lab practic 2

main.java

/*
VICTOR ANDREI OPREA 341 C1
*/

package practicaltest02.pdsd.systems.cs.pub.ro.practicaltest02;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URL;

class Utilities {

    public static BufferedReader getReader(Socket socket) throws IOException {
        try {
            return new BufferedReader(new InputStreamReader(socket.getInputStream()));
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }

    public static PrintWriter getWriter(Socket socket) throws IOException {
        return new PrintWriter(socket.getOutputStream(), true);
    }

}

public class PracticalTest02MainActivity extends ActionBarActivity {
    TextView infoText;
    ServerThread serverThread;
    Button startButton;
    Button allButton;
    int port = 9001;
    String country;
    String city;

    class StartServerButtonListener implements Button.OnClickListener {

        @Override
        public void onClick(View v) {
            Log.d("CLICK", "STARTING SERVER");

            serverThread = new ServerThread();
            serverThread.startServer(port);
        }

    }

    class SendButtonListener implements Button.OnClickListener {

        @Override
        public void onClick(View v) {
            Button b = (Button) v;
            infoText.setText("");

            ClientThread clientThread = new ClientThread();
            country = ((EditText) findViewById(R.id.country)).getText().toString();
            city = ((EditText) findViewById(R.id.city)).getText().toString();
            clientThread.startClient(b.getText().toString());
        }

    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_practical_test02_main);

        infoText = (TextView) findViewById(R.id.weather_forecast_text_view);
        startButton = (Button) findViewById(R.id.connect_button);
        allButton = (Button) findViewById(R.id.get_weather_forecast_button);

        startButton.setOnClickListener(new StartServerButtonListener());
        allButton.setOnClickListener(new SendButtonListener());
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_practical_test02_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    private class ClientThread extends Thread {

        private Socket socket = null;
        private String info = "";

        public void startClient(String info) {
            this.info = info;
            start();
        }

        @Override
        public void run() {
            try {
                Socket socket = new Socket("127.0.0.1", port);

                PrintWriter writer = Utilities.getWriter(socket);

                writer.println(info);
                writer.flush();

                BufferedReader reader = Utilities.getReader(socket);

                while(true) {
                    final String line = reader.readLine();
                    if (line.equals("end"))
                        break;

                    infoText.post(new Runnable() {

                        @Override
                        public void run() {
                            String text = infoText.getText().toString();
                            infoText.setText(text + "\n" + line);
                        }

                    });
                }

                socket.close();
            } catch (Exception exception) {
                exception.printStackTrace();
            }
        }
    }

    private class ServerThread extends Thread {

        private boolean isRunning = false;
        int port = 8000;
        private ServerSocket serverSocket;
        private Meteo cache;

        public void startServer(int p) {
            this.port = p;
            cache = new Meteo("empty", "empty", "empty");
            isRunning = true;
            start();
        }

        public void stopServer() {
            isRunning = false;
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (serverSocket != null) {
                            serverSocket.close();
                        }
                    } catch(IOException ioException) {
                        ioException.printStackTrace();
                    }
                }
            }).start();
        }

        public void run() {
            try {
                serverSocket = new ServerSocket(this.port);

                while (isRunning) {
                    Socket socket = serverSocket.accept();

                    if (cache == null || !cache.country.equals(country)) {
                        String url = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "," + country;

                        URL obj = new URL(url);
                        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

                        // optional default is GET
                        con.setRequestMethod("GET");

                        int responseCode = con.getResponseCode();
                        System.out.println("\nSending 'GET' request to URL : " + url);
                        System.out.println("Response Code : " + responseCode);

                        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
                        String inputLine;
                        StringBuffer response = new StringBuffer();

                        while ((inputLine = in.readLine()) != null) {
                            response.append(inputLine);
                        }
                        in.close();

                        //print result
                        System.out.println(response.toString());
                        try {
                            JSONObject json = new JSONObject(response.toString());
                            cache = new Meteo(json.getJSONObject("main").getString("temp"),
                                    json.getJSONObject("main").getString("humidity"),
                                    country);
                        } catch (Exception e) {
                            e.printStackTrace();
                            Log.d("Server", "NULL response from endpoint");
                        }
                    }

                    BufferedReader reader = Utilities.getReader(socket);

                    String option = reader.readLine();

                    Log.d("OPTION", option);
                    if (cache != null) {
                        Log.d("CACHE", cache.temperature);
                        Log.d("CACHE", cache.humidity);
                    }

                    if (option != null && cache != null) {
                        PrintWriter writer = Utilities.getWriter(socket);
                        if (option.compareTo("get_weather_forecast") == 0) {
                            writer.println(cache.temperature);
                            writer.println(cache.humidity);
                        }

                        if (option.compareTo("Temperature") == 0) {
                            writer.println(cache.temperature);
                        }
                        if (option.compareTo("Humidity") == 0) {
                            writer.println(cache.humidity);
                        }
                        writer.println("end");
                    }
                    socket.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
                Log.d("SERVER", e.getMessage());
            }
        }

    }

    private class Meteo {
        public String temperature;
        public String humidity;
        public String country;

        public Meteo(String t, String h, String c) {
            this.temperature = t;
            this.humidity = h;
            this.country = c;
        }
    }

}

main.xml

<LinearLayout 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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="ro.pub.cs.systems.pdsd.practicaltest02.graphicuserinterface.PracticalTest02MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:textSize="25sp"
        android:textStyle="bold"
        android:text="server" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:baselineAligned="false">

        <ScrollView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1">

            <EditText
                android:id="@+id/server_port_edit_text"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="server_port" />

        </ScrollView>

        <ScrollView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1">

            <Button
                android:id="@+id/connect_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="connect" />

        </ScrollView>

    </LinearLayout>

    <Space
        android:layout_width="wrap_content"
        android:layout_height="10dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:textSize="25sp"
        android:textStyle="bold"
        android:text="client" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:baselineAligned="false">

        <ScrollView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1">

            <EditText
                android:id="@+id/city"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="city" />

        </ScrollView>

        <ScrollView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1">

            <EditText
                android:id="@+id/country"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="country" />

        </ScrollView>

    </LinearLayout>

    <GridLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:rowCount="2"
        android:columnCount="2">

        <Button
            android:id="@+id/get_weather_forecast_button"
            android:text="get_weather_forecast" />

        <Spinner
            android:id="@+id/information_type_spinner"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:entries="@array/information_types"
            android:layout_row="1"
            android:layout_column="0" />



    </GridLayout>

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/weather_forecast_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:singleLine="false"
            android:maxLines="10" />

    </ScrollView>

</LinearLayout>

manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="practicaltest02.pdsd.systems.cs.pub.ro.practicaltest02" >

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".PracticalTest02MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>