#pragma once

#include "../Common/Sizes.hpp"
#include "BiomeType.hpp"
#include "BlockType.hpp"
#include "../GFX/Mesh.hpp"

namespace MC::World {

class Chunk {
public:
    static constexpr U32 Width = 16;
    static constexpr U32 Height = 128;

    Chunk(I64 x, I64 y)
        : m_blocks{Width * Height * Width, {BlockType::Air}},
        m_position{(Real)x * Width, 0.0f, (Real)y * Width} {}

    struct BlockData {
        BlockData() : type(BlockType::Air) {}
        BlockData(BlockType t) : type(t), light{} {}

        BlockType type;
        U8 light;

        Bool empty() const { return type == BlockType::Air; }
    };

    const BlockData& at(U32 x, U32 y, U32 z) const;
    BlockData& at(U32 x, U32 y, U32 z);

    Bool is_empty(U32 x, U32 y, U32 z) const;

    struct Details {
        Matrix<Width, Width> landmass_values{};
        Matrix<Width, Width> hill_values{};

        Matrix<Width, Width> temperature_values{};
        Matrix<Width, Width> humidity_values{};

        Matrix<Width, Width, BiomeType> biome_values{};
    };
    void set_details(const Details& details) { m_details = details; }
    Details& details(){ return m_details; }

    Vector<3> position() const;

    static Bool is_valid_position(U32 x, U32 y, U32 z);
private:
    static U64 pos(U32 x, U32 y, U32 z);

    Vector<3> m_position;
    std::vector<BlockData> m_blocks;

    Details m_details;
};

}