Base user workflow (create/update)

lib/api/api_client.dart

@@ -6,6 +6,7 @@ import 'package:http/browser_client.dart';
 import 'package:http/http.dart';
 import 'package:tuuli_app/api/model/table_field_model.dart';
 import 'package:tuuli_app/api/model/tables_list_model.dart';
+import 'package:tuuli_app/api/model/user_model.dart';
 
 class ErrorOrData<T> {
   final T? data;
@@ -292,6 +293,69 @@ class ApiClient {
     return ErrorOrData(ignored, error);
   }
 
+  FutureErrorOrData<bool> createUser(
+      TableModel table, String username, String password) async {
+    bool? ignored;
+    Exception? error;
+
+    final response = await post(
+      '/api/createUser',
+      body: {
+        "username": username,
+        "password": password,
+      },
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    );
+    if (response.statusCode == 200) {
+      final body = json.decode(await response.stream.bytesToString());
+      if (body['error'] != null) {
+        error = Exception(body['error']);
+      } else {
+        ignored = true;
+      }
+    } else if (response.statusCode == 422) {
+      error = Exception('Invalid request parameters');
+    } else {
+      error = Exception('HTTP ${response.statusCode}');
+    }
+
+    return ErrorOrData(ignored, error);
+  }
+
+  FutureErrorOrData<bool> updateUser(
+      TableModel table, int userId, String password, String accessToken) async {
+    bool? ignored;
+    Exception? error;
+
+    final response = await post(
+      '/api/updateUser',
+      body: {
+        "user_id": userId,
+        "password": password,
+        "access_token": accessToken,
+      },
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    );
+    if (response.statusCode == 200) {
+      final body = json.decode(await response.stream.bytesToString());
+      if (body['error'] != null) {
+        error = Exception(body['error']);
+      } else {
+        ignored = true;
+      }
+    } else if (response.statusCode == 422) {
+      error = Exception('Invalid request parameters');
+    } else {
+      error = Exception('HTTP ${response.statusCode}');
+    }
+
+    return ErrorOrData(ignored, error);
+  }
+
   // REGION: HTTP Methods implementation
 
   Future<StreamedResponse> get(

lib/api/model/user_model.dart

@@ -0,0 +1,27 @@
+class UserModel {
+  final int id;
+  final String username;
+  final String? password;
+  final String? accessToken;
+
+  UserModel({
+    required this.id,
+    required this.username,
+    this.password,
+    this.accessToken,
+  });
+
+  factory UserModel.fromJson(Map<String, dynamic> json) => UserModel(
+        id: json["id"],
+        username: json["username"],
+        password: json["password"],
+        accessToken: json["access_token"],
+      );
+
+  Map<String, dynamic> toJson() => {
+        "id": id,
+        "username": username,
+        "password": password,
+        "access_token": accessToken,
+      };
+}