#include "sim_oled.h"
#include "graphics.h"
#include <conio.h>

static uint32_t pixelColor, backgroundColor;
static int scaleFactor, w, h;
uint8_t border;

#define    GET_BIT(x, bit)    ((x & (1 << bit)) >> bit)

void SIM_OLED_INIT(int width, int height, uint32_t pixcolor, uint32_t backcolor, int scale, uint8_t b) {
    w = width * scale;
    h = height * scale;
    pixelColor = pixcolor;
    backgroundColor = backcolor;
    scaleFactor = scale;
    border = b;
}

void SIM_OLED_START() {
    initgraph(w, h);
    setbkcolor(backgroundColor);
    setfillcolor(pixelColor);
    cleardevice();
}

void SIM_OLED_STOP() {
    closegraph();
}

void drawOledPixel(int oledX, int oledY) {
    int startX = oledX * scaleFactor;
    int startY = oledY * scaleFactor;
    if (border) fillrectangle(startX + 1, startY + 1, startX + scaleFactor - 1, startY + scaleFactor - 1);
    else solidrectangle(startX, startY, startX + scaleFactor, startY + scaleFactor);
}


void SIM_OLED_DrawFromBuffer(uint8_t *buf, uint8_t width, uint8_t height) {
    cleardevice();
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            uint8_t byteData = buf[y * width + x];
            for (int i = 0; i < 8; i++) {
                uint8_t bit = GET_BIT(byteData, i);
                if (bit)drawOledPixel(x, y * 8 + i);
            }
        }
    }
}