<template>
  <UDashboardNavbar :badge="filteredRows.length" title="Ausgangsbelege">
    <template #right>
      <UInput
          id="searchinput"
          v-model="searchString"
          autocomplete="off"
          class="hidden lg:block"
          icon="i-heroicons-funnel"
          placeholder="Suche..."
          @keydown.esc="$event.target.blur()"
      >
        <template #trailing>
          <UKbd value="/"/>
        </template>
      </UInput>
      <UButton
          v-if="searchString.length > 0"
          color="error"
          icon="i-heroicons-x-mark"
          variant="outline"
          @click="clearSearchString()"
      />
      <UButton
          @click="router.push(`/createDocument/edit`)"
      >
        + Ausgangsbeleg
      </UButton>
    </template>
  </UDashboardNavbar>
  <UDashboardToolbar>
    <template #right>
      <USelectMenu
          v-if="selectableFilters.length > 0"
          v-model="selectedFilters"
          :color="selectedFilters.length > 0 ? 'primary' : 'white'"
          :items="selectableFilters"
          :content="{ width: 'min-w-max' }"
          icon="i-heroicons-adjustments-horizontal-solid"
          multiple
          @update:model-value="value => tempStore.modifyFilter('createddocumentsList', 'main', value)"
      >
        <template #label>
          Filter
        </template>
      </USelectMenu>
    </template>
  </UDashboardToolbar>
  <UTabs :items="selectedTypes" class="m-3">
    <template #default="{item}">
      {{ item.label }}
      <UBadge
          class="ml-2"
          variant="outline"
      >
        {{ getRowsForTab(item.key).length }}
      </UBadge>
    </template>
    <template #content="{item}">
      <div style="height: 80vh; overflow-y: scroll">
        <UTable
            :columns="normalizeTableColumns(getColumnsForTab(item.key))"
            :data="getRowsForTab(item.key)"
            :ui="{ divide: 'divide-gray-200 dark:divide-gray-800' }"
            class="w-full"
            :on-select="selectItem"
        >
          <template #type-cell="{row}">
            <span v-if="row.original.type === 'cancellationInvoices'" class="text-cyan-500">{{
                dataStore.documentTypesForCreation[row.original.type].labelSingle
              }} für {{ filteredRows.find(i => row.original.createddocument?.id === i.id)?.documentNumber }}</span>
            <span v-else>{{ dataStore.documentTypesForCreation[row.original.type].labelSingle }}</span>
          </template>

          <template #state-cell="{row}">
            <span v-if="row.original.state === 'Entwurf'" class="text-rose-500">{{ row.original.state }}</span>
            <span
                v-if="row.original.state === 'Gebucht' && !hasCancellationInvoice(row.original)"
                class="text-primary-500"
            >
              {{ row.original.state }}
            </span>
            <span
                v-else-if="row.original.state === 'Gebucht' && hasCancellationInvoice(row.original) && ['invoices','advanceInvoices'].includes(row.original.type)"
                class="text-cyan-500"
            >
              Storniert mit {{ getCancellationInvoice(row.original)?.documentNumber }}
            </span>
            <span v-else-if="row.original.state === 'Gebucht'" class="text-primary-500">{{ row.original.state }}</span>
          </template>

          <template #partner-cell="{row}">
            <span v-if="row.original.customer && row.original.customer.name.length < 21">{{ row.original.customer ? row.original.customer.name : "" }}</span>
            <UTooltip v-else-if="row.original.customer && row.original.customer.name.length > 20" :text="row.original.customer.name">
              {{ row.original.customer.name.substring(0, 20) }}...
            </UTooltip>
          </template>

          <template #reference-cell="{row}">
            <span v-if="row.original === filteredRows[selectedItem]" class="text-primary-500 font-bold">{{ row.original.documentNumber }}</span>
            <span v-else>{{ row.original.documentNumber }}</span>
          </template>

          <template #date-cell="{row}">
            <span v-if="row.original.date">{{ row.original.date ? dayjs(row.original.date).format("DD.MM.YY") : '' }}</span>
            <span v-if="row.original.documentDate">{{ row.original.documentDate ? dayjs(row.original.documentDate).format("DD.MM.YY") : '' }}</span>
          </template>

