Merge pull request #4 from pk-218/dev

Phase 1 changes

app/build.gradle

@@ -41,7 +41,10 @@ dependencies {
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
     implementation 'androidx.navigation:navigation-fragment-ktx:2.4.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.2'
     implementation 'androidx.navigation:navigation-ui-ktx:2.4.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/main/AndroidManifest.xml

@@ -2,6 +2,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="tech.kotlinx.knox">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

app/src/main/java/tech/kotlinx/knox/ChatFragment.kt

@@ -0,0 +1,26 @@
+package tech.kotlinx.knox
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import tech.kotlinx.knox.adapter.MessageAdapter
+import tech.kotlinx.knox.data.model.Datasource
+
+class ChatFragment : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+
+        val view = inflater.inflate(R.layout.fragment_chat, container, false)
+        val messages = Datasource().loadMessages()
+        val recyclerView=view.findViewById<RecyclerView>(R.id.message_view)
+        recyclerView.adapter= context?.let { MessageAdapter(it, messages) }
+
+        return view
+    }
+}

app/src/main/java/tech/kotlinx/knox/ConnectionDetailsFragment.kt

@@ -0,0 +1,96 @@
+package tech.kotlinx.knox
+
+import android.content.Context
+import android.content.Context.WIFI_SERVICE
+import android.net.ConnectivityManager
+import android.net.wifi.WifiManager
+import android.os.Bundle
+import android.text.format.Formatter
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.findNavController
+import tech.kotlinx.knox.databinding.FragmentConnectionDetailsBinding
+import java.net.NetworkInterface
+import java.util.*
+
+
+/**
+ * A simple [Fragment] subclass as the second destination in the navigation.
+ */
+class ConnectionDetailsFragment : Fragment() {
+
+    private var _binding: FragmentConnectionDetailsBinding? = null
+
+    // This property is only valid between onCreateView and
+    // onDestroyView.
+    private val binding get() = _binding!!
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentConnectionDetailsBinding.inflate(inflater, container, false)
+        return binding.root
+
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        var userIpAddress: String? = "0.0.0.0"
+        val connectivityManager: ConnectivityManager = context?.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+        @Suppress("DEPRECATION")
+        when (connectivityManager.activeNetworkInfo?.type) {
+            ConnectivityManager.TYPE_WIFI -> userIpAddress = getWifiIpAddress()
+            ConnectivityManager.TYPE_MOBILE -> userIpAddress = getMobileDataIpAddress()
+        }
+        binding.senderIpAddressField.setText(userIpAddress)
+
+        binding.enterChatButton.setOnClickListener {
+            findNavController().navigate(R.id.action_SecondFragment_to_FirstFragment)
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    @Suppress("DEPRECATION")
+    private fun getWifiIpAddress(): String? {
+        val wifiMgr = context?.getSystemService(WIFI_SERVICE) as WifiManager?
+        val wifiInfo = wifiMgr!!.connectionInfo
+        val ip = wifiInfo.ipAddress
+        return Formatter.formatIpAddress(ip)
+    }
+
+    private fun getMobileDataIpAddress(): String {
+        try {
+            val interfaces = Collections.list(NetworkInterface.getNetworkInterfaces())
+            for (networkInterface in interfaces) {
+                val addresses = Collections.list(networkInterface.inetAddresses)
+                for (address in addresses) {
+                    if (!address.isLoopbackAddress) {
+                        val result = address.hostAddress!!
+                        val isIPv4 = result.indexOf(':') < 0
+                        return if (isIPv4)
+                            result
+                        else {
+                            val delimiter: Int = result.indexOf('%')
+                            if (delimiter < 0)
+                                result.uppercase(Locale.getDefault())
+                            else
+                                result.substring(0, delimiter).uppercase(Locale.getDefault());
+                        }
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            Log.d("MobileIPError", e.toString())
+        }
+        return "0.0.0.0"
+    }
+}

app/src/main/java/tech/kotlinx/knox/adapter/messageAdapter.kt

@@ -0,0 +1,33 @@
+package tech.kotlinx.knox.adapter
+import android.content.Context
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import tech.kotlinx.knox.R
+import tech.kotlinx.knox.data.model.Message
+
+class MessageAdapter(
+    private val context: Context,
+    private val messageList:List<Message>
+    ) : RecyclerView.Adapter<MessageAdapter.ItemViewHolder>() {
+
+    class ItemViewHolder(private val view: View) : RecyclerView.ViewHolder(view) {
+        val textView: TextView = view.findViewById(R.id.message_box)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ItemViewHolder {
+        val adapterLayout = LayoutInflater.from(parent.context)
+            .inflate(R.layout.message_box, parent, false)
+
+        return ItemViewHolder(adapterLayout)
+    }
+
+    override fun onBindViewHolder(holder: ItemViewHolder, position: Int) {
+        val item = messageList[position]
+        holder.textView.text =  item.getMessage()
+    }
+
+    override fun getItemCount() = messageList.size
+}

app/src/main/java/tech/kotlinx/knox/data/model/Datasource.kt

@@ -0,0 +1,13 @@
+package tech.kotlinx.knox.data.model
+
+import java.util.*
+
+class Datasource {
+    fun loadMessages():List<Message> {
+        return listOf<Message>(
+            Message("Hi",1, Date(2,2,2)),
+            Message("Hi",1, Date(2,2,2)),
+            Message("Hi",1, Date(2,2,2))
+        )
+    }
+}

app/src/main/java/tech/kotlinx/knox/ui/viewmodels/ChatViewModel.kt

@@ -0,0 +1,38 @@
+package tech.kotlinx.knox.ui.viewmodels
+
+import android.util.Log
+import androidx.lifecycle.ViewModel
+import java.io.BufferedReader
+import java.io.InputStreamReader
+import java.io.PrintWriter
+import java.net.Socket
+import java.util.*
+
+class ChatViewModel : ViewModel() {
+    val TAG = "Chat View Model"
+    private suspend fun sendMessage(msg : String?, receiverIpAddress : String?, receiverPort : Int) {
+        try {
+            val clientSocket : Socket = Socket(receiverIpAddress, receiverPort)
+            val outToServer = clientSocket.getOutputStream()
+            val output = PrintWriter(outToServer)
+            output.println(msg)
+            output.flush()
+            clientSocket.close()
+
+        } catch(e : Exception) {
+            e.printStackTrace()
+        }
+    }
+
+    private suspend fun receiveMessage(vararg sockets: Socket): String? {
+        var text : String? = null
+        try {
+            val input = BufferedReader(InputStreamReader(sockets[0].getInputStream()))
+            text = input.readLine()
+            Log.i(TAG, "Received => $text")
+        } catch (e: java.lang.Exception) {
+            e.printStackTrace()
+        }
+        return text
+    }
+}

app/src/main/res/drawable/round_border.xml

@@ -1,16 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android" >
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
     <stroke
         android:width="1dp"
-        android:color="@color/white" />
+        android:color="@color/white"
+        />
 
     <solid android:color="#ffffff" />
 
     <padding
         android:left="1dp"
         android:right="1dp"
         android:bottom="1dp"
-        android:top="1dp" />
+        android:top="1dp"
+        />
 
     <corners android:radius="5dp" />
 </shape>

app/src/main/res/layout/fragment_chat.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:context=".ChatFragment">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/message_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbars="vertical"
+        app:layoutManager="LinearLayoutManager" />
+</FrameLayout>