add biometrics to confirm digalogbox

app/src/main/java/sh/sar/basedbank/ui/home/HomeActivity.kt

@@ -211,6 +211,7 @@ class HomeActivity : AppCompatActivity() {
             R.id.nav_settings -> show(SettingsFragment())
             else -> Toast.makeText(this, R.string.work_in_progress, Toast.LENGTH_SHORT).show()
         }
+        binding.navigationView.setCheckedItem(itemId)
         val bottomNavIds = setOf(R.id.nav_dashboard, R.id.nav_accounts, R.id.nav_contacts, R.id.nav_transfer, R.id.nav_more)
         if (binding.bottomNavigation.visibility == View.VISIBLE && itemId in bottomNavIds) {
             suppressBottomNavCallback = true

app/src/main/java/sh/sar/basedbank/ui/home/MoreFragment.kt

@@ -17,6 +17,7 @@ class MoreFragment : Fragment() {
     private data class NavItem(val id: Int, @DrawableRes val icon: Int, @StringRes val title: Int)
 
     private val items = listOf(
+        NavItem(R.id.nav_pay_mv_qr,         R.drawable.ic_qr_scan,               R.string.pay_mv_qr),
         NavItem(R.id.nav_activities,        R.drawable.ic_nav_activities,        R.string.nav_activities),
         NavItem(R.id.nav_transfer_history,  R.drawable.ic_nav_transfer_history,  R.string.nav_transfer_history),
         NavItem(R.id.nav_finances,          R.drawable.ic_nav_finances,          R.string.nav_finances),

app/src/main/java/sh/sar/basedbank/ui/home/SettingsSecurityFragment.kt

@@ -36,9 +36,23 @@ class SettingsSecurityFragment : Fragment() {
             .canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_WEAK) == BiometricManager.BIOMETRIC_SUCCESS
         if (canUseBiometrics) {
             binding.rowBiometrics.visibility = View.VISIBLE
-            binding.switchBiometrics.isChecked = prefs.getBoolean("biometrics_enabled", false)
+
+            val unlockEnabled = prefs.getBoolean("biometrics_enabled", false)
+            binding.switchBiometrics.isChecked = unlockEnabled
+            binding.switchBiometricsTransfer.isChecked = prefs.getBoolean("biometrics_transfer_confirm", false)
+            binding.switchBiometricsTransfer.isEnabled = unlockEnabled
+
             binding.switchBiometrics.setOnCheckedChangeListener { _, isChecked ->
                 prefs.edit().putBoolean("biometrics_enabled", isChecked).apply()
+                binding.switchBiometricsTransfer.isEnabled = isChecked
+                if (!isChecked) {
+                    binding.switchBiometricsTransfer.isChecked = false
+                    prefs.edit().putBoolean("biometrics_transfer_confirm", false).apply()
+                }
+            }
+
+            binding.switchBiometricsTransfer.setOnCheckedChangeListener { _, isChecked ->
+                prefs.edit().putBoolean("biometrics_transfer_confirm", isChecked).apply()
             }
         }
 

app/src/main/java/sh/sar/basedbank/ui/home/TransferFragment.kt

@@ -19,6 +19,9 @@ import android.widget.LinearLayout
 import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
+import androidx.biometric.BiometricManager
+import androidx.biometric.BiometricPrompt
+import androidx.core.content.ContextCompat
 import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
@@ -562,29 +565,31 @@ class TransferFragment : Fragment() {
 
         val mainMsg = "Send $currency $amountStr to $destDisplay?\n\nFrom: ${src.accountBriefName} · ${src.accountNumber}"
 
