Alma Alexyz
fbf04d90db
Port the Oracle off the Python g4f container onto on-device providers: Chromium HTTP via Cronet, a shared cookie session, IterList retry, hosted OpenAI-compat aggregators, and same-origin WebView fallbacks instead of CORS fetch.
95 lines
2.6 KiB
Dart
95 lines
2.6 KiB
Dart
import 'dart:convert';
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import 'package:flutter/foundation.dart';
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import 'package:http/http.dart' as http;
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import '../http_client.dart';
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import '../http_util.dart';
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import '../models.dart';
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import 'base_provider.dart';
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import 'webview_base_provider.dart';
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class TeachAnything extends BaseProvider {
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@override
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String get name => 'TeachAnything';
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@override
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String get url => 'https://www.teach-anything.com';
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@override
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bool get working => true;
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@override
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Duration get requestTimeout => const Duration(seconds: 90);
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@override
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List<String> get models => ['gemma'];
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@override
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String get defaultModel => 'gemma';
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@override
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Stream<String> createAsyncGenerator(
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String model,
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List<Message> messages, {
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bool stream = false,
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}) async* {
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try {
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yield await _rest(messages);
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return;
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} catch (e) {
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debugPrint('TeachAnything REST failed, trying origin WebView: $e');
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}
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yield await _viaWebView(messages);
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}
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Future<String> _rest(List<Message> messages) async {
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final prompt = formatPrompt(messages);
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final req = http.Request('POST', Uri.parse('$url/api/generate'));
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req.headers.addAll({
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'accept': '*/*',
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'accept-language': 'en-US,en;q=0.9',
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'cache-control': 'no-cache',
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'content-type': 'application/json',
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'origin': url,
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'referer': '$url/',
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'user-agent': kDesktopUserAgent,
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});
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req.body = jsonEncode({'prompt': prompt});
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final response = await g4fHttp.send(req).timeout(requestTimeout);
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if (response.statusCode != 200) {
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throw Exception('$name returned status ${response.statusCode}');
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}
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final fullText = utf8.decode(await response.stream.toBytes()).trim();
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if (!looksLikeModelOutput(fullText)) throw Exception('$name empty');
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return fullText;
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}
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Future<String> _viaWebView(List<Message> messages) async {
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final promptJson = jsonEncode(formatPrompt(messages));
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final raw = await runOriginWebView(
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originUrl: url,
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timeout: requestTimeout,
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functionBody: '''
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const prompt = $promptJson;
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const r = await fetch('/api/generate', {
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method: 'POST',
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headers: { 'content-type': 'application/json', 'accept': '*/*' },
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credentials: 'same-origin',
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body: JSON.stringify({ prompt })
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});
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if (!r.ok) throw new Error('status ' + r.status);
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return await r.text();
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''',
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);
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final text = raw.trim();
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if (!looksLikeModelOutput(text)) {
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throw Exception(
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'TeachAnything WebView unusable: ${text.substring(0, text.length.clamp(0, 180))}',
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);
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}
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return text;
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}
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}
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