package io.makeroid.suryaprakashlokula.PhoneAuth; import com.google.appinventor.components.annotations.DesignerComponent; import com.google.appinventor.components.annotations.DesignerProperty; import com.google.appinventor.components.annotations.PropertyCategory; import com.google.appinventor.components.annotations.SimpleEvent; import com.google.appinventor.components.annotations.SimpleFunction; import com.google.appinventor.components.annotations.SimpleObject; import com.google.appinventor.components.annotations.SimpleProperty; import com.google.appinventor.components.annotations.UsesPermissions; import com.google.appinventor.components.common.ComponentCategory; import com.google.appinventor.components.common.PropertyTypeConstants; import com.google.appinventor.components.runtime.AndroidNonvisibleComponent; import com.google.appinventor.components.runtime.ComponentContainer; @DesignerComponent( version = 1, description = "Access the firebase Authentication", category = ComponentCategory.EXTENSION, nonVisible = true, iconName = "https://ide.kodular.io/assets/logo.png") @SimpleObject(external = true) public final class NewExtension extends AndroidNonvisibleComponent; public NewExtension(ComponentContainer container) { super(container.$form()); } public class FirebasePhoneNumAuthActivity extends AppCompatActivity { private static String uniqueIdentifier = null; private static final String UNIQUE_ID = "UNIQUE_ID"; private static final long ONE_HOUR_MILLI = 60*60*1000; private static final String TAG = "FirebasePhoneNumAuth"; private PhoneAuthProvider.OnVerificationStateChangedCallbacks callbacks; private FirebaseAuth firebaseAuth; private String phoneNumber; private Button sendCodeButton; private Button verifyCodeButton; private Button signOutButton; private EditText phoneNum; private EditText verifyCodeET; private FirebaseFirestore firestoreDB; private FirebaseUser firebaseUser; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.firebase_phone_auth_layout); sendCodeButton = findViewById(R.id.send_code_b); verifyCodeButton = findViewById(R.id.verify_code_b); signOutButton = findViewById(R.id.auth_logout_b); phoneNum = findViewById(R.id.phone); verifyCodeET = findViewById(R.id.phone_auth_code); addOnClickListeners(); firebaseAuth = FirebaseAuth.getInstance(); firestoreDB = FirebaseFirestore.getInstance(); createCallback(); getInstallationIdentifier(); getVerificationDataFromFirestoreAndVerify(null); } private void addOnClickListeners() { sendCodeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { verifyPhoneNumberInit(); } }); verifyCodeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { verifyPhoneNumberCode(); } }); signOutButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { signOut(); } }); } private void createCallback() { callbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() { @Override public void onVerificationCompleted(PhoneAuthCredential credential) { Log.d(TAG, "verification completed" + credential); signInWithPhoneAuthCredential(credential); } @Override public void onVerificationFailed(FirebaseException e) { Log.w(TAG, "verification failed", e); if (e instanceof FirebaseAuthInvalidCredentialsException) { phoneNum.setError("Invalid phone number."); } else if (e instanceof FirebaseTooManyRequestsException) { Toast.makeText(FirebasePhoneNumAuthActivity.this, "Trying too many timeS", Toast.LENGTH_SHORT).show(); } } @Override public void onCodeSent(String verificationId, PhoneAuthProvider.ForceResendingToken token) { Log.d(TAG, "code sent " + verificationId); addVerificationDataToFirestore(phoneNumber, verificationId); } }; } private boolean validatePhoneNumber(String phoneNumber) { if (TextUtils.isEmpty(phoneNumber)) { phoneNum.setError("Invalid phone number."); return false; } return true; } private void verifyPhoneNumberInit() { phoneNumber = phoneNum.getText().toString(); if (!validatePhoneNumber(phoneNumber)) { return; } verifyPhoneNumber(phoneNumber); } private void verifyPhoneNumber(String