init project setup of the backend with dart and go as well as the frontend with nextjs

backend_dart/.gitignore

@@ -0,0 +1,3 @@
+# https://dart.dev/guides/libraries/private-files
+# Created by `dart pub`
+.dart_tool/

backend_dart/CHANGELOG.md

@@ -0,0 +1,3 @@
+## 1.0.0
+
+- Initial version.

backend_dart/README.md

@@ -0,0 +1,2 @@
+A sample command-line application with an entrypoint in `bin/`, library code
+in `lib/`, and example unit test in `test/`.

backend_dart/analysis_options.yaml

@@ -0,0 +1,30 @@
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options

backend_dart/bin/backend_dart.dart

@@ -0,0 +1,11 @@
+import 'package:backend_dart/backend_dart.dart' as backend_dart;
+import 'package:backend_dart/infrastructure/config/config.dart';
+import 'package:backend_dart/interfaces/http/server.dart';
+
+void main() async {
+  final config = await Config.load();
+  final server = Server(config);
+
+  print('Starting ActaTempus server on port ${config.port}...');
+  await server.start();
+}

backend_dart/lib/application/usecases/register_user.dart

@@ -0,0 +1,19 @@
+import 'package:backend_dart/domain/entities/user.dart';
+import 'package:backend_dart/domain/repositories/user_repository.dart';
+
+class RegisterUserUseCase {
+  final UserRepository userRepository;
+
+  RegisterUserUseCase(this.userRepository);
+
+  Future<void> execute(String name, String email, String password) async {
+    final user = User(
+      id: 'generated-id', // Eine Methode zur ID-Erzeugung einfügen
+      name: name,
+      email: email,
+      password: password, // In der Realität: Passwörter hashen
+    );
+
+    await userRepository.create(user);
+  }
+}

backend_dart/lib/backend_dart.dart

@@ -0,0 +1,3 @@
+int calculate() {
+  return 6 * 7;
+}

backend_dart/lib/domain/entities/user.dart

@@ -0,0 +1,13 @@
+class User {
+  final String id;
+  final String name;
+  final String email;
+  final String password;
+
+  User({
+    required this.id,
+    required this.name,
+    required this.email,
+    required this.password,
+  });
+}

backend_dart/lib/domain/repositories/user_repository.dart

@@ -0,0 +1,7 @@
+import 'package:backend_dart/domain/entities/user.dart';
+
+abstract class UserRepository {
+  Future<void> create(User user);
+  Future<User?> findByEmail(String email);
+  Future<User?> findById(String id);
+}

backend_dart/lib/infrastructure/config/config.dart

@@ -0,0 +1,20 @@
+import 'dart:io';
+import 'package:yaml/yaml.dart';
+
+class Config {
+  final String databaseUrl;
+  final String port;
+
+  Config({required this.databaseUrl, required this.port});
+
+  static Future<Config> load() async {
+    final file = File('config.yaml');
+    final content = await file.readAsString();
+    final config = loadYaml(content);
+
+    return Config(
+      databaseUrl: config['database']['url'],
+      port: config['server']['port'],
+    );
+  }
+}

