Sentry: Add error breadcrumbs

This way we will have some context as to why an error happened.

lib/analytics.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/foundation.dart';
 
 import 'package:gitjournal/app.dart';
+import 'package:gitjournal/error_reporting.dart';
 import 'package:firebase_analytics/firebase_analytics.dart';
 
 Analytics getAnalytics() {
@@ -9,15 +10,18 @@ Analytics getAnalytics() {
 
 class Analytics {
   FirebaseAnalytics firebase;
+  bool enabled = false;
 
   Future<void> logEvent({
     @required String name,
     Map<String, dynamic> parameters,
   }) async {
-    return firebase.logEvent(name: name, parameters: parameters);
+    await firebase.logEvent(name: name, parameters: parameters);
+    captureErrorBreadcrumb(name: name, parameters: parameters);
   }
 
   Future<void> setAnalyticsCollectionEnabled(bool enabled) async {
+    this.enabled = enabled;
     return firebase.setAnalyticsCollectionEnabled(enabled);
   }
 }

lib/app.dart

@@ -1,7 +1,6 @@
 import 'dart:io';
 
 import 'package:device_info/device_info.dart';
-import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_analytics/observer.dart';
 import 'package:flutter/material.dart';
 import 'package:gitjournal/analytics.dart';

lib/error_reporting.dart

@@ -93,15 +93,7 @@ Future<void> initCrashlytics() async {
 
 Future<void> reportError(Object error, StackTrace stackTrace) async {
   if (reportCrashes) {
-    try {
-      final sentry = await getSentryClient();
-      sentry.captureException(
-        exception: error,
-        stackTrace: stackTrace,
-      );
-    } catch (e) {
-      print("Failed to report with Sentry: $e");
-    }
+    captureSentryException(error, stackTrace);
   }
 
   print("Uncaught Exception: $error");
@@ -113,15 +105,34 @@ Future<void> logException(Exception e, StackTrace stackTrace) async {
     return;
   }
 
+  await captureSentryException(e, stackTrace);
+  return FlutterCrashlytics().logException(e, stackTrace);
+}
+
+List<Breadcrumb> breadcrumbs = [];
+
+void captureErrorBreadcrumb({
+  @required String name,
+  Map<String, dynamic> parameters,
+}) {
+  var b = Breadcrumb(name, DateTime.now(), data: parameters);
+  breadcrumbs.add(b);
+}
+
+Future<void> captureSentryException(
+  Exception exception,
+  StackTrace stackTrace,
+) async {
   try {
     final sentry = await getSentryClient();
-    await sentry.captureException(
-      exception: e,
+    final Event event = Event(
+      exception: exception,
       stackTrace: stackTrace,
+      breadcrumbs: breadcrumbs,
     );
+
+    return sentry.capture(event: event);
   } catch (e) {
     print("Failed to report with Sentry: $e");
   }
-
-  return FlutterCrashlytics().logException(e, stackTrace);
 }