Changed auth functions

lib/services/api_client.dart

@@ -36,6 +36,19 @@ class ApiClientV2 {
     required this.server
   });
 
+  Future<ApiResponse> getServerVersion() async {
+    final result = await HttpRequestClient.get(urlPath: '/status', server: server);
+    if (result.successful == true) {
+      return ApiResponse(
+        successful: true,
+        content: jsonDecode(result.body!)['version']
+      );
+    }
+    else {
+      return const ApiResponse(successful: false);
+    }
+  }
+
   Future<ApiResponse> getServerStatus() async {
     final results = await Future.wait([
       HttpRequestClient.get(urlPath: "/stats", server: server),

lib/services/auth.dart

@@ -0,0 +1,82 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:adguard_home_manager/classes/http_client.dart';
+import 'package:adguard_home_manager/models/server.dart';
+
+enum AuthStatus { 
+  success, 
+  invalidCredentials, 
+  manyAttepts, 
+  serverError, 
+  socketException,
+  timeoutException,
+  handshakeException,
+  unknown 
+}
+
+class ServerAuth {
+  static Future<AuthStatus> login(Server server) async {
+    try {
+      final body = {
+        "name": server.user,
+        "password": server.password
+      };
+      final connectionString = "${server.connectionMethod}://${server.domain}${server.port != null ? ':${server.port}' : ""}${server.path ?? ""}/control/login";
+      HttpClient httpClient = HttpClient();
+      HttpClientRequest request = await httpClient.postUrl(Uri.parse(connectionString));
+      request.headers.set('content-type', 'application/json');
+      request.headers.contentLength = utf8.encode(jsonEncode(body)).length;
+      request.add(utf8.encode(json.encode(body)));
+      HttpClientResponse response = await request.close().timeout(const Duration(seconds: 10));
+      httpClient.close();
+      if (response.statusCode == 200) {
+        return AuthStatus.success;
+      }
+      else if (response.statusCode == 400 || response.statusCode == 401 || response.statusCode == 403) {
+        return AuthStatus.invalidCredentials;
+      }
+      else if (response.statusCode == 429) {
+        return AuthStatus.manyAttepts;
+      }
+      else if (response.statusCode == 500) {
+        return AuthStatus.serverError;
+      }
+      else {
+        return AuthStatus.unknown;
+      }
+    } on SocketException {
+      return AuthStatus.socketException;
+    } on TimeoutException {
+      return AuthStatus.timeoutException;
+    } on HandshakeException {
+      return AuthStatus.handshakeException;
+    } catch (e) {
+      return AuthStatus.unknown;
+    }
+  }
+
+  static Future<AuthStatus> loginHA(Server server) async {
+    try {
+      final result = await HttpRequestClient.get(urlPath: "/status", server: server);
+      if (result.successful) {
+        return AuthStatus.success;
+      }
+      else if (result.statusCode == 401 || result.statusCode == 403) {
+        return AuthStatus.invalidCredentials;
+      }
+      else {
+        return AuthStatus.unknown;
+      }
+    } on SocketException {
+      return AuthStatus.socketException;
+    } on TimeoutException {
+      return AuthStatus.timeoutException;
+    } on HandshakeException {
+      return AuthStatus.handshakeException;
+    } catch (e) {
+      return AuthStatus.unknown;
+    }
+  }
+}