backend_dart/lib/infrastructure/persistence/postgres_user_repository.dart

@@ -0,0 +1,60 @@
+import 'package:backend_dart/domain/entities/user.dart';
+import 'package:backend_dart/domain/repositories/user_repository.dart';
+import 'package:postgres/postgres.dart';
+
+class PostgresUserRepository implements UserRepository {
+  final PostgreSQLConnection connection;
+
+  PostgresUserRepository(this.connection);
+
+  @override
+  Future<void> create(User user) async {
+    await connection.query(
+      'INSERT INTO users (id, name, email, password) VALUES (@id, @name, @mail, @pwd)',
+      substitutionValues: {
+        'id': user.id,
+        'name': user.name,
+        'mail': user.email,
+        'pwd': user.password,
+      },
+    );
+  }
+
+  @override
+  Future<User?> findByEmail(String email) async {
+    final results = await connection.query(
+      'SELECT id, name, email, password FROM users WHERE email = @mail',
+      substitutionValues: {'mail': email},
+    );
+
+    if (results.isNotEmpty) {
+      final row = results.first;
+      return User(
+        id: row[0],
+        name: row[1],
+        email: row[2],
+        password: row[3],
+      );
+    }
+    return null;
+  }
+
+  @override
+  Future<User?> findById(String id) async {
+    final results = await connection.query(
+      'SELECT id, name, email, password FROM users WHERE id = @id',
+      substitutionValues: {'id': id},
+    );
+
+    if (results.isNotEmpty) {
+      final row = results.first;
+      return User(
+        id: row[0],
+        name: row[1],
+        email: row[2],
+        password: row[3],
+      );
+    }
+    return null;
+  }
+}

backend_dart/lib/interfaces/http/server.dart

@@ -0,0 +1,21 @@
+import 'dart:io';
+
+import 'package:backend_dart/infrastructure/config/config.dart';
+
+class Server {
+  final Config config;
+
+  Server(this.config);
+
+  Future<void> start() async {
+    final server =
+        await HttpServer.bind(InternetAddress.anyIPv4, int.parse(config.port));
+    print('Listening on port ${config.port}');
+
+    await for (HttpRequest request in server) {
+      request.response
+        ..write('Welcome to ActaTempus!')
+        ..close();
+    }
+  }
+}

