implemented user service (no auth!)

2025-01-01 18:33:53 +00:00
parent 0ded723bb9
commit 8559b1c44e
34 changed files with 1437 additions and 158 deletions
@@ -0,0 +1,8 @@
+import 'package:backend_dart/domain/interface/error.dart';
+import 'package:fpdart/fpdart.dart';
+
+TaskEither<IError, T> Function(T?) errorOnNull<T>(IError error) {
+  return (T? value) {
+    return value != null ? TaskEither.of(value) : TaskEither.left(error);
+  };
+}
@@ -0,0 +1,84 @@
+import 'dart:convert';
+import 'package:backend_dart/domain/errors/error_code.dart';
+import 'package:backend_dart/domain/interface/error.dart';
+import 'package:shelf/shelf.dart';
+
+class ResponseHelpers {
+  /// Sendet eine JSON-Antwort mit einem 200-Statuscode
+  static Response jsonOk(Map<String, dynamic> data) {
+    return Response.ok(
+      jsonEncode(data),
+      headers: {'Content-Type': 'application/json'},
+    );
+  }
+
+  /// Sendet eine JSON-Antwort mit einem spezifischen Statuscode
+  static Response jsonWithStatus(Map<String, dynamic> data, int statusCode) {
+    return Response(
+      statusCode,
+      body: jsonEncode(data),
+      headers: {'Content-Type': 'application/json'},
+    );
+  }
+
+  /// Sendet eine JSON-Antwort für einen Fehler (z. B. 404 oder 500)
+  static Response jsonError(String message, {int statusCode = 500}) {
+    return Response(
+      statusCode,
+      body: jsonEncode({'error': message}),
+      headers: {'Content-Type': 'application/json'},
+    );
+  }
+
+  /// Sendet eine einfache Textantwort
+  static Response textResponse(String message, {int statusCode = 200}) {
+    return Response(
+      statusCode,
+      body: message,
+      headers: {'Content-Type': 'text/plain'},
+    );
+  }
+
+  static Response fromError(IError error) {
+    // Print error to console
+    print('Error: ${error.code.name} - ${error.message}');
+    //print(error.stackTrace);
+    return Response(
+      mapErrorCodeToHttpStatus(error.code),
+      body: jsonEncode({
+        'code': error.code.name,
+        'error': error.message,
+        'details': error.details,
+      }),
+      headers: {'Content-Type': 'application/json'},
+    );
+  }
+}
+
+int mapErrorCodeToHttpStatus(ErrorCode errorCode) {
+  switch (errorCode) {
+    case ErrorCode.networkError:
+      return 503; // Service Unavailable
+    case ErrorCode.validationError:
+    case ErrorCode.inputError:
+      return 400; // Bad Request
+    case ErrorCode.unexpectedError:
+    case ErrorCode.internalError:
+    case ErrorCode.databaseError:
+      return 500; // Internal Server Error
+    case ErrorCode.authenticationError:
+      return 401; // Unauthorized
+    case ErrorCode.permissionDenied:
+      return 403; // Forbidden
+    case ErrorCode.notFound:
+      return 404; // Not Found
+    case ErrorCode.mappingError:
+    case ErrorCode.outputError:
+      return 422; // Unprocessable Entity
+    case ErrorCode.exception:
+    case ErrorCode.unknownError:
+      return 520; // Unknown Error (Custom)
+    default:
+      return 500; // Fallback: Internal Server Error
+  }
+}