Phone number hint and retrieve SMS

app/build.gradle

@@ -316,6 +316,8 @@ dependencies {
     implementation "com.google.android.gms:play-services-maps:18.1.0"
     implementation "com.google.android.gms:play-services-location:21.0.1"
     implementation "com.google.android.gms:play-services-cronet:${googlePlayServicesVersion}"
+    implementation 'com.google.android.gms:play-services-auth:20.6.0'
+    implementation "com.google.android.gms:play-services-auth-api-phone:${googlePlayServicesVersion}"
     implementation "com.google.zxing:core:${zxingVersion}"
     implementation "com.github.tougee:sticky-headers-recyclerview:${stickyheadersrecyclerviewVersion}"
     implementation "org.whispersystems:signal-protocol-android:${signalVersion}"

app/src/main/AndroidManifest.xml

@@ -488,6 +488,13 @@
                 <action android:name="android.intent.action.TIMEZONE_CHANGED" />
             </intent-filter>
         </receiver>
+        <receiver android:name=".receiver.SMSReceiver"
+            android:exported="true"
+            android:permission="com.google.android.gms.auth.api.phone.permission.SEND">
+            <intent-filter>
+                <action android:name="com.google.android.gms.auth.api.phone.SMS_RETRIEVED"/>
+            </intent-filter>
+        </receiver>
 
         <provider
             android:name="androidx.startup.InitializationProvider"

app/src/main/java/one/mixin/android/receiver/SMSReceiver.kt

@@ -0,0 +1,39 @@
+package one.mixin.android.receiver
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import com.google.android.gms.auth.api.phone.SmsRetriever
+import com.google.android.gms.common.api.CommonStatusCodes
+import com.google.android.gms.common.api.Status
+import one.mixin.android.extension.getParcelableCompat
+import timber.log.Timber
+
+class SMSReceiver : BroadcastReceiver() {
+    companion object {
+        var smsListener: SMSListener? = null
+    }
+
+    override fun onReceive(context: Context, intent: Intent?) {
+        if (SmsRetriever.SMS_RETRIEVED_ACTION != intent?.action) return
+        val extras = intent.extras ?: return
+        val status = extras.getParcelableCompat(SmsRetriever.EXTRA_STATUS, Status::class.java) ?: return
+
+        when (status.statusCode) {
+            CommonStatusCodes.SUCCESS -> {
+                val message = extras.getString(SmsRetriever.EXTRA_SMS_MESSAGE) ?: return
+                smsListener?.onSuccess(message)
+            }
+            CommonStatusCodes.TIMEOUT -> {
+                val msg = "SMSReceiver Waiting for SMS timed out (5 minutes)"
+                smsListener?.onError(msg)
+                Timber.d(msg)
+            }
+        }
+    }
+}
+
+interface SMSListener {
+    fun onSuccess(message: String)
+    fun onError(message: String)
+}

app/src/main/java/one/mixin/android/ui/landing/MobileFragment.kt

@@ -12,9 +12,14 @@ import android.view.View.GONE
 import android.view.View.VISIBLE
 import android.view.ViewGroup
 import android.view.ViewGroup.LayoutParams.MATCH_PARENT
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.IntentSenderRequest
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.core.view.isVisible
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.lifecycleScope
+import com.google.android.gms.auth.api.identity.GetPhoneNumberHintIntentRequest
+import com.google.android.gms.auth.api.identity.Identity
 import com.google.i18n.phonenumbers.PhoneNumberUtil
 import com.google.i18n.phonenumbers.Phonenumber
 import com.mukesh.countrypicker.Country
@@ -95,6 +100,27 @@ class MobileFragment : BaseFragment(R.layout.fragment_mobile) {
         }
     }
 
