'use strict';

const assert = require('assert');
const _ = require('lodash');
const moment = require('moment');
const { ObjectId } = require('mongoose').Types;
const { CrudService } = require('naf-framework-mongoose/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;

class UserMenuService extends CrudService {
  constructor(ctx) {
    super(ctx, 'usermenu');
    this.model = this.ctx.model.UserMenu;
    this.Rolemodel = this.ctx.model.Role;
    this.Menumodel = this.ctx.model.Menu;
  }

  async create(data) {
    const { userid } = data;
    let res;
    res = await this.model.findOne({ userid });
    if (res) {
      res = await this.model.update({ userid }, data);
    } else {
      res = await this.model.create(data);
    }
    return res;
  }

  async findUserMenu({ userid }) {
    assert(userid, '缺少用户信息');
    const res = await this.model.findOne({ userid });
    return res;
  }

  async getUserMenu({ type, userid }) {
    assert(type, '缺少需要查找角色代码');
    assert(userid, '缺少需要查找用户信息');
    // 找到这个角色的权限,找到用户权限,合并在一起
    // 找到这个角色的所有权限
    const menuids = [];
    const res = await this.Rolemodel.findOne({ type });
    if (!res) { throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到指定角色'); }
    const { menu: roleMenu, params } = res;
    // roleMenu只存id
    menuids.push(...roleMenu);
    // 找到用户的特殊权限
    if (userid !== 'dev') {
      const umidsRes = await this.ctx.service.userMenu.findUserMenu({ userid });
      if (umidsRes) {
        const { menu: uMenuids } = umidsRes;
        // uMenuids只存id
        menuids.push(...uMenuids);
      }
    }
    // 找到所有菜单的父级,下面过滤用,把父级目录拿出来(不单纯是根目录)
    const parentIdsRes = await this.Menumodel.find({ _id: menuids.map(i => ObjectId(i)) }, 'pid');
    let parentIds = parentIdsRes.map(i => i.pid);
    parentIds = _.compact(parentIds);
    menuids.push(...parentIds);
    // 找到该项目的所有的权限
    const allMenu = await this.Menumodel.find({ disabled: false }).sort({ sort: -1 });
    // 需要将根目录整理出来,将
    const dup = allMenu.filter(f => menuids.find(um => ObjectId(um).equals(f._id)));
    const userMenu = await this.ctx.service.menu.toFindChildren(dup);
    return { menu: userMenu, params };
  }
}

module.exports = UserMenuService;