#pragma once

#include "../../Common/Sizes.hpp"
#include <string_view>
#include "RawImage.hpp"

namespace MC::GFX::Image {

class PPMParser {
public:
    explicit PPMParser(std::string_view source) : m_source(source) {}

    RawImage parse();
private:
    enum PPMType {
        None,
        P3,
        P6
    };

    struct PPMHeader {
        PPMType type;
        U32 width;
        U32 height;
        U8 max_color;
    };

    PPMHeader parse_header();
    RawImage::Pixel parse_pixel(U8 max_color);
    U64 parse_sample();

    U64 chomp_number();
    std::string_view chomp_part();

    void skip_whitespace();
    void skip_comment();

    Bool is_eof() const;

    static constexpr RawImage::Pixel alpha_color{192, 0, 255};

    std::string_view m_source;
    U64 m_cursor = 0;
};

}