          <template #dueDate-cell="{row}">
             <span
                 v-if="row.original.state === 'Gebucht' && row.original.paymentDays && ['invoices','advanceInvoices'].includes(row.original.type) && !hasCancellationInvoice(row.original)"
                 :class="dayjs(row.original.documentDate).add(row.original.paymentDays,'day').diff(dayjs()) <= 0 && !isPaid(row.original) ? ['text-rose-500'] : '' "
             >
               {{ row.original.documentDate ? dayjs(row.original.documentDate).add(row.original.paymentDays, 'day').format("DD.MM.YY") : '' }}
             </span>
          </template>

          <template #paid-cell="{row}">
            <div
                v-if="(row.original.type === 'invoices' ||row.original.type === 'advanceInvoices') && row.original.state === 'Gebucht' && !hasCancellationInvoice(row.original)">
              <span v-if="useSum().getIsPaid(row.original,items)" class="text-primary-500">Bezahlt</span>
              <span v-else class="text-rose-600">Offen</span>
            </div>
          </template>

          <template #amount-cell="{row}">
            <span v-if="!deliveryNoteLikeDocumentTypes.includes(row.original.type)">{{ displayCurrency(useSum().getCreatedDocumentSum(row.original, items)) }}</span>
          </template>

          <template #amountOpen-cell="{row}">
            <span
                v-if="!['cancellationInvoices','confirmationOrders', ...quoteLikeDocumentTypes, ...deliveryNoteLikeDocumentTypes].includes(row.original.type) && row.original.state !== 'Entwurf' && !hasCancellationInvoice(row.original) && !useSum().getIsPaid(row.original,items) ">
              {{ displayCurrency(useSum().getCreatedDocumentOpenAmount(row.original, items)) }}
            </span>
          </template>
          <template #empty>
            <TableEmptyState label="Keine Belege anzuzeigen" />
          </template>
        </UTable>
      </div>
    </template>
  </UTabs>
</template>

<script setup>
import dayjs from "dayjs";
import { ref, computed, watch } from 'vue';

const dataStore = useDataStore()
const tempStore = useTempStore()
const router = useRouter()
const quoteLikeDocumentTypes = ['quotes', 'costEstimates']
const deliveryNoteLikeDocumentTypes = ['deliveryNotes', 'packingSlips']

const type = "createddocuments"
const dataType = dataStore.dataTypes[type]

const items = ref([])
const selectedItem = ref(0)
const activeTabIndex = ref(0)

// Debounce-Logik für die Suche
const searchString = ref(tempStore.searchStrings['createddocuments'] || '')
const debouncedSearchString = ref(searchString.value)
let debounceTimeout = null

watch(searchString, (newVal) => {
  clearTimeout(debounceTimeout)
  debounceTimeout = setTimeout(() => {
    debouncedSearchString.value = newVal
    tempStore.modifySearchString('createddocuments', newVal)
  }, 300) // 300ms warten nach dem letzten Tastendruck
})

defineShortcuts({
  '/': () => {
    document.getElementById("searchinput").focus()
  },
  '+': () => {
    router.push('/createDocument/edit')
  },
  'Enter': {
    usingInput: true,
    handler: () => {
      if (filteredRows.value[selectedItem.value]) {
        router.push(`/createDocument/show/${filteredRows.value[selectedItem.value].id}`)
      }
    }
  },
  'arrowdown': () => {
    if (selectedItem.value < filteredRows.value.length - 1) {
      selectedItem.value += 1
    } else {
      selectedItem.value = 0
    }
  },
  'arrowup': () => {
    if (selectedItem.value === 0) {
      selectedItem.value = filteredRows.value.length - 1
    } else {
      selectedItem.value -= 1
    }
  }
})

const setupPage = async () => {
  items.value = (await useEntities("createddocuments").select("*, customer(id,name), statementallocations(id,amount),linkedDocument(*)", "documentNumber", true, true))
}

setupPage()

const templateColumns = [
  {key: "reference", label: "Referenz"},
  {key: 'type', label: "Typ"},
  {key: 'state', label: "Status"},
  {key: "amount", label: "Betrag"},
  {key: 'partner', label: "Kunde"},
  {key: "date", label: "Datum"},
  {key: "amountOpen", label: "Offener Betrag"},
  {key: "paid", label: "Bezahlt"},
  {key: "dueDate", label: "Fällig"}
]

const draftColumns = [
  {key: 'type', label: "Typ"},
  {key: 'state', label: "Status"},
  {key: 'partner', label: "Kunde"},
  {key: "date", label: "Erstellt am"},
  {key: "amount", label: "Betrag"}
]

