log analytics events (#47)

app/radio_qth_map/lib/main.dart

@@ -1,4 +1,5 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/foundation.dart';
@@ -49,17 +50,20 @@ void main() async {
  } else {
  defaultLocale = const Locale("en");
  }
+ final analytics = FirebaseAnalytics.instance;
  final prefs = await SharedPreferences.getInstance();
  runApp(
  MultiProvider(
  providers: [
+ Provider(create: (_) => analytics),
  Provider(
  create: (_) => FirestoreRepository(firestore: firestore),
  ),
  ChangeNotifierProvider(create: (_) => LocaleNotifier(defaultLocale)),
  ChangeNotifierProvider(
  create: (_) => AuthStateNotifier(
  auth: auth,
+ analytics: analytics,
  prefs: prefs,
  )),
  ],

app/radio_qth_map/lib/repository/auth_state_notifier.dart

@@ -1,13 +1,16 @@
+import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 class AuthStateNotifier extends ChangeNotifier {
  final FirebaseAuth auth;
+ final FirebaseAnalytics analytics;
  final SharedPreferences prefs;
 
  AuthStateNotifier({
  required this.auth,
+ required this.analytics,
  required this.prefs,
  }) {
  auth.authStateChanges().listen((_) {
@@ -21,7 +24,13 @@ class AuthStateNotifier extends ChangeNotifier {
  return null;
  }
  try {
- await auth.signInWithEmailLink(email: email, emailLink: emailLink);
+ final cred =
+ await auth.signInWithEmailLink(email: email, emailLink: emailLink);
+ if (cred.additionalUserInfo?.isNewUser == true) {
+ analytics.logSignUp(signUpMethod: "emailLink");
+ } else {
+ analytics.logLogin(loginMethod: "emailLink");
+ }
  } catch (e) {
  debugPrint('Failed to sign in with email link: $e');
  } finally {

app/radio_qth_map/lib/screen/add_operation_screen.dart

@@ -1,5 +1,6 @@
 import 'package:file_picker/_internal/file_picker_web.dart';
 import 'package:file_picker/file_picker.dart';
+import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
@@ -64,6 +65,7 @@ class _AddOperationScreenState extends State<AddOperationScreen> {
  : () async {
  final repository = context.read<FirestoreRepository>();
  final auth = context.read<AuthStateNotifier>().auth;
+ final analytics = context.read<FirebaseAnalytics>();
  // コールサインの表示設定を変更してから保存する
  final id = await repository.storeOperations(
  _logList
@@ -75,6 +77,16 @@ class _AddOperationScreenState extends State<AddOperationScreen> {
  .toList(),
  ownerId: auth.currentUser?.uid,
  );
+ analytics.setUserProperty(
+ name: "operation_added",
+ value: "true",
+ );
+ analytics.logEvent(
+ name: "operation_added",
+ parameters: {
+ "operation_id": id,
+ },
+ );
  if (context.mounted) {
  context.pop(id);
  }

app/radio_qth_map/lib/screen/share_operation_dialog.dart

@@ -1,3 +1,4 @@
+import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
@@ -17,6 +18,7 @@ class ShareOperationDialog extends StatelessWidget {
  Widget build(BuildContext context) {
  final repository = context.read<FirestoreRepository>();
  final dateFormat = DateFormat.yMd(AppLocalizations.of(context)!.localeName);
+ final analytics = context.read<FirebaseAnalytics>();
  return AlertDialog(
  title: Text(AppLocalizations.of(context)!.share),
  content: FutureBuilder(
@@ -36,6 +38,11 @@ class ShareOperationDialog extends StatelessWidget {
  children: [
  FilledButton.tonalIcon(
  onPressed: () {
+ analytics.logShare(
+ contentType: "operation",
+ itemId: operationId,
+ method: "X",
+ );
  final url = '${Uri.base.origin}/map/${operation.id!}';
  launchUrlString(
  'https://twitter.com/intent/tweet?text=${Uri.encodeComponent(shareText)}&hashtags=QTHMap&url=${Uri.encodeComponent(url)}');
@@ -52,6 +59,11 @@ class ShareOperationDialog extends StatelessWidget {
  const SizedBox(height: 16),
  FilledButton.tonalIcon(
  onPressed: () async {
+ analytics.logShare(
+ contentType: "operation",
+ itemId: operationId,
+ method: "clipboard",
+ );
  final text = """
 $shareText
 ${Uri.base.origin}/map/${operation.id!}

app/radio_qth_map/lib/widget/operation_map.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:intl/intl.dart';
@@ -263,7 +264,12 @@ class OperationMapState extends State<OperationMap>
 
  void _showOperationDetail() async {
  assert(_selectedOperation != null);
+ final analytics = context.read<FirebaseAnalytics>();
  final operation = _selectedOperation!;
+ analytics.logSelectContent(
+ contentType: "operation",
+ itemId: operation.id!,
+ );
  final sheetController = showBottomSheet(
  context: context,
  builder: (context) {
@@ -304,7 +310,14 @@ class OperationMapState extends State<OperationMap>
  onPressed: () async {
  final repository =
  context.read<FirestoreRepository>();
+ final analytics = context.read<FirebaseAnalytics>();
  await repository.deleteOperation(operation.id!);
+ analytics.logEvent(
+ name: "operation_deleted",
+ parameters: {
+ "operation_id": operation.id,
+ },
+ );
  if (context.mounted) {
  Navigator.pop(context);
  ScaffoldMessenger.of(context).showSnackBar(
@@ -323,6 +336,12 @@ class OperationMapState extends State<OperationMap>
  .deleted_operation_snackbar_action_undo,
  onPressed: () async {
  await repository.undoDeletion(operation);
+ analytics.logEvent(
+ name: "operation_deleted_undo",
+ parameters: {
+ "operation_id": operation.id,
+ },
+ );
  },
  ),
  ),