import { login, logout } from '@/api/user'
import { getToken, setToken, getKey, setKey, removeToken, getUserInit, setUserInit, removeUserInit, getName, setName, removeName } from '@/utils/auth'
import router, { resetRouter } from '@/router'

const state = {
  token: getToken(),
  keyInfo: getKey(),
  initState: getUserInit(),
  name: getName(),
  avatar: '',
  introduction: '',
  roles: []
}

const mutations = {
  SET_TOKEN: (state, token) => {
    state.token = token
    setToken(token)
  },
  SET_KEY: (state, key) => {
    state.keyInfo = key
    setKey(key)
  },
  SET_INITSTATE: (state, data) => {
    state.initState = data
    setUserInit(data)
  },
  SET_INTRODUCTION: (state, introduction) => {
    state.introduction = introduction
  },
  SET_NAME: (state, name) => {
    state.name = name
    setName(name)
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ username: username.trim(), password: password }).then(response => {
        const { data } = response
        commit('SET_TOKEN', data.token)
        commit('SET_NAME', username)
        if (response.code === 200) {
          resolve()
        } else {
          reject(response)
        }
      }).catch(error => {
        reject(error)
      })
    })
  },

  setUrlToken({ commit }, token) {
    return new Promise((resolve, reject) => {
      commit('SET_TOKEN', token)
      commit('SET_NAME', 'Admin')
      resolve()
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      // getInfo(state.token).then(response => {
      const data = {
        roles: ['admin'],
        introduction: 'I am a super administrator',
        avatar: 'https://wpimg.wallstcn.com/f778738c-e4f8-4870-b634-56703b4acafe.gif',
        name: state.name
      }

      if (!data) {
        reject('Verification failed, please Login again.')
      }

      const { roles, name, avatar, introduction } = data

      // roles must be a non-empty array
      if (!roles || roles.length <= 0) {
        reject('getInfo: roles must be a non-null array!')
      }

      commit('SET_ROLES', roles)
      commit('SET_NAME', name)
      commit('SET_AVATAR', avatar)
      commit('SET_INTRODUCTION', introduction)
      resolve(data)
    })
    // })
  },

  // user logout
  logout({ commit, state, dispatch }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        commit('SET_TOKEN', '')
        commit('SET_ROLES', [])
        removeToken()
        removeName()
        removeUserInit()
        resetRouter()

        // reset visited views and cached views
        // to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
        dispatch('tagsView/delAllViews', null, { root: true })

        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  updateLogOut({ commit, state, dispatch }) {
    return new Promise((resolve, reject) => {
      commit('SET_TOKEN', '')
      removeToken()
      removeName()
      resetRouter()
      dispatch('tagsView/delAllViews', null, { root: true })
      resolve()
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      commit('SET_TOKEN', '')
      commit('SET_ROLES', [])
      removeToken()
      resolve()
    })
  },

  // dynamically modify permissions
  async changeRoles({ commit, dispatch }, role) {
    const token = role + '-token'

    commit('SET_TOKEN', token)
    setToken(token)

    const { roles } = await dispatch('getInfo')

    resetRouter()

    // generate accessible routes map based on roles
    const accessRoutes = await dispatch('permission/generateRoutes', roles, { root: true })
    // dynamically add accessible routes
    router.addRoutes(accessRoutes)

    // reset visited views and cached views
    dispatch('tagsView/delAllViews', null, { root: true })
  }
}

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