From 69848dce6e4b70c30b1d28caff4b1f3151dee294 Mon Sep 17 00:00:00 2001
From: Zhengyu Peng <rookiepeng@users.noreply.github.com>
Date: Tue, 22 Feb 2022 18:32:10 -0500
Subject: [PATCH] Create BluetoothClient.kt

---
 .../hexapod/network/BluetoothClient.kt        | 158 ++++++++++++++++++
 1 file changed, 158 insertions(+)
 create mode 100644 software/android/app/src/main/java/com/rookiedev/hexapod/network/BluetoothClient.kt

diff --git a/software/android/app/src/main/java/com/rookiedev/hexapod/network/BluetoothClient.kt b/software/android/app/src/main/java/com/rookiedev/hexapod/network/BluetoothClient.kt
new file mode 100644
index 0000000..7e2625f
--- /dev/null
+++ b/software/android/app/src/main/java/com/rookiedev/hexapod/network/BluetoothClient.kt
@@ -0,0 +1,158 @@
+package com.rookiedev.hexapod.network
+
+import android.annotation.SuppressLint
+import android.bluetooth.BluetoothAdapter
+import android.bluetooth.BluetoothDevice
+import android.bluetooth.BluetoothManager
+import android.bluetooth.BluetoothSocket
+import android.content.Context
+import java.io.*
+import java.lang.reflect.InvocationTargetException
+import java.lang.reflect.Method
+import java.net.*
+import java.util.*
+
+class BluetoothClient(
+    context: Context?,
+    mac: String?,
+    messageListener: OnMessageReceived?,
+    onConnect: OnConnectEstablished?,
+    onDisconnect: OnDisconnected?
+) :
+    Thread() {
+    private var mContext: Context? = null
+    private var bluetoothManager: BluetoothManager? = null
+    private var bluetoothAdapter: BluetoothAdapter? = null
+    private var device: BluetoothDevice? = null
+
+    private var socket: BluetoothSocket? = null
+
+    private var btOut: PrintWriter? = null
+    private var btIn: BufferedReader? = null
+    private var mMessageListener: OnMessageReceived? = null
+    private var onConnected: OnConnectEstablished? = null
+    private var onDisconnected: OnDisconnected? = null
+    private var isConnected = false
+
+    @SuppressLint("MissingPermission")
+    override fun run() {
+        val uuid: UUID =
+            UUID.fromString("00001101-0000-1000-8000-00805F9B34FB") //UUID for serial connection
+        val secure = false
+        val port = 10
+        try {
+            if (secure) {
+                if (port == 0) {
+                    socket = device!!.createRfcommSocketToServiceRecord(uuid)
+                } else {
+                    val createRfcommSocket: Method = this.device!!.javaClass.getMethod(
+                        "createRfcommSocket", *arrayOf<Class<*>?>(
+                            Int::class.javaPrimitiveType
+                        )
+                    )
+                    socket = createRfcommSocket.invoke(device, port) as BluetoothSocket
+                }
+            } else {
+                if (port == 0) {
+                    socket = device!!.createInsecureRfcommSocketToServiceRecord(
+                        uuid
+                    )
+                } else {
+                    val createInsecureRfcommSocket: Method =
+                        this.device!!.javaClass.getMethod(
+                            "createInsecureRfcommSocket", *arrayOf<Class<*>?>(
+                                Int::class.javaPrimitiveType
+                            )
+                        )
+                    socket = createInsecureRfcommSocket.invoke(
+                        device,
+                        port
+                    ) as BluetoothSocket
+                }
+            }
+        } catch (e: IOException) {
+            println(e)
+//                    Log.e(TAG, "Socket Type: " + mSocketType.toString() + "create() failed", e)
+        } catch (e: NoSuchMethodException) {
+            println(e)
+//                    Log.e(TAG, "Socket Type: " + mSocketType.toString() + "create() failed", e)
+        } catch (e: InvocationTargetException) {
+            println(e)
+//                    Log.e(TAG, "Socket Type: " + mSocketType.toString() + "create() failed", e)
+        } catch (e: IllegalAccessException) {
+            println(e)
+//                    Log.e(TAG, "Socket Type: " + mSocketType.toString() + "create() failed", e)
+        }
+
+        try {
+            socket!!.connect()
+            onConnected!!.onConnected()
+            btOut = PrintWriter(
+                BufferedWriter(OutputStreamWriter(socket!!.outputStream)),
+                true
+            )
+            btIn = BufferedReader(InputStreamReader(socket!!.inputStream))
+            isConnected = true
+            while (isConnected) {
+                sleep(1000)
+            }
+        } catch (e: InterruptedException) {
+//            controller.cancelProgressDialog(java.lang.ModuleLayer.Controller.SERVERALERT)
+            println(e)
+//            controller.alertDialog(0)
+//            onDisconnected!!.onDisconnected()
+        } catch (e: SocketTimeoutException) {
+            println(e)
+            onDisconnected!!.onDisconnected()
+        } catch (e: ConnectException) {
+            println(e)
+            onDisconnected!!.onDisconnected()
+        } catch (e: IOException) {
+            println(e)
+            onDisconnected!!.onDisconnected()
+        }
+    }
+
+    /**
+     * Sends the message entered by client to the server
+     *
+     * @param message text entered by client
+     */
+    fun sendMessage(message: String?) {
+        if (this.btOut != null && !this.btOut!!.checkError()) {
+            println("send message")
+            this.btOut!!.print(message)
+            this.btOut!!.flush()
+        }
+    }
+
+    fun stopClient() {
+        isConnected = false
+        socket!!.close()
+    }
+
+    interface OnMessageReceived {
+        fun messageReceived(message: String?)
+    }
+
+    interface OnConnectEstablished {
+        fun onConnected()
+    }
+
+    interface OnDisconnected {
+        fun onDisconnected()
+    }
+
+    init {
+        this.mContext = context
+        this.mMessageListener = messageListener
+        this.onConnected = onConnect
+        this.onDisconnected = onDisconnect
+
+        this.bluetoothManager = this.mContext!!.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
+        this.bluetoothAdapter = this.bluetoothManager!!.adapter
+
+        this.device = this.bluetoothAdapter!!.getRemoteDevice(mac)
+    }
+
+}
\ No newline at end of file