// class that handles low-level rendering operations, such as drawing pixels and shapes to the display.
// This class is framework-agnostic and focuses solely on manipulating a 1-bit per pixel buffer.
// Constructor Args:
// uint8_t* buffer: Pointer to the bit buffer
// int width: Display width in pixels
// int height: Display height in pixels

#ifndef LOW_LEVEL_RENDER_H
#define LOW_LEVEL_RENDER_H

#include <cstdint>
#include <string>
#include <vector>

// Font extern declarations
extern const unsigned char font_5x5[96][6];
extern const unsigned char font_7linedigital[96][6];
extern const unsigned char font_BMplain[96][6];
extern const unsigned char font_Blokus[96][6];
extern const unsigned char font_HISKYF21[96][6];
extern const unsigned char font_Minimum[96][6];
extern const unsigned char font_SUPERDIG[96][6];
extern const unsigned char font_acme_5_outlines[96][6];
extern const unsigned char font_aztech[96][6];
extern const unsigned char font_crackers[96][6];
extern const unsigned char font_haiku[96][6];
extern const unsigned char font_sloth[96][6];
extern const unsigned char font_zxpix[96][6];

class LowLevelRenderer {
private:
    uint8_t* bit_buffer;
    int V_WIDTH;
    int V_HEIGHT;
    const unsigned char (*current_font)[96][6];
    bool clipping_enabled;
    int clip_x, clip_y, clip_width, clip_height;
    void draw_corner_arc(int center_x, int center_y, int radius, int quadrant, bool on);
    void fill_bottom_flat_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
    void fill_top_flat_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
    bool is_point_in_clip_rect(int x, int y);

public:
    LowLevelRenderer(uint8_t* buffer, int width, int height);

    // Font management
    void set_font(const unsigned char (*font)[96][6]);

    // --- 1-BIT DRAWING PRIMITIVES ---
    void set_pixel(int x, int y, bool on);
    void draw_line(int x0, int y0, int x1, int y1, bool on);
    void draw_rectangle(int x, int y, int width, int height, bool on);
    void draw_filled_rectangle(int x, int y, int width, int height, bool on);
    void draw_rounded_rectangle(int x, int y, int width, int height, int radius, bool on);
    void draw_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
    void draw_filled_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
    void draw_ellipse(int center_x, int center_y, int radius_x, int radius_y, bool on);
    void draw_filled_ellipse(int center_x, int center_y, int radius_x, int radius_y, bool on);
    void draw_polygon(const std::vector<std::pair<int, int>>& points, bool on);
    void draw_filled_polygon(const std::vector<std::pair<int, int>>& points, bool on);
    void draw_arc(int center_x, int center_y, int radius, int start_angle, int end_angle, bool on);
    
    // Clipping functions
    void set_clip_rect(int x, int y, int width, int height);
    void reset_clip_rect();
    bool is_clipping_enabled() const;
    
    // Buffer operations
    void invert_buffer();
    void clear_buffer();
    
    void draw_circle(int x, int y, int radius, bool on);
    void draw_filled_circle(int x, int y, int radius, bool on);
    void draw_char_vcol(int x, int y, char c);
    void draw_string(int x, int y, const std::string &text, int spacing = 1);
    void draw_char_scaled(int x, int y, char c, int scale);
    void draw_string_scaled(int x, int y, const char* text, int scale, int spacing = 1);
};

#endif // LOW_LEVEL_RENDER_H