using System;
using System.Windows.Forms;
using System.Drawing;

namespace KitchenTimer
{
    public class KitchenTimer : Form
    {
        private Timer timer;
        private Label timerLabel;
        private Button hourUpButton;
        private Button hourDownButton;
        private Button minuteUpButton;
        private Button minuteDownButton;
        private Button secondUpButton;
        private Button secondDownButton;
        private Button startButton;
        private Button pauseButton;
        private Button resetButton;
        private int remainingTime; // タイマーの残り時間（秒単位）
        private bool isPaused; // タイマーが一時停止中かどうかを示すフラグ
        private int pausedTime; // 一時停止した時点での残り時間

        public KitchenTimer()
        {
            InitializeComponent();
        }

        private void InitializeComponent()
        {
            timer = new Timer();
            timer.Interval = 1000; // 1秒ごとにタイマーを更新
            timer.Tick += new EventHandler(timer_Tick);

            timerLabel = new Label();
            timerLabel.Text = "00:00:00";
            timerLabel.TextAlign = ContentAlignment.MiddleCenter;
            timerLabel.Font = new Font("MS UI Gothic", 25, FontStyle.Bold);
            timerLabel.Location = new Point(25, 10);
            timerLabel.Size = new Size(150, 30);

            hourUpButton = new Button();
            hourUpButton.Text = "▲";
            hourUpButton.Click += new EventHandler(hourUpButton_Click);
            hourUpButton.Location = new Point(50, 50);

            hourDownButton = new Button();
            hourDownButton.Text = "▼";
            hourDownButton.Click += new EventHandler(hourDownButton_Click);
            hourDownButton.Location = new Point(50, 80);

            minuteUpButton = new Button();
            minuteUpButton.Text = "▲";
            minuteUpButton.Click += new EventHandler(minuteUpButton_Click);
            minuteUpButton.Location = new Point(100, 50);

            minuteDownButton = new Button();
            minuteDownButton.Text = "▼";
            minuteDownButton.Click += new EventHandler(minuteDownButton_Click);
            minuteDownButton.Location = new Point(100, 80);

            secondUpButton = new Button();
            secondUpButton.Text = "▲";
            secondUpButton.Click += new EventHandler(secondUpButton_Click);
            secondUpButton.Location = new Point(150, 50);

            secondDownButton = new Button();
            secondDownButton.Text = "▼";
            secondDownButton.Click += new EventHandler(secondDownButton_Click);
            secondDownButton.Location = new Point(150, 80);

            startButton = new Button();
            startButton.Text = "Start";
            startButton.Click += new EventHandler(startButton_Click);
            startButton.Location = new Point(50, 110);

            pauseButton = new Button();
            pauseButton.Text = "Pause";
            pauseButton.Enabled = false;
            pauseButton.Click += new EventHandler(pauseButton_Click);
            pauseButton.Location = new Point(50, 140);

            resetButton = new Button();
            resetButton.Text = "Reset";
            resetButton.Enabled = false;
            resetButton.Click += new EventHandler(resetButton_Click);
            resetButton.Location = new Point(50, 170);

            this.Controls.Add(timerLabel);
            this.Controls.Add(hourUpButton);
            this.Controls.Add(hourDownButton);
            this.Controls.Add(minuteUpButton);
            this.Controls.Add(minuteDownButton);
            this.Controls.Add(secondUpButton);
            this.Controls.Add(secondDownButton);
            this.Controls.Add(startButton);
            this.Controls.Add(pauseButton);
            this.Controls.Add(resetButton);

            this.Name = "MainForm";
            this.Text = "Kitchen タイマー";
            this.Width = 200;
            this.Height = 300;
        }

        private void hourUpButton_Click(object sender, EventArgs e)
        {
            int hours = int.Parse(timerLabel.Text.Substring(0, 2));
            hours++;
            if (hours > 23)
            {
                hours = 0;
            }
            timerLabel.Text = FormatTime(hours, int.Parse(timerLabel.Text..Substring(3, 2)), int.Parse(timerLabel.Text.Substring(6, 2)));
        }

