<template>
  <div class="main d-flex flex-row">
    <Spacer></Spacer>
    <div class="d-flex content flex-column">
      <div class="d-flex flex-row">
        <div :class="userlistStyle">
          <div class="card">
            <h6
              class="mb-0 py-2 px-3 border-bottom d-flex text-info align-items-center"
            >
              <font-awesome-icon
                icon="users-cog"
                class="mr-2 fa-fw"
              ></font-awesome-icon>
              <translate class="headline">Users</translate>
            </h6>
            <div class="card-body">
              <table id="datatable" :class="tableStyle">
                <thead>
                  <tr>
                    <th scope="col" @click="sortBy('user')">
                      <span
                        >Username&nbsp;
                        <font-awesome-icon
                          v-if="sortCriterion == 'user'"
                          icon="angle-down"
                        ></font-awesome-icon>
                      </span>
                    </th>
                    <th scope="col" @click="sortBy('country')">
                      <span
                        >Country&nbsp;
                        <font-awesome-icon
                          v-if="sortCriterion == 'country'"
                          icon="angle-down"
                        ></font-awesome-icon>
                      </span>
                    </th>
                    <th scope="col" @click="sortBy('email')">
                      <span
                        >Email&nbsp;
                        <font-awesome-icon
                          v-if="sortCriterion == 'email'"
                          icon="angle-down"
                        ></font-awesome-icon>
                      </span>
                    </th>
                    <th scope="col" @click="sortBy('role')">
                      <span
                        >Role&nbsp;
                        <font-awesome-icon
                          v-if="sortCriterion == 'role'"
                          icon="angle-down"
                        ></font-awesome-icon>
                      </span>
                    </th>
                    <th scope="col"></th>
                  </tr>
                </thead>
                <tbody>
                  <tr
                    v-for="user in users"
                    :key="user.user"
                    @click="selectUser(user.user)"
                  >
                    <td>{{ user.user }}</td>
                    <td>{{ user.country }}</td>
                    <td>{{ user.email }}</td>
                    <td>
                      <font-awesome-icon
                        :icon="roleIcon(user.role)"
                        @click="deleteUser(user.user)"
                      ></font-awesome-icon>
                    </td>
                    <td>
                      <font-awesome-icon
                        icon="trash"
                        @click="deleteUser(user.user)"
                      ></font-awesome-icon>
                    </td>
                  </tr>
                </tbody>
              </table>
            </div>
            <div class="d-flex mx-auto align-items-center">
              <button
                @click="prevPage"
                v-if="this.currentPage !== 1"
                class="mr-2 btn btn-sm btn-light align-self-center"
              >
                <font-awesome-icon icon="angle-left"></font-awesome-icon>
              </button>
              {{ this.currentPage }} / {{ this.pages }}
              <button
                @click="nextPage"
                v-if="this.currentPage !== this.pages"
                class="ml-2 btn btn-sm btn-light align-self-center"
              >
                <font-awesome-icon icon="angle-right"></font-awesome-icon>
              </button>
            </div>
            <div class="mr-3 pb-3">
              <button @click="addUser" class="btn btn-info addbutton shadow-sm">
                <translate>Add User</translate>
              </button>
            </div>
          </div>
        </div>
        <Userdetail
          class="d-flex userdetails"
          v-if="isUserDetailsVisible"
        ></Userdetail>
      </div>
    </div>
  </div>
</template>

<style scoped lang="scss">
@import "../../assets/tooltip.scss";

.addbutton {
  position: absolute;
  bottom: $offset;
  right: $offset;
}

.content {
  width: 100%;
}

.userdetails {
  width: 50%;
}

.main {
  height: 100vh;
}

.icon {
  font-size: large;
}

.userlist {
  min-width: 520px;
  height: 100%;
}

.userlistsmall {
  width: 100%;
}

.userlistextended {
  width: 100%;
}

.table {
  width: 90% !important;
  margin: auto;
}

.table th {
  cursor: pointer;
}

.table th,
td {
  font-size: $smaller;
  border-top: 0px !important;
  text-align: left;
  padding: $small-offset !important;
}

