import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;
import java.io.StringReader;

public class WeatherApp extends JFrame {

    private JLabel cityLabel;
    private JTextField cityField;
    private JButton getWeatherButton;
    private JTextArea weatherTextArea;

    private static final String API_KEY = "WMxvv0mQNHNSC1j5bW9BDu1PJVbzX9s";
    private static final String API_URL = "https://api.tomorrow.io/v4/weather/forecast?location=42.3478,-71.0466&apikey=WMxvv0mQNNSC1j5bW9BDu1fPJVbzX9s";

    public WeatherApp() {
        setTitle("Weather App");
        setSize(400, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        initComponents();
        addListeners();

        setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
        add(cityLabel);
        add(cityField);
        add(getWeatherButton);
        add(new JScrollPane(weatherTextArea));

        setLocationRelativeTo(null);
        setVisible(true);
    }

    private void initComponents() {
        cityLabel = new JLabel("Enter City:");
        cityField = new JTextField();
        getWeatherButton = new JButton("Get Weather");
        weatherTextArea = new JTextArea();
        weatherTextArea.setEditable(false);
    }

    private void addListeners() {
        getWeatherButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String cityName = cityField.getText();
                String weatherInfo = getWeatherInfo(cityName);
                weatherTextArea.setText(weatherInfo);
            }
        });
    }

    private String getWeatherInfo(String cityName) {
        try {
            String apiUrl = String.format(API_URL, cityName, API_KEY);
            URL url = new URL(apiUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                StringBuilder response = new StringBuilder();
                String line;

                while ((line = reader.readLine()) != null) {
                    response.append(line);
                    System.out.println(response);
                }

                reader.close();
                return parseWeatherData(response.toString());
            } else {
                return "Error: Unable to fetch weather data.";

            }
        } catch (Exception ex) {
            ex.printStackTrace();
            return "Error: " + ex.getMessage();
        }
    }

    private String parseWeatherData(String jsonData) {
        try {
            // Parse JSON using javax.json
            JsonReader jsonReader = Json.createReader(new StringReader(jsonData));
            JsonObject json = jsonReader.readObject();

            // Extract relevant information from the JSON object
            JsonObject weatherData = json.getJsonObject("data");
            JsonObject currentConditions = weatherData.getJsonObject("current");
            String temperature = currentConditions.getString("temperature");

            // Build a formatted message with the extracted information
            return "Current Temperature: " + temperature + "°C";
        } catch (Exception e) {
            e.printStackTrace();
            return "Error parsing weather data.";
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new WeatherApp();
            }
        });
    }
}