        private void hourDownButton_Click(object sender, EventArgs e)
        {
            int hours = int.Parse(timerLabel.Text.Substring(0, 2));
            hours--;
            if (hours < 0)
            {
                hours = 23;
            }
            timerLabel.Text = FormatTime(hours, int.Parse(timerLabel.Text..Substring(3, 2)), int.Parse(timerLabel.Text.Substring(6, 2)));
        }

        private void minuteUpButton_Click(object sender, EventArgs e)
        {
            int minutes = int.Parse(timerLabel.Text.Substring(3, 2));
            minutes++;
            if (minutes > 59)
            {
                minutes = 0;
            }
            timerLabel.Text = FormatTime(int.Parse(timerLabel.Text.Substring(0, 2)), minutes, int.Parse(timerLabel.Text.Substring(6, 2)));
        }

        private void minuteDownButton_Click(object sender, EventArgs e)
        {
            int minutes = int.Parse(timerLabel.Text.Substring(3, 2));
            minutes--;
            if (minutes < 0)
            {
                minutes = 59;
            }
            timerLabel.Text = FormatTime(int.Parse(timerLabel.Text.Substring(0, 2)), minutes, int.Parse(timerLabel.Text.Substring(6, 2)));
        }

        private void secondUpButton_Click(object sender, EventArgs e)
        {
            int seconds = int.Parse(timerLabel.Text.Substring(6, 2));
            seconds++;
            if (seconds > 59)
            {
                seconds = 0;
            }
            timerLabel.Text = FormatTime(int.Parse(timerLabel.Text.Substring(0, 2)), int.Parse(timerLabel.Text.Substring(3, 2)), seconds);
        }

        private void secondDownButton_Click(object sender, EventArgs e)
        {
            int seconds = int.Parse(timerLabel.Text.Substring(6, 2));
            seconds--;
            if (seconds < 0)
            {
                seconds = 59;
            }
            timerLabel.Text = FormatTime(int.Parse(timerLabel.Text.Substring(0, 2)), int.Parse(timerLabel.Text.Substring(3, 2)), seconds);
        }

        private void startButton_Click(object sender, EventArgs e)
        {
            remainingTime = int.Parse(timerLabel.Text.Substring(0, 2)) * 3600 + int.Parse(timerLabel.Text.Substring(3, 2)) * 60 + int.Parse(timerLabel.Text.Substring(6, 2));
            timer.Start();
            startButton.Enabled = false;
            pauseButton.Enabled = true;
            resetButton.Enabled = true;
        }

        private void pauseButton_Click(object sender, EventArgs e)
        {
            if (!isPaused)
            {
                timer.Stop();
                pausedTime = remainingTime;
                isPaused = true;
                pauseButton.Text = "Resume";
            }
            else
            {
                timer.Start();
                isPaused = false;
                pauseButton.Text = "Pause";
            }
        }

        private void resetButton_Click(object sender, EventArgs e)
        {
            timer.Stop();
            timerLabel.Text = "00:00:00";
            startButton.Enabled = true;
            pauseButton.Enabled = false;
            resetButton.Enabled = false;
            isPaused = false;
            pauseButton.Text = "Pause";
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            remainingTime--;
            if (remainingTime <= 0)
            {
                timer.Stop();
                MessageBox.Show("時間が経過しました！", "タイマー終了", MessageBoxButtons.OK, MessageBoxIcon.Information);
                resetButton_Click(sender, e);
            }
            else
            {
                timerLabel.Text = FormatTime(remainingTime / 3600, (remainingTime % 3600) / 60, remainingTime % 60);
            }
        }

        private string FormatTime(int hours, int minutes, int seconds)
        {
            return hours.ToString("D2") + ":" + minutes.ToString("D2") + ":" + seconds.ToString("D2");
        }

        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new KitchenTimer());
        }
    }
}