WarningOverlayForm.cs

using System;
using System.Diagnostics;
using System.Drawing;
using System.Media;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace KidTimerLock
{
    public partial class WarningOverlayForm : Form
    {
        private Timer flashTimer;
        // private int flashCount = 0;
        private int currentFlashCount = 0;

        public WarningOverlayForm(string message)
        {
            InitializeComponent();
            FormBorderStyle = FormBorderStyle.None;
            StartPosition = FormStartPosition.Manual;
            TopMost = true;
            ShowInTaskbar = false;
            BackColor = AppConfig.OverlayColour; // Use hardcoded (for now) overlay colour
            Opacity = 0.75;
            Size = new Size(250, 50);
            Location = new Point(
                Screen.PrimaryScreen.WorkingArea.Width / 2 - Width / 2,
                Screen.PrimaryScreen.WorkingArea.Height / 2 - Height / 2
            );

            var label = new Label
            {
                Text = message,
                ForeColor = AppConfig.TextColour, // Use hardcoded text colour
                Font = AppConfig.OverlayFont, // Use hardcoded font
                Dock = DockStyle.Fill,
                TextAlign = ContentAlignment.MiddleCenter
            };

            Controls.Add(label);

            // Start the flashing timer
            flashTimer = new Timer();
            flashTimer.Interval = ConfigManager.Config.FlashInterval; // Use configurable interval
            flashTimer.Tick += flashTimer_Tick;
            flashTimer.Start();
            if (ConfigManager.Config.AudibleBeep) Task.Run(() => Console.Beep(1000, ConfigManager.Config.FlashInterval)); // beep on first flash - messy but whatever

            //// Start the close timer
            //var closeTimer = new Timer();
            //closeTimer.Interval = flashTimer.Interval * ConfigManager.Config.FlashCount * 2; // Total duration for which overlay is active
            //Debug.WriteLine($"{flashTimer.Interval}");
            //Debug.WriteLine($"{closeTimer.Interval}");
            //closeTimer.Tick += (s, e) => { Close(); };
            //closeTimer.Start();
        }

        private void flashTimer_Tick(object sender, EventArgs e)
        {
            
            // Toggle visibility
            this.Visible = !this.Visible;

            // Only count a full flash cycle (on+off), i.e. every 2 ticks
            if (!this.Visible)
            {
                currentFlashCount++;
                
                if (currentFlashCount >= ConfigManager.Config.FlashCount)
                {
                    flashTimer.Stop();
                    this.Close();
                }
            } else
            {
                if (ConfigManager.Config.AudibleBeep) Task.Run(() => Console.Beep(1000, ConfigManager.Config.FlashInterval)); // beep on first flash - messy but whatever

            }
        }

        private void WarningOverlayForm_Load(object sender, EventArgs e)
        {

        }

        public static void CloseAllOverlays()
        {
            foreach (Form openForm in Application.OpenForms)
            {
                if (openForm is WarningOverlayForm)
                {
                    openForm.Close(); 
                    break;
                }
            }

            // Also reset any state flags if needed
            // TimerForm.warningsShown.Clear();

        }


    }
}