Support reader disconnect reason

android/src/main/java/com/stripeterminalreactnative/Mappers.kt

@@ -12,6 +12,7 @@ import com.stripe.stripeterminal.external.models.CartLineItem
 import com.stripe.stripeterminal.external.models.Charge
 import com.stripe.stripeterminal.external.models.ConnectionStatus
 import com.stripe.stripeterminal.external.models.DeviceType
+import com.stripe.stripeterminal.external.models.DisconnectReason
 import com.stripe.stripeterminal.external.models.Location
 import com.stripe.stripeterminal.external.models.LocationStatus
 import com.stripe.stripeterminal.external.models.NetworkStatus
@@ -562,3 +563,15 @@ fun mapFromOfflineStatus(offlineStatus: OfflineStatus): ReadableMap {
         putMap("reader", readerMap)
     }
 }
+
+fun mapFromReaderDisconnectReason(reason: DisconnectReason): String {
+    return when (reason) {
+        DisconnectReason.DISCONNECT_REQUESTED -> "disconnectRequested"
+        DisconnectReason.REBOOT_REQUESTED -> "rebootRequested"
+        DisconnectReason.SECURITY_REBOOT -> "securityReboot"
+        DisconnectReason.CRITICALLY_LOW_BATTERY -> "criticallyLowBattery"
+        DisconnectReason.POWERED_OFF -> "poweredOff"
+        DisconnectReason.BLUETOOTH_DISABLED -> "bluetoothDisabled"
+        else -> { "unknown" }
+    }
+}

android/src/main/java/com/stripeterminalreactnative/ReactNativeConstants.kt

@@ -19,4 +19,5 @@ enum class ReactNativeConstants(val listenerName: String) {
     CHANGE_OFFLINE_STATUS("didChangeOfflineStatus"),
     FORWARD_PAYMENT_INTENT("didForwardPaymentIntent"),
     REPORT_FORWARDING_ERROR("didReportForwardingError"),
+    DISCONNECT("didDisconnect")
 }

android/src/main/java/com/stripeterminalreactnative/listener/RNBluetoothReaderListener.kt

@@ -3,17 +3,20 @@ package com.stripeterminalreactnative.listener
 import com.facebook.react.bridge.ReactApplicationContext
 import com.stripe.stripeterminal.external.callable.Cancelable
 import com.stripe.stripeterminal.external.callable.ReaderListener
+import com.stripe.stripeterminal.external.models.DisconnectReason
 import com.stripe.stripeterminal.external.models.ReaderDisplayMessage
 import com.stripe.stripeterminal.external.models.ReaderInputOptions
 import com.stripe.stripeterminal.external.models.ReaderSoftwareUpdate
 import com.stripe.stripeterminal.external.models.TerminalException
 import com.stripeterminalreactnative.ReactExtensions.sendEvent
+import com.stripeterminalreactnative.ReactNativeConstants.DISCONNECT
 import com.stripeterminalreactnative.ReactNativeConstants.FINISH_INSTALLING_UPDATE
 import com.stripeterminalreactnative.ReactNativeConstants.REPORT_AVAILABLE_UPDATE
 import com.stripeterminalreactnative.ReactNativeConstants.REPORT_UPDATE_PROGRESS
 import com.stripeterminalreactnative.ReactNativeConstants.REQUEST_READER_DISPLAY_MESSAGE
 import com.stripeterminalreactnative.ReactNativeConstants.REQUEST_READER_INPUT
 import com.stripeterminalreactnative.ReactNativeConstants.START_INSTALLING_UPDATE
+import com.stripeterminalreactnative.mapFromReaderDisconnectReason
 import com.stripeterminalreactnative.mapFromReaderDisplayMessage
 import com.stripeterminalreactnative.mapFromReaderInputOptions
 import com.stripeterminalreactnative.mapFromReaderSoftwareUpdate
@@ -72,4 +75,10 @@ class RNBluetoothReaderListener(
             putString("result", mapFromReaderDisplayMessage(message))
         }
     }
+
+    override fun onDisconnect(reason: DisconnectReason) {
+        context.sendEvent(DISCONNECT.listenerName) {
+            putString("reason", mapFromReaderDisconnectReason(reason))
+        }
+    }
 }

android/src/main/java/com/stripeterminalreactnative/listener/RNUsbReaderListener.kt

