package com.example.trapdoormonitoring;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import java.io.IOException;
import java.lang.reflect.Array;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;
import java.util.Arrays;

public class MainActivity extends AppCompatActivity {
    private DatagramSocket ds;
    private String[] computer_lists;
    private ListView lv;
    private DatagramPacket dp;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        connect();
        lv = findViewById(R.id.lv);
        MyBaseAdapter mAdapter = new MyBaseAdapter();
        lv.setAdapter(mAdapter);
        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Intent intent = new Intent(MainActivity.this,MainActivity2.class);
                intent.putExtra("ip",computer_lists[position]);
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        while (true) {
                            intent.putExtra("dp", dp.getData());
                            intent.putExtra("imageip",dp.getAddress().getHostAddress());
                        }
                    }
                }).start();
                startActivity(intent);
            }
        });

    }
    public void connect(){
        new Thread(new Runnable() {
            @Override
            public void run() {
                computer_lists = new String[10];
                try {
                    while (true){
                        ds = new DatagramSocket(8998);
                        byte[] buf = new byte[1024];
                        DatagramPacket dp = new DatagramPacket(buf,buf.length);
                        ds.receive(dp);
                        String ip = dp.getAddress().getHostAddress();
                        if (!Arrays.asList(computer_lists).contains(ip)) {
                            for(int i = 0;i<computer_lists.length;i++){
                                if (computer_lists[i] == null){
                                    computer_lists[i] = ip;
                                    break;
                                }
                            }
                        }
                    }

                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        }).start();

    }
    class MyBaseAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return computer_lists.length;
        }

        @Override
        public Object getItem(int position) {
            return computer_lists[position];
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = View.inflate(MainActivity.this,R.layout.list_item,null);
            TextView ip = view.findViewById(R.id.textView2);
            ip.setText(computer_lists[position]);
            return view;
        }
    }
}