Add analytics user properties for Sharezone Plus.

app/lib/main/sharezone_bloc_providers.dart

@@ -322,6 +322,8 @@ class _SharezoneBlocProvidersState extends State<SharezoneBlocProviders> {
       user: api.user.userStream,
       functions: widget.blocDependencies.functions,
     );
+    trySetSharezonePlusAnalyticsUserProperties(
+        analytics, crashAnalytics, subscriptionService);
 
     final feedbackApi = FirebaseFeedbackApi(firestore);
 

app/lib/sharezone_plus/subscription_service/subscription_service.dart

@@ -8,7 +8,9 @@
 
 import 'dart:async';
 
+import 'package:analytics/analytics.dart';
 import 'package:cloud_functions/cloud_functions.dart';
+import 'package:crash_analytics/crash_analytics.dart';
 import 'package:user/user.dart';
 
 class SubscriptionService {
@@ -79,3 +81,34 @@ enum SharezonePlusFeature {
   viewPastEvents,
   homeworkDueDateChips,
 }
+
+void trySetSharezonePlusAnalyticsUserProperties(Analytics analytics,
+    CrashAnalytics crashAnalytics, SubscriptionService subscriptionService) {
+  try {
+    subscriptionService.sharezonePlusStatusStream.listen((final status) {
+      if (status != null) {
+        analytics.setUserProperty(
+          name: 'has_plus',
+          value: status.hasPlus.toString(),
+        );
+        if (status.hasPlus) {
+          if (status.period != null) {
+            analytics.setUserProperty(
+              name: 'plus_period',
+              value: status.period!,
+            );
+          }
+          var source = status.source ?? SubscriptionSource.unknown;
+          analytics.setUserProperty(
+            name: 'plus_source',
+            value: source.stableAnalyticsKey,
+          );
+        }
+      }
+    });
+  } catch (e) {
+    crashAnalytics
+        .log('Error setting user properties regarding Sharezone Plus: $e');
+    crashAnalytics.recordError(e, StackTrace.current);
+  }
+}

lib/user/lib/src/models/sharezone_plus_status.dart

@@ -21,13 +21,15 @@ class SharezonePlusStatus {
   final SubscriptionSource? source;
 
   /// Whether the user has a lifetime subscription.
-  final bool hasLifetime;
+  bool get hasLifetime => period == 'lifetime';
+
+  final String? period;
 
   const SharezonePlusStatus({
     required this.hasPlus,
     required this.isCancelled,
     required this.source,
-    required this.hasLifetime,
+    required this.period,
   });
 
   static SharezonePlusStatus? fromData(Map<String, dynamic>? map) {
@@ -40,7 +42,7 @@ class SharezonePlusStatus {
       hasPlus: map['hasPlus'] ?? false,
       isCancelled: map['isCancelled'] ?? false,
       source: parseSource(map['subscriptionDetails']),
-      hasLifetime: map['period'] == 'lifetime',
+      period: map['period'],
     );
   }
 
@@ -61,6 +63,7 @@ class SharezonePlusStatus {
         other.hasPlus == hasPlus &&
         other.isCancelled == isCancelled &&
         other.source == source &&
+        other.period == period &&
         other.hasLifetime == hasLifetime;
   }
 
@@ -69,17 +72,22 @@ class SharezonePlusStatus {
     return hasPlus.hashCode ^
         isCancelled.hashCode ^
         source.hashCode ^
+        period.hashCode ^
         hasLifetime.hashCode;
   }
 }
 
 enum SubscriptionSource {
-  playStore('Play Store'),
-  appStore('App Store'),
-  stripe('Stripe'),
-  unknown('Unknown');
+  playStore(uiString: 'Play Store', stableAnalyticsKey: 'playstore'),
+  appStore(uiString: 'App Store', stableAnalyticsKey: 'appstore'),
+  stripe(uiString: 'Stripe', stableAnalyticsKey: 'stripe'),
+  unknown(uiString: 'Unknown', stableAnalyticsKey: 'unknown');
 
-  const SubscriptionSource(this.uiString);
+  const SubscriptionSource({
+    required this.uiString,
+    required this.stableAnalyticsKey,
+  });
 
   final String uiString;
+  final String stableAnalyticsKey;
 }