package com.nesbang.rtltesting;

import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private boolean isConnected = false;
    private int rtlSamp = 2100000;
    private int rtlPort = 1234;
    private MenuItem menuConnect;

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

    /**
     * Add menu items
     */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Group 0, ID 0
        menuConnect = menu.add(0, 0, Menu.FIRST, "");
        menuConnect.setIcon(R.drawable.ic_play_arrow_white_48dp);
        menuConnect.setShowAsAction(Menu.FLAG_ALWAYS_PERFORM_CLOSE);

        return super.onCreateOptionsMenu(menu);
    }

    /**
     * Handle menu item events
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case 0: // Start/Stop
                startStop();

            default:
                return super.onOptionsItemSelected(item);
        }
    }

    /**
     * Connect to RTL_TCP driver
     */
    private void startStop() {
        if (!isConnected) { // Connect
            out("connect", "Connecting to RTL_TCP");
            toast("Connecting...", Toast.LENGTH_SHORT);

            Intent rtlIntent = new Intent(Intent.ACTION_VIEW).setData(Uri.parse("iqsrc://-a 127.0.0.1 -p " + String.valueOf(rtlPort) + " -s " + String.valueOf(rtlSamp)));
            startActivityForResult(rtlIntent, 1234);
        }
        else {  // Disconnect
            out("connect", "Disconnecting from RTL_TCP");
            toast("Disconnecting...", Toast.LENGTH_SHORT);

            //TODO: Disconnect from RTL_TCP through TCP Client
        }
    }

    private void connected() {
        out("onActivityResult", "Driver returned OK");
        toast("Connected!", Toast.LENGTH_SHORT);
        isConnected = true;
        menuConnect.setIcon(R.drawable.ic_stop_white_48dp);

        //TODO: TCP Client setup
    }

    /**
     * Result from rtlIntent
     *
     * @param requestCode Intent request code (1234 for rtlIntent)
     * @param resultCode  Intent result (i.e. RESULT_OK)
     * @param data        Intent data
     */
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode != 1234) {
            // Result is not from rtlIntent
            out("onActivityResult", "Wrong request code: " + String.valueOf(requestCode));
            return;
        }

        if (resultCode == RESULT_OK) {
            // Driver has connected to RTL device and rtl_tcp is running
            connected();
        } else {
            // Driver failed to start
            String err = data.getStringExtra("detailed_exception_message");
            out("onActivityResult", "Driver returned error: " + err);
            alert("RTLSDR Driver Error", err);
        }
    }


    /**
     * Console write utility
     *
     * @param src Message source (method usually)
     * @param msg Message content
     */
    private void out(String src, String msg) {
        Log.i(src, msg);
    }

    /**
     * Alert dialog utility
     *
     * @param title Alert title
     * @param msg   Alert message
     * @return AlertDialog object
     */
    private AlertDialog alert(String title, String msg) {
        AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);

        alertBuilder.setMessage(msg);
        alertBuilder.setTitle(title);
        alertBuilder.setPositiveButton(R.string.dismiss, null);

        AlertDialog alert = alertBuilder.create();
        alert.show();

        return alert;
    }

    /**
     * Toast message utility
     *
     * @param msg Toast content
     * @param len Toast duration (i.e. Toast.LENGTH_SHORT / Toast.LENGTH_LONG)
     */
    private void toast(String msg, int len) {
        Toast.makeText(this, msg, len).show();
    }
}