backend_dart/pubspec.lock

@@ -0,0 +1,437 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: "0b2f2bd91ba804e53a61d757b986f89f1f9eaed5b11e4b2f5a2468d86d6c9fc7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "67.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "37577842a27e4338429a1cbc32679d508836510b056f1eedf0c8d20e39c1383d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.4.1"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: bf9f5caeea8d8fe6721a9c358dd8a5c1947b27f1cfaa18b39c301273594919e6
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.0"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  buffer:
+    dependency: transitive
+    description:
+      name: buffer
+      sha256: "389da2ec2c16283c8787e0adaede82b1842102f8c8aae2f49003a766c5c6b3d1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      sha256: fb98c0f6d12c920a02ee2d998da788bca066ca5f148492b7085ee23372b12306
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: "0f08b14755d163f6e2134cb58222dd25ea2a2ee8a195e53983d57c075324d592"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      sha256: "3945034e86ea203af7a056d98e98e42a5518fff200d6e8e6647e1886b07e936e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.8.0"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      sha256: f64a0333a82f30b0cca061bc3d143813a486dc086b574bfb233b7c1372427694
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: "0e7014b3b7d4dac1ca4d6114f82bf1782ee86745b9b42a92c9289c23d8a0ab63"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: "97486f20f9c2f7be8f514851703d0119c3596d14ea63227af6f7a481ef2b2f8b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.2"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: "2ec25704aba361659e10e3e5f5d672068d332fc8ac516421d483a11e5cbd061e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: c1b2e9b5ea78c45e1a0788d29606ba27dc5f71f019f32ca5140f61ef071838cf
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.1"
+  lints:
+    dependency: "direct dev"
+    description:
+      name: lints
+      sha256: cbf8d4b858bb0134ef3ef87841abdf8d63bfc255c266b7bf6b39daa1085c4290
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: "623a88c9594aa774443aa3eb2d41807a48486b5613e67599fb4c41c0ad47c340"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: d2323aa2060500f906aa31a895b4030b6da3ebdcc5619d14ce1aada65cd161cb
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.16+1"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.16.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      sha256: "6e7eac89047ab8a8d26cf16127b5ed26de65209847630400f9aefd7cd5c730db"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: "1c5b77ccc91e4823a5af61ee74e6b972db1ef98c2ff5a18d3161c982a55448bd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "087ce49c3f0dc39180befefc60fdb4acd8f8620e5682fe2476afd0b3688bb4af"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.0"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "20fe868b6314b322ea036ba325e6fc0711a22948856475e2c2b6306e8ab39c2a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.1"
+  postgres:
+    dependency: "direct main"
+    description:
+      name: postgres
+      sha256: f8e4f14734d096277f77ed5dddefcbc1ce18f8f7db5b7ff4b5dd6df2d9db2730
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.4"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "40d3ab1bbd474c4c2328c91e3a7df8c6dd629b79ece4c4bd04bee496a224fb0c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  sasl_scram:
+    dependency: transitive
+    description:
+      name: sasl_scram
+      sha256: a47207a436eb650f8fdcf54a2e2587b850dc3caef9973ce01f332b07a6fc9cb9
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.1"
+  saslprep:
+    dependency: transitive
+    description:
+      name: saslprep
+      sha256: "3d421d10be9513bf4459c17c5e70e7b8bc718c9fc5ad4ba5eb4f5fd27396f740"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.3"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: ad29c505aee705f41a4d8963641f91ac4cee3c8fad5947e033390a7bd8180fa4
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      sha256: "89f967eca29607c933ba9571d838be31d67f53f6e4ee15147d5dc2934fee1b1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      sha256: c87c3875f91262785dade62d135760c2c69cb217ac759485334c5857ad89f6e3
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.3"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "073c147238594ecd0d193f3456a5fe91c4b0abbcc68bf5cd95b36c4e194ac611"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      sha256: c0713a43e323c3302c2abe2a1cc89aa057a387101ebd280371d6a6c9fa68516b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      sha256: "708b3f6b97248e5781f493b765c3337db11c5d2c81c3094f10904bfa8004c703"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.10.12"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.0"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.11.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "0bd04f5bb74fcd6ff0606a888a30e917af9bd52820b178eaa464beb11dca84b6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  test:
+    dependency: "direct dev"
+    description:
+      name: test
+      sha256: "7ee44229615f8f642b68120165ae4c2a75fe77ae2065b1e55ae4711f6cf0899e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.25.7"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.2"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      sha256: "55ea5a652e38a1dfb32943a7973f3681a60f872f8c3a05a14664ad54ef9c6696"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.4"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.2"
+  unorm_dart:
+    dependency: transitive
+    description:
+      name: unorm_dart
+      sha256: "23d8bf65605401a6a32cff99435fed66ef3dab3ddcad3454059165df46496a3b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: "0968250880a6c5fe7edc067ed0a13d4bae1577fe2771dcf3010d52c4a9d3ca14"
+      url: "https://pub.dev"
+    source: hosted
+    version: "14.3.1"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "3d2ad6751b3c16cf07c7fca317a1413b3f26530319181b37e3b9039b84fc01d8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "97da13628db363c635202ad97068d47c5b8aa555808e7a9411963c533b449b27"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "3c12d96c0c9a4eec095246debcea7b86c0324f22df69893d538fcc6f1b8cce83"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.6"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: "9f187088ed104edd8662ca07af4b124465893caf063ba29758f97af57e61da8f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.1"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      sha256: "87d3f2333bb240704cd3f1c6b5b7acd8a10e7f0bc28c28dcf14e782014f4a572"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  yaml:
+    dependency: "direct main"
+    description:
+      name: yaml
+      sha256: "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+sdks:
+  dart: ">=3.3.0 <4.0.0"

backend_dart/pubspec.yaml

@@ -0,0 +1,17 @@
+name: backend_dart
+description: A sample command-line application.
+version: 1.0.0
+# repository: https://github.com/my_org/my_repo
+
+environment:
+  sdk: ^3.3.0
+
+# Add regular dependencies here.
+dependencies:
+  # path: ^1.8.0
+  postgres: ^2.4.1
+  yaml: ^3.1.0
+
+dev_dependencies:
+  lints: ^3.0.0
+  test: ^1.24.0

backend_dart/test/backend_dart_test.dart

@@ -0,0 +1,8 @@
+import 'package:backend_dart/backend_dart.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test('calculate', () {
+    expect(calculate(), 42);
+  });
+}