import getAuth from '../../../scripts/axios-auth';

let timer;

export default {
  async login(context, payload) {
    return context.dispatch('auth', {
      ...payload,
      mode: 'login'
    });
  },
  async signup(context, payload) {
    return context.dispatch('auth', {
      ...payload,
      mode: 'signup'
    });
  },
  async auth(context, payload) {
    const mode = payload.mode;
    let url = 'accounts:signInWithPassword';
    if (mode === 'signup') {
      url = 'accounts:signUp';
    }
    try {
      const response = await getAuth.post(url, {
        email: payload.email,
        password: payload.password,
        returnSecureToken: true
      });
      const responseData = response.data;

      const expiresIn = +responseData.expiresIn * 1000;
      const expirationDate = new Date().getTime() + expiresIn;

      localStorage.setItem('token', responseData.idToken);
      localStorage.setItem('userId', responseData.localId);
      localStorage.setItem('tokenExpiration', expirationDate);

      timer = setTimeout(function() {
        context.dispatch('autoLogout');
      }, expiresIn);

      context.commit('setUser', {
        token: responseData.idToken,
        userId: responseData.localId
      });
    } catch (err) {
      const error = new Error(err.message);
      throw error;
    }
  },
  tryLogin(context) {
    const token = localStorage.getItem('token');
    const userId = localStorage.getItem('userId');
    const tokenExpiration = localStorage.getItem('tokenExpiration');

    const expiresIn = +tokenExpiration - new Date().getTime();

    if (expiresIn < 0) {
      return;
    }

    setTimeout(function() {
      context.dispatch('autoLogout');
    }, expiresIn);

    if (token && userId) {
      context.commit('setUser', {
        token: token,
        userId: userId
      });
    }
  },
  logout(context) {
    localStorage.removeItem('token');
    localStorage.removeItem('userId');
    localStorage.removeItem('tokenExpiration');

    clearTimeout(timer);

    context.commit('setUser', {
      token: null,
      userId: null
    });
  },
  autoLogout(context) {
    context.dispatch('logout');
    context.commit('setAutoLogout');
  }
};