import { createFileRoute } from '@tanstack/react-router'
import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
import { useCallback, useMemo, useState } from 'react'
import { useForm } from 'react-hook-form'
import { zodResolver } from '@hookform/resolvers/zod'
import { toast } from 'sonner'
import type { Filter } from '@/components/reui/filters'
import { api } from '@/lib/api-client'
import { createDomainSchema, type BulkUpdateDomainsInput, type CreateDomainInput } from '@/lib/schemas'
import {
  bulkUpdateDomains,
  domainKeys,
  domainsListQueryOptions,
  groupsQueryOptions,
  serviceBindingKeys,
} from '@/queries'
import { PageShell } from '@/components/page-shell'
import { PageHeader } from '@/components/page-header'
import { DomainKpiCards } from '@/components/domain-kpi-cards'
import { ResourcePage } from '@/components/reui-kit'
import {
  DOMAIN_TABS,
  createDefaultDomainFilters,
  domainFilterFieldValue,
  domainTabFilter,
  useDomainColumns,
  useDomainFilterFields,
} from '@/components/columns/domains-columns'
import { DomainsBulkToolbar } from '@/components/domains/domains-bulk-toolbar'
import { FormSheet } from '@/components/form-sheet'
import { FormFieldSimple } from '@/components/form-field'
import { LoadingButton } from '@/components/loading-button'
import { ConfirmDialog } from '@/components/confirm-dialog'
import { Button } from '@cfdm/ui/components/button'
import { Input } from '@cfdm/ui/components/input'
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@cfdm/ui/components/select'
import { FieldGroup } from '@cfdm/ui/components/field'
import type { DomainListItem } from '@/lib/schemas'

export const Route = createFileRoute('/_auth/domains/')({
  loader: ({ context: { queryClient } }) =>
    Promise.all([
      queryClient.ensureQueryData(domainsListQueryOptions()),
      queryClient.ensureQueryData(groupsQueryOptions()),
    ]),
  component: DomainsPage,
})

function DomainsPage() {
  const [sheetOpen, setSheetOpen] = useState(false)
  const [importGroupId, setImportGroupId] = useState('')
  const [deleteTarget, setDeleteTarget] = useState<DomainListItem | null>(null)
  const [filters, setFilters] = useState<Filter[]>(createDefaultDomainFilters)
  const [activeTab, setActiveTab] = useState('all')
  const queryClient = useQueryClient()
  const handleSelectTab = useCallback((tabId: string) => setActiveTab(tabId), [])

  const {
    data: domains,
    isLoading,
    isError,
    error,
    refetch,
  } = useQuery(domainsListQueryOptions())
  const { data: groups } = useQuery(groupsQueryOptions())

  const groupItems = useMemo(
    () => [
      { label: 'Без группы', value: 'none' },
      ...(groups?.map((g) => ({ label: g.name, value: String(g.id) })) ?? []),
    ],
    [groups],
  )

  const filterFields = useDomainFilterFields(groupItems)

  const form = useForm<CreateDomainInput>({
    resolver: zodResolver(createDomainSchema),
    defaultValues: { zone_name: '', group_id: '' },
  })

  const createMutation = useMutation({
    mutationFn: (body: { zone_name: string; group_id?: number }) =>
      api.post('/api/v1/domains', body),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: domainKeys.all })
      form.reset({ zone_name: '', group_id: importGroupId })
      setSheetOpen(false)
      toast.success('Домен импортирован')
    },
    onError: (err) => {
      toast.error(err instanceof Error ? err.message : 'Не удалось импортировать домен')
    },
  })

  const deleteMutation = useMutation({
    mutationFn: (id: number) => api.delete(`/api/v1/domains/${id}`),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: domainKeys.all })
      queryClient.invalidateQueries({ queryKey: serviceBindingKeys.all })
      setDeleteTarget(null)
      toast.success('Зона удалена')
    },
    onError: (err) => {
      toast.error(err instanceof Error ? err.message : 'Не удалось удалить зону')
    },
  })

  const bulkMutation = useMutation({
    mutationFn: (body: BulkUpdateDomainsInput) => bulkUpdateDomains(body),
    onSuccess: (data) => {
      queryClient.invalidateQueries({ queryKey: domainKeys.all })
      toast.success(`Обновлено: ${data.updated}`)
    },
    onError: (err) => {
      toast.error(err instanceof Error ? err.message : 'Не удалось обновить')
    },
  })

  const { columns } = useDomainColumns({
    onRequestDelete: setDeleteTarget,
    isDeleting: deleteMutation.isPending,
    enableSelection: true,
  })