@@ -3,17 +3,20 @@ package com.stripeterminalreactnative.listener
 import com.facebook.react.bridge.ReactApplicationContext
 import com.stripe.stripeterminal.external.callable.Cancelable
 import com.stripe.stripeterminal.external.callable.ReaderListener
+import com.stripe.stripeterminal.external.models.DisconnectReason
 import com.stripe.stripeterminal.external.models.ReaderDisplayMessage
 import com.stripe.stripeterminal.external.models.ReaderInputOptions
 import com.stripe.stripeterminal.external.models.ReaderSoftwareUpdate
 import com.stripe.stripeterminal.external.models.TerminalException
 import com.stripeterminalreactnative.ReactExtensions.sendEvent
+import com.stripeterminalreactnative.ReactNativeConstants.DISCONNECT
 import com.stripeterminalreactnative.ReactNativeConstants.FINISH_INSTALLING_UPDATE
 import com.stripeterminalreactnative.ReactNativeConstants.REPORT_AVAILABLE_UPDATE
 import com.stripeterminalreactnative.ReactNativeConstants.REPORT_UPDATE_PROGRESS
 import com.stripeterminalreactnative.ReactNativeConstants.REQUEST_READER_DISPLAY_MESSAGE
 import com.stripeterminalreactnative.ReactNativeConstants.REQUEST_READER_INPUT
 import com.stripeterminalreactnative.ReactNativeConstants.START_INSTALLING_UPDATE
+import com.stripeterminalreactnative.mapFromReaderDisconnectReason
 import com.stripeterminalreactnative.mapFromReaderDisplayMessage
 import com.stripeterminalreactnative.mapFromReaderInputOptions
 import com.stripeterminalreactnative.mapFromReaderSoftwareUpdate
@@ -72,4 +75,10 @@ class RNUsbReaderListener(
             putString("result", mapFromReaderDisplayMessage(message))
         }
     }
+
+    override fun onDisconnect(reason: DisconnectReason) {
+        context.sendEvent(DISCONNECT.listenerName) {
+            putString("reason", mapFromReaderDisconnectReason(reason))
+        }
+    }
 }

dev-app/src/screens/HomeScreen.tsx

@@ -8,6 +8,7 @@ import {
   Text,
   Image,
   Switch,
+  Alert,
 } from 'react-native';
 import { colors } from '../colors';
 import { AppContext } from '../AppContext';
@@ -76,6 +77,12 @@ export default function HomeScreen() {
           Toast.hide(toast);
         }, 3000);
       },
+      onDidDisconnect(reason) {
+        Alert.alert(
+          'Reader disconnected!',
+          'Reader disconnected with reason ' + reason
+        );
+      },
     }
   );
   const batteryPercentage =

ios/Mappers.swift

@@ -600,6 +600,18 @@ class Mappers {
 
        return(["sdk": sdkDict, "reader": readerDict])
     }
+
+    class func mapFromReaderDisconnectReason(_ reason: DisconnectReason) -> String {
+        switch reason {
+        case DisconnectReason.disconnectRequested: return "disconnectRequested"
+        case DisconnectReason.rebootRequested: return "rebootRequested"
+        case DisconnectReason.securityReboot: return "securityReboot"
+        case DisconnectReason.criticallyLowBattery: return "criticallyLowBattery"
+        case DisconnectReason.poweredOff: return "poweredOff"
+        case DisconnectReason.bluetoothDisabled: return "bluetoothDisabled"
+        default: return "unknown"
+        }
+    }
 }
 
 extension UInt {

ios/StripeTerminalReactNative.swift

@@ -20,6 +20,7 @@ enum ReactNativeConstants: String, CaseIterable {
     case CHANGE_OFFLINE_STATUS = "didChangeOfflineStatus"
     case FORWARD_PAYMENT_INTENT = "didForwardPaymentIntent"
     case REPORT_FORWARDING_ERROR = "didReportForwardingError"
+    case DISCONNECT = "didDisconnect"
 }
 
