From 5057cfae5e04b176e611ac6667200930ff65a22a Mon Sep 17 00:00:00 2001
From: stakutis <chris.stakutis@gmail.com>
Date: Fri, 13 Mar 2015 14:07:38 -0400
Subject: [PATCH] Added pair/unpair

Added support to Pair/Unpair and can specify a PIN
---
 .../com/megster/cordova/BluetoothSerial.java  | 77 ++++++++++++++++++-
 www/bluetoothSerial.js                        | 10 +++
 2 files changed, 86 insertions(+), 1 deletion(-)

diff --git a/src/android/com/megster/cordova/BluetoothSerial.java b/src/android/com/megster/cordova/BluetoothSerial.java
index bc0f537d..3a4766a6 100644
--- a/src/android/com/megster/cordova/BluetoothSerial.java
+++ b/src/android/com/megster/cordova/BluetoothSerial.java
@@ -23,6 +23,7 @@
 import org.json.JSONObject;
 
 import java.util.Set;
+import java.lang.reflect.Method;
 
 /**
  * PhoneGap Plugin for Serial Communication over Bluetooth
@@ -48,6 +49,8 @@ public class BluetoothSerial extends CordovaPlugin {
     private static final String SETTINGS = "showBluetoothSettings";
     private static final String ENABLE = "enable";
     private static final String DISCOVER_UNPAIRED = "discoverUnpaired";
+    private static final String PAIR = "pair";
+    private static final String UNPAIR = "unpair";
 
     // callbacks
     private CallbackContext connectCallback;
@@ -77,6 +80,7 @@ public class BluetoothSerial extends CordovaPlugin {
     StringBuffer buffer = new StringBuffer();
     private String delimiter;
     private static final int REQUEST_ENABLE_BLUETOOTH = 1;
+    private String PIN;  // If needed for pairing
 
     @Override
     public boolean execute(String action, CordovaArgs args, CallbackContext callbackContext) throws JSONException {
@@ -200,7 +204,14 @@ public boolean execute(String action, CordovaArgs args, CallbackContext callback
 
             discoverUnpairedDevices(callbackContext);
 
-        } else {
+        }
+        else if (action.equals(PAIR)) {
+            pairRequest(args, callbackContext);
+        }
+        else if (action.equals(UNPAIR)) {
+             unpairRequest(args, callbackContext);
+        }
+        else {
             validAction = false;
 
         }
@@ -276,6 +287,70 @@ public void onReceive(Context context, Intent intent) {
         bluetoothAdapter.startDiscovery();
     }
 
+    protected byte[] getPin() {
+        return PIN.getBytes();
+    }
+
+    private void unpairRequest(CordovaArgs args, final CallbackContext callbackContext) throws JSONException {
+        String macAddress = args.getString(0);
+        BluetoothDevice device = bluetoothAdapter.getRemoteDevice(macAddress);
+        Log.d(TAG,"unpairRequest function");
+        try {
+            Method removeBond = BluetoothDevice.class.getMethod("removeBond");
+            if (!(Boolean)removeBond.invoke(device)) {
+                Log.d(TAG,"Must already be unpaired!");
+            }
+            callbackContext.success("Unpaired");
+        } catch (Exception e) {
+            Log.e("unpairRequest", "Exception", e);
+            callbackContext.error("Unpair exception:"+e);
+		}
+     }
+
+
+
+    private void pairRequest(CordovaArgs args, final CallbackContext callbackContext) throws JSONException {
+         String macAddress = args.getString(0);
+         BluetoothDevice device = bluetoothAdapter.getRemoteDevice(macAddress);
+         try {
+            PIN=args.getString(1);
+         } catch (JSONException e)  {
+            PIN="";
+         }
+         Log.d(TAG,"pairRequest; mac:"+macAddress+" PIN:"+PIN);
+         final BroadcastReceiver pairingReceiver = new BroadcastReceiver() {
+            public void onReceive(Context context, Intent intent) {
+                String action = intent.getAction();
+				int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, 0);
+                Log.d(TAG,"action:"+action +" bondState:"+bondState+" 12=Bonded 11=Bonding 10=None");
+                if (BluetoothDevice.ACTION_PAIRING_REQUEST.equals(action)) {
+                    Log.d(TAG,"Setting PIN");
+                    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+                    byte[] pinBytes = getPin();
+                    device.setPin(pinBytes);
+                    device.setPairingConfirmation(true);
+                }
+                if (bondState == BluetoothDevice.BOND_BONDED)
+                             callbackContext.success("PAIRED correctly");
+                else
+                if (bondState == BluetoothDevice.BOND_NONE)
+                    callbackContext.error("PAIR failed because of state:"+bondState);
+                if (bondState == BluetoothDevice.BOND_BONDED || bondState == BluetoothDevice.BOND_NONE)
+                    cordova.getActivity().unregisterReceiver(this);
+            }
+        };
+        Activity activity = cordova.getActivity();
+        activity.registerReceiver(pairingReceiver, new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED));
+        activity.registerReceiver(pairingReceiver, new IntentFilter(BluetoothDevice.ACTION_PAIRING_REQUEST));
+        activity.registerReceiver(pairingReceiver, new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
+
+        Log.d(TAG,"About to createBond()");
+        if(device.createBond() != true) {
+            Log.d(TAG,"Must already be bonded/paired!");
+            callbackContext.success("PAIRED already");
+        }
+    }
+
     private JSONObject deviceToJSON(BluetoothDevice device) throws JSONException {
         JSONObject json = new JSONObject();
         json.put("name", device.getName());
diff --git a/www/bluetoothSerial.js b/www/bluetoothSerial.js
index 3f1342bc..6978ca62 100644
--- a/www/bluetoothSerial.js
+++ b/www/bluetoothSerial.js
@@ -110,8 +110,18 @@ module.exports = {
 
     discoverUnpaired: function (success, failure) {
         cordova.exec(success, failure, "BluetoothSerial", "discoverUnpaired", []);        
+    },
+
+    pair: function (macAddress, pin, success, failure) {
+        cordova.exec(success, failure, "BluetoothSerial", "pair", [macAddress, pin]);
+    },
+
+    unpair: function (macAddress, success, failure) {
+        cordova.exec(success, failure, "BluetoothSerial", "unpair", [macAddress]);
     }
 
+
+
 };
 
 var stringToArrayBuffer = function(str) {