feat: add nfc step 1

2026-06-05 01:47:39 +02:00
parent 8e53a927a0
commit cc50ff08df
7 changed files with 340 additions and 9 deletions
@@ -25,6 +25,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.Send
 import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.ContentPaste
+import androidx.compose.material.icons.filled.Nfc
 import androidx.compose.material.icons.filled.QrCode
 import androidx.compose.material.icons.filled.QrCodeScanner
 import androidx.compose.material3.CircularProgressIndicator
@@ -160,6 +161,36 @@ fun WalletScreen(
        }
    }

+    // ── NFC reader mode — register on composition, unregister on disposal ────────
+    val nfcAdapter = remember {
+        android.nfc.NfcAdapter.getDefaultAdapter(context)
+    }
+
+    DisposableEffect(Unit) {
+        val activity = context as MainActivity
+        nfcAdapter?.enableReaderMode(
+            activity,
+            { tag -> vm.onNfcTagDiscovered(tag) },   // runs on NFC binder thread
+            android.nfc.NfcAdapter.FLAG_READER_NFC_A or
+                    android.nfc.NfcAdapter.FLAG_READER_NFC_B or
+                    android.nfc.NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK.inv(),  // keep NDEF
+            null
+        )
+        onDispose {
+            nfcAdapter?.disableReaderMode(activity)
+        }
+    }
+
+    val nfcOffer by vm.nfcOfferState.collectAsStateWithLifecycle()
+
+    // Auto-dismiss NFC banner after 8 seconds (same as clipboard)
+    LaunchedEffect(nfcOffer) {
+        if (nfcOffer is NfcOfferState.Detected) {
+            delay(8_000)
+            vm.dismissNfcOffer()
+        }
+    }
+
    Scaffold(
        bottomBar = {
            if (showBottomBar) {
@@ -414,6 +445,70 @@ fun WalletScreen(
                    }
                }
            }
+            // ── NFC banner — floats below clipboard banner, slides in from top ────────────
+            AnimatedVisibility(
+                visible  = nfcOffer is NfcOfferState.Detected,
+                enter    = slideInVertically(initialOffsetY = { -it }),
+                exit     = slideOutVertically(targetOffsetY = { -it }),
+                modifier = Modifier
+                    .align(Alignment.TopCenter)
+                    .zIndex(1f)
+                    .fillMaxWidth()
+                    .statusBarsPadding()
+                    // push down if clipboard banner is also showing
+                    .padding(top = if (clipboardOffer is ClipboardOfferState.Detected) 64.dp else 0.dp)
+            ) {
+                if (nfcOffer is NfcOfferState.Detected) {
+                    val offer = nfcOffer as NfcOfferState.Detected
+                    val label = when (offer.inputType) {
+                        is SendInputType.Bolt11           -> "Invoice"
+                        is SendInputType.Lnurl            -> "LNURL"
+                        is SendInputType.LightningAddress -> "Lightning Address"
+                        else                              -> "Payment"
+                    }
+                    val subLabel = when (offer.inputType) {
+                        is SendInputType.Lnurl -> "Tap to open"
+                        else                   -> "Tap to pay"
+                    }
+                    Surface(
+                        color    = MaterialTheme.colorScheme.secondaryContainer,  // distinct from clipboard's primaryContainer
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .clickable {
+                                vm.dismissNfcOffer()
+                                vm.scan(offer.raw)
+                                // scan() already emits navigateToReceive for LNURL-withdraw,
+                                // so we only need to navigate to Send for everything else.
+                                // The existing navigateToReceive LaunchedEffect handles BoltCard.
+                                navController.navigate(TabItem.Send.route) {
+                                    launchSingleTop = true
+                                }
+                            }
+                    ) {
+                        Row(
+                            modifier          = Modifier.padding(horizontal = 16.dp, vertical = 10.dp),
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            Icon(Icons.Filled.Nfc, contentDescription = null)
+                            Spacer(Modifier.width(12.dp))
+                            Column(Modifier.weight(1f)) {
+                                Text(
+                                    "$label detected via NFC",
+                                    style = MaterialTheme.typography.bodyMedium
+                                )
+                                Text(
+                                    subLabel,
+                                    style = MaterialTheme.typography.bodySmall,
+                                    color = MaterialTheme.colorScheme.onSecondaryContainer.copy(alpha = 0.7f)
+                                )
+                            }
+                            IconButton(onClick = { vm.dismissNfcOffer() }) {
+                                Icon(Icons.Default.Close, contentDescription = "Dismiss")
+                            }
+                        }
+                    }
+                }
+            }
        }
    }
 }