  const handleCreate = (values: CreateDomainInput) => {
    createMutation.mutate({
      zone_name: values.zone_name.trim(),
      group_id: importGroupId ? Number(importGroupId) : undefined,
    })
  }

  const handleImportGroupChange = (value: string | null) => {
    const next = value === 'none' || !value ? '' : value
    setImportGroupId(next)
    form.setValue('group_id', next)
  }

  const primaryAction = (
    <Button type="button" onClick={() => setSheetOpen(true)}>
      Импортировать домен
    </Button>
  )

  return (
    <PageShell>
      <PageHeader
        title="Домены"
        description="Импортированные зоны Cloudflare"
        actions={primaryAction}
      />
      <DomainKpiCards
        domains={domains}
        activeTab={activeTab}
        isLoading={isLoading && !domains}
        onSelectTab={handleSelectTab}
      />
      <ResourcePage
        title="Домены"
        description="Импортированные зоны Cloudflare"
        hideHeader
        tabs={DOMAIN_TABS.map((tab) => ({ ...tab }))}
        activeTab={activeTab}
        onTabChange={setActiveTab}
        tabFilter={domainTabFilter}
        filterFields={filterFields}
        filters={filters}
        onFiltersChange={setFilters}
        onClearFilters={() => setFilters(createDefaultDomainFilters())}
        getFilterFieldValue={domainFilterFieldValue}
        columns={columns}
        data={domains ?? []}
        getRowId={(row) => String(row.id)}
        isLoading={isLoading}
        isError={isError}
        error={error}
        onRetry={refetch}
        enableRowSelection
        selectionToolbar={({ selectedIds, clearSelection }) => (
          <DomainsBulkToolbar
            count={selectedIds.length}
            isPending={bulkMutation.isPending}
            groupItems={groupItems}
            onAssignGroup={(groupId) => {
              bulkMutation.mutate(
                { ids: selectedIds.map(Number), group_id: groupId },
                { onSuccess: () => clearSelection() },
              )
            }}
            onSetEnvironment={(environment) => {
              bulkMutation.mutate(
                { ids: selectedIds.map(Number), environment },
                { onSuccess: () => clearSelection() },
              )
            }}
            onAddTag={(tag) => {
              bulkMutation.mutate(
                { ids: selectedIds.map(Number), tags_add: [tag] },
                { onSuccess: () => clearSelection() },
              )
            }}
            onClear={clearSelection}
          />
        )}
        emptyState={{
          title: 'Домены не импортированы',
          description: 'Импортируйте зону из аккаунта Cloudflare',
          action: (
            <Button type="button" onClick={() => setSheetOpen(true)}>
              Импортировать домен
            </Button>
          ),
        }}
      />

      <FormSheet
        open={sheetOpen}
        onOpenChange={setSheetOpen}
        title="Импорт домена"
        description="Добавить зону из аккаунта Cloudflare в менеджер"
        form={form}
        onSubmit={handleCreate}
        footer={
          <LoadingButton
            type="submit"
            className="w-full"
            isLoading={createMutation.isPending}
            loadingLabel="Импорт…"
          >
            Импортировать
          </LoadingButton>
        }
      >
        <FieldGroup>
          <FormFieldSimple
            label="Имя зоны"
            htmlFor="zone_name"
            error={form.formState.errors.zone_name}
          >
            <Input
              id="zone_name"
              placeholder="example.com"
              {...form.register('zone_name')}
              aria-invalid={!!form.formState.errors.zone_name}
            />
          </FormFieldSimple>
          <FormFieldSimple label="Группа" htmlFor="import_group_id">
            <Select
              items={groupItems}
              value={importGroupId || 'none'}
              onValueChange={handleImportGroupChange}
            >
              <SelectTrigger id="import_group_id" className="w-full">
                <SelectValue placeholder="Без группы" />
              </SelectTrigger>
              <SelectContent>
                {groupItems.map((item) => (
                  <SelectItem key={item.value} value={item.value}>
                    {item.label}
                  </SelectItem>
                ))}
              </SelectContent>
            </Select>
          </FormFieldSimple>
        </FieldGroup>
      </FormSheet>

      <ConfirmDialog
        open={deleteTarget !== null}
        onOpenChange={(open) => {
          if (!open) setDeleteTarget(null)
        }}
        title="Удалить зону?"
        description={
          deleteTarget
            ? `Зона «${deleteTarget.zone_name}» будет удалена из менеджера вместе с DNS-записями и привязками. Зона в Cloudflare не затрагивается.`
            : ''
        }
        onConfirm={() => {
          if (deleteTarget) deleteMutation.mutate(deleteTarget.id)
        }}
        disabled={deleteMutation.isPending}
      />
    </PageShell>
  )
}