using Herse.Models;
using KaraokePlayer.Classes;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace KaraokePlayer
{
    public partial class SongInfoForm : Form
    {
        public SongInfoForm()
        {
            InitializeComponent();
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.WindowState = FormWindowState.Maximized;
            this.ShowInTaskbar = false;
            this.TopMost = true;
            
            // Calculate dynamic positioning after form is loaded
            this.Load += SongInfoForm_Load;
        }

        private void SongInfoForm_Load(object sender, EventArgs e)
        {
            CalculateDynamicPositions();
        }

        private void CalculateDynamicPositions()
        {
            // Get the actual screen dimensions
            int screenHeight = this.ClientSize.Height;
            int screenWidth = this.ClientSize.Width;
            
            // Calculate font scaling factor based on screen size
            // Base scaling on the smaller dimension to ensure everything fits
            float baseScale = Math.Min(screenHeight / 800f, screenWidth / 1200f);
            float fontScale = Math.Max(0.8f, Math.Min(2.0f, baseScale)); // Limit scale between 0.8x and 2.0x
            
            // Calculate spacing between labels (increases with font size)
            int labelSpacing = (int)(30 * fontScale);
            
            // Update font sizes
            upNextLabel.Font = new Font("Segoe UI", 24 * fontScale, FontStyle.Regular);
            singerLabel.Font = new Font("Segoe UI", 42 * fontScale, FontStyle.Bold);
            artistLabel.Font = new Font("Segoe UI", 36 * fontScale, FontStyle.Regular);
            songTitleLabel.Font = new Font("Segoe UI", 48 * fontScale, FontStyle.Bold);
            
            // Calculate proper label heights using font metrics
            using (Graphics g = this.CreateGraphics())
            {
                // Get font metrics for each label
                SizeF upNextSize = g.MeasureString(upNextLabel.Text, upNextLabel.Font);
                SizeF singerSize = g.MeasureString(singerLabel.Text, singerLabel.Font);
                SizeF artistSize = g.MeasureString(artistLabel.Text, artistLabel.Font);
                SizeF songTitleSize = g.MeasureString(songTitleLabel.Text, songTitleLabel.Font);
                
                // Add extra padding for descenders (about 20% of font size)
                int descenderPadding = (int)(fontScale * 8);
                int totalLabelHeight = (int)(upNextSize.Height + descenderPadding) + 
                                     (int)(singerSize.Height + descenderPadding) + 
                                     (int)(artistSize.Height + descenderPadding) + 
                                     (int)(songTitleSize.Height + descenderPadding);
                totalLabelHeight += (labelSpacing * 3); // Add spacing between labels
                
                // Calculate available space and top padding
                int availableSpace = screenHeight - totalLabelHeight;
                int topPadding = availableSpace / 2;
                
                // Resize labels to fit the actual text height plus descender padding
                upNextLabel.Size = new Size(upNextLabel.Width, (int)upNextSize.Height + descenderPadding);
                singerLabel.Size = new Size(singerLabel.Width, (int)singerSize.Height + descenderPadding);
                artistLabel.Size = new Size(artistLabel.Width, (int)artistSize.Height + descenderPadding);
                songTitleLabel.Size = new Size(songTitleLabel.Width, (int)songTitleSize.Height + descenderPadding);
                
                // Position labels dynamically with spacing
                upNextLabel.Location = new Point(upNextLabel.Location.X, topPadding);
                singerLabel.Location = new Point(singerLabel.Location.X, topPadding + upNextLabel.Height + labelSpacing);
                artistLabel.Location = new Point(artistLabel.Location.X, topPadding + upNextLabel.Height + labelSpacing + singerLabel.Height + labelSpacing);
                songTitleLabel.Location = new Point(songTitleLabel.Location.X, topPadding + upNextLabel.Height + labelSpacing + singerLabel.Height + labelSpacing + artistLabel.Height + labelSpacing);
            }
            

        }

        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;
            }
            
            // Recalculate positioning after text changes to ensure proper sizing
            CalculateDynamicPositions();
        }
    }
}