EmissionManager.vue

<template>
    <b-container>
        <template v-if="selectedShow">
            <auth-wall>
                <show-selector
                    ref="showSelector"
                    :title="$t('navigation.calendar')"
                    :calendar="true"
                    :callback="showHasSwitched"
                    @set-view="changeView"
                />
                <hr>

                <b-alert
                    :variant="conflictCount > 0 ? 'danger' : 'success'"
                    :show="conflictMode"
                >
                    <div
                        v-if="conflictMode"
                    >
                        <h4>{{ $t('conflictResolution.title') }}</h4>
                        <p
                            :class="{
                                'tw-mb-4': resolveData.schedule.rrule === 1,
                                'tw-mb-0': resolveData.schedule.rrule !== 1
                            }"

                            v-html="$t('conflictResolution.newSchedule', {
                                firstDate: prettyDate(resolveData.schedule.first_date),
                                startTime: resolveData.schedule.start_time,
                                endTime: resolveData.schedule.end_time,
                            })"
                        />

                        <p
                            v-if="resolveData.schedule.rrule !== 1"
                            v-html="$t('conflictResolution.recurringSchedule', {
                                rrule: rruleRender(resolveData.schedule.rrule),
                                lastDate: prettyDate(resolveData.schedule.last_date)
                            })"
                        />

                        <div v-if="submitting">
                            <b-row>
                                <b-col align="center">
                                    <img
                                        src="/assets/radio.gif"
                                        :alt="$t('loading')"
                                    >
                                </b-col>
                            </b-row>
                        </div>
                        <div v-else>
                            <div v-if="conflictCount > 0">
                                <p>{{ $t('conflictResolution.leftToResolve', {smart_count: conflictCount}) }}</p>

                                <b-button
                                    variant="danger"
                                    size="sm"
                                    @click="resolveCancel"
                                >
                                    {{ $t('cancel') }}
                                </b-button>
                            </div>
                            <div v-else>
                                <p>{{ $t('conflictResolution.noneLeftToResolve') }}</p>
                                <b-button
                                    variant="success"
                                    @click="resolveSubmit"
                                >
                                    {{ $t('conflictResolution.applySolution') }}
                                </b-button>
                &nbsp;
                                <b-button
                                    variant="danger"
                                    @click="resolveCancel"
                                >
                                    {{ $t('cancel') }}
                                </b-button>
                            </div>
                        </div>
                    </div>
                </b-alert>

                <server-errors :errors="serverErrors" />

                <div class="tw-flex">
                    <div :class="{ 'tw-hidden': view !== 'week'}">
                        <full-calendar
                            ref="calendar"
                            default-view="agendaWeek"
                            :events="calendarSlots"
                            :config="calendarConfig"
                            @view-render="renderView"
                            @event-selected="eventSelected"
                            @event-drop="eventDrop"
                            @event-resize="eventResize"
                            @event-created="eventCreated"
                        />
                    </div>

                    <div
                        :class="{
                            'schedule-panel tw-w-full': true,
                            'tw-hidden': view !== 'day'
                        }"
                    >
                        <div class="tw-flex tw-items-center tw-justify-between tw-mb-4">
                            <h3>{{ prettyDate(selectedDay) }}</h3>

                            <b-button-group>
                                <b-button
                                    type="info"
                                    @click="changeDay(-1)"
                                >
                                    <svg
                                        class="tw-w-4 tw-h-4"
                                        fill="none"
                                        stroke="currentColor"
                                        viewBox="0 0 24 24"
                                        xmlns="http://www.w3.org/2000/svg"
                                    ><path
                                        stroke-linecap="round"
                                        stroke-linejoin="round"
                                        stroke-width="2"
                                        d="M15 19l-7-7 7-7"
                                    /></svg>
                                </b-button>

                                <b-button
                                    type="info"
                                    @click="changeDay(1)"
                                >
                                    <svg
                                        class="tw-w-4 tw-h-4"
                                        fill="none"
                                        stroke="currentColor"
                                        viewBox="0 0 24 24"
                                        xmlns="http://www.w3.org/2000/svg"
                                    >
                                        <path
                                            stroke-linecap="round"
                                            stroke-linejoin="round"
                                            stroke-width="2"
                                            d="M9 5l7 7-7 7"
                                        />
                                    </svg>
                                </b-button>
                            </b-button-group>
                        </div>