const selectedColumns = ref(tempStore.columns["createddocuments"] ? tempStore.columns["createddocuments"] : templateColumns)
const columns = computed(() => templateColumns.filter((column) => selectedColumns.value.find(i => i.key === column.key)))

const getColumnsForTab = (tabKey) => {
  if (tabKey === 'drafts') {
    return draftColumns
  }
  return columns.value
}

const templateTypes = [
  { key: "drafts", label: "Entwürfe" },
  { key: "invoices", label: "Rechnungen" },
  { key: "quotes", label: "Angebote" },
  { key: "costEstimates", label: "Kostenschätzungen" },
  { key: "deliveryNotes", label: "Lieferscheine" },
  { key: "packingSlips", label: "Packscheine" },
  { key: "confirmationOrders", label: "Auftragsbestätigungen" }
]
const selectedTypes = ref(tempStore.filters["createddocuments"] ? tempStore.filters["createddocuments"] : templateTypes)
const types = computed(() => {
  return templateTypes.filter((type) => selectedTypes.value.find(i => i.key === type.key))
})

const unwrapSelectedRow = (itemLike) => itemLike?.original || itemLike

const selectItem = (itemLike) => {
  const item = unwrapSelectedRow(itemLike)

  if (!item?.id) {
    return
  }

  if (item.state === "Entwurf") {
    router.push(`/createDocument/edit/${item.id}`)
  } else {
    router.push(`/createDocument/show/${item.id}`)
  }
}

const displayCurrency = (value, currency = "€") => {
  return `${Number(value).toFixed(2).replace(".", ",")} ${currency}`
}

const clearSearchString = () => {
  tempStore.clearSearchString('createddocuments')
  searchString.value = ''
  debouncedSearchString.value = ''
}

const getCancellationInvoice = (row) => {
  return items.value.find((item) => {
    const linkedDocumentId = item.createddocument?.id || item.createddocument
    return item.type === 'cancellationInvoices'
        && item.state !== 'Entwurf'
        && !item.archived
        && linkedDocumentId === row.id
  })
}

const hasCancellationInvoice = (row) => Boolean(getCancellationInvoice(row))

const openUnpaidInvoicesFilter = {
  name: 'Nur offene Belege',
  filterFunction: (row) => {
    return row.state === 'Entwurf' || useSum().isOpenCreatedDocument(row, items.value)
  }
}

const availableFilters = computed(() => [...dataType.filters, openUnpaidInvoicesFilter])
const selectableFilters = computed(() => availableFilters.value.map(i => i.name))
const selectedFilters = ref(
  tempStore.filters?.createddocumentsList?.main
    || dataType.filters.filter(i => i.default).map(i => i.name)
    || []
)

const filteredRows = computed(() => {
  let tempItems = items.value.filter(i => types.value.find(x => {
    if (x.key === 'drafts') return i.state === 'Entwurf'
    if (i.state === 'Entwurf' && x.key !== 'drafts') return false
    if (x.key === 'invoices') return ['invoices', 'advanceInvoices', 'cancellationInvoices'].includes(i.type)
    return x.key === i.type
  }))

  tempItems = tempItems.filter(i => i.type !== "serialInvoices")

  tempItems = tempItems.map(i => {
    return {
      ...i,
      class: i.archived ? 'bg-red-500/50 dark:bg-red-400/50' : null
    }
  })

  if (selectedFilters.value.length > 0) {
    selectedFilters.value.forEach(filterName => {
      const filter = availableFilters.value.find(i => i.name === filterName)
      if (filter?.filterFunction) {
        tempItems = tempItems.filter(filter.filterFunction)
      }
    })
  }

  // Hier nutzen wir nun den debounced Wert für die lokale Suche
  const results = useSearch(debouncedSearchString.value, tempItems.slice().reverse())
  return results
})

const getRowsForTab = (tabKey) => {
  return filteredRows.value.filter(row => {
    if (tabKey === 'drafts') return row.state === 'Entwurf'
    if (row.state === 'Entwurf') return false
    if (tabKey === 'invoices') return ['invoices', 'advanceInvoices', 'cancellationInvoices'].includes(row.type)
    return row.type === tabKey
  })
}

const isPaid = (item) => {
  return useSum().getIsPaid(item, items.value)
}
</script>
