using Herse.Models;
using KaraokePlayer.Classes;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace KaraokePlayer
{
    public partial class SongInfoForm : Form
    {
        private Timer fadeTimer;
        private Timer pulseTimer;
        private int fadeAlpha = 0;
        private bool isFadingIn = true;
        private int pulseAlpha = 255;
        private bool pulseDirection = false;

        public SongInfoForm()
        {
            InitializeComponent();
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.WindowState = FormWindowState.Normal;
            this.ShowInTaskbar = false;
            this.TopMost = true;
            
            // Enable double buffering to prevent flickering
            SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.DoubleBuffer, true);
            
            // Add paint event for gradient background
            mainPanel.Paint += MainPanel_Paint;
            
            // Setup fade timer
            fadeTimer = new Timer();
            fadeTimer.Interval = 20;
            fadeTimer.Tick += FadeTimer_Tick;
            
            // Setup pulse timer for "UP NEXT" label
            pulseTimer = new Timer();
            pulseTimer.Interval = 50;
            pulseTimer.Tick += PulseTimer_Tick;
            
            // Start fade in effect
            StartFadeIn();
        }

        private void StartFadeIn()
        {
            fadeAlpha = 0;
            isFadingIn = true;
            fadeTimer.Start();
            pulseTimer.Start();
        }

        private void PulseTimer_Tick(object sender, EventArgs e)
        {
            if (pulseDirection)
            {
                pulseAlpha += 5;
                if (pulseAlpha >= 255)
                {
                    pulseAlpha = 255;
                    pulseDirection = false;
                }
            }
            else
            {
                pulseAlpha -= 5;
                if (pulseAlpha <= 150)
                {
                    pulseAlpha = 150;
                    pulseDirection = true;
                }
            }
            
            upNextLabel.ForeColor = System.Drawing.Color.FromArgb(pulseAlpha, 255, 128, 0);
        }

        private void FadeTimer_Tick(object sender, EventArgs e)
        {
            if (isFadingIn)
            {
                fadeAlpha += 10;
                if (fadeAlpha >= 255)
                {
                    fadeAlpha = 255;
                    fadeTimer.Stop();
                }
            }
            else
            {
                fadeAlpha -= 10;
                if (fadeAlpha <= 0)
                {
                    fadeAlpha = 0;
                    fadeTimer.Stop();
                    this.Hide();
                }
            }
            
            // Update opacity
            this.Opacity = fadeAlpha / 255.0;
            mainPanel.Invalidate();
        }

        private void MainPanel_Paint(object sender, PaintEventArgs e)
        {
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
            
            // Create gradient background
            using (LinearGradientBrush brush = new LinearGradientBrush(
                mainPanel.ClientRectangle,
                System.Drawing.Color.FromArgb(30, 30, 50),
                System.Drawing.Color.FromArgb(20, 20, 30),
                LinearGradientMode.Vertical))
            {
                e.Graphics.FillRectangle(brush, mainPanel.ClientRectangle);
            }
            
            // Add subtle radial gradient overlay for depth
            using (GraphicsPath path = new GraphicsPath())
            {
                path.AddEllipse(-300, -300, mainPanel.Width + 600, mainPanel.Height + 600);
                using (PathGradientBrush pgb = new PathGradientBrush(path))
                {
                    pgb.CenterColor = System.Drawing.Color.FromArgb(40, 40, 80);
                    pgb.SurroundColors = new System.Drawing.Color[] { System.Drawing.Color.FromArgb(0, 0, 0) };
                    e.Graphics.FillPath(pgb, path);
                }
            }
            
            // Add subtle border glow
            using (Pen glowPen = new Pen(System.Drawing.Color.FromArgb(50, 100, 200), 2))
            {
                glowPen.LineJoin = LineJoin.Round;
                e.Graphics.DrawRectangle(glowPen, 2, 2, mainPanel.Width - 4, mainPanel.Height - 4);
            }
        }

        public void Update(QueueItem queueItem)
        {
            if (queueItem?.Singer != null)
            {
                singerLabel.Text = queueItem.Singer.Name;
            }
            
            if (queueItem?.Song != null)
            {
                artistLabel.Text = queueItem.Song.Artist;
                songTitleLabel.Text = queueItem.Song.Title;
            }
            
            // Force a repaint to update the gradient
            mainPanel.Invalidate();
        }

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            fadeTimer?.Stop();
            fadeTimer?.Dispose();
            pulseTimer?.Stop();
            pulseTimer?.Dispose();
            base.OnFormClosing(e);
        }
    }
}