#pragma once

#include <stdint.h>

#include "../datatypes.cpp"
#include "../helpers.cpp"
#include "../buffer.cpp"
#include "shader.cpp"

namespace UwU {
  class VGradientShader {
    public:
      VGradientShader(uint16_t y0, Color color0, uint16_t y1, Color color1) {
        this->y0 = y0;
        this->shaderColor0 = color0;
        this->scale = 0xffffffff / (1 + (uint32_t)y1 - (uint32_t)y0);
        this->shaderColor1 = color1;
      }
      uint16_t y0;
      Color shaderColor0;
      uint32_t scale;
      Color shaderColor1;

      Color color(uint16_t u, uint16_t v) {
      (void)u;
      uint32_t t = (((uint32_t)v - (uint32_t)y0) * scale) / 0x01000000;
        // if (v == 42) {
        //   printf("(%u, %u)\n", u, t);
        // }
        return Helpers::lerpColor(shaderColor0, shaderColor1, (uint8_t)t);
      }
  };
}