                        <div
                            v-for="timeslot in timeslotsForDay"
                            :key="timeslot.id"
                            :class="{
                                'timeslot tw-w-full tw-py-2 tw-px-3 tw-rounded hover:tw-bg-gray-200 hover:tw-text-gray-900 tw-cursor-pointer tw-border tw-border-solid tw-border-gray-200 tw-mb-2': true,
                                'tw-bg-gray-900 tw-text-white': new Date() >= new Date(timeslot.start) && new Date() <= new Date(timeslot.end),
                                'tw-bg-gray-200 tw-text-gray-600 tw-opacity-75': new Date() >= new Date(timeslot.end),
                            }"
                            @click="() => timeslotClicked(timeslot)"
                        >
                            <div class="tw-flex tw-justify-between tw-items-center">
                                <div>
                                    <p class="tw-mb-0 tw-leading-tight tw-font-bold">
                                        {{ timeslot.show.name }}
                                    </p>
                                    <span class="tw-text-sm">
                                        {{ prettyTime(timeslot.start) }} - {{ prettyTime(timeslot.end) }}
                                        <span
                                            v-if="timeslot.is_repetition"
                                            class="tw-text-gray-400"
                                        >{{ $t('calendar.repetition') }}</span>
                                    </span>
                                </div>

                                <div v-if="loaded.playlists">
                                    <div v-if="!timeslot.playlist_id">
                                        <span
                                            v-if="timeslot.show.default_playlist_id"
                                            class="tw-leading-none"
                                        >
                                            <span class="tw-block"><strong>{{ $t('emissionTable.playlist') }}:</strong> {{ getPlaylistById(timeslot.show.default_playlist_id).description || timeslot.show.default_playlist_id }}</span>
                                            <span class="tw-text-xs tw-text-red-500">{{ $t('calendar.fallback') }}</span>
                                        </span>
                                        <span v-else>
                                            {{ $t('calendar.empty') }}
                                        </span>
                                    </div>
                                    <div
                                        v-else
                                        class="tw-leading-none"
                                    >
                                        <span class="tw-block"><strong>{{ $t('emissionTable.playlist') }}:</strong> {{ timeslot.playlist.description || timeslot.playlist_id }}</span>
                                        <span class="tw-text-sm">
                                            <strong>{{ $t('emissionTable.duration') }}:</strong> {{ playlistDuration(timeslot.playlist) }}
                                            <span
                                                v-if="isMismatchedLength(timeslot.playlist, timeslot)"
                                                class="is-mismatched"
                                            >
                                                {{ $t('calendar.mismatchedLength') }}
                                            </span>
                                        </span>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </auth-wall>

            <app-modalEmissionManagerCreate
                ref="appModalEmissionManagerCreate"
            />
            <app-modalEmissionManagerResolve
                ref="appModalEmissionManagerResolve"
            />
            <app-modalEmissionManagerEdit
                ref="appModalEmissionManagerEdit"
            />
        </template>

        <div
            v-else-if="loaded.shows && !selectedShow"
            class="tw-text-center"
            v-html="$t('noAssignedShows', { adminUrl })"
        />
    </b-container>
</template>

<script>
import {mapGetters} from 'vuex'

// We need the fullcalendar import because it has side-effects without which
// Vite would throw an error when loading the FullCalendar vue component.
import 'fullcalendar'
import {FullCalendar} from 'vue-full-calendar'
import 'fullcalendar/dist/fullcalendar.css'

import showSelector from '@/components/ShowSelector.vue'
import modalEmissionManagerCreate from '@/components/emissions/ModalCreate.vue'
import modalEmissionManagerResolve from '@/components/emissions/ModalResolve.vue'
import modalEmissionManagerEdit from '@/components/emissions/ModalEdit.vue'
import AuthWall from '@/components/AuthWall.vue'
import rrules from '@/mixins/rrules'
import prettyDate from '@/mixins/prettyDate'
import playlist from '@/mixins/playlist'
import ServerErrors from '@/components/ServerErrors.vue'
import {getISODateString} from '@/util'

export default {
  components: {
    ServerErrors,
    FullCalendar,
    AuthWall,
    'show-selector': showSelector,
    'app-modalEmissionManagerCreate': modalEmissionManagerCreate,
    'app-modalEmissionManagerResolve': modalEmissionManagerResolve,
    'app-modalEmissionManagerEdit': modalEmissionManagerEdit,
  },

  mixins: [rrules, prettyDate, playlist],

  data() {
    return {
      view: 'week',
      adminUrl: `${import.meta.env.VUE_APP_BASEURI_STEERING}/admin`,
      calendarSlots: [],
      selectedDay: new Date(),

