Add support for listening to NFC broadcasts (#1017)

app/src/main/java/com/x8bit/bitwarden/ui/platform/manager/nfc/NfcManager.kt

@@ -0,0 +1,20 @@
+package com.x8bit.bitwarden.ui.platform.manager.nfc
+
+/**
+ * Provides basic functionality for starting and stopping discovery of NFC devices.
+ */
+interface NfcManager {
+    /**
+     * Starts listening for NFC events.
+     *
+     * Note: This is a no-op if the device does not support NFC.
+     */
+    fun start()
+
+    /**
+     * Stops listening for NFC events.
+     *
+     * Note: This is a no-op if the device does not support NFC.
+     */
+    fun stop()
+}

app/src/main/java/com/x8bit/bitwarden/ui/platform/manager/nfc/NfcManagerImpl.kt

@@ -0,0 +1,50 @@
+package com.x8bit.bitwarden.ui.platform.manager.nfc
+
+import android.app.Activity
+import android.app.PendingIntent
+import android.content.Intent
+import android.content.IntentFilter
+import android.nfc.NfcAdapter
+import com.x8bit.bitwarden.MainActivity
+import com.x8bit.bitwarden.data.autofill.util.toPendingIntentMutabilityFlag
+import com.x8bit.bitwarden.data.platform.annotation.OmitFromCoverage
+
+/**
+ * The default implementation of the [NfcManager].
+ */
+@OmitFromCoverage
+class NfcManagerImpl(
+    private val activity: Activity,
+) : NfcManager {
+    private val nfcAdapter: NfcAdapter? = NfcAdapter.getDefaultAdapter(activity)
+
+    private val supportsNfc: Boolean get() = nfcAdapter?.isEnabled == true
+
+    override fun start() {
+        if (!supportsNfc) return
+        nfcAdapter?.enableForegroundDispatch(
+            activity,
+            PendingIntent.getActivity(
+                activity,
+                1,
+                Intent(activity, MainActivity::class.java).addFlags(
+                    Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP,
+                ),
+                PendingIntent.FLAG_UPDATE_CURRENT.toPendingIntentMutabilityFlag(),
+            ),
+            arrayOf(
+                IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
+                    // Register for all NDEF tags starting with http or https
+                    addDataScheme("http")
+                    addDataScheme("https")
+                },
+            ),
+            null,
+        )
+    }
+
+    override fun stop() {
+        if (!supportsNfc) return
+        nfcAdapter?.disableForegroundDispatch(activity)
+    }
+}

app/src/main/java/com/x8bit/bitwarden/ui/platform/theme/BitwardenTheme.kt

@@ -29,6 +29,8 @@ import com.x8bit.bitwarden.ui.platform.manager.exit.ExitManager
 import com.x8bit.bitwarden.ui.platform.manager.exit.ExitManagerImpl
 import com.x8bit.bitwarden.ui.platform.manager.intent.IntentManager
 import com.x8bit.bitwarden.ui.platform.manager.intent.IntentManagerImpl
+import com.x8bit.bitwarden.ui.platform.manager.nfc.NfcManager
+import com.x8bit.bitwarden.ui.platform.manager.nfc.NfcManagerImpl
 import com.x8bit.bitwarden.ui.platform.manager.permissions.PermissionsManager
 import com.x8bit.bitwarden.ui.platform.manager.permissions.PermissionsManagerImpl
 
@@ -85,6 +87,7 @@ fun BitwardenTheme(
         LocalIntentManager provides IntentManagerImpl(context),
         LocalExitManager provides ExitManagerImpl(activity),
         LocalBiometricsManager provides BiometricsManagerImpl(activity),
+        LocalNfcManager provides NfcManagerImpl(activity),
     ) {
         // Set overall theme based on color scheme and typography settings
         MaterialTheme(
@@ -201,6 +204,13 @@ val LocalPermissionsManager: ProvidableCompositionLocal<PermissionsManager> = co
     error("CompositionLocal LocalPermissionsManager not present")
 }
 
+/**
+ * Provides access to the NFC manager throughout the app.
+ */
+val LocalNfcManager: ProvidableCompositionLocal<NfcManager> = compositionLocalOf {
+    error("CompositionLocal NfcManager not present")
+}
+
 /**
  * Provides access to non material theme typography throughout the app.
  */