<template>
  <div class="main d-flex flex-column">
    <div class="d-flex content flex-column">
      <div class="d-flex flex-row">
        <div :class="userlistStyle">
          <div class="card">
            <div class="card-header shadow-sm text-white bg-info mb-3">
              Users
            </div>
            <div class="card-body">
              <table id="datatable" :class="tableStyle">
                <thead>
                  <tr>
                    <th scope="col" @click="sortBy('user')">
                      <span>Username&nbsp;
                        <i v-if="sortCriterion=='user'" class="fa fa-angle-down"></i>
                      </span>
                    </th>
                    <th scope="col" @click="sortBy('country')">
                      <span>Country&nbsp;
                        <i v-if="sortCriterion=='country'" class="fa fa-angle-down"></i>
                      </span>
                    </th>
                    <th scope="col" @click="sortBy('email')">
                      <span>Email&nbsp;
                        <i v-if="sortCriterion=='email'" class="fa fa-angle-down"></i>
                      </span>
                    </th>
                    <th scope="col" @click="sortBy('role')">
                      <span>Role&nbsp;
                        <i v-if="sortCriterion=='role'" class="fa fa-angle-down"></i>
                      </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>
                      <i v-tooltip="user.roleLabel" :class="{
                        fa:true,
                        icon:true, 
                        'fa-user':user.role==='waterway_user',
                        'fa-star':user.role=='sys_admin',
                        'fa-adn':user.role==='waterway_admin'}"></i>
                    </td>
                    <td>
                      <i @click="deleteUser(user.user)" class="icon fa fa-trash-o"></i>
                    </td>
                  </tr>
                </tbody>
              </table>
            </div>
            <div class="d-flex flex-row pagination">
              <i @click=" prevPage " v-if="this.currentPage!=1 " class="backwards btn btn-sm btn-light align-self-center pages fa fa-caret-left "></i> {{this.currentPage}} / {{this.pages}}
              <i @click="nextPage " class="forwards btn btn-sm btn-light align-self-center pages fa fa-caret-right "></i>
            </div>
            <div class="adduser ">
              <button @click="addUser " class="btn btn-info pull-right shadow-sm ">Add User</button>
            </div>
          </div>
        </div>
        <Userdetail v-if="isUserDetailsVisible "></Userdetail>
      </div>
    </div>
  </div>
</template>

<style lang="scss">
@import "../assets/application.scss";
@import "../assets/tooltip.scss";
.main {
  height: 100vh;
}

.backwards {
  margin-right: 0.5rem;
}

.forwards {
  margin-left: 0.5rem;
}

.content {
  margin-top: $large-offset;
  margin-left: auto;
  margin-right: auto;
}

.adduser {
  margin-right: $offset;
  padding-bottom: $offset;
}

.icon {
  font-size: large;
}

.userlist {
  margin-top: $topbarheight;
  margin-right: $offset;
  min-width: 520px;
  height: 100%;
}

.pagination {
  margin-left: auto;
  margin-right: auto;
}
.userlistsmall {
  width: 30vw;
}

.userlistextended {
  width: 70vw;
}

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

.table th,
.pages {
  cursor: pointer;
}

.table th,
td {
  font-size: 0.9rem;
  border-top: 0px !important;
  text-align: left;
  padding: 0.5rem !important;
}

.table td {
  font-size: 0.9rem;
  cursor: pointer;
}

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

<script>
import Userdetail from "../components/Userdetail";
import store from "../store";
import { mapGetters } from "vuex";
import { displayError } from "../lib/errors.js";

export default {
  name: "userview",
  data() {
    return {
      sortCriterion: "user",
      pageSize: 10,
      currentPage: 1
    };
  },
  components: {
    Userdetail
  },
  computed: {
    ...mapGetters("usermanagement", ["isUserDetailsVisible"]),
    ...mapGetters("application", ["sidebarCollapsed"]),
    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: true,
        shadow: true,
        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: "Backend Error",
              message: `${status}: ${data.message || data}`
            });
          });
        })
        .catch(error => {
          const { status, data } = error.response;
          displayError({
            title: "Backend Error",
            message: `${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.$store.commit("usermanagement/setCurrentUser", user);
    }
  },
  beforeRouteEnter(to, from, next) {
    store
      .dispatch("usermanagement/loadUsers")
      .then(next)
      .catch(error => {
        const { status, data } = error.response;
        displayError({
          title: "Backend Error",
          message: `${status}: ${data}`
        });
      });
  },
  beforeRouteLeave(to, from, next) {
    store.commit("usermanagement/clearCurrentUser");
    store.commit("usermanagement/setUserDetailsInvisible");
    next();
  }
};
</script>