      // flag for when submitting resolve data
      submitting: false,

      // this flag signifies if we are in conflict resolution mode
      conflictMode: false,

      // when conflict mode is activated, this should hold the steering response
      // from schedule creation, with all the conflicts and solutions
      resolveData: null,
      conflictCount: 0,
      conflictSolutions: [],
      serverErrors: [],
    }
  },

  computed: {

    ...mapGetters({
      getShow: 'shows/getShowByDataParam'
    }),

    loaded() {
      return {
        shows: this.$store.state.shows.loaded['shows'],
        timeslots: this.$store.state.shows.loaded['timeslots'],
        playlists: this.$store.state.playlists.loaded['playlists']
      }
    },

    timeslotsForDay() {
      return this.timeslots
          .filter(timeslot => {
            const dateFormat = new Intl.DateTimeFormat('en', {year: 'numeric', month: '2-digit', day: '2-digit'})
            return dateFormat.format(new Date(timeslot.start)) === dateFormat.format(this.selectedDay)
          })
          .map(timeslot => {
            const id = timeslot.show
            const show = this.getShow({id})

            return {
              ...timeslot,
              playlist: timeslot.playlist_id ? this.getPlaylistById(timeslot.playlist_id) : null,
              show: {
                ...show
              }
            }
          })
    },

    // this is the whole configuration for our schedule calendar, including
    // simple event handlers that do not need the whole components scope
    calendarConfig() {
      const selectDay = this.selectDay.bind(this)

      return {
        locale: this.$activeLocale(),
        height: 600,
        firstDay: 1,
        navLinks: true,

        buttonText: {
          today: this.$t('calendar.today')
        },

        header: {
          left: 'title',
          center: '',
          right: 'today prev,next'
        },

        views: {
          agendaWeek: {
            columnHeaderFormat: 'ddd D.M.',
            timeFormat: 'k:mm',
            slotLabelFormat: 'k:mm',
            allDaySlot: false,
            editable: false,
          },
        },
        // here we add a simple tooltip to every event, so that the full title
        // of a show can be viewed
        eventRender: function (event, element) {
          element.attr('title', event.title)
        },

        navLinkDayClick(selectedDate) {
          selectDay(selectedDate.toDate())
          document.querySelectorAll('.fc-day-header[data-date]').forEach(el => el.classList.remove('fc-day-selected'))
          document.querySelector(`.fc-day-header[data-date="${selectedDate.format('YYYY-MM-DD')}"]`).classList.add('fc-day-selected')
        }
      }
    },

    ...mapGetters({
      shows: 'shows/shows',
      playlists: 'playlists/playlists',
      selectedShow: 'shows/selectedShow',
      timeslots: 'shows/timeslots',
      getPlaylistById: 'playlists/getPlaylistById',
      files: 'files/files',
      getFileById: 'files/getFileById',
    })
  },

  created() {
    this.$store.dispatch('shows/fetchShows', {
      callback: () => {
        if (!this.selectedShow) {
          return
        }

        this.$nextTick(() => {
          this.showHasSwitched()
          this.$refs.showSelector.updateInputSelector()
        })
      }
    })
  },

  mounted() {
    this.$nextTick(() => {
      try {
        document.querySelectorAll('.fc-day-header[data-date]').forEach(el => el.classList.remove('fc-day-selected'))
        document.querySelector(`.fc-day-header[data-date="${getISODateString()}"]`).classList.add('fc-day-selected')
      } catch (e) {
        // Full Calendar might not be initialized yet.
      }
    })
  },

  methods: {
    changeView(view) {
      this.view = view
    },

    changeDay(delta) {
      this.selectedDay = new Date(this.selectedDay.setDate(this.selectedDay.getDate() + delta))
    },

    selectDay(date) {
      this.selectedDay = date
    },

    switchShow(index) {
      this.$store.commit('shows/switchShow', index)
      this.loadCalendarSlots()
    },

