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

const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: '',
    count: {},
    perms: []
  }
};

const state = getDefaultState();

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_PERMS: (state, perms) => {
    state.perms = perms
  },
  SET_COUNT: (state, count) => {
    state.count = count
  }
};

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.access);
        setToken(data.access);
        resolve()
    
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const { data } = response;
        sessionStorage.setItem('userId',data.id);
        if (!data) {
          this.$router.push({name:'login',params:{}});
          reject('验证失败,重新登陆.');
        }

        const { perms, name, avatar } = data;

        // perms must be a non-empty array
        if (!perms || perms.length <= 0) {
          reject('没有任何权限!')
        }
        
        commit('SET_PERMS', perms);
        commit('SET_NAME', name);
        commit('SET_AVATAR', avatar);
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        removeToken();// must remove  token  first
        resetRouter();
        commit('RESET_STATE');
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit },data) {
    return new Promise(resolve => {
      removeToken(); // must remove  token  first
      commit('RESET_STATE');
      commit('SET_TOKEN', data.access);
      setToken(data.access);
      resolve()
    })
  },
  setSize({ commit }, size) {
    commit('SET_SIZE', size)
  },
  getCount({ commit }) {
    return new Promise((resolve, reject) => {
      getCount({}).then((res) => {
        commit('SET_COUNT', res.data);
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  }
}

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