.table td {
  font-size: $smaller;
  cursor: pointer;
}

tr span {
  display: flex;
}
</style>

<script>
/* 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>
 */
import Userdetail from "./Userdetail";
import store from "../../store";
import { mapGetters, mapState } from "vuex";
import { displayError } from "../../lib/errors.js";
import Spacer from "../Spacer";

export default {
  name: "userview",
  data() {
    return {
      sortCriterion: "user",
      pageSize: 20,
      currentPage: 1
    };
  },
  components: {
    Userdetail,
    Spacer
  },
  computed: {
    ...mapGetters("usermanagement", ["isUserDetailsVisible"]),
    ...mapState("application", ["showSidebar"]),
    users() {
      let users = [...this.$store.getters["usermanagement/users"]];
      users.sort((a, b) => {
        if (
          a[this.sortCriterion].toLowerCase() <
          b[this.sortCriterion].toLowerCase()
        )
          return -1;
        if (
          a[this.sortCriterion].toLowerCase() >
          b[this.sortCriterion].toLowerCase()
        )
          return 1;
        return 0;
      });
      const start = (this.currentPage - 1) * this.pageSize;
      return users.slice(start, start + this.pageSize);
    },
    pages() {
      let users = [...this.$store.getters["usermanagement/users"]];
      return Math.ceil(users.length / this.pageSize);
    },
    tableStyle() {
      return {
        table: true,
        "table-hover": true,
        "table-sm": this.isUserDetailsVisible,
        fadeIn: true,
        animated: true
      };
    },
    userlistStyle() {
      return [
        "userlist mt-3 mr-3 shadow-xs",
        {
          userlistsmall: this.isUserDetailsVisible,
          userlistextended: !this.isUserDetailsVisible
        }
      ];
    }
  },
  methods: {
    tween() {},
    nextPage() {
      if (this.currentPage < this.pages) {
        document.querySelector("#datatable").classList.add("fadeOut");
        setTimeout(() => {
          document.querySelector("#datatable").classList.remove("fadeOut");
          this.currentPage += 1;
        }, 10);
      }
      return;
    },
    prevPage() {
      if (this.currentPage > 0) {
        document.querySelector("#datatable").classList.add("fadeOut");
        setTimeout(() => {
          document.querySelector("#datatable").classList.remove("fadeOut");
          this.currentPage -= 1;
        }, 10);
      }
      return;
    },
    sortBy(criterion) {
      this.sortCriterion = criterion;
    },
    deleteUser(name) {
      this.$store
        .dispatch("usermanagement/deleteUser", { name: name })
        .then(() => {
          this.submitted = false;
          this.$store.dispatch("usermanagement/loadUsers").catch(error => {
            const { status, data } = error.response;
            displayError({
              title: this.$gettext("Backend Error"),
              message: `${status}: ${data.message || data}`
            });
          });
        })
        .catch(error => {
          const { status, data } = error.response;
          displayError({
            title: this.$gettext("Backend Error"),
            message: `${status}: ${data.message || data}`
          });
        });
    },
    addUser() {
      this.$store.commit("usermanagement/clearCurrentUser");
      this.$store.commit("usermanagement/setUserDetailsVisible");
    },
    selectUser(name) {
      const user = this.$store.getters["usermanagement/getUserByName"](name);
      this.$store.commit("usermanagement/setCurrentUser", user);
    },
    roleIcon(role) {
      if (role === "sys_admin") return "star";
      if (role === "waterway_admin") return ["fab", "adn"];
      return "user";
    }
  },
  beforeRouteEnter(to, from, next) {
    store
      .dispatch("usermanagement/loadUsers")
      .then(next)
      .catch(error => {
        const { status, data } = error.response;
        displayError({
          title: this.$gettext("Backend Error"),
          message: `${status}: ${data}`
        });
      });
  },
  beforeRouteLeave(to, from, next) {
    store.commit("usermanagement/clearCurrentUser");
    store.commit("usermanagement/setUserDetailsInvisible");
    next();
  }
};
</script>