/* This is Free Software under GNU Affero General Public License v >= 3.0
 * without warranty, see README.md and license for details.
 *
 * SPDX-License-Identifier: AGPL-3.0-or-later
 * License-Filename: LICENSES/AGPL-3.0.txt
 *
 * Copyright (C) 2018 by via donau
 *   – Österreichische Wasserstraßen-Gesellschaft mbH
 * Software engineering by Intevation GmbH
 *
 * Author(s):
 * Thomas Junk <thomas.junk@intevation.de>
 * Markus Kottländer <markus@intevation.de>
 */

import { HTTP } from "../lib/http";
import { toMillisFromString } from "../lib/session";

const init = () => {
  return {
    isAuthenticated: false,
    expires: null,
    roles: [],
    user: ""
  };
};

export default {
  init,
  namespaced: true,
  state: init(),
  getters: {
    isWaterwayAdmin: state => {
      return state.roles.includes("waterway_admin");
    },
    isSysAdmin: state => {
      return state.roles.includes("sys_admin");
    }
  },
  mutations: {
    authSuccess: (state, data) => {
      const { token, user, expires, roles } = data;
      localStorage.setItem("expires", expires);
      localStorage.setItem("roles", roles);
      localStorage.setItem("token", token);
      localStorage.setItem("user", user);
      state.expires = expires;
      state.roles = roles;
      state.user = user;
      state.authenticated = true;
    },
    clearAuth: () => {
      localStorage.removeItem("expires");
      localStorage.removeItem("roles");
      localStorage.removeItem("token");
      localStorage.removeItem("user");
    },
    setUser: (state, name) => {
      state.user = name;
    },
    setRoles: (state, roles) => {
      state.roles = roles;
    },
    setExpires: (state, expires) => {
      state.expires = expires;
    },
    setIsAuthenticate: state => {
      state.isAuthenticated = true;
    }
  },
  actions: {
    login({ commit }, user) {
      // using POST is a bit more secure than GET
      return new Promise((resolve, reject) => {
        const handleResponse = response => {
          const { expires } = response.data;
          const renew =
            (new Date(toMillisFromString(expires)) - new Date()) * 0.9;
          commit("authSuccess", response.data);
          resolve(response);
          setTimeout(() => {
            HTTP.get("/renew", {
              headers: { "X-Gemma-Auth": localStorage.getItem("token") }
            }).then(handleResponse);
          }, renew);
        };

        HTTP.post("/login", user)
          .then(handleResponse)
          .catch(error => {
            commit("reset", null, { root: true });
            commit("clearAuth");
            reject(error);
          });
      });
    }
  }
};