    // This is the callback function that is activated by the show-selector
    // component, whenever the user switches to a different show
    showHasSwitched() {
      this.$store.dispatch('playlists/fetch', {
        slug: this.selectedShow.slug,
        callback: () => console.log(this.playlists)
      })

      this.$log.debug('show has switched to', this.selectedShow.name)
      let start = this.$refs.calendar.fireMethod('getView').start.format()
      let end = this.$refs.calendar.fireMethod('getView').end.format()
      this.loadTimeslots(start, end)
    },

    getShowTitleById(id) {
      let i = this.shows.findIndex(show => show.id === id)
      if (i >= 0) {
        return this.shows[i].name
      } else {
        return 'Error: no show found for this timeslot'
      }
    },

    getShowIndexById(id) {
      let i = this.shows.findIndex(show => show.id === id)
      if (i >= 0) {
        return i
      } else {
        this.$log.error('No show found for id ' + id)
        return 0
      }
    },

    timeslotClicked(slot) {
      const timeslot = {...slot}
      timeslot.show = slot.show.id

      if (timeslot.show !== this.selectedShow.id) {
        this.switchShow(this.getShowIndexById(timeslot.show))
      } else {
        this.$refs.appModalEmissionManagerEdit.open(timeslot)
      }
    },

    // this handler will be called whenever the user clicks on one of the
    // displayed timeslots
    eventSelected(event) {
      // in conflict resolution mode only the newly generated events are
      // clickable. if there is no conflict for an event, only a modal
      // with a short notice should be opend, otherwise the resolution modal
      if (this.conflictMode) {
        if (event.hash === undefined) {
          return
        } else if (this.conflictSolutions[event.hash] === undefined) {
          this.$refs.appModalEmissionManagerResolve.openNotNeeded()
        } else {
          this.$refs.appModalEmissionManagerResolve.open(event)
        }
      }
          // standard mode only those events are clickable that belong to the
      // currently selected show.
      else {
        let timeslot = this.timeslots.find(slot => slot.id === event.id)
        if (timeslot.show !== this.selectedShow.id) {
          this.switchShow(this.getShowIndexById(timeslot.show))
        } else {
          this.$refs.appModalEmissionManagerEdit.open(timeslot)
        }
      }
    },

    // currently this will not be called, as our events are not editable
    // if editable is set to true in the calendar config, this handler will
    // be called if a timeslot was dragged somewhere else
    eventDrop(event) {
      this.$log.debug('eventDrop', event)
      this.notYetImplemented()
    },

    // currently this will not be called, as our events are not editable
    // if editable is set to true in the calendar config, this handler will
    // be called if a timeslot was resized
    eventResize(event) {
      this.$log.debug('eventResize', event)
      this.notYetImplemented()
    },

    // this handler is called when the user creates a new timeslot
    eventCreated(event) {
      if (!this.conflictMode) {
        this.$refs.appModalEmissionManagerCreate.open(event.start, event.end)
      }
    },

    // this is called when the user changes the calendar view, so we just
    // refetch the timeslots with the updated visible date range
    renderView(view) {
      if (this.loaded.shows && this.loaded.playlists) {
        let start = null
        let end = null
        // in case it gets called from a modal, we use the current view
        // otherwise we use the new dates from the view received by the renderView event
        if (view === null) {
          start = this.$refs.calendar.fireMethod('getView').start.format()
          end = this.$refs.calendar.fireMethod('getView').end.format()
        } else {
          start = view.start.format()
          end = view.end.format()
        }
        // we only load new timeslots, if we are not in conflict mode
        if (!this.conflictMode) {
          this.loadTimeslots(start, end)
        }
      }
    },
    resolve(data) {
      this.resolveData = data
      this.conflictMode = true
      this.conflictCount = 0
      this.conflictSolutions = data.solutions
      this.calendarSlots = []
      try {
        for (let i in data.projected) {
          let newSlot = {
            // we need a numeric ID for the event for later selection by the user.
            // with converting the hash to a number (in this case a float), we
            // do not risk using a number that is already used by a timeslot id
            // of a conflicting timeslot
            id: Number(data.projected[i].hash),
            // the hash is needed to compare against solutions and conflicts
            hash: data.projected[i].hash,
            start: data.projected[i].start,
            end: data.projected[i].end,
            title: this.$t('new'),
            collisions: [],
            solutionChoices: [],
            className: 'noconflict',
            editable: false,
          }
          if (data.projected[i].collisions.length > 0) {
            newSlot.className = 'conflict'
            newSlot.solutionChoices = data.projected[i].solution_choices
            for (let col of data.projected[i].collisions) {
              let conflictingSlot = {
                id: col.id,
                start: col.start,
                end: col.end,
                title: col.show_name,
                className: 'otherShow',
                editable: false,
              }
              this.calendarSlots.push(conflictingSlot)
              this.conflictCount++
              newSlot.collisions.push(col)
            }
          }
          this.calendarSlots.push(newSlot)
        }
      } catch (err) {
        this.$log.error(err)
      }
    },

