a subclass if you want to control the session
configuration.
*/
open func createSessionManager() -> Alamofire.SessionManager {
let configuration = URLSessionConfiguration.default
configuration.httpAdditionalHeaders = buildHeaders()
return Alamofire.SessionManager(configuration: configuration)
}
/**
May be overridden by a subclass if you want to control the Content-Type
that is given to an uploaded form part.
Return nil to use the default behavior (inferring the Content-Type from
the file extension). Return the desired Content-Type otherwise.
*/
open func contentTypeForFormPart(fileURL: URL) -> String? {
return nil
}
/**
May be overridden by a subclass if you want to control the request
configuration (e.g. to override the cache policy).
*/
open func makeRequest(manager: SessionManager, method: HTTPMethod, encoding: ParameterEncoding, headers: [String:String]) -> DataRequest {
return manager.request(URLString, method: method, parameters: parameters, encoding: encoding, headers: headers)
}
override open func execute(_ completion: @escaping (_ response: Response?, _ error: Error?) -> Void) {
let managerId:String = UUID().uuidString
// Create a new manager for each request to customize its request header
let manager = createSessionManager()
syncQueue.async(flags: .barrier) {
managerStore[managerId] = manager
}
let encoding:ParameterEncoding = isBody ? JSONDataEncoding() : URLEncoding()
let xMethod = Alamofire.HTTPMethod(rawValue: method)
let fileKeys = parameters == nil ? [] : parameters!.filter { $1 is NSURL }
.map { $0.0 }
if fileKeys.count > 0 {
manager.upload(multipartFormData: { mpForm in
for (k, v) in self.parameters! {
switch v {
case let fileURL as URL:
if let mimeType = self.contentTypeForFormPart(fileURL: fileURL) {
mpForm.append(fileURL, withName: k, fileName: fileURL.lastPathComponent, mimeType: mimeType)
}
else {
mpForm.append(fileURL, withName: k)
}
case let string as String:
mpForm.append(string.data(using: String.Encoding.utf8)!, withName: k)
case let number as NSNumber:
mpForm.append(number.stringValue.data(using: String.Encoding.utf8)!, withName: k)
default:
fatalError("Unprocessable value \(v) with key \(k)")
}
}
}, to: URLString, method: xMethod!, headers: nil, encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
if let onProgressReady = self.onProgressReady {
onProgressReady(upload.uploadProgress)
}
self.processRequest(request: upload, managerId, completion)
case .failure(let encodingError):
completion(nil, ErrorResponse.error(415, nil, encodingError))
}
})
} else {
let request = makeRequest(manager: manager, method: xMethod!, encoding: encoding, headers: headers)
if let onProgressReady = self.onProgressReady {
onProgressReady(request.progress)
}
processRequest(request: request, managerId, completion)
}
}
fileprivate func processRequest(request: DataRequest, _ managerId: String, _ completion: @escaping (_ response: Response?, _ error: Error?) -> Void) {
if let credential = self.credential {
request.authenticate(usingCredential: credential)
}
let cleanupRequest = {
syncQueue.async(flags: .barrier) {
_ = managerStore.removeValue(forKey: managerId)
}
}
let validatedRequest = request.validate()
switch T.self {
case is String.Type:
validatedRequest.responseString(completionHandler: { (stringResponse) in
cleanupRequest()
if stringResponse.result.isFailure {
completion(
nil,
ErrorResponse.error(stringResponse.response?.statusCode ?? 500, stringResponse.data, stringResponse.result.error!)
)
return
}
completion(
Response(
response: stringResponse.response!,
body: ((stringResponse.result.value ?? "") as! T)
),
nil
)
})
case is URL.Type:
validatedRequest.responseData(completionHandler: { (dataResponse) in
cleanupRequest()
do {
guard !dataResponse.result.isFailure else {
throw DownloadException.responseFailed
}
guard let data = dataResponse.data else {
throw DownloadException.responseDataMissing
}
guard let request = request.request else {
throw DownloadException.requestMissing
}
let fileManager = FileManager.default
let urlRequest = try request.asURLRequest()
let documentsDirectory = fileManager.urls(for: .documentDirectory, in: .userDomainMask)[0]
let requestURL = try self.getURL(from: urlRequest)
var requestPath = try self.getPath(from: requestURL)
if let headerFileName = self.getFileName(fromContentDisposition: dataResponse.response?.allHeaderFields["Content-Disposition"] as? String) {
requestPath = requestPath.appending("/\(headerFileName)")
}
let filePath = documentsDirectory.appendingPathComponent(requestPath)
let directoryPath = filePath.deletingLastPathComponent().path
try fileManager.createDirectory(atPath: directoryPath, withIntermediateDirectories: true, attributes: nil)
try data.write(to: filePath, options: .atomic)
completion(
Response(
response: dataResponse.response!,
body: (filePath as! T)
),
nil
)
} catch let requestParserError as DownloadException {
completion(nil, ErrorResponse.error(400, dataResponse.data, requestParserError))
} catch let error {
completion(nil, ErrorResponse.error(400, dataResponse.data, error))
}
return
})
case is Void.Type:
validatedRequest.responseData(completionHandler: { (voidResponse) in
cleanupRequest()
if voidResponse.result.isFailure {
completion(
nil,
ErrorResponse.error(voidResponse.response?.statusCode ?? 500, voidResponse.data, voidResponse.result.error!)
