Controller file

package sample;

import javafx.application.Platform;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.ComboBox;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;

import java.io.*;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;

public class Controller implements Initializable {
    //private static final Charset UTF_8 = Charset.forName("UTF-8");
    //private static final Charset ISO = Charset.forName("ISO-8859-1");

    private String[][] arrayCongtyDienluc = new String[0][];
    private String[][] arrayDienluc = new String[0][];

    private String fileSaveList = "data.dat";

    @FXML
    public ComboBox<String> Combo_congtydienluc;
    public ComboBox<String> Combo_dienluc;
    public TextField TF_maKH;
    public TextField TF_diachicuthe;
    public ListView<String> LV_saveList;

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        try {
            arrayCongtyDienluc = RequestDienluc.requestCongtyDienluc();
        } catch (IOException e) {
            e.printStackTrace();
        }

        for (String[] strings : arrayCongtyDienluc) {
            Combo_congtydienluc.getItems().add(strings[0]);
        }
        Combo_congtydienluc.getSelectionModel().select(0);

        try {
            getDienluc();
        } catch (IOException e) {
            LyoLibs.print("Không tải được thông tin cắt điện");
//            e.printStackTrace();
        }

        try {
            LV_saveList.getItems().addAll(loadSaveList());
        } catch (IOException e) {
            LyoLibs.print("data.dat chưa có!");
//            e.printStackTrace();
        }
    }

    public void getDienluc() throws IOException {
        String congtydienluc = Combo_congtydienluc.getValue();
        System.out.println(congtydienluc);
        for (String[] array1 : arrayCongtyDienluc) {
            if (array1[0] == congtydienluc) {
                arrayDienluc = RequestDienluc.requestDienluc(array1[1]);
                Combo_dienluc.getItems().clear();
                for (String[] array2 : arrayDienluc) {
                    Combo_dienluc.getItems().add(array2[0]);
                }
                Combo_dienluc.getSelectionModel().select(0);
                break;
            }
        }
    }

    public void searchButton() throws IOException {
        String id = TF_maKH.getText();

        if (id.isEmpty()) {
            String dienluc = Combo_dienluc.getValue().toString();
            for (String[] strings : arrayDienluc) {
                if (strings[0].equals(dienluc)) {
                    id = strings[1];
                    break;
                }
            }
        }

        String[] result = RequestDienluc.request(id, TF_diachicuthe.getText());
        LyoLibs.arrayPrint(result);
        ArrayDisplay.display(result);
    }

    public void addButton() throws IOException {
        String maKH = TF_maKH.getText();
        if (!maKH.isEmpty()) {
            LV_saveList.getItems().add(maKH);
        } else {
            String dienluc = Combo_dienluc.getValue();
            String madonvi = "";

            for (String[] item : arrayDienluc) {
                if (item[0].equals(dienluc)) {
                    madonvi = item[1];
                    break;
                }
            }
            String result = madonvi + "|" + TF_diachicuthe.getText() + "|" + Combo_dienluc.getValue() + "|" + Combo_congtydienluc.getValue();
            LV_saveList.getItems().add(result);
        }
        saveSaveList();
    }

    public void closeButton() {
        Platform.exit();
    }

    //TODO: Xem thông tin đã chọn
    public void showSaveListButton() throws IOException {
        String diachicuthe = "";
        String id = LV_saveList.getSelectionModel().getSelectedItem();
        if (id.contains("|")) {
            String[] items = id.split("\\|");
            id = items[0];
            diachicuthe = items[1];
        }
        ArrayDisplay.display(RequestDienluc.request(id, diachicuthe));
    }

    public void deleteSaveListButton() throws IOException {
        LV_saveList.getItems().remove(LV_saveList.getSelectionModel().getSelectedIndex());
        saveSaveList();
    }

    private void saveSaveList() throws IOException {
        String str = "";
        for (int i = 0; i < LV_saveList.getItems().size(); i++) {
            str += LV_saveList.getItems().get(i) + "\n";
        }
        BufferedWriter writer = new BufferedWriter(new FileWriter(fileSaveList));
        writer.write(str);
        writer.close();
        System.out.println("Đã lưu dữ liệu data.dat");
    }

    private List<String> loadSaveList() throws IOException {
        BufferedReader fileOpen = new BufferedReader(new FileReader(fileSaveList));
        List<String> lines = new ArrayList<>();

        String line = null;
        while ((line = fileOpen.readLine()) != null) {
            lines.add(line);
        }
        fileOpen.close();
        return lines;
    }

}