added firebase_analytics

lib/application_wrapper.dart

@@ -1,4 +1,6 @@
 import 'package:flutter/material.dart';
+import 'package:lightmeter/data/analytics/analytics.dart';
+import 'package:lightmeter/data/analytics/api/analytics_firebase.dart';
 import 'package:lightmeter/data/caffeine_service.dart';
 import 'package:lightmeter/data/haptics_service.dart';
 import 'package:lightmeter/data/light_sensor_service.dart';
@@ -36,6 +38,7 @@ class ApplicationWrapper extends StatelessWidget {
           final userPreferencesService = UserPreferencesService(snapshot.data![0] as SharedPreferences);
           final hasLightSensor = snapshot.data![1] as bool;
           return ServicesProvider(
+            analytics: const LightmeterAnalytics(api: LightmeterAnalyticsFirebase()),
             caffeineService: const CaffeineService(),
             environment: env.copyWith(hasLightSensor: hasLightSensor),
             hapticsService: const HapticsService(),

lib/data/analytics/analytics.dart

@@ -0,0 +1,34 @@
+import 'dart:async';
+import 'dart:developer';
+
+import 'package:flutter/foundation.dart';
+import 'package:lightmeter/data/analytics/api/analytics_api_interface.dart';
+import 'package:lightmeter/data/analytics/entity/analytics_event.dart';
+
+class LightmeterAnalytics {
+  final ILightmeterAnalyticsApi _api;
+
+  const LightmeterAnalytics({required ILightmeterAnalyticsApi api}) : _api = api;
+
+  Future<void> logEvent(
+    LightmeterAnalyticsEvent event, {
+    Map<String, dynamic>? parameters,
+  }) async {
+    if (kDebugMode) {
+      log('<LightmeterAnalytics> logEvent: ${event.name} / $parameters');
+      return;
+    }
+
+    return _api.logEvent(
+      event: event,
+      parameters: parameters,
+    );
+  }
+
+  Future<void> logProFeaturesPurchaseAttempt(String purchaseButtonText) async {
+    return logEvent(
+      LightmeterAnalyticsEvent.unlockProFeatures,
+      parameters: {"purchaseButtonText": purchaseButtonText},
+    );
+  }
+}

lib/data/analytics/api/analytics_api_interface.dart

@@ -0,0 +1,8 @@
+import 'package:lightmeter/data/analytics/entity/analytics_event.dart';
+
+abstract class ILightmeterAnalyticsApi {
+  Future<void> logEvent({
+    required LightmeterAnalyticsEvent event,
+    Map<String, dynamic>? parameters,
+  });
+}

lib/data/analytics/api/analytics_firebase.dart

@@ -0,0 +1,26 @@
+import 'package:firebase_analytics/firebase_analytics.dart';
+import 'package:firebase_core/firebase_core.dart';
+import 'package:flutter/foundation.dart';
+import 'package:lightmeter/data/analytics/api/analytics_api_interface.dart';
+import 'package:lightmeter/data/analytics/entity/analytics_event.dart';
+
+class LightmeterAnalyticsFirebase implements ILightmeterAnalyticsApi {
+  const LightmeterAnalyticsFirebase();
+
+  @override
+  Future<void> logEvent({
+    required LightmeterAnalyticsEvent event,
+    Map<String, dynamic>? parameters,
+  }) async {
+    try {
+      await FirebaseAnalytics.instance.logEvent(
+        name: event.name,
+        parameters: parameters,
+      );
+    } on FirebaseException catch (e) {
+      debugPrint('Firebase Analytics Exception: $e');
+    } catch (e) {
+      debugPrint(e.toString());
+    }
+  }
+}

lib/data/analytics/entity/analytics_event.dart

@@ -0,0 +1,3 @@
+enum LightmeterAnalyticsEvent {
+  unlockProFeatures,
+}

lib/providers/services_provider.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:lightmeter/data/analytics/analytics.dart';
 import 'package:lightmeter/data/caffeine_service.dart';
 import 'package:lightmeter/data/haptics_service.dart';
 import 'package:lightmeter/data/light_sensor_service.dart';
@@ -10,6 +11,7 @@ import 'package:lightmeter/environment.dart';
 
 // coverage:ignore-start
 class ServicesProvider extends InheritedWidget {
+  final LightmeterAnalytics analytics;
   final CaffeineService caffeineService;
   final Environment environment;
   final HapticsService hapticsService;
@@ -20,6 +22,7 @@ class ServicesProvider extends InheritedWidget {
   final VolumeEventsService volumeEventsService;
 
   const ServicesProvider({
+    required this.analytics,
     required this.caffeineService,
     required this.environment,
     required this.hapticsService,

lib/screens/settings/components/utils/show_buy_pro_dialog.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:lightmeter/data/models/feature.dart';
 import 'package:lightmeter/generated/l10n.dart';
 import 'package:lightmeter/providers/remote_config_provider.dart';
+import 'package:lightmeter/providers/services_provider.dart';
 import 'package:lightmeter/res/dimens.dart';
 import 'package:m3_lightmeter_iap/m3_lightmeter_iap.dart';
 
@@ -29,6 +30,9 @@ Future<void> showBuyProDialog(BuildContext context) {
           onPressed: () {
             Navigator.of(context).pop();
             IAPProductsProvider.of(context).buy(IAPProductType.paidFeatures);
+            ServicesProvider.of(context)
+                .analytics
+                .logProFeaturesPurchaseAttempt(unlockFeaturesEnabled ? "Unlock" : "Buy");
           },
           child: Text(unlockFeaturesEnabled ? S.of(context).unlock : S.of(context).buy),
         ),

pubspec.yaml

@@ -13,6 +13,7 @@ dependencies:
   clipboard: 0.1.3
   dynamic_color: 1.6.6
   exif: 3.1.4
+  firebase_analytics: 10.6.2
   firebase_core: 2.20.0
   firebase_crashlytics: 3.4.2
   firebase_remote_config: 4.3.2