[Issue 9178] Handle multiple formats when decoding dates

modules/swagger-codegen/src/main/resources/swift4/CodableHelper.mustache

@@ -9,6 +9,10 @@ import Foundation
 
 public typealias EncodeResult = (data: Data?, error: Error?)
 
+enum DateError: String, Error {
+    case invalidDate
+}
+
 open class CodableHelper {
 
     open static var dateformatter: DateFormatter?
@@ -18,16 +22,39 @@ open class CodableHelper {
         var returnedError: Error? = nil
 
         let decoder = JSONDecoder()
+
         if let df = self.dateformatter {
             decoder.dateDecodingStrategy = .formatted(df)
         } else {
             decoder.dataDecodingStrategy = .base64
-            let formatter = DateFormatter()
-            formatter.calendar = Calendar(identifier: .iso8601)
-            formatter.locale = Locale(identifier: "en_US_POSIX")
-            formatter.timeZone = TimeZone(secondsFromGMT: 0)
-            formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
-            decoder.dateDecodingStrategy = .formatted(formatter)
+            decoder.dateDecodingStrategy = .custom({ (decoder) -> Date in
+                let container = try decoder.singleValueContainer()
+                let dateStr = try container.decode(String.self)
+
+                let formatters = [
+                    "yyyy-MM-dd",
+                    "yyyy-MM-dd'T'HH:mm:ssZZZZZ",
+                    "yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ",
+                    "yyyy-MM-dd'T'HH:mm:ss'Z'",
+                    "yyyy-MM-dd'T'HH:mm:ss.SSS",
+                    "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",
+                    "yyyy-MM-dd HH:mm:ss"
+                    ].map { (format: String) -> DateFormatter in
+                        let formatter = DateFormatter()
+                        formatter.locale = Locale(identifier: "en_US_POSIX")
+                        formatter.dateFormat = format
+                        return formatter
+                }
+
+                for formatter in formatters {
+
+                    if let date = formatter.date(from: dateStr) {
+                        return date
+                    }
+                }
+
+                throw DateError.invalidDate
+            })
         }
 
         do {

samples/client/petstore-security-test/swift/.swagger-codegen/VERSION

@@ -1 +1 @@
-2.4.0-SNAPSHOT
+2.4.9-SNAPSHOT

samples/client/petstore/swift4/default/.swagger-codegen/VERSION

@@ -1 +1 @@
-2.4.3-SNAPSHOT
+2.4.9-SNAPSHOT

samples/client/petstore/swift4/default/PetstoreClient/Classes/Swaggers/APIs/FakeClassnameTags123API.swift

@@ -45,8 +45,7 @@ open class FakeClassnameTags123API {
         let parameters = JSONEncodingHelper.encodingParameters(forEncodableObject: body)
 
         var url = URLComponents(string: URLString)
-        url?.queryItems = APIHelper.mapValuesToQueryItems([
-        ])
+        url?.queryItems = APIHelper.mapValuesToQueryItems([:])
 
         let requestBuilder: RequestBuilder<Client>.Type = PetstoreClientAPI.requestBuilderFactory.getBuilder()
 

samples/client/petstore/swift4/default/PetstoreClient/Classes/Swaggers/AlamofireImplementations.swift

@@ -20,6 +20,9 @@ class AlamofireRequestBuilderFactory: RequestBuilderFactory {
 // 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<T>: RequestBuilder<T> {
     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)
@@ -58,7 +61,9 @@ open class AlamofireRequestBuilder<T>: RequestBuilder<T> {
         let managerId:String = UUID().uuidString
         // Create a new manager for each request to customize its request header
         let manager = createSessionManager()
-        managerStore[managerId] = manager
+        syncQueue.async(flags: .barrier) {
+            managerStore[managerId] = manager
+        }
 
         let encoding:ParameterEncoding = isBody ? JSONDataEncoding() : URLEncoding()
 
