using System.Diagnostics.CodeAnalysis;
using Pathfinding;
using System.Drawing;
using System.Drawing.Imaging;
using OSMDatastructure.Graph;

namespace RenderPath;

public class Renderer
{
    [SuppressMessage("Interoperability", "CA1416:Plattformkompatibilität überprüfen")]
    public static Bitmap DrawFromPath(List<PathNode> nodes)
    {
        float minLat = nodes.Min(node => node.coordinates.latitude);
        float minLon = nodes.Min(node => node.coordinates.longitude);
        float maxLat = nodes.Max(node => node.coordinates.latitude);
        float maxLon = nodes.Max(node => node.coordinates.longitude);

        float latDiff = maxLat - minLat;
        float lonDiff = maxLon - minLon;

        const int imageMaxSize = 10000;
        float scaleFactor = latDiff > lonDiff ? imageMaxSize / latDiff : imageMaxSize / lonDiff;

        int pixelsX = (int)(lonDiff * scaleFactor);
        int pixelsY = (int)(latDiff * scaleFactor);

        Bitmap ret = new Bitmap(pixelsX, pixelsY, PixelFormat.Format32bppRgb);

        Graphics g = Graphics.FromImage(ret);
        Pen p = new Pen(Color.Black, 2);
        g.Clear(Color.White);

        for (int i = 0; i < nodes.Count - 1; i++)
        {
            Coordinates c1 = nodes[i].coordinates;
            Coordinates c2 = nodes[i+1].coordinates;
            Point p1 = new(Convert.ToInt32((c1.longitude - minLon) * scaleFactor), Convert.ToInt32((maxLat - c1.latitude) * scaleFactor));
            Point p2 = new(Convert.ToInt32((c2.longitude - minLon) * scaleFactor), Convert.ToInt32((maxLat - c2.latitude) * scaleFactor));
            g.DrawLine(p, p1, p2);
        }
        
        ret.Save(@"D:\render.png", ImageFormat.Bmp);
        return ret;
    }
}