+    @SuppressLint("SetTextI18n")
+    private val phoneNumberHintIntentResultLauncher: ActivityResultLauncher<IntentSenderRequest> = registerForActivityResult(
+        ActivityResultContracts.StartIntentSenderForResult(),
+    ) { result ->
+        try {
+            val phoneNumberString = Identity.getSignInClient(requireActivity()).getPhoneNumberFromIntent(result.data)
+            val number = phoneUtil.parse(phoneNumberString, null)
+            if (!phoneUtil.isValidNumber(number)) {
+                return@registerForActivityResult
+            }
+            if (viewDestroyed()) return@registerForActivityResult
+
+            binding.apply {
+                countryCodeEt.setText("+${number.countryCode}")
+                mobileEt.setText(number.nationalNumber.toString())
+            }
+        } catch (e: Exception) {
+            Timber.d(e)
+        }
+    }
+
     @SuppressLint("JavascriptInterface", "SetJavaScriptEnabled")
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -139,6 +165,8 @@ class MobileFragment : BaseFragment(R.layout.fragment_mobile) {
             keyboard.setOnClickKeyboardListener(mKeyboardListener)
             keyboard.animate().translationY(0f).start()
         }
+
+        requestHint()
     }
 
     override fun onBackPressed(): Boolean {
@@ -169,6 +197,20 @@ class MobileFragment : BaseFragment(R.layout.fragment_mobile) {
             .show()
     }
 
+    private fun requestHint() {
+        val request: GetPhoneNumberHintIntentRequest = GetPhoneNumberHintIntentRequest.builder().build()
+        Identity.getSignInClient(requireActivity())
+            .getPhoneNumberHintIntent(request)
+            .addOnSuccessListener {
+                phoneNumberHintIntentResultLauncher.launch(
+                    IntentSenderRequest.Builder(it.intentSender).build(),
+                )
+            }
+            .addOnFailureListener {
+                Timber.d(it)
+            }
+    }
+
     private fun requestSend(captchaResponse: Pair<CaptchaView.CaptchaType, String>? = null) {
         if (viewDestroyed()) return
 

app/src/main/java/one/mixin/android/ui/landing/VerificationFragment.kt

@@ -13,6 +13,7 @@ import androidx.core.os.bundleOf
 import androidx.core.view.isVisible
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.lifecycleScope
+import com.google.android.gms.auth.api.phone.SmsRetriever
 import com.uber.autodispose.autoDispose
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.Dispatchers
@@ -36,6 +37,8 @@ import one.mixin.android.extension.defaultSharedPreferences
 import one.mixin.android.extension.navTo
 import one.mixin.android.extension.openUrl
 import one.mixin.android.extension.putInt
+import one.mixin.android.receiver.SMSListener
+import one.mixin.android.receiver.SMSReceiver
 import one.mixin.android.session.Session
 import one.mixin.android.tip.exception.TipNetworkException
 import one.mixin.android.ui.common.PinCodeFragment
@@ -53,6 +56,7 @@ import one.mixin.android.util.viewBinding
 import one.mixin.android.vo.User
 import one.mixin.android.widget.BottomSheet
 import one.mixin.android.widget.CaptchaView
+import timber.log.Timber
 
 @AndroidEntryPoint
 class VerificationFragment : PinCodeFragment(R.layout.fragment_verification) {
@@ -105,11 +109,13 @@ class VerificationFragment : PinCodeFragment(R.layout.fragment_verification) {
         binding.verificationResendTv.setOnClickListener { sendVerification() }
         binding.verificationNeedHelpTv.setOnClickListener { showBottom() }
 
+        startRetrieverSMS()
         startCountDown()
     }
 
     override fun onDestroyView() {
         super.onDestroyView()
+        SMSReceiver.smsListener = null
         mCountDownTimer?.cancel()
     }
 
@@ -139,6 +145,25 @@ class VerificationFragment : PinCodeFragment(R.layout.fragment_verification) {
         viewModel.insertUser(u)
     }
 
+    private fun startRetrieverSMS() {
+        SmsRetriever.getClient(requireContext())
+            .startSmsRetriever()
+            .addOnSuccessListener {
+                Timber.d("$TAG startRetrieverSMS success")
+                SMSReceiver.smsListener = object : SMSListener {
+                    override fun onSuccess(message: String) {
+                        Timber.d("$TAG receive SMS message: $message")
+                        // TODO extract code and use
+                    }
+
+                    override fun onError(message: String) {}
+                }
+            }
+            .addOnFailureListener {
+                Timber.d("$TAG startRetrieverSMS failure ${it.stackTraceToString()}")
+            }
+    }
+
     private fun isPhoneModification() = pin != null
 
     @SuppressLint("InflateParams")