)
return
}
completion(
Response(
response: voidResponse.response!,
body: nil),
nil
)
})
default:
validatedRequest.responseData(completionHandler: { (dataResponse) in
cleanupRequest()
if dataResponse.result.isFailure {
completion(
nil,
ErrorResponse.error(dataResponse.response?.statusCode ?? 500, dataResponse.data, dataResponse.result.error!)
)
return
}
completion(
Response(
response: dataResponse.response!,
body: (dataResponse.data as! T)
),
nil
)
})
}
}
open func buildHeaders() -> [String: String] {
var httpHeaders = SessionManager.defaultHTTPHeaders
for (key, value) in self.headers {
httpHeaders[key] = value
}
return httpHeaders
}
fileprivate func getFileName(fromContentDisposition contentDisposition : String?) -> String? {
guard let contentDisposition = contentDisposition else {
return nil
}
let items = contentDisposition.components(separatedBy: ";")
var filename : String? = nil
for contentItem in items {
let filenameKey = "filename="
guard let range = contentItem.range(of: filenameKey) else {
break
}
filename = contentItem
return filename?
.replacingCharacters(in: range, with:"")
.replacingOccurrences(of: "\"", with: "")
.trimmingCharacters(in: .whitespacesAndNewlines)
}
return filename
}
fileprivate func getPath(from url : URL) throws -> String {
guard var path = URLComponents(url: url, resolvingAgainstBaseURL: true)?.path else {
throw DownloadException.requestMissingPath
}
if path.hasPrefix("/") {
path.remove(at: path.startIndex)
}
return path
}
fileprivate func getURL(from urlRequest : URLRequest) throws -> URL {
guard let url = urlRequest.url else {
throw DownloadException.requestMissingURL
}
return url
}
}
fileprivate enum DownloadException : Error {
case responseDataMissing
case responseFailed
case requestMissing
case requestMissingPath
case requestMissingURL
}
public enum AlamofireDecodableRequestBuilderError: Error {
case emptyDataResponse
case nilHTTPResponse
case jsonDecoding(DecodingError)
case generalError(Error)
}
open class AlamofireDecodableRequestBuilder: AlamofireRequestBuilder {
override fileprivate func processRequest(request: DataRequest, _ managerId: String, _ completion: @escaping (_ response: Response?, _ error: Error?) -> Void) {
if let credential = self.credential {
request.authenticate(usingCredential: credential)
}
let cleanupRequest = {
syncQueue.async(flags: .barrier) {
_ = managerStore.removeValue(forKey: managerId)
}
}
let validatedRequest = request.validate()
switch T.self {
case is String.Type:
validatedRequest.responseString(completionHandler: { (stringResponse) in
cleanupRequest()
if stringResponse.result.isFailure {
completion(
nil,
ErrorResponse.error(stringResponse.response?.statusCode ?? 500, stringResponse.data, stringResponse.result.error!)
)
return
}
completion(
Response(
response: stringResponse.response!,
body: ((stringResponse.result.value ?? "") as! T)
),
nil
)
})
case is Void.Type:
validatedRequest.responseData(completionHandler: { (voidResponse) in
cleanupRequest()
if voidResponse.result.isFailure {
completion(
nil,
ErrorResponse.error(voidResponse.response?.statusCode ?? 500, voidResponse.data, voidResponse.result.error!)
)
return
}
completion(
Response(
response: voidResponse.response!,
body: nil),
nil
)
})
case is Data.Type:
validatedRequest.responseData(completionHandler: { (dataResponse) in
cleanupRequest()
if dataResponse.result.isFailure {
completion(
nil,
ErrorResponse.error(dataResponse.response?.statusCode ?? 500, dataResponse.data, dataResponse.result.error!)
)
return
}
completion(
Response(
response: dataResponse.response!,
body: (dataResponse.data as! T)
),
nil
)
})
default:
validatedRequest.responseData(completionHandler: { (dataResponse: DataResponse) in
cleanupRequest()
guard dataResponse.result.isSuccess else {
completion(nil, ErrorResponse.error(dataResponse.response?.statusCode ?? 500, dataResponse.data, dataResponse.result.error!))
return
}
guard let data = dataResponse.data, !data.isEmpty else {
completion(nil, ErrorResponse.error(-1, nil, AlamofireDecodableRequestBuilderError.emptyDataResponse))
return
}
guard let httpResponse = dataResponse.response else {
completion(nil, ErrorResponse.error(-2, nil, AlamofireDecodableRequestBuilderError.nilHTTPResponse))
return
}
var responseObj: Response? = nil
let decodeResult: (decodableObj: T?, error: Error?) = CodableHelper.decode(T.self, from: data)
if decodeResult.error == nil {
responseObj = Response(response: httpResponse, body: decodeResult.decodableObj)
}
completion(responseObj, decodeResult.error)
})
}
}
}
