#pragma once
#include "Base.h"

#include <cru/base/Bitmask.h>

#include <string>

namespace cru::platform::gui {
namespace details {
struct TagMouseButton {};
}  // namespace details

using MouseButton = Bitmask<details::TagMouseButton>;
struct MouseButtons {
  constexpr static MouseButton None = MouseButton::FromOffset(0);
  constexpr static MouseButton Left = MouseButton::FromOffset(1);
  constexpr static MouseButton Middle = MouseButton::FromOffset(2);
  constexpr static MouseButton Right = MouseButton::FromOffset(3);
  constexpr static MouseButton Unknown = MouseButton::FromOffset(4);
};

// Because of the complexity of keyboard layout, I only add code in US keyboard
// layout, the most widely used layout in China. We should try to make it easy
// to add new keyboard layout.
enum class KeyCode {
  Unknown,
  LeftButton,
  MiddleButton,
  RightButton,
  Escape,
  F1,
  F2,
  F3,
  F4,
  F5,
  F6,
  F7,
  F8,
  F9,
  F10,
  F11,
  F12,
  N0,
  N1,
  N2,
  N3,
  N4,
  N5,
  N6,
  N7,
  N8,
  N9,
  A,
  B,
  C,
  D,
  E,
  F,
  G,
  H,
  I,
  J,
  K,
  L,
  M,
  N,
  O,
  P,
  Q,
  R,
  S,
  T,
  U,
  V,
  W,
  X,
  Y,
  Z,
  Grave, // TODO: fix this key mapping on Windows and Xorg.
  Tab,
  CapsLock,
  LeftShift,
  LeftCtrl,
  LeftSuper,
  LeftAlt,
  Minus,
  Equal,
  Backspace,
  LeftSquareBracket,
  RightSquareBracket,
  BackSlash,
  Semicolon,
  Quote,
  Comma,
  Period,
  Slash,
  RightShift,
  RightCtrl,
  RightSuper,
  RightAlt,
  Insert,
  Delete,
  Home,
  End,
  PageUp,
  PageDown,
  Up,
  Left,
  Down,
  Right,
  PrintScreen,
  ScrollLock,
  Pause,
  NumPad0,
  NumPad1,
  NumPad2,
  NumPad3,
  NumPad4,
  NumPad5,
  NumPad6,
  NumPad7,
  NumPad8,
  NumPad9,
  LeftCommand,
  RightCommand,
  Return,
  Space
};

namespace details {
struct TagKeyModifier {};
}  // namespace details

using KeyModifier = Bitmask<details::TagKeyModifier>;

struct KeyModifiers {
  static constexpr KeyModifier None = KeyModifier::FromOffset(0);
  static constexpr KeyModifier Shift = KeyModifier::FromOffset(1);
  static constexpr KeyModifier Ctrl = KeyModifier::FromOffset(2);
  static constexpr KeyModifier Alt = KeyModifier::FromOffset(3);
  static constexpr KeyModifier Command = KeyModifier::FromOffset(4);
};

#ifdef __APPLE__
constexpr KeyModifier kKeyModifierCommand = KeyModifiers::Command;
#else
constexpr KeyModifier kKeyModifierCommand = KeyModifiers::Ctrl;
#endif

CRU_PLATFORM_GUI_API std::string ToString(KeyCode key_code);
CRU_PLATFORM_GUI_API std::string ToString(KeyModifier key_modifier,
                                          std::string_view separator = "+");
}  // namespace cru::platform::gui