import javax.swing.*;
import java.awt.*;
import java.io.BufferedReader;
import java.io.FileReader;

class Gui extends JFrame {

    private int[][] inputMatrix = new int[100][100];
    private int[][] outputMatrix = new int[100][100];
    private int rows, columns;
    private JLabel outputMatrixLabel = new JLabel();

    Gui() {
        super("Matrix");

        setSize(500, 500);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        JPanel content = new JPanel();
        content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));

        JLabel answerLabel = new JLabel();

        answerLabel.setText("Result matrix: ");
        answerLabel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));

        outputMatrixLabel.setBorder(BorderFactory.createEmptyBorder(20, 10, 20, 20));

        JButton openFileButton = new JButton("Open file");
        openFileButton.setSize(new Dimension(100, 100));
        openFileButton.setMargin(new Insets(5, 5, 5, 5));
        openFileButton.addActionListener(e -> {
            FileDialog openFile = new FileDialog(this, "Choose file", FileDialog.LOAD);
            openFile.setVisible(true);
            String file = openFile.getDirectory() + openFile.getFile();

            if (file.contains("null")) return;

            System.out.println("file : " + file);

            try {
                BufferedReader reader = new BufferedReader(new FileReader(file));
                int i = 0, j;
                String line;
                do {
                    line = reader.readLine();
                    j = 0;
                    String[] numbers = line.split(" ");
                    for (String number : numbers) {
                        System.out.print(number + " ");
                        inputMatrix[i][j] = Integer.parseInt(number);
                        j++;
                    }
                    System.out.println();
                    i++;
                    rows = i;
                    columns = j;

                } while (line != null);
                reader.close();

            } catch (Exception e1) {
                e1.printStackTrace();
            }

            System.out.println("Rows: " + rows + "\nColumns: " + columns);

            int[][] deletedRows = new int[rows][columns];
            int[][] deletedColumns = new int[rows][columns];
            int leftRowsCount = 0;
            int leftColumnsCount = 0;

            for (int i = 0; i < rows; i++) {
                int count = 0;
                for (int j = 0; j < columns; j++)
                    if (inputMatrix[i][j] == 0)
                        count++;
                if (count != columns) {
                    for (int j = 0; j < columns; j++)
                        deletedRows[leftRowsCount][j] = inputMatrix[i][j];
                    leftRowsCount++;
                }
            }

            System.out.println("Result rows: " + leftRowsCount + "\nResult columns: " + columns);

            for (int i = 0; i < leftRowsCount; i++) {
                for (int j = 0; j < columns; j++)
                    System.out.print(deletedRows[i][j] + " ");
                System.out.println();
            }

            System.out.println();


            for (int j = 0; j < columns; j++) {
                int count = 0;
                for (int i = 0; i < leftRowsCount; i++)
                    if (deletedRows[i][j] == 0)
                        count++;
                if (count != leftRowsCount) {
                    for (int i = 0; i < leftRowsCount; i++)
                        deletedColumns[i][leftColumnsCount] = deletedRows[i][j];
                    leftColumnsCount++;
                }
            }

            System.out.println("Result rows: " + leftRowsCount + "\nResult columns: " + leftColumnsCount);

            for (int i = 0; i < leftRowsCount; i++) {
                for (int j = 0; j < leftColumnsCount; j++) {
                    System.out.print(deletedColumns[i][j] + " ");
                    outputMatrix[i][j] = deletedColumns[i][j];
                }
                System.out.println();
            }

            drawOutputMatrix(leftRowsCount, leftColumnsCount);

        });

        content.add(openFileButton);
        content.add(answerLabel);
        content.add(outputMatrixLabel);


        getContentPane().add(content);
    }

    void drawOutputMatrix(int rows, int columns) {
        String matrixToString = "<html>";
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++)
                matrixToString += outputMatrix[i][j] + " ";
            matrixToString += "<br/>";
        }
        matrixToString += "</html>";

        outputMatrixLabel.setText(matrixToString);
    }

}