phno){ PhoneAuthProvider.getInstance().verifyPhoneNumber(phno, 70, TimeUnit.SECONDS, this, callbacks); } private void verifyPhoneNumberCode() { final String phone_code = verifyCodeET.getText().toString(); getVerificationDataFromFirestoreAndVerify(phone_code); } private void signInWithPhoneAuthCredential(PhoneAuthCredential credential) { firebaseAuth.signInWithCredential(credential) .addOnCompleteListener(this, new OnCompleteListener() { @Override public void onComplete(@NonNull Task task) { if (task.isSuccessful()) { Log.d(TAG, "code verified signIn successful"); firebaseUser = task.getResult().getUser(); showSingInButtons(); } else { Log.w(TAG, "code verification failed", task.getException()); if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) { verifyCodeET.setError("Invalid code."); } } } }); } private void createCredentialSignIn(String verificationId, String verifyCode) { PhoneAuthCredential credential = PhoneAuthProvider. getCredential(verificationId, verifyCode); signInWithPhoneAuthCredential(credential); } private void signOut() { firebaseAuth.signOut(); showSendCodeButton(); } private void addVerificationDataToFirestore(String phone, String verificationId) { Map verifyMap = new HashMap(); verifyMap.put("phone", phone); verifyMap.put("verificationId", verificationId); verifyMap.put("timestamp",System.currentTimeMillis()); firestoreDB.collection("phoneAuth").document(uniqueIdentifier) .set(verifyMap) .addOnSuccessListener(new OnSuccessListener() { @Override public void onSuccess(DocumentReference documentReference) { Log.d(TAG, "phone auth info added to db "); } }) .addOnFailureListener(new OnFailureListener() { @Override public void onFailure(@NonNull Exception e) { Log.w(TAG, "Error adding phone auth info", e); } }); } private void getVerificationDataFromFirestoreAndVerify(final String code) { initButtons(); firestoreDB.collection("phoneAuth").document(uniqueIdentifier) .get() .addOnCompleteListener(new OnCompleteListener() { @Override public void onComplete(@NonNull Task task) { if (task.isSuccessful()) { DocumentSnapshot ds = task.getResult(); if(ds.exists()){ disableSendCodeButton(ds.getLong("timestamp")); if(code != null){ createCredentialSignIn(ds.getString("verificationId"), code); }else{ verifyPhoneNumber(ds.getString("phone")); } }else{ showSendCodeButton(); Log.d(TAG, "Code hasn't been sent yet"); } } else { Log.d(TAG, "Error getting document: ", task.getException()); } } }); } public synchronized String getInstallationIdentifier() { if (uniqueIdentifier == null) { SharedPreferences sharedPrefs = this.getSharedPreferences( UNIQUE_ID, Context.MODE_PRIVATE); uniqueIdentifier = sharedPrefs.getString(UNIQUE_ID, null); if (uniqueIdentifier == null) { uniqueIdentifier = UUID.randomUUID().toString(); SharedPreferences.Editor editor = sharedPrefs.edit(); editor.putString(UNIQUE_ID, uniqueIdentifier); editor.commit(); } } return uniqueIdentifier; } private void disableSendCodeButton(long codeSentTimestamp){ long timeElapsed = System.currentTimeMillis()- codeSentTimestamp; if(timeElapsed > ONE_HOUR_MILLI){ showSendCodeButton(); }else{ findViewById(R.id.phone_auth_items).setVisibility(View.GONE); findViewById(R.id.phone_auth_code_items).setVisibility(View.VISIBLE); findViewById(R.id.logout_items).setVisibility(View.GONE); } } private void showSendCodeButton(){ findViewById(R.id.phone_auth_items).setVisibility(View.VISIBLE); findViewById(R.id.phone_auth_code_items).setVisibility(View.GONE); findViewById(R.id.logout_items).setVisibility(View.GONE); } private void showSingInButtons(){ findViewById(R.id.phone_auth_items).setVisibility(View.GONE); findViewById(R.id.phone_auth_code_items).setVisibility(View.GONE); findViewById(R.id.logout_items).setVisibility(View.VISIBLE); } private void initButtons(){ findViewById(R.id.phone_auth_items).setVisibility(View.GONE); findViewById(R.id.phone_auth_code_items).setVisibility(View.GONE); findViewById(R.id.logout_items).setVisibility(View.GONE); } }