A complete authentication example for Flutter and Firebase

Authy contains multiple methods of authentication, each with their own requirments.

• Create a Firebase project
• Add your own google-services.json file by following https://firebase.flutter.dev/docs/installation/android
• Add your own GoogleService-Info.plist by following https://firebase.flutter.dev/docs/installation/ios
• Enable Cloud Firestore on your firebase project panel and set database rules to allow read, write: if request.auth.uid != null;

• From the Authentication portion of your firebase project panel, enable email/password authentication under the sign-in method tab.

• From the Authentication portion of your firebase project panel, enable Facebook authentication under the sign-in method tab.
• Fill in App ID and App Secret with Values from your Facebook App.

• From the Authentication portion of your firebase project panel, enable Apple authentication under the sign-in method tab, you do not need to fill in any of the additional fields.
• Must have an Apple Developer account
• Change the bundleId to a unique value by opening the ios folder in xcode and selecting the general tab.
• Must be run on an IOS device or simulator (Apple Signin will not show on an android device in this app).
• IOS Device or simulator must be signed into icloud and have two factor authentication.
• Several people have reported (and I also have encountered) problems with running apple signin using XCode 12 and a simulator running IOS 14.

• Enable Apple Push Notifications
• Create FCM Key