import hotkeys, { HotkeysEvent } from 'hotkeys-js';
import { isMac } from '@/functions/platform';
import { MaybePromise } from 'rollup';

export enum HotkeyScope {
  MCAD_MENU = 'mcad_menu',
  PRIMARY = 'primary',
  MEASUREMENT_MENU = 'measurement_menu',
  ANNOTATION_MENU = 'annotation_menu',
  ANNOTATION_TOOLS = 'annotation_tools',
  MEASUREMENT_TOOLS = 'measurement_tools',
  // NAVIGATION_DRAWER = 'navigation_drawer'
}

// Always Windows keys. Mac keys will be generated at runtime.
export enum Hotkeys {
  CTRL_SHIFT_A = 'ctrl+shift+a',
  CTRL_SHIFT_C = 'ctrl+shift+c',
  CTRL_SHIFT_D = 'ctrl+shift+d',
  CTRL_SHIFT_DEL = 'ctrl+shift+del',
  CTRL_SHIFT_E = 'ctrl+shift+e',
  CTRL_SHIFT_F = 'ctrl+shift+f',
  CTRL_SHIFT_G = 'ctrl+shift+g',
  CTRL_SHIFT_H = 'ctrl+shift+h',
  CTRL_SHIFT_L = 'ctrl+shift+l',
  CTRL_SHIFT_M = 'ctrl+shift+m',
  CTRL_SHIFT_P = 'ctrl+shift+p',
  CTRL_SHIFT_Q = 'ctrl+shift+q',
  CTRL_SHIFT_R = 'ctrl+shift+r',
  CTRL_SHIFT_S = 'ctrl+shift+s',
  CTRL_SHIFT_V = 'ctrl+shift+v',
  CTRL_SHIFT_PLUS = 'ctrl+shift++',
  CTRL_SHIFT_MINUS = 'ctrl+shift+-',
  CTRL_SHIFT_SPACE = 'ctrl+shift+space',
  ALT_A = 'alt+a',
  ALT_H = 'alt+h',
  ALT_D = 'alt+d',
  ALT_M = 'alt+m',
  ALT_E = 'alt+e',
  ALT_F = 'alt+f',
}

function generateHotkey(...params: Array<string[]>) {
  return params.map(String).join(',');
}

type HotkeyDefinition = {
  [key in Hotkeys]?: (event: any, handler: any) => MaybePromise<void>;
};

// Vitest not liking us testing defaultfunctions with object modifiers
/* v8 ignore start -- @preserve */
export function defineHotkeys(
  scope: HotkeyScope,
  definition: HotkeyDefinition,
) {
  const keys = transformHotkeysMac(Object.values(Object.keys(definition)));
  hotkeys(
    generateHotkey(keys),
    scope,
    (event: KeyboardEvent, handler: HotkeysEvent) =>
      hotKeyHandler(definition, event, handler),
  );
  hotkeys.setScope(scope);
}
/* v8 ignore stop -- @preserve */

export function defaultHotkeys(definition: HotkeyDefinition) {
  const keys = transformHotkeysMac(Object.values(Object.keys(definition)));
  hotkeys(generateHotkey(keys), (event: KeyboardEvent, handler: HotkeysEvent) =>
    hotKeyHandler(definition, event, handler),
  );
}

function hotKeyHandler(
  definition: HotkeyDefinition,
  event: KeyboardEvent,
  handler: HotkeysEvent,
) {
  event.preventDefault();
  const key = handler.key as Hotkeys;
  const method =
    definition[
      key.replace('command', 'ctrl').replace('option', 'alt') as Hotkeys
    ];
  if (method) {
    method(event, handler);
  }
}
export function resetScope(scope: HotkeyScope) {
  hotkeys.deleteScope(scope);
  hotkeys.setScope(HotkeyScope.PRIMARY);
}

/* v8 ignore start -- @preserve */
function transformHotkeysMac(keys: string[]): string[] {
  if (isMac())
    return keys.map((key) =>
      key.replace('ctrl', 'command').replace('alt', 'option'),
    );
  return keys;
}
/* v8 ignore stop -- @preserve */