import type { MenuProvider, SubMenuProvider } from "../types";

import { getCurrentInstance, inject, provide } from "vue";

import { findComponentUpward } from "../utils";

const menuContextKey = Symbol("menuContext");

/**
 * @zh_CN Provide menu context
 */
function createMenuContext(injectMenuData: MenuProvider) {
  provide(menuContextKey, injectMenuData);
}

/**
 * @zh_CN Provide menu context
 */
function createSubMenuContext(injectSubMenuData: SubMenuProvider) {
  const instance = getCurrentInstance();

  provide(`subMenu:${instance?.uid}`, injectSubMenuData);
}

/**
 * @zh_CN Inject menu context
 */
function useMenuContext() {
  const instance = getCurrentInstance();
  if (!instance) {
    throw new Error("instance is required");
  }
  const rootMenu = inject(menuContextKey) as MenuProvider;
  return rootMenu;
}

/**
 * @zh_CN Inject menu context
 */
function useSubMenuContext() {
  const instance = getCurrentInstance();
  if (!instance) {
    throw new Error("instance is required");
  }
  const parentMenu = findComponentUpward(instance, ["Menu", "SubMenu"]);
  const subMenu = inject(`subMenu:${parentMenu?.uid}`) as SubMenuProvider;
  return subMenu;
}

export { createMenuContext, createSubMenuContext, useMenuContext, useSubMenuContext };