/*
 Copyright (C) 2024 iEle <melephas@gmail.com>
 Copyright (C) 2024 retroelec <retroelec42@gmail.com>

 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
 Free Software Foundation; either version 3 of the License, or (at your
 option) any later version.

 This program is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 for more details.

 For the complete text of the GNU General Public License see
 http://www.gnu.org/licenses/.
*/
#pragma once

#include <cstdint>
#include "M5Cardputer.h"

class VIC
{
private:
    uint8_t *ram;
    M5Canvas canvas;
    // uint8_t *bitmap;
    uint8_t spritespritecoll[320];
    bool spritedatacoll[320];
    uint8_t startbyte;
    bool only38cols;

    inline void drawByteStdData(uint8_t data, uint16_t &idx, uint16_t &xp,
                                uint16_t col, uint16_t bgcol, uint8_t dx)
        __attribute__((always_inline));
    inline void drawByteMCData(uint8_t data, uint16_t &idx, uint16_t &xp,
                               uint16_t *tftColArr, bool *collArr, uint8_t dx)
        __attribute__((always_inline));
    void drawblankline(uint8_t line);
    inline bool shiftDyDx(uint8_t line, int8_t dy, uint8_t dx, uint16_t bgcol,
                          uint16_t &idx) __attribute__((always_inline));
    inline void drawOnly38ColsFrame(uint16_t tmpidx)
        __attribute__((always_inline));
    inline void drawStdCharModeInt(uint8_t *screenMap, uint16_t bgcol,
                                   uint8_t row, uint8_t dx, uint16_t &xp,
                                   uint16_t idxmap, uint16_t &idx)
        __attribute__((always_inline));
    void drawStdCharMode(uint8_t *screenMap, uint8_t bgColor, uint8_t line,
                         int8_t dy, uint8_t dx, uint16_t idx);
    inline void drawExtBGColCharModeInt(uint8_t *screenMap, uint8_t *bgColArr,
                                        uint8_t row, uint8_t dx, uint16_t &xp,
                                        uint16_t idxmap, uint16_t &idx)
        __attribute__((always_inline));
    void drawExtBGColCharMode(uint8_t *screenMap, uint8_t *bgColArr, uint8_t line,
                              int8_t dy, uint8_t dx, uint16_t idx);
    inline void drawMCCharModeInt(uint8_t *screenMap, uint16_t bgcol,
                                  uint16_t *tftColArr, uint8_t row, uint8_t dx,
                                  uint16_t &xp, uint16_t idxmap, uint16_t &idx)
        __attribute__((always_inline));
    void drawMCCharMode(uint8_t *screenMap, uint8_t bgColor1, uint8_t bgColor2,
                        uint8_t bgColor3, uint8_t line, int8_t dy, uint8_t dx,
                        uint16_t idx);
    inline void drawMCBitmapModeInt(uint8_t *multicolorBitmap, uint8_t *colorMap1,
                                    uint16_t *tftColArr, uint16_t cidx,
                                    uint16_t mcidx, uint8_t row, uint8_t dx,
                                    uint16_t &xp, uint16_t &idx)
        __attribute__((always_inline));
    void drawMCBitmapMode(uint8_t *multicolorBitmap, uint8_t *colorMap1,
                          uint8_t backgroundColor, uint8_t line, int8_t dy,
                          uint8_t dx, uint16_t idx);
    void drawStdBitmapModeInt(uint8_t *hiresBitmap, uint8_t *colorMap,
                              uint16_t hiidx, uint16_t &colidx, uint8_t row,
                              uint8_t dx, uint16_t &xp, uint16_t &idx);
    void drawStdBitmapMode(uint8_t *hiresBitmap, uint8_t *colorMap, uint8_t line,
                           int8_t dy, uint8_t dx, uint16_t idx);
    void drawSpriteDataSC(uint8_t bitnr, int16_t xpos, uint8_t ypos,
                          uint8_t *data, uint8_t color);
    void drawSpriteDataSCDS(uint8_t bitnr, int16_t xpos, uint8_t ypos,
                            uint8_t *data, uint8_t color);
    inline void drawSpriteDataMC2Bits(uint8_t idxc, uint16_t &idx, int16_t &xpos,
                                      uint8_t bitnr, uint16_t *tftcolor)
        __attribute__((always_inline));
    void drawSpriteDataMC(uint8_t bitnr, int16_t xpos, uint8_t ypos,
                          uint8_t *data, uint8_t color10, uint8_t color01,
                          uint8_t color11);
    void drawSpriteDataMCDS(uint8_t bitnr, int16_t xpos, uint8_t ypos,
                            uint8_t *data, uint8_t color10, uint8_t color01,
                            uint8_t color11);
    void drawSprites(uint8_t line);
    // inline void checkFrameColor() __attribute__((always_inline));

public:
    // profiling info
    uint8_t cntRefreshs;

    uint8_t *colormap;
    uint8_t *charset;
    uint8_t *chrom;

    uint8_t vicreg[0x40];
    uint8_t latchd011;
    uint8_t latchd012;
    uint16_t vicmem;
    uint16_t bitmapstart;
    uint16_t screenmemstart;
    uint16_t rasterline;
    uint8_t syncd020;
    bool screenblank;

    VIC(){};
    ~VIC() { canvas.deleteSprite(); };

    void initVarsAndRegs();
    void init(uint8_t *ram, uint8_t *charrom);
    void refresh(bool refreshframecolor);
    uint8_t nextRasterline();
    void drawRasterline();
};