import { asyncRoutes, constantRoutes } from '@/router'

/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  if (route.meta) {
    if (route.meta.roles) {
      return roles.some(role => route.meta.roles.includes(role))
    } else if (route.meta.pername) {
      return checkuipermission(route.meta.pername)
    }
  }
  return false
}

/**
 * Filter asynchronous routing tables by recursion
 * @param routes asyncRoutes
 * @param roles
 */
export function filterAsyncRoutes(routes, roles) {
  const res = []

  routes.forEach(route => {
    const tmp = { ...route }
    if (hasPermission(roles, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncRoutes(tmp.children, roles)
      }
      res.push(tmp)
    }
  })

  return res
}

const state = {
  routes: [],
  addRoutes: [],
  uipermission: {}
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  }
}

const actions = {
  generateRoutes({ commit }, roles) {
    return new Promise(resolve => {
      // let accessedRoutes
      /* if (roles.includes('admin')) {
        accessedRoutes = asyncRoutes || []
      } else { */
      const accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
      // }
      commit('SET_ROUTES', accessedRoutes)
      resolve(accessedRoutes)
    })
  }
}

export function setuipermission(ui) {
  state.uipermission = JSON.parse(ui)
}

export function checkuipermission(item) {
  for (const key in state.uipermission) {
    if (key === item) {
      return state.uipermission[key]
    }
  }

  for (const key in state.uipermission) {
    if (key === '*') {
      return state.uipermission['*']
    }
  }

  return false
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}