'use strict';

const assert = require('assert');
const Service = require('egg').Service;
class RoleBindMenuService extends Service {
  constructor(ctx) {
    super(ctx);
    this.model = this.ctx.model.RoleBindMenu;
  }
  async bind({ roleCode, menuCode }) {
    assert(roleCode, '缺少角色编码');
    assert(menuCode, '缺少菜单编码');
    try {
      const bind = await this.model.findOne({ roleCode, menuCode });
      if (bind) return { errcode: -1001, errmsg: '不能重复绑定', data: '' };
      const res = await this.model.create({ roleCode, menuCode });
      return { errcode: 0, errmsg: '', data: res };
    } catch (error) {
      throw error;
    }
  }
  async unbind({ id }) {
    assert(id, '缺少ID');
    try {
      const bind = await this.model.findOne({ _id: id });
      if (!bind) return { errcode: -1001, errmsg: '数据不存在', data: '' };
      await this.model.deleteOne({ _id: id });
      return { errcode: 0, errmsg: 'ok', data: 'unbind' };
    } catch (error) {
      throw error;
    }
  }
  async queryBind({ skip, limit, roleCode, menuCode }) {
    const filter = {};
    if (menuCode) filter.menuCode = menuCode;
    if (roleCode) filter.roleCode = roleCode;
    try {
      const total = await this.model.find({ ...filter });
      let res;
      if (skip && limit) {
        res = await this.model.find({ ...filter }).skip(skip * limit).limit(limit);
      } else {
        res = await this.model.find({ ...filter });
      }
      return { errcode: 0, errmsg: '', data: res, total: total.length };
    } catch (error) {
      throw error;
    }
  }
  async batchBind({ menuCode, ids = [] }) {
    try {
      const res = await Promise.all(
        ids.filter(async e => {
          const bind = await this.model.findOne({ menuCode, roleCode: e });
          if (!bind) await this.model.create({ menuCode, roleCode: e });
        })
      );
      return { errcode: 0, errmsg: '', data: res };
    } catch (error) {
      throw error;
    }
  }
  async batchUnBind({ menuCode, ids = [] }) {
    try {
      const res = await Promise.all(
        ids.filter(async e => {
          const bind = await this.model.findOne({ menuCode, roleCode: e });
          if (bind) await this.model.deleteOne({ menuCode, roleCode: e });
        })
      );
      return { errcode: 0, errmsg: '', data: res };
    } catch (error) {
      throw error;
    }
  }
}

module.exports = RoleBindMenuService;