-        val dialogBuilder = AlertDialog.Builder(requireContext())
-            .setTitle(R.string.transfer)
-            .setPositiveButton(R.string.transfer_confirm) { _, _ ->
-                binding.btnTransfer.isEnabled = false
-                viewLifecycleOwner.lifecycleScope.launch {
-                    val (ok, msg, receipt) = withContext(Dispatchers.IO) {
-                        if (!isSrcBml) {
-                            doMibTransfer(src, resolvedAccountNumber, resolvedRecipientName, destDisplay, amountStr, remarks, bankNameCapture)
-                        } else {
-                            doBmlTransfer(src, resolvedAccountNumber, destDisplay, amount, amountStr, remarks, isSrcCard, isDestMib, currency, allAccounts, allContacts)
-                        }
-                    }
-                    binding.btnTransfer.isEnabled = true
-                    if (ok && receipt != null) {
-                        clearForm()
-                        val activity = requireActivity() as HomeActivity
-                        activity.refreshBalances(src)
-                        activity.showWithBackStack(TransferReceiptFragment.newInstance(receipt, capturedToAvatar))
-                    } else if (!ok) {
-                        Toast.makeText(requireContext(), msg, Toast.LENGTH_LONG).show()
+        val doTransfer: () -> Unit = {
+            binding.btnTransfer.isEnabled = false
+            viewLifecycleOwner.lifecycleScope.launch {
+                val (ok, msg, receipt) = withContext(Dispatchers.IO) {
+                    if (!isSrcBml) {
+                        doMibTransfer(src, resolvedAccountNumber, resolvedRecipientName, destDisplay, amountStr, remarks, bankNameCapture)
+                    } else {
+                        doBmlTransfer(src, resolvedAccountNumber, destDisplay, amount, amountStr, remarks, isSrcCard, isDestMib, currency, allAccounts, allContacts)
                     }
                 }
+                binding.btnTransfer.isEnabled = true
+                if (ok && receipt != null) {
+                    clearForm()
+                    val activity = requireActivity() as HomeActivity
+                    activity.refreshBalances(src)
+                    activity.showWithBackStack(TransferReceiptFragment.newInstance(receipt, capturedToAvatar))
+                } else if (!ok) {
+                    Toast.makeText(requireContext(), msg, Toast.LENGTH_LONG).show()
+                }
             }
+        }
+
+        val dialogBuilder = AlertDialog.Builder(requireContext())
+            .setTitle(R.string.transfer)
+            .setPositiveButton(R.string.transfer_confirm) { _, _ -> doTransfer() }
             .setNegativeButton(android.R.string.cancel, null)
 
         if (isUsdToMvr) {
@@ -606,7 +611,39 @@ class TransferFragment : Fragment() {
         } else {
             dialogBuilder.setMessage(mainMsg)
         }
-        dialogBuilder.show()
+
+        val dialog = dialogBuilder.show()
+
+        val prefs = requireContext().getSharedPreferences("prefs", Context.MODE_PRIVATE)
+        val biometricTransferConfirm = prefs.getBoolean("biometrics_transfer_confirm", false)
+        val canAuth = BiometricManager.from(requireContext())
+            .canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_WEAK) == BiometricManager.BIOMETRIC_SUCCESS
+        if (biometricTransferConfirm && canAuth) {
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                val prompt = BiometricPrompt(this, ContextCompat.getMainExecutor(requireContext()),
+                    object : BiometricPrompt.AuthenticationCallback() {
+                        override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
+                            dialog.dismiss()
+                            doTransfer()
+                        }
+                        override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
+                            if (errorCode != BiometricPrompt.ERROR_CANCELED &&
+                                errorCode != BiometricPrompt.ERROR_USER_CANCELED &&
+                                errorCode != BiometricPrompt.ERROR_NEGATIVE_BUTTON) {
+                                Toast.makeText(requireContext(), errString, Toast.LENGTH_SHORT).show()
+                            }
+                        }
+                        override fun onAuthenticationFailed() { /* keep dialog open */ }
+                    })
+                prompt.authenticate(
+                    BiometricPrompt.PromptInfo.Builder()
+                        .setTitle(getString(R.string.biometric_transfer_title))
+                        .setSubtitle("$currency $amountStr → $destDisplay")
+                        .setNegativeButtonText(getString(android.R.string.cancel))
+                        .build()
+                )
+            }
+        }
     }
 
     private fun doMibTransfer(