'use client'

import { useState } from 'react'
import Link from 'next/link'
import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
import { useTranslation } from 'react-i18next'
import { Plus } from 'lucide-react'
import { toast } from 'sonner'
import { api, type PaginatedResponse, type Offer } from '@/lib/api'
import { DataTable } from '@/components/DataTable'
import { Button } from '@/components/ui/Button'
import { Badge } from '@/components/ui/Badge'
import { Select } from '@/components/ui/Select'

export function OffersPage() {
  const { t } = useTranslation()
  const queryClient = useQueryClient()
  const [search, setSearch] = useState('')
  const [status, setStatus] = useState('')
  const [page, setPage] = useState(1)

  const { data, isLoading } = useQuery({
    queryKey: ['offers', search, status, page],
    queryFn: () =>
      api.get<PaginatedResponse<Offer>>('/offers', {
        params: { search: search || undefined, status: status || undefined, page, per_page: 25 },
      }),
  })

  const remove = useMutation({
    mutationFn: (id: number) => api.delete(`/offers/${id}`),
    onSuccess: () => {
      toast.success(t('offers.messages.deleted'))
      queryClient.invalidateQueries({ queryKey: ['offers'] })
    },
    onError: () => toast.error(t('common.somethingWentWrong')),
  })

  const rows = data?.data.data ?? []
  const meta = data?.data.meta
  const statuses = ['draft', 'sent', 'accepted', 'rejected', 'expired', 'converted'] as const

  return (
    <div className="space-y-5">
      <div className="animate-fade-in-up flex flex-wrap items-center justify-between gap-3">
        <h1 className="premium-heading text-2xl font-bold" data-tour="page-heading">{t('offers.title')}</h1>
        <Link href="/offers/new">
          <Button size="sm">
            <Plus size={14} />
            {t('offers.create')}
          </Button>
        </Link>
      </div>
      <div className="animate-fade-in-up stagger-1">
        <DataTable
          data={rows}
          loading={isLoading}
          emptyMessage={t('common.noResults')}
          onSearch={(q) => {
            setSearch(q)
            setPage(1)
          }}
          searchValue={search}
          searchPlaceholder={t('offers.search')}
          toolbar={
            <Select
              value={status}
              onChange={(e) => {
                setStatus(e.target.value)
                setPage(1)
              }}
              options={[
                { value: '', label: t('common.allStatuses') },
                ...statuses.map((value) => ({
                  value,
                  label: t(`offers.status.${value}`),
                })),
              ]}
            />
          }
          pagination={meta}
          onPageChange={setPage}
          columns={[
            { key: 'offer_number', header: t('common.code'), className: 'font-mono text-xs' },
            { key: 'title', header: t('offers.titleField') },
            {
              key: 'partner',
              header: t('offers.partner'),
              render: (r) => r.partner?.name || '—',
            },
            {
              key: 'status',
              header: t('common.status'),
              render: (r) => (
                <Badge variant="muted">{t(`offers.status.${r.status}`, r.status)}</Badge>
              ),
            },
            {
              key: 'total',
              header: t('offers.total'),
              render: (r) => `${Number(r.total).toLocaleString()} ${r.currency}`,
            },
            {
              key: 'actions',
              header: '',
              render: (r) => (
                <div className="flex gap-2">
                  <Link href={`/offers/${r.id}`} className="text-sm text-brand-600 hover:underline">
                    {t('common.view')}
                  </Link>
                  {r.status !== 'converted' && (
                    <Link
                      href={`/offers/${r.id}/edit`}
                      className="text-sm text-brand-600 hover:underline"
                    >
                      {t('common.edit')}
                    </Link>
                  )}
                  <button
                    type="button"
                    className="text-sm text-red-600 hover:underline"
                    onClick={() => remove.mutate(r.id)}
                  >
                    {t('common.delete')}
                  </button>
                </div>
              ),
            },
          ]}
        />
      </div>
    </div>
  )
}