Connect to local Ollama instance (#2)

- Connect to Ollama local instance
- Check for Ollama connection and models
- Retrieve models
- Pick mode
- Generate from a text prompt
- Chat capabilities

.github/workflows/create_release.yaml

@@ -44,7 +44,7 @@ jobs:
  flutter pub global run intl_utils:generate
 
  - name: Build artifact
- run: flutter build web --base-href "/olpaka/"
+ run: flutter build web --release --base-href "/olpaka/"
 
  - name: Upload static content
  uses: actions/upload-pages-artifact@v3

lib/app/dependency_injection.dart

@@ -1,7 +1,9 @@
 
-import 'package:get_it/get_it.dart';
 
-void registerModules() {
- var l = GetIt.instance;
+import 'package:olpaka/chat/di.dart';
+import 'package:olpaka/ollama/di.dart';
 
+void registerModules() {
+ registerOllama();
+ registerChat();
 }

lib/app/http_client.dart

@@ -0,0 +1,75 @@
+import 'package:dio/dio.dart';
+
+class HttpClient {
+ final Dio _client;
+
+ HttpClient(this._client);
+
+ Future<HttpResponse> post(String endpoint, {required Object? data}) async {
+ Response<String> response;
+ try {
+ response = await _client.post(endpoint, data: data);
+ } on DioException catch (e) {
+ return _handleException(e);
+ }
+ return _handleResponse(response);
+ }
+
+ Future<HttpResponse> get(String endpoint) async {
+ Response<String> response;
+ try {
+ response = await _client.get(endpoint);
+ } on DioException catch (e) {
+ return _handleException(e);
+ }
+ return _handleResponse(response);
+ }
+
+ HttpResponse _handleResponse(Response<String> response) {
+ final int? statusCode = response.statusCode;
+ final String? data = response.data;
+ final String? message = response.statusMessage;
+ if (statusCode == null || data == null) {
+ return HttpResponseUnknownError();
+ }
+ if (statusCode < 200 && statusCode > 299) {
+ return HttpResponseError(statusCode, message);
+ }
+ return HttpResponseSuccess(data);
+ }
+
+ HttpResponse _handleException(DioException exception) {
+ if (exception.type == DioExceptionType.connectionError) {
+ var baseUrl = _client.options.baseUrl;
+ var isLocalhost =
+ baseUrl.contains("localhost") || baseUrl.contains("127.0.0.1");
+ if (isLocalhost) {
+ return HttpResponseConnectionError();
+ }
+ return HttpResponseUnknownError();
+ } else {
+ return HttpResponseUnknownError();
+ }
+ }
+}
+
+sealed class HttpResponse {}
+
+class HttpResponseSuccess extends HttpResponse {
+ final String body;
+
+ HttpResponseSuccess(this.body);
+}
+
+class HttpResponseConnectionError extends HttpResponse {}
+
+class HttpResponseUnknownError extends HttpResponse {}
+
+class HttpResponseError extends HttpResponse {
+ final int code;
+ final String? message;
+
+ HttpResponseError(this.code, this.message);
+
+}
+

lib/app/logger.dart

@@ -0,0 +1,7 @@
+import 'package:logger/logger.dart';
+
+final logger = Logger(
+ filter: null,
+ printer: PrettyPrinter(),
+ output: null,
+);

lib/app/olpaka_app.dart

@@ -9,17 +9,17 @@ class OlpakaApp extends StatelessWidget {
  Widget build(BuildContext context) {
  return MaterialApp.router(
  title: 'Olpaka',
- themeMode: ThemeMode.system,
+ themeMode: ThemeMode.light,
  theme: ThemeData(
  colorScheme: ColorScheme.fromSeed(
- seedColor: Colors.indigo,
- brightness: Brightness.dark,
+ seedColor: Colors.blue,
+ brightness: Brightness.light,
  ),
  useMaterial3: true,
  ),
  darkTheme: ThemeData(
  colorScheme: ColorScheme.fromSeed(
- seedColor: Colors.indigo,
+ seedColor: Colors.red,
  brightness: Brightness.dark,
  ),
  useMaterial3: true,

lib/chat/di.dart

@@ -0,0 +1,7 @@
+import 'package:get_it/get_it.dart';
+import 'package:olpaka/chat/view_model.dart';
+
+registerChat() {
+ final l = GetIt.instance;
+ l.registerFactory(() => ChatViewModel(l.get()));
+}