SpeciesFileGroup/taxonworks

<template>
  <spinner-component
    v-if="isReindexFinished"
    :legend="message"
    :show-legend="false"
  >
    Reindexing... {{ percentComplete }}% completed. Estimated time:
    <CountDown
      :start-date="sampleDate"
      :end-date="lastTime"
    />
  </spinner-component>
</template>
<script setup>
import { computed, ref, watch } from 'vue'
import { DwcOcurrence } from '@/routes/endpoints'
import SpinnerComponent from '@/components/ui/VSpinner.vue'
import CountDown from './Countdown/CountDown.vue'

const CALL_DELAY = 1000
const samplesUpdated = ref([])
const props = defineProps({
  reindex: {
    type: Object,
    required: true
  }
})
const emit = defineEmits(['onReady'])
let sampleDate
let timeoutId
let previousDate = 0

const lastTime = ref(0)
const isReindexFinished = computed(() => !!samplesUpdated.value.length)
const percentComplete = computed(() =>
  Math.trunc(
    100 - (samplesUpdated.value.length * 100) / props.reindex.sample?.length
  )
)

const checkSamplesUpdate = () => {
  if (samplesUpdated.value.length) {
    const sampleGlobalId = samplesUpdated.value[0]

    DwcOcurrence.status({ object_global_id: sampleGlobalId }).then(
      ({ body }) => {
        const updateTime = new Date(body.updated_at).getTime()

        if (sampleDate < updateTime) {
          samplesUpdated.value.splice(0, 1)
          updateCountdown(updateTime)
        }

        if (samplesUpdated.value.length) {
          timeoutId = setTimeout(() => {
            checkSamplesUpdate()
          }, CALL_DELAY)
        } else {
          emit('onReady', true)
        }
      }
    )
  }
}

const updateCountdown = (updateTime) => {
  lastTime.value = calculateEstimatedTime(updateTime)
  previousDate = updateTime
}

const calculateEstimatedTime = (updatedDate) => {
  const timeDiff = updatedDate - (previousDate || sampleDate) + CALL_DELAY

  return sampleDate + timeDiff * samplesUpdated.value.length
}

watch(
  () => props.reindex,
  (reindex) => {
    previousDate = 0
    sampleDate = new Date(reindex.start_time).getTime()
    samplesUpdated.value = reindex.sample.slice()

    checkSamplesUpdate()
  }
)
</script>