using System.Diagnostics;
using PrintServiceTray.Services;
using PrintServiceTray.Models;

namespace PrintServiceTray;

public class TrayApplicationContext : ApplicationContext
{
    private readonly NotifyIcon _trayIcon;
    private readonly ServiceClient _serviceClient;
    private readonly System.Windows.Forms.Timer _refreshTimer;
    private readonly ToolStripMenuItem _queueStatusItem;
    private readonly ToolStripMenuItem _serviceStatusItem;

    public TrayApplicationContext()
    {
        try
        {
            _serviceClient = new ServiceClient();

            // Create context menu
            var contextMenu = new ContextMenuStrip();

            // Service status (at top)
            _serviceStatusItem = new ToolStripMenuItem("● Service Running")
            {
                Enabled = false,
                Font = new Font(contextMenu.Font, FontStyle.Bold)
            };
            contextMenu.Items.Add(_serviceStatusItem);
            contextMenu.Items.Add(new ToolStripSeparator());

            // Queue status section
            _queueStatusItem = new ToolStripMenuItem("Queue Status")
            {
                Enabled = false
            };
            contextMenu.Items.Add(_queueStatusItem);

            var viewQueueItem = new ToolStripMenuItem("View Full Queue...");
            viewQueueItem.Click += ViewQueue_Click;
            contextMenu.Items.Add(viewQueueItem);

            contextMenu.Items.Add(new ToolStripSeparator());

            // Configuration
            var configureItem = new ToolStripMenuItem("Configure Printers...");
            configureItem.Click += Configure_Click;
            contextMenu.Items.Add(configureItem);

            contextMenu.Items.Add(new ToolStripSeparator());

            // Exit
            var exitItem = new ToolStripMenuItem("Exit");
            exitItem.Click += Exit_Click;
            contextMenu.Items.Add(exitItem);

            // Create tray icon
            _trayIcon = new NotifyIcon
            {
                Icon = SystemIcons.Information,
                ContextMenuStrip = contextMenu,
                Visible = true,
                Text = "LAAPC Print Service"
            };

            _trayIcon.DoubleClick += TrayIcon_DoubleClick;
            
            // Show startup notification
            _trayIcon.ShowBalloonTip(2000, "LAAPC Print Service", "Tray app started", ToolTipIcon.Info);

            // Set up refresh timer (every 2 seconds)
            _refreshTimer = new System.Windows.Forms.Timer
            {
                Interval = 2000
            };
            _refreshTimer.Tick += RefreshTimer_Tick;
            _refreshTimer.Start();

            // Initial refresh
            _ = RefreshStatusAsync();
        }
        catch (Exception ex)
        {
            MessageBox.Show($"Failed to initialize tray app: {ex.Message}\n\n{ex.StackTrace}", 
                "Initialization Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            throw;
        }
    }

    private async void RefreshTimer_Tick(object? sender, EventArgs e)
    {
        await RefreshStatusAsync();
    }

    private async Task RefreshStatusAsync()
    {
        try
        {
            var status = await _serviceClient.GetQueueStatusAsync();

            if (status.Success)
            {
                _serviceStatusItem.Text = "● Service Running";
                _serviceStatusItem.ForeColor = Color.Green;

                // Update queue status
                if (status.Jobs.Count == 0)
                {
                    _queueStatusItem.Text = "Queue Status: Empty";
                    _queueStatusItem.DropDownItems.Clear();
                }
                else
                {
                    _queueStatusItem.Text = $"Queue Status ({status.Jobs.Count} {(status.Jobs.Count == 1 ? "job" : "jobs")})";
                    _queueStatusItem.Enabled = true;

                    // Update dropdown items with job list
                    _queueStatusItem.DropDownItems.Clear();
                    
                    foreach (var job in status.Jobs.Take(10)) // Show max 10 in menu
                    {
                        var statusIcon = job.Status == "Processing" ? "●" : "○";
                        var jobText = $"{statusIcon} {job.Status}: {job.FileName}";
                        
                        if (job.PrinterName != null)
                        {
                            jobText += $" ({job.PrinterName})";
                        }
                        
                        if (job.CurrentPage.HasValue && job.TotalPages.HasValue)
                        {
                            jobText += $" - Page {job.CurrentPage}/{job.TotalPages}";
                        }

                        var jobItem = new ToolStripMenuItem(jobText) { Enabled = false };
                        _queueStatusItem.DropDownItems.Add(jobItem);
                    }

                    if (status.Jobs.Count > 10)
                    {
                        _queueStatusItem.DropDownItems.Add(new ToolStripSeparator());
                        var moreItem = new ToolStripMenuItem($"... and {status.Jobs.Count - 10} more")
                        {
                            Enabled = false
                        };
                        _queueStatusItem.DropDownItems.Add(moreItem);
                    }
                }

                // Update tooltip
                _trayIcon.Text = status.Jobs.Count == 0
                    ? "LAAPC Print Service - Queue empty"
                    : $"LAAPC Print Service - {status.Jobs.Count} job(s) in queue";
            }
            else
            {
                _serviceStatusItem.Text = "○ Service Not Running";
                _serviceStatusItem.ForeColor = Color.Red;
                _queueStatusItem.Text = "Queue Status: Unavailable";
                _queueStatusItem.DropDownItems.Clear();
                _trayIcon.Text = "LAAPC Print Service - Not running";
            }
        }
        catch (Exception ex)
        {
            Debug.WriteLine($"Error refreshing status: {ex.Message}");
        }
    }

    private void TrayIcon_DoubleClick(object? sender, EventArgs e)
    {
        // Double-click opens full queue view
        ViewQueue_Click(sender, e);
    }

    private void ViewQueue_Click(object? sender, EventArgs e)
    {
        // TODO: Open queue view window
        MessageBox.Show("Queue view window coming soon!", "LAAPC Print Service", MessageBoxButtons.OK, MessageBoxIcon.Information);
    }

    private void Configure_Click(object? sender, EventArgs e)
    {
        var configForm = new Forms.ConfigurationForm();
        configForm.ShowDialog();
    }

    private void Exit_Click(object? sender, EventArgs e)
    {
        _refreshTimer.Stop();
        _trayIcon.Visible = false;
        Application.Exit();
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            _refreshTimer?.Stop();
            _refreshTimer?.Dispose();
            _trayIcon?.Dispose();
        }
        base.Dispose(disposing);
    }
}