Check for an existing user?

[PaulCombal]

As described here: https://developers.google.com/identity/sign-in/android/sign-in#check_for_an_existing_signed-in_user

I'm using this and that works great, I would love if this could make its way to a future release in some shape or form. See if you want to add modularity:

GoogleAuth.java:

  @PluginMethod()
  public void signIn(PluginCall call) {
    GoogleSignInAccount account = GoogleSignIn.getLastSignedInAccount(this.getContext());
    if (null == account) {
      saveCall(call);
      Intent signInIntent = googleSignInClient.getSignInIntent();
      startActivityForResult(call, signInIntent, RC_SIGN_IN);
    } else {
      JSObject user = this.accountToJSObject(account);
      call.success(user);
    }
  }

...

  public JSObject accountToJSObject(GoogleSignInAccount account) {
    JSObject authentication = new JSObject();
    authentication.put("idToken", account.getIdToken());

    JSObject user = new JSObject();
    user.put("serverAuthCode", account.getServerAuthCode());
    user.put("idToken", account.getIdToken());
    user.put("authentication", authentication);

    user.put("displayName", account.getDisplayName());
    user.put("email", account.getEmail());
    user.put("familyName", account.getFamilyName());
    user.put("givenName", account.getGivenName());
    user.put("id", account.getId());
    user.put("imageUrl", account.getPhotoUrl());

    return  user;
  }

...

  private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
    PluginCall signInCall = getSavedCall();

    if (signInCall == null) return;

    try {
      GoogleSignInAccount account = completedTask.getResult(ApiException.class);
      JSObject user = this.accountToJSObject(account);
      signInCall.success(user);
    }
    catch (ApiException e) {
      signInCall.error("Something went wrong", e);
    }
  }

Sorry, I'm getting tired, and I wish to go to sleep more than open a proper pull request. This implementation avoids having the native popup show and immediately disappear when asking for a new IdToken.

[PaulCombal]

Would be closed with https://github.com/CodetrixStudio/CapacitorGoogleAuth/pull/78/

[PaulCombal]

Closing, stale