[mobile] Remove old feature flag service

mobile/lib/core/constants.dart

@@ -39,13 +39,6 @@ const dragSensitivity = 8;
 
 const supportEmail = 'support@ente.io';
 
-// Default values for various feature flags
-class FFDefault {
-  static const bool enableStripe = true;
-  static const bool disableCFWorker = false;
-  static const bool enablePasskey = false;
-}
-
 // this is the chunk size of the un-encrypted file which is read and encrypted before uploading it as a single part.
 const multipartPartSize = 20 * 1024 * 1024;
 

mobile/lib/services/feature_flag_service.dart

@@ -1,142 +0,0 @@
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:flutter/foundation.dart';
-import 'package:logging/logging.dart';
-import 'package:photos/core/configuration.dart';
-import 'package:photos/core/constants.dart';
-import 'package:photos/core/network/network.dart';
-import 'package:shared_preferences/shared_preferences.dart';
-
-class FeatureFlagService {
-  FeatureFlagService._privateConstructor();
-
-  static final FeatureFlagService instance =
-      FeatureFlagService._privateConstructor();
-  static const _featureFlagsKey = "feature_flags_key";
-  static final _internalUserIDs = const String.fromEnvironment(
-    "internal_user_ids",
-    defaultValue: "1,2,3,4,191,125,1580559962388044,1580559962392434,10000025",
-  ).split(",").map((element) {
-    return int.parse(element);
-  }).toSet();
-
-  final _logger = Logger("FeatureFlagService");
-  FeatureFlags? _featureFlags;
-  late SharedPreferences _prefs;
-
-  Future<void> init() async {
-    _prefs = await SharedPreferences.getInstance();
-    // Fetch feature flags from network in async manner.
-    // Intention of delay is to give more CPU cycles to other tasks
-    Future.delayed(
-      const Duration(seconds: 5),
-      () {
-        fetchFeatureFlags();
-      },
-    );
-  }
-
-  FeatureFlags _getFeatureFlags() {
-    _featureFlags ??=
-        FeatureFlags.fromJson(_prefs.getString(_featureFlagsKey)!);
-    // if nothing is cached, use defaults as temporary fallback
-    if (_featureFlags == null) {
-      return FeatureFlags.defaultFlags;
-    }
-    return _featureFlags!;
-  }
-
-  bool disableCFWorker() {
-    try {
-      return _getFeatureFlags().disableCFWorker;
-    } catch (e) {
-      _logger.severe(e);
-      return FFDefault.disableCFWorker;
-    }
-  }
-
-  bool enableStripe() {
-    if (Platform.isIOS) {
-      return false;
-    }
-    try {
-      return _getFeatureFlags().enableStripe;
-    } catch (e) {
-      _logger.severe(e);
-      return FFDefault.enableStripe;
-    }
-  }
-
-  bool enablePasskey() {
-    try {
-      if (isInternalUserOrDebugBuild()) {
-        return true;
-      }
-      return _getFeatureFlags().enablePasskey;
-    } catch (e) {
-      _logger.info('error in enablePasskey check', e);
-      return FFDefault.enablePasskey;
-    }
-  }
-
-  bool isInternalUserOrDebugBuild() {
-    final String? email = Configuration.instance.getEmail();
-    final userID = Configuration.instance.getUserID();
-    return (email != null && email.endsWith("@ente.io")) ||
-        _internalUserIDs.contains(userID) ||
-        kDebugMode;
-  }
-
-  Future<void> fetchFeatureFlags() async {
-    try {
-      final response = await NetworkClient.instance
-          .getDio()
-          .get("https://static.ente.io/feature_flags.json");
-      final flagsResponse = FeatureFlags.fromMap(response.data);
-      await _prefs.setString(_featureFlagsKey, flagsResponse.toJson());
-      _featureFlags = flagsResponse;
-    } catch (e) {
-      _logger.severe("Failed to sync feature flags ", e);
-    }
-  }
-}
-
-class FeatureFlags {
-  static FeatureFlags defaultFlags = FeatureFlags(
-    disableCFWorker: FFDefault.disableCFWorker,
-    enableStripe: FFDefault.enableStripe,
-    enablePasskey: FFDefault.enablePasskey,
-  );
-
-  final bool disableCFWorker;
-  final bool enableStripe;
-  final bool enablePasskey;
-
-  FeatureFlags({
-    required this.disableCFWorker,
-    required this.enableStripe,
-    required this.enablePasskey,
-  });
-
-  Map<String, dynamic> toMap() {
-    return {
-      "disableCFWorker": disableCFWorker,
-      "enableStripe": enableStripe,
-      "enablePasskey": enablePasskey,
-    };
-  }
-
-  String toJson() => json.encode(toMap());
-
-  factory FeatureFlags.fromJson(String source) =>
-      FeatureFlags.fromMap(json.decode(source));
-
-  factory FeatureFlags.fromMap(Map<String, dynamic> json) {
-    return FeatureFlags(
-      disableCFWorker: json["disableCFWorker"] ?? FFDefault.disableCFWorker,
-      enableStripe: json["enableStripe"] ?? FFDefault.enableStripe,
-      enablePasskey: json["enablePasskey"] ?? FFDefault.enablePasskey,
-    );
-  }
-}