    resolveEvent(toResolve, mode) {
      let calendarSlot = this.calendarSlots.find(s => s.id === toResolve.id)
      let originalSlot = this.resolveData.projected.find(s => s.hash === toResolve.hash)
      // we only need the conflicting slot specifically for theirs-both mode, where there should be only one collision
      let conflictingSlot = this.calendarSlots.find(s => s.id === toResolve.collisions[0].id)

      // we only reduce the conflict count, if there was no other solution set already
      if (this.conflictSolutions[toResolve.hash] === '') {
        this.conflictCount -= toResolve.collisions.length
      }

      // if there already was a resolution chosen before, that added a second timeslot
      // because either the "ours" or "theirs" was split, we have to clean it up before
      // in the calendar before setting a new resolution
      let oldResolutionSlot = this.calendarSlots.findIndex(s => s.id === calendarSlot.id * 10)
      if (oldResolutionSlot > -1) {
        this.calendarSlots.splice(oldResolutionSlot, 1)
      }

      // and in case their was a ours-* choice before, we have to reset the (one)
      // conflicting slot to its original start and end time
      conflictingSlot.start = toResolve.collisions[0].start
      conflictingSlot.end = toResolve.collisions[0].end

      // for a detailed description of the resolution modes, see https://docs.aura.radio/en/latest/user/timeslot-collision-detection.html
      // and https://docs.aura.radio/en/latest/developer/misc/conflict-resolution.html
      switch (mode) {
        case 'theirs':
          this.conflictSolutions[toResolve.hash] = mode
          calendarSlot.className = 'timeslot-discarded'
          calendarSlot.title = this.$t('new')
          calendarSlot.start = originalSlot.start
          calendarSlot.end = originalSlot.end
          for (let theirs of toResolve.collisions) {
            this.calendarSlots.find(s => s.id === theirs.id).className = 'timeslot-accepted'
          }
          this.renderView(null)
          break

        case 'ours':
          this.conflictSolutions[toResolve.hash] = mode
          calendarSlot.className = 'timeslot-accepted'
          calendarSlot.title = this.$t('new')
          calendarSlot.start = originalSlot.start
          calendarSlot.end = originalSlot.end
          for (let theirs of toResolve.collisions) {
            this.calendarSlots.find(s => s.id === theirs.id).className = 'timeslot-discarded'
          }
          this.renderView(null)
          break

        case 'theirs-start':
        case 'theirs-end':
        case 'theirs-both':
          this.conflictSolutions[toResolve.hash] = mode
          calendarSlot.className = 'timeslot-partly'
          calendarSlot.title = 'new [' + mode + ']'
          if (mode === 'theirs-start') {
            calendarSlot.start = toResolve.collisions[0].end
            calendarSlot.end = originalSlot.end
          } else if (mode === 'theirs-end') {
            calendarSlot.start = originalSlot.start
            calendarSlot.end = toResolve.collisions[0].start
          } else {
            calendarSlot.start = originalSlot.start
            calendarSlot.end = toResolve.collisions[0].start
            this.calendarSlots.push({
              id: calendarSlot.id * 10,
              start: toResolve.collisions[0].end,
              end: originalSlot.end,
              title: 'new [theirs-both]',
              className: 'timeslot-partly',
              editable: false,
            })
          }
          for (let theirs of toResolve.collisions) {
            this.calendarSlots.find(s => s.id === theirs.id).className = 'timeslot-accepted'
          }
          this.renderView(null)
          break