@@ -112,7 +117,9 @@ open class AlamofireRequestBuilder<T>: RequestBuilder<T> {
         }
 
         let cleanupRequest = {
-            _ = managerStore.removeValue(forKey: managerId)
+            syncQueue.async(flags: .barrier) {
+                 _ = managerStore.removeValue(forKey: managerId)
+            }
         }
 
         let validatedRequest = request.validate()
@@ -314,7 +321,9 @@ open class AlamofireDecodableRequestBuilder<T:Decodable>: AlamofireRequestBuilde
         }
 
         let cleanupRequest = {
-            _ = managerStore.removeValue(forKey: managerId)
+            syncQueue.async(flags: .barrier) {
+                _ = managerStore.removeValue(forKey: managerId)
+            }
         }
 
         let validatedRequest = request.validate()

samples/client/petstore/swift4/default/PetstoreClient/Classes/Swaggers/CodableHelper.swift

@@ -9,6 +9,10 @@ import Foundation
 
 public typealias EncodeResult = (data: Data?, error: Error?)
 
+enum DateError: String, Error {
+    case invalidDate
+}
+
 open class CodableHelper {
 
     open static var dateformatter: DateFormatter?
@@ -18,16 +22,39 @@ open class CodableHelper {
         var returnedError: Error? = nil
 
         let decoder = JSONDecoder()
+
         if let df = self.dateformatter {
             decoder.dateDecodingStrategy = .formatted(df)
         } else {
             decoder.dataDecodingStrategy = .base64
-            let formatter = DateFormatter()
-            formatter.calendar = Calendar(identifier: .iso8601)
-            formatter.locale = Locale(identifier: "en_US_POSIX")
-            formatter.timeZone = TimeZone(secondsFromGMT: 0)
-            formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
-            decoder.dateDecodingStrategy = .formatted(formatter)
+            decoder.dateDecodingStrategy = .custom({ (decoder) -> Date in
+                let container = try decoder.singleValueContainer()
+                let dateStr = try container.decode(String.self)
+
+                let formatters = [
+                    "yyyy-MM-dd",
+                    "yyyy-MM-dd'T'HH:mm:ssZZZZZ",
+                    "yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ",
+                    "yyyy-MM-dd'T'HH:mm:ss'Z'",
+                    "yyyy-MM-dd'T'HH:mm:ss.SSS",
+                    "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",
+                    "yyyy-MM-dd HH:mm:ss"
+                    ].map { (format: String) -> DateFormatter in
+                        let formatter = DateFormatter()
+                        formatter.locale = Locale(identifier: "en_US_POSIX")
+                        formatter.dateFormat = format
+                        return formatter
+                }
+
+                for formatter in formatters {
+
+                    if let date = formatter.date(from: dateStr) {
+                        return date
+                    }
+                }
+
+                throw DateError.invalidDate
+            })
         }
 
         do {

samples/client/petstore/swift4/default/SwaggerClientTests/Podfile

@@ -12,7 +12,7 @@ end
 post_install do |installer|
     installer.pods_project.targets.each do |target|
         target.build_configurations.each do |configuration|
-            configuration.build_settings['SWIFT_VERSION'] = "3.0"
+            configuration.build_settings['SWIFT_VERSION'] = "4.2"
         end
     end
 end

samples/client/petstore/swift4/default/SwaggerClientTests/Podfile.lock

@@ -6,14 +6,18 @@ PODS:
 DEPENDENCIES:
   - PetstoreClient (from `../`)
 
+SPEC REPOS:
+  https://github.com/cocoapods/specs.git:
+    - Alamofire
+
 EXTERNAL SOURCES:
   PetstoreClient:
-    :path: ../
+    :path: "../"
 
 SPEC CHECKSUMS:
   Alamofire: f28cdffd29de33a7bfa022cbd63ae95a27fae140
-  PetstoreClient: fef7934ac90bd28c2b81cc5234615112f9ace5f5
+  PetstoreClient: 9f1c86c3f7194758e922fb64277bfb4fc60bbf20
 
-PODFILE CHECKSUM: 417049e9ed0e4680602b34d838294778389bd418
+PODFILE CHECKSUM: 065fc3a3ec186d4f60ef8c7d9624786f07955f2f
 
-COCOAPODS: 1.4.0
+COCOAPODS: 1.7.1