using AC2RE.Definitions;
using LandblockExtraction.DatEngine;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace LandblockExtraction.AtlasMaker;
public class TerrainAtlasManager {
    private PortalEngine portalEngine;
    private AtlasBuilder atlasBuilder;

    public Dictionary<int, Vector2> textureCoord;
    
    public TerrainAtlasManager(PortalEngine portalEngine) {
        this.portalEngine = portalEngine;
        textureCoord = new Dictionary<int, Vector2>();
        atlasBuilder = new AtlasBuilder(portalEngine);
    }
    public void ExtractTexture() {
        foreach(var terrain in portalEngine.cTerrainDesc.terrains) {
            foreach(var surface in portalEngine.cSurfaceDesc.surfaces) {
                if(surface.surfIndex == terrain.surfaceInfo) {
                    atlasBuilder.AddTexture(surface.terrainMaterials.First().baseMaterials.First().materialDid);
                }
            }
            textureCoord.Add((int)terrain.terrainIndex, Vector2.Zero);
        }
    }
    public void GenerateAtlas() {
        atlasBuilder.GenerateAtlas();
    }
    public void GenerateUV() {
        int count = (int)Math.Ceiling(Math.Sqrt(textureCoord.Count));
        int atlasSize = (int)64 * count;
        int index = 0;
        foreach(var terrain in textureCoord) {
            int x = (index % count) * (int)64;
            int y = (index / count) * (int)64;
            textureCoord[index] = new Vector2(x, y);
            index++;
        }
    }
}