package com.example.ubprof.threadsandapis;

import java.io.InputStream;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONObject;

public class TowingInfoActivity extends AppCompatActivity {

    private static String URL = "https://data.baltimorecity.gov/resource/rpx3-hpjc.json?tagnumber=";
    private static final String TAG = "Towing API Downloader";

    private Button getTowingInfoButton;
    private EditText licensePlate;
    private TextView towOrigin;
    private TextView towDestination;
    private TextView towAddress;

    private String licPlate;
    private String towOrig;
    private String towLocationCompany;
    private String towLocationAddress;

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

        licensePlate = (EditText)findViewById(R.id.license_plate_input);
        towOrigin = (TextView)findViewById(R.id.license_plate_towed_from);
        towDestination = (TextView)findViewById(R.id.license_plate_tow_location);
        towAddress = (TextView)findViewById(R.id.license_plate_tow_address);

        getTowingInfoButton = (Button)findViewById(R.id.license_plate_get_info);
        getTowingInfoButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                licPlate = licensePlate.getText().toString().trim();
                if ( licPlate.equalsIgnoreCase("") )
                    licPlate = "9GAA97";
                new GetInfoFromAPI().execute(URL, licPlate);
            }
        });
    }

    protected void loadInfo() {
        if ( licensePlate.getText().toString().trim().length() == 0 )
            licensePlate.setText(licPlate);
        towOrigin.setText(towOrig);
        towDestination.setText(towLocationCompany);
        towAddress.setText(towLocationAddress);
    }

    class GetInfoFromAPI extends AsyncTask<String, Void, String> {

        private String jsonResponse;

        @Override
        protected String doInBackground(String... strings) {
            String url_address = strings[0];
            String licPlate = strings[1];

            url_address += licPlate;

            Log.i(TAG, "doInBackground: Starting the download");

            try {
                URL url = new URL(url_address);

                InputStream in = url.openStream();
                Scanner scanner = new Scanner(in, StandardCharsets.UTF_8.name());
                jsonResponse = scanner.useDelimiter("\\A").next();

                in.close();

                Log.i(TAG, "doInBackground: " + jsonResponse);
                Log.i(TAG, "doInBackground: Done with the download");

                Log.i(TAG, "doInBackground: Working on the JSON response");

                JSONArray jsonArray = new JSONArray(jsonResponse);
                JSONObject jsonObject = jsonArray.getJSONObject(0);

                towOrig = jsonObject.getString("towedfromlocation");
                towLocationCompany = jsonObject.getString("storageyard");
                towLocationAddress = jsonObject.getString("storagelocation");

                Log.i(TAG, "doInBackground: Done with the JSON response");

            } catch (Exception e) {
                Log.i(TAG, "doInBackground: Exception occurred - " + e);
            }

            return "API Call Complete";
        }

        protected void onPostExecute(String result) {
            // Do nothing
            loadInfo();
            Log.i(TAG, "onPostExecute: Done!!!");
        }
    }
}