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Merge pull request #231 from pangeachat/language-detect-api
[WIP] Language-detect-api
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lib/pangea/choreographer/controllers/analytics_sender.dart
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138 changes: 138 additions & 0 deletions
138
lib/pangea/controllers/language_detection_controller.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| import 'dart:async'; | ||
| import 'dart:convert'; | ||
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| import 'package:fluffychat/pangea/config/environment.dart'; | ||
| import 'package:fluffychat/pangea/controllers/pangea_controller.dart'; | ||
| import 'package:fluffychat/pangea/network/urls.dart'; | ||
| import 'package:http/http.dart' as http; | ||
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| import '../network/requests.dart'; | ||
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| class LanguageDetectionRequest { | ||
| /// The full text from which to detect the language. | ||
| String fullText; | ||
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| /// The base language of the user, if known. Including this is much preferred | ||
| /// and should return better results; however, it is not absolutely necessary. | ||
| /// This property is nullable to allow for situations where the languages are not set | ||
| /// at the time of the request. | ||
| String? userL1; | ||
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| /// The target language of the user. This is expected to be set for the request | ||
| /// but is nullable to handle edge cases where it might not be. | ||
| String? userL2; | ||
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| LanguageDetectionRequest({ | ||
| required this.fullText, | ||
| this.userL1 = "", | ||
| required this.userL2, | ||
| }); | ||
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| Map<String, dynamic> toJson() => { | ||
| 'full_text': fullText, | ||
| 'user_l1': userL1, | ||
| 'user_l2': userL2, | ||
| }; | ||
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| @override | ||
| bool operator ==(Object other) { | ||
| if (identical(this, other)) return true; | ||
| return other is LanguageDetectionRequest && | ||
| other.fullText == fullText && | ||
| other.userL1 == userL1 && | ||
| other.userL2 == userL2; | ||
| } | ||
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| @override | ||
| int get hashCode => fullText.hashCode ^ userL1.hashCode ^ userL2.hashCode; | ||
| } | ||
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| class LanguageDetectionResponse { | ||
| List<Map<String, dynamic>> detections; | ||
| String fullText; | ||
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| LanguageDetectionResponse({ | ||
| required this.detections, | ||
| required this.fullText, | ||
| }); | ||
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| factory LanguageDetectionResponse.fromJson(Map<String, dynamic> json) { | ||
| return LanguageDetectionResponse( | ||
| detections: List<Map<String, dynamic>>.from(json['detections']), | ||
| fullText: json['full_text'], | ||
| ); | ||
| } | ||
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| Map<String, dynamic> toJson() { | ||
| return { | ||
| 'detections': detections, | ||
| 'full_text': fullText, | ||
| }; | ||
| } | ||
| } | ||
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| class _LanguageDetectionCacheItem { | ||
| Future<LanguageDetectionResponse> data; | ||
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| _LanguageDetectionCacheItem({ | ||
| required this.data, | ||
| }); | ||
| } | ||
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| class LanguageDetectionController { | ||
| static final Map<LanguageDetectionRequest, _LanguageDetectionCacheItem> | ||
| _cache = {}; | ||
| late final PangeaController _pangeaController; | ||
| Timer? _cacheClearTimer; | ||
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| LanguageDetectionController(PangeaController pangeaController) { | ||
| _pangeaController = pangeaController; | ||
| _initializeCacheClearing(); | ||
| } | ||
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| void _initializeCacheClearing() { | ||
| const duration = Duration(minutes: 15); // Adjust the duration as needed | ||
| _cacheClearTimer = Timer.periodic(duration, (Timer t) => _clearCache()); | ||
| } | ||
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| void _clearCache() { | ||
| _cache.clear(); | ||
| } | ||
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| void dispose() { | ||
| _cacheClearTimer?.cancel(); | ||
| } | ||
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| Future<LanguageDetectionResponse> get( | ||
| LanguageDetectionRequest params, | ||
| ) async { | ||
| if (_cache.containsKey(params)) { | ||
| return _cache[params]!.data; | ||
| } else { | ||
| final Future<LanguageDetectionResponse> response = _fetchResponse( | ||
| await _pangeaController.userController.accessToken, | ||
| params, | ||
| ); | ||
| _cache[params] = _LanguageDetectionCacheItem(data: response); | ||
| return response; | ||
| } | ||
| } | ||
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| static Future<LanguageDetectionResponse> _fetchResponse( | ||
| String accessToken, | ||
| LanguageDetectionRequest params, | ||
| ) async { | ||
| final Requests request = Requests( | ||
| choreoApiKey: Environment.choreoApiKey, | ||
| accessToken: accessToken, | ||
| ); | ||
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| final http.Response res = await request.post( | ||
| url: PApiUrls.languageDetection, | ||
| body: params.toJson(), | ||
| ); | ||
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| final Map<String, dynamic> json = jsonDecode(res.body); | ||
| return LanguageDetectionResponse.fromJson(json); | ||
| } | ||
| } |
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