using Godot;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;

public class WorldChunk : Spatial
{
    // ui elements
    
    // scene nodes
    private MeshInstance PlaneRectMesh;

    // resources
    
    // exports
    [Export] public Texture TileTypeMap;
    [Export] public Texture NavigationMap;
    [Export] public Texture HeightMap;
    [Export] public readonly int size = 32;

    [Export] public Vector2 ChunkAddress;
    // [Export] public Vector2 Size = new Vector2(1, 1);

    // signals
    // delegate void OnCoordClicked(Vector2 world_pos);

    // other members
    public Rect2 PlaneRect;
    public Color DebugColor = Colors.White;

    public WorldChunk()
    {
        
    }
    
    public WorldChunk(int size)
    {
        
    }
    
    // other members
    public void SaveToFile(String chunkName)
    {
        Image image = new Image();
        
        image.CreateFromData(size, size, false, Image.Format.Rgba8, TileTypeMap.GetData().GetData());
        image.SavePng(chunkName + "_tileType.png");
        
        image.CreateFromData(size, size, false, Image.Format.Rgba8, NavigationMap.GetData().GetData());
        image.SavePng(chunkName + "_navigationMap.png");

        image.CreateFromData(size, size, false, Image.Format.Rgba8, HeightMap.GetData().GetData());
        image.SavePng(chunkName + "_heightMap.png");
    }

    public void LoadFromFile(String chunkName)
    {
        
    }
    
    // Called when the node enters the scene tree for the first time.
    public override void _Ready()
    {
        PlaneRectMesh = (MeshInstance) FindNode("PlaneRectMesh");
        Debug.Assert(PlaneRectMesh != null);
        
        Transform planeRectTransform = Transform.Identity;
        planeRectTransform = planeRectTransform.Scaled(new Vector3(PlaneRect.Size.x * 0.5f, 1, PlaneRect.Size.y * 0.5f));
        planeRectTransform.origin.x = PlaneRect.GetCenter().x;
        planeRectTransform.origin.z = PlaneRect.GetCenter().y;
        
        PlaneRectMesh.Transform = planeRectTransform;

        PlaneRectMesh.MaterialOverride = new SpatialMaterial();
        ((SpatialMaterial)PlaneRectMesh.MaterialOverride).AlbedoColor = DebugColor;
        ((SpatialMaterial)PlaneRectMesh.MaterialOverride).FlagsTransparent = true;
    }
    
//  // Called every frame. 'delta' is the elapsed time since the previous frame.
//  public override void _Process(float delta)
//  {
//      
//  }
}