<template>
  <b-container fluid>
    <page-title />
    <b-row>
      <b-col xl="9" class="text-right">
        <b-button variant="link" @click="initModalSettings">
          Account policy settings
          <icon-settings />
        </b-button>
        <b-button variant="primary" @click="initModalUser(null)">
          Add user
          <icon-add />
        </b-button>
      </b-col>
    </b-row>
    <b-row>
      <b-col xl="9">
        <table-toolbar
          ref="toolbar"
          :selected-items-count="selectedRows.length"
          :actions="tableToolbarActions"
          @clearSelected="clearSelectedRows($refs.table)"
          @batchAction="onBatchAction"
        />
        <b-table
          ref="table"
          selectable
          no-select-on-click
          :fields="fields"
          :items="tableItems"
          @row-selected="onRowSelected($event, tableItems.length)"
        >
          <!-- Checkbox column -->
          <template v-slot:head(checkbox)>
            <b-form-checkbox
              v-model="tableHeaderCheckboxModel"
              :indeterminate="tableHeaderCheckboxIndeterminate"
              @change="onChangeHeaderCheckbox($refs.table)"
            />
          </template>
          <template v-slot:cell(checkbox)="row">
            <b-form-checkbox
              v-model="row.rowSelected"
              @change="toggleSelectRow($refs.table, row.index)"
            />
          </template>

          <!-- table actions column -->
          <template v-slot:cell(actions)="data">
            <b-button
              aria-label="Edit user"
              title="Edit user"
              variant="link"
              :disabled="!data.value.edit"
              @click="initModalUser(data.item)"
            >
              <icon-edit />
            </b-button>
            <b-button
              aria-label="Delete user"
              title="Delete user"
              variant="link"
              :disabled="!data.value.delete"
              @click="initModalDelete(data.item)"
            >
              <icon-trashcan />
            </b-button>
          </template>
        </b-table>
      </b-col>
    </b-row>
    <b-row>
      <b-col xl="8">
        <b-button v-b-toggle.collapse-role-table variant="link" class="mt-3">
          View privilege role descriptions
          <icon-chevron />
        </b-button>
        <b-collapse id="collapse-role-table" class="mt-3">
          <table-roles />
        </b-collapse>
      </b-col>
    </b-row>
    <!-- Modals -->
    <modal-settings :settings="settings"></modal-settings>
    <modal-user :user="activeUser" @ok="saveUser"></modal-user>
  </b-container>
</template>

<script>
import IconTrashcan from '@carbon/icons-vue/es/trash-can/20';
import IconEdit from '@carbon/icons-vue/es/edit/20';
import IconAdd from '@carbon/icons-vue/es/add--alt/20';
import IconSettings from '@carbon/icons-vue/es/settings/20';
import IconChevron from '@carbon/icons-vue/es/chevron--up/20';

import ModalUser from './ModalUser';
import ModalSettings from './ModalSettings';
import PageTitle from '../../../components/Global/PageTitle';
import TableRoles from './TableRoles';
import TableToolbar from '../../../components/Global/TableToolbar';

import BVTableSelectableMixin from '../../../components/Mixins/BVTableSelectableMixin';
import BVToastMixin from '../../../components/Mixins/BVToastMixin';

export default {
  name: 'LocalUsers',
  components: {
    IconAdd,
    IconChevron,
    IconEdit,
    IconSettings,
    IconTrashcan,
    ModalSettings,
    ModalUser,
    PageTitle,
    TableRoles,
    TableToolbar
  },
  mixins: [BVTableSelectableMixin, BVToastMixin],
  data() {
    return {
      activeUser: null,
      settings: null,
      fields: [
        {
          key: 'checkbox',
          label: '',
          tdClass: 'table-cell__checkbox'
        },
        'checkbox',
        'username',
        'privilege',
        'status',
        {
          key: 'actions',
          label: '',
          tdClass: 'table-cell__actions'
        }
      ],
      tableToolbarActions: [
        {
          value: 'delete',
          labelKey: 'localUserManagement.tableActions.delete'
        },
        {
          value: 'enable',
          labelKey: 'localUserManagement.tableActions.enable'
        },
        {
          value: 'disable',
          labelKey: 'localUserManagement.tableActions.disable'
        }
      ]
    };
  },
  computed: {
    allUsers() {
      return this.$store.getters['localUsers/allUsers'];
    },
    tableItems() {
      // transform user data to table data
      return this.allUsers.map(user => {
        return {
          username: user.UserName,
          privilege: user.RoleId,
          status: user.Locked
            ? 'Locked'
            : user.Enabled
            ? 'Enabled'
            : 'Disabled',
          actions: {
            edit: true,
            delete: user.UserName === 'root' ? false : true
          },
          ...user
        };
      });
    }
  },
  created() {
    this.getUsers();
  },
  methods: {
    getUsers() {
      this.$store.dispatch('localUsers/getUsers');
    },
    initModalUser(user) {
      this.activeUser = user;
      this.$bvModal.show('modal-user');
    },
    initModalDelete(user) {
      this.$bvModal
        .msgBoxConfirm(
          `Are you sure you want to delete user '${user.username}'? This action cannot be undone.`,
          {
            title: 'Delete user',
            okTitle: 'Delete user'
          }
        )
        .then(deleteConfirmed => {
          if (deleteConfirmed) {
            this.deleteUser(user);
          }
        });
    },
    initModalSettings() {
      if (this.settings) {
        this.$bvModal.show('modal-settings');
      } else {
        // fetch settings then show modal
      }
    },
    saveUser({ isNewUser, userData }) {
      if (isNewUser) {
        this.$store
          .dispatch('localUsers/createUser', userData)
          .then(success => this.successToast(success))
          .catch(({ message }) => this.errorToast(message));
      } else {
        this.$store
          .dispatch('localUsers/updateUser', userData)
          .then(success => this.successToast(success))
          .catch(({ message }) => this.errorToast(message));
      }
    },
    deleteUser({ username }) {
      this.$store
        .dispatch('localUsers/deleteUser', username)
        .then(success => this.successToast(success))
        .catch(({ message }) => this.errorToast(message));
    },
    onBatchAction(action) {
      switch (action) {
        case 'delete':
          this.$store
            .dispatch('localUsers/deleteUsers', this.selectedRows)
            .then(messages => {
              messages.forEach(({ type, message }) => {
                if (type === 'success') this.successToast(message);
                if (type === 'error') this.errorToast(message);
              });
            });
          break;
        case 'enable':
          this.$store
            .dispatch('localUsers/enableUsers', this.selectedRows)
            .then(messages => {
              messages.forEach(({ type, message }) => {
                if (type === 'success') this.successToast(message);
                if (type === 'error') this.errorToast(message);
              });
            });
          break;
        case 'disable':
          this.$store
            .dispatch('localUsers/disableUsers', this.selectedRows)
            .then(messages => {
              messages.forEach(({ type, message }) => {
                if (type === 'success') this.successToast(message);
                if (type === 'error') this.errorToast(message);
              });
            });
          break;
        default:
          break;
      }
    }
  }
};
</script>

<style lang="scss" scoped>
.btn.collapsed {
  svg {
    transform: rotate(180deg);
  }
}
</style>