#include "Render/DeviceContext/DeviceContext.h"
#include "UI/Window/UIWindow.h"
#include "UI/Window/WindowBorder.h"

#include <algorithm>

namespace {}

// OFFSET: 0x00A7C060
// FUNCTION: fn_16942
void DrawRoundedBorder(UIWindow& window, int x, int y, int width, int height, std::uint32_t color) {
  window.FillRegion((x + 3), y, (width - 6), 1, color);
  window.FillRegion((x + 3), ((y + height) - 1), (width - 6), 1, color);
  window.FillRegion(x, (y + 3), 1, (height - 6), color);
  window.FillRegion(((x + width) - 1), (y + 3), 1, (height - 6), color);

  window.FillRegion((x + 1), (y + 1), 2, 1, color);
  window.FillRegion((x + 1), ((y + height) - 2), 2, 1, color);
  window.FillRegion(((x + width) - 3), (y + 1), 2, 1, color);
  window.FillRegion(((x + width) - 3), ((y + height) - 2), 2, 1, color);

  window.FillRegion((x + 1), (y + 2), 1, 1, color);
  window.FillRegion((x + 1), ((y + height) - 3), 1, 1, color);
  window.FillRegion(((x + width) - 2), (y + 2), 1, 1, color);
  window.FillRegion(((x + width) - 2), ((y + height) - 3), 1, 1, color);
}

// OFFSET: 0x00A7BC30
// FUNCTION: fn_16937
void DrawRectangleBorder(UIWindow& window, int x, int y, int width, int height, std::uint32_t color) {
  const int left = std::max(x, 0);
  const int top = std::max(y, 0);
  const int right = (x + width);
  const int bottom = (y + height);
  RECT rectangle{left, top, std::min(window.geometry.width, right), std::min(window.geometry.height, (y + 1))};
  window.geometry.surface->Fill(&rectangle, color);

  rectangle = {left, top, std::min(window.geometry.width, (x + 1)), std::min(window.geometry.height, bottom)};
  window.geometry.surface->Fill(&rectangle, color);

  rectangle = {std::max((right - 1), 0), top, std::min(window.geometry.width, right), std::min(window.geometry.height, bottom)};
  window.geometry.surface->Fill(&rectangle, color);

  rectangle = {left, std::max((bottom - 1), 0), std::min(window.geometry.width, right), std::min(window.geometry.height, bottom)};
  window.geometry.surface->Fill(&rectangle, color);
}

// OFFSET: 0x00A7C3E0
// FUNCTION: fn_16943
void DrawFilledRoundedBorder(UIWindow& window, int x, int y, int width, int height, std::uint32_t color) {
  const RECT rectangle{
    std::max((x + 1), 0), std::max((y + 1), 0), std::min(window.geometry.width, ((x + 1) + (width - 2))),
    std::min(window.geometry.height, ((y + 1) + (height - 2)))
  };
  window.geometry.surface->Fill(&rectangle, color);
  DrawRoundedBorder(window, x, y, width, height, color);
}

// OFFSET: 0x00A7C4E0
// FUNCTION: fn_16946
void FillTriangle(UIWindow& window, int x0, int y0, int x1, int y1, int x2, int y2, std::uint32_t color) {
  HDC dc;
  POINT points[3] = {{x0, y0}, {x1, y1}, {x2, y2}};
  if (window.geometry.surface->GetDC(&dc)) {
    HRGN region = CreatePolygonRgn(points, 3, WINDING);
    HBRUSH brush = CreateSolidBrush(color);
    FillRgn(dc, region, brush);
    DeleteObject(region);
    DeleteObject(brush);
    window.geometry.surface->ReleaseDC(dc);
  }
}