 @objc(StripeTerminalReactNative)
@@ -982,6 +983,11 @@ class StripeTerminalReactNative: RCTEventEmitter, DiscoveryDelegate, BluetoothRe
         let result = Mappers.mapFromReaderDisplayMessage(displayMessage)
         sendEvent(withName: ReactNativeConstants.REQUEST_READER_DISPLAY_MESSAGE.rawValue, body: ["result": result])
     }
+
+    func reader(_ reader: Reader, didDisconnect reason: DisconnectReason) {
+        let result = Mappers.mapFromReaderDisconnectReason(reason)
+        sendEvent(withName: ReactNativeConstants.DISCONNECT.rawValue, body: ["reason": result])
+    }
 
     func localMobileReader(_ reader: Reader, didStartInstallingUpdate update: ReaderSoftwareUpdate, cancelable: Cancelable?) {
         self.installUpdateCancelable = cancelable

src/components/StripeTerminalProvider.tsx

@@ -34,6 +34,7 @@ const {
   CHANGE_OFFLINE_STATUS,
   FORWARD_PAYMENT_INTENT,
   REPORT_FORWARDING_ERROR,
+  DISCONNECT,
 } = NativeModules.StripeTerminalReactNative.getConstants();
 
 const emitter = new EventEmitter();
@@ -232,6 +233,14 @@ export function StripeTerminalProvider({
     [log]
   );
 
+  const didDisconnect = useCallback(
+    ({ reason }: { reason?: Reader.DisconnectReason }) => {
+      log('didDisconnect', reason);
+      emitter?.emit(DISCONNECT, reason);
+    },
+    [log]
+  );
+
   useListener(REPORT_AVAILABLE_UPDATE, didReportAvailableUpdate);
   useListener(START_INSTALLING_UPDATE, didStartInstallingUpdate);
   useListener(REPORT_UPDATE_PROGRESS, didReportReaderSoftwareUpdateProgress);
@@ -256,6 +265,8 @@ export function StripeTerminalProvider({
   useListener(FORWARD_PAYMENT_INTENT, didForwardPaymentIntent);
   useListener(REPORT_FORWARDING_ERROR, didReportForwardingError);
 
+  useListener(DISCONNECT, didDisconnect);
+
   const tokenProviderHandler = async () => {
     try {
       const connectionToken = await tokenProvider();

src/hooks/useStripeTerminal.tsx

@@ -83,6 +83,7 @@ export const {
   CHANGE_OFFLINE_STATUS,
   FORWARD_PAYMENT_INTENT,
   REPORT_FORWARDING_ERROR,
+  DISCONNECT,
 } = NativeModules.StripeTerminalReactNative.getConstants();
 
 const NOT_INITIALIZED_ERROR_MESSAGE =
@@ -143,6 +144,7 @@ export function useStripeTerminal(props?: Props) {
     onDidChangeOfflineStatus,
     onDidForwardPaymentIntent,
     onDidForwardingFailure,
+    onDidDisconnect,
   } = props || {};
 
   const _discoverReaders = useCallback(
@@ -298,6 +300,13 @@ export function useStripeTerminal(props?: Props) {
     [onDidForwardingFailure]
   );
 
+  const didDisconnect = useCallback(
+    ({ reason }: { reason?: Reader.DisconnectReason }) => {
+      onDidDisconnect?.(reason);
+    },
+    [onDidDisconnect]
+  );
+
   useListener(REPORT_AVAILABLE_UPDATE, didReportAvailableUpdate);
   useListener(START_INSTALLING_UPDATE, didStartInstallingUpdate);
   useListener(REPORT_UPDATE_PROGRESS, didReportReaderSoftwareUpdateProgress);
@@ -322,6 +331,8 @@ export function useStripeTerminal(props?: Props) {
   useListener(FORWARD_PAYMENT_INTENT, didForwardPaymentIntent);
   useListener(REPORT_FORWARDING_ERROR, didReportForwardingError);
 
+  useListener(DISCONNECT, didDisconnect);
+
   const _initialize = useCallback(async () => {
     if (!initialize || typeof initialize !== 'function') {
       const errorMessage =

src/types/Reader.ts

@@ -108,4 +108,13 @@ export namespace Reader {
     | 'cardRemovedTooEarly';
 
   export type ConnectionStatus = 'connected' | 'connecting' | 'notConnected';
+
+  export type DisconnectReason =
+    | 'disconnectRequested'
+    | 'rebootRequested'
+    | 'securityReboot'
+    | 'criticallyLowBattery'
+    | 'poweredOff'
+    | 'bluetoothDisabled'
+    | 'unknown';
 }

src/types/index.ts

@@ -351,6 +351,8 @@ export type UserCallbacks = {
     error: StripeError
   ): void;
   onDidForwardingFailure?(error?: StripeError): void;
+
+  onDidDisconnect?(reason?: Reader.DisconnectReason): void;
 };
 
 export namespace PaymentMethod {