import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router, { resetRouter } from '@/router'

const state = {
  token: getToken(),
  userId: '',
  name: '',
  username: '',
  email: '',
  avatar: '',
  permissions: [],
  department: '',
  mobile: ''
}

const mutations = {
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_USERID(state, userId) {
    state.userId = userId
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_USERNAME: (state, username) => {
    state.username = username
  },
  SET_EMAIL: (state, email) => {
    state.email = email
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_PERMISSIONS: (state, permissions) => {
    state.permissions = permissions
  },
  SET_DEPARTMENT: (state, department) => {
    state.department = department
  },
  SET_MOBILE: (state, mobile) => {
    state.mobile = mobile
  }
}

const actions = {
  // 登录
  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)
        setToken(data.token)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // 获取当前登录用户信息
  getInfo({ commit }) {
    return new Promise((resolve, reject) => {
      getInfo().then(response => {
        const data = response.data
        if (!data) {
          reject('验证失败，请重新登录')
        }
        const { id, username, name, avatar, email, permissions, department, mobile } = data
        commit('SET_USERID', id)
        commit('SET_NAME', name)
        commit('SET_USERNAME', username)
        commit('SET_EMAIL', email)
        commit('SET_AVATAR', avatar)
        commit('SET_PERMISSIONS', permissions)
        commit('SET_DEPARTMENT', department)
        commit('SET_MOBILE', mobile)
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

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

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