        case 'ours-start':
        case 'ours-end':
        case 'ours-both':
          this.conflictSolutions[toResolve.hash] = mode
          calendarSlot.className = 'timeslot-accepted'
          calendarSlot.title = 'new [' + mode + ']'
          if (mode === 'ours-start') {
            conflictingSlot.start = toResolve.collisions[0].start
            conflictingSlot.end = originalSlot.start
          } else if (mode === 'ours-end') {
            conflictingSlot.start = originalSlot.end
            conflictingSlot.end = toResolve.collisions[0].end
          } else {
            conflictingSlot.start = toResolve.collisions[0].start
            conflictingSlot.end = originalSlot.start
            this.calendarSlots.push({
              id: calendarSlot.id * 10,
              start: originalSlot.end,
              end: toResolve.collisions[0].end,
              title: conflictingSlot.title,
              className: 'timeslot-partly',
              editable: false,
            })
          }
          for (let theirs of toResolve.collisions) {
            this.calendarSlots.find(s => s.id === theirs.id).className = 'timeslot-partly'
          }
          this.renderView(null)
          break

        default:
          this.$log.error('EmissionManager.resolveEvent')
          this.$log.error('toResolve:', toResolve)
          this.$log.error('mode:', mode)
          alert('Error: an undefined conflict resolution mode was chosen. See console for details')
          break
      }
    },

    resolveCancel() {
      this.conflictMode = false
      this.renderView(null)
    },

    // submit a conflict-resolved schedule to steering
    async resolveSubmit() {
      // TODO: check why steering returns undefined and null values here
      if (this.resolveData.schedule.add_business_days_only === undefined) {
        this.resolveData.schedule.add_business_days_only = false
      }
      if (this.resolveData.schedule.add_days_no === null) {
        this.resolveData.schedule.add_days_no = 0
      }
      if (this.resolveData.schedule.is_repetition === undefined) {
        this.resolveData.schedule.is_repetition = false
      }
      if (this.resolveData.schedule.default_playlist_id === null) {
        this.resolveData.schedule.default_playlist_id = 0
      }
      if (this.resolveData.schedule.automation_id === null) {
        this.resolveData.schedule.automation_id = 0
      }
      if (this.resolveData.schedule.by_weekday === undefined) {
        this.resolveData.schedule.by_weekday = 0
      }

      // create the resolved schedule object including solutions
      let resolvedSchedule = {
        schedule: this.resolveData.schedule,
        solutions: this.resolveData.solutions,
      }

      this.$log.debug('resolveSubmit: schedule:', resolvedSchedule)
      this.submitting = true
      this.serverErrors = []
      try {
          await this.$store.dispatch('shows/submitSchedule', {
              showId: this.selectedShow.id,
              schedule: resolvedSchedule,
          })
          this.conflictMode = false
          this.renderView(null)
      } catch (e) {
          if (e.response?.status === 409) {
              this.resolve(e.response.data)
          } else {
              this.serverErrors = e.errors
          }
      } finally {
          this.submitting = false
      }
    },

    loadCalendarSlots() {
      this.calendarSlots = []
      for (let i in this.timeslots) {
        const isEmpty = !this.timeslots[i].playlist_id
        let emptyText = ''
        let highlighting = 'otherShow'

        if (this.timeslots[i].show === this.selectedShow.id) {
          highlighting = 'currentShow '
          highlighting += isEmpty ? 'emptySlot' : ''
          emptyText = isEmpty ? this.$t('calendar.empty') : ''
        }

        this.calendarSlots.push({
          id: this.timeslots[i].id,
          start: this.timeslots[i].start,
          end: this.timeslots[i].end,
          title: this.getShowTitleById(this.timeslots[i].show) + `\n${emptyText}`,
          className: highlighting
        })
      }
    },

    loadTimeslots(start, end) {
      this.$store.dispatch('shows/fetchTimeslots', {
        start: start,
        end: end,
        callback: () => {
          this.loadCalendarSlots()
        }
      })
    },

    isMismatchedLength(playlist, timeslot) {
      const timeslotDuration = this.minutesToNanoseconds(
          this.prettyDuration(timeslot.start, timeslot.end).minutes
      )

      const playlistDuration = this.hmsToNanoseconds(
          this.playlistDuration(playlist)
      )

      let delta = 0
      const unknowns = playlist.entries.filter(entry => !entry.duration)
      if (unknowns.length === 1) {
        delta = timeslotDuration - playlistDuration
      }

      console.log(timeslotDuration, playlistDuration + delta)

      return timeslotDuration !== playlistDuration + delta
    },

    notYetImplemented: function () {
      alert(this.$t('unimplemented'))
    },
  },
}
</script>