package hw2.task1;

import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.*;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.stage.Stage;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.concurrent.atomic.AtomicInteger;

public class Main extends Application {
    @Override
    public void start(Stage primaryStage) {
        Label welcome = new Label("Enter celsius temperatures");
        welcome.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));
        Button addButt = new Button();
        addButt.setText("+");
        Button createButt = new Button();
        createButt.setText("Create table");
        GridPane root = new GridPane();
        root.setHgap(10);
        root.setVgap(10);
        root.setAlignment(Pos.CENTER);
        root.add(addButt, 1, 0);
        root.add(welcome, 0, 0);
        root.add(createButt, 2, 0);
        Scene scene = new Scene(root, 500, 500);
        primaryStage.setTitle("Table of temperature");
        primaryStage.setScene(scene);
        primaryStage.show();

        AtomicInteger n = new AtomicInteger(1);
        LinkedList<TextField> listText = new LinkedList<TextField>();
        addButt.setOnAction(event -> {
            n.getAndIncrement();
            var field = new TextField();
            root.add(field, 0, n.get());
            listText.add(field);
        });
        ArrayList<Label> kelvinList = new ArrayList<Label>();
        ArrayList<Label> fahrList = new ArrayList<Label>();

        createButt.setOnAction(event -> {
            try {
                for (int i = 0; i < listText.size(); i++) {
                    if (i >= kelvinList.size()) {
                        var kelvin = new Label(Double.parseDouble(listText.get(i).getText()) + 273.15 + " K");
                        var fahr = new Label(Math.round(Double.parseDouble(listText.get(i).getText()) * 1.8 + 32) + " °F");
                        root.add(kelvin, 1, i + 2);
                        root.add(fahr, 2, i + 2);
                        fahrList.add(fahr);
                        kelvinList.add(kelvin);
                    } else {
                        kelvinList.get(i).setText(Double.parseDouble(listText.get(i).getText()) + 273.15 + " K");
                        fahrList.get(i).setText(Math.round(Double.parseDouble(listText.get(i).getText()) * 1.8 + 32) + " °F");
                    }
                }
                createButt.setText("Create table");
            } catch (NumberFormatException e) {
                createButt.setText("Only number!");
            }
        });
    }

    public static void main(String[] args) {
        launch(args);
    }
}