// Copyright (c) 2023 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#include "Color.hpp"
#include "util/parser/TypeParsers.hpp"

using namespace Dawn;

struct Color Color::fromString(std::string str) {
  // Convert to lowercase
  auto lower = stringToLowercase(str);
  
  if(stringIncludes(lower, "cornflower")) {
    return COLOR_CORNFLOWER_BLUE;

  } else if(stringIncludes(lower, "magenta")) {
    return COLOR_MAGENTA;

  } else if(stringIncludes(lower, "white")) {
    return COLOR_WHITE;

  } else if(stringIncludes(lower, "black")) {
    return COLOR_BLACK;

  } else if(stringIncludes(lower, "red")) {
    return COLOR_RED;

  } else if(stringIncludes(lower, "green")) {
    return COLOR_GREEN;

  } else if(stringIncludes(lower, "blue")) {
    return COLOR_BLUE;
    
  } else if(stringIncludes(lower, "transparent")) {
    return COLOR_TRANSPARENT;
  }

  // Hex code?
  if(lower[0] == '#') {
    // Remove the hash
    lower = lower.substr(1);

    // Convert to RGB
    if(lower.length() == 3) {
      // Convert to 6 digit hex
      lower = lower[0] + lower[0] + lower[1] + lower[1] + lower[2] + lower[2];
    }

    // Convert to RGB
    return {
      (float_t)std::stoi(lower.substr(0, 2), nullptr, 16) / 255.0f,
      (float_t)std::stoi(lower.substr(2, 2), nullptr, 16) / 255.0f,
      (float_t)std::stoi(lower.substr(4, 2), nullptr, 16) / 255.0f,
      1.0f
    };
  }

  // Split by comma 
  auto splitByComma = stringSplit(str, ",");
  if(splitByComma.size() == 3) {
    // RGB
    return {
      (float_t)std::stof(splitByComma[0]),
      (float_t)std::stof(splitByComma[1]),
      (float_t)std::stof(splitByComma[2]),
      1.0f
    };
  } else if(splitByComma.size() == 4) {
    // RGBA
    return {
      (float_t)std::stof(splitByComma[0]),
      (float_t)std::stof(splitByComma[1]),
      (float_t)std::stof(splitByComma[2]),
      (float_t)std::stof(splitByComma[3])
    };
  }

  // TODO: Parse other kinds of colors
  assertUnreachable("Failed to find a color match for " + str);
  return {};
}