import React, { useState, useEffect, useRef } from 'react'
import { useParams, useNavigate, Link } from 'react-router-dom'
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
import { Button } from '@/components/ui/button'
import { Textarea } from '@/components/ui/textarea'
import { Avatar } from '@/components/ui/avatar'
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select'
import { Ic } from '@/icons'
import { ShimmerBox, ShimmerLine } from '@/components/shared/shimmer_frontend'
import { toast } from '@/stores/toast'
import { useTranslation } from '@/i18n'
import { useBillingBadgeStore } from '@/stores/billing-badge'
import { formatDateByLanguage, formatDateTimeByLanguage, formatDualDate } from '@/lib/date-utils'
import { cn, resolveMediaUrl, getMediaFallbackUrl, toFa } from '@/lib/utils'
import type { FactorItem, FactorStatus } from './types'
import {
  fetchFactorDetail,
  reviewFactor,
  cancelFactor,
  uploadFactorTicket,
  deleteFactorTicket,
  clearFactorReceipt,
} from './services/billing-api'
import { BillingStatusBadge } from './components/BillingStatusBadge'
import { BillingServiceBadge } from './components/BillingServiceBadge'
import { ReceiptLightboxDialog } from './components/ReceiptLightboxDialog'

const STATUS_OPTIONS: {
  value: FactorStatus
  label: string
  dotClass: string
}[] = [
  { value: 'awaiting_payment', label: 'در انتظار پرداخت', dotClass: 'bg-amber-500' },
  { value: 'pending', label: 'در انتظار بررسی فیش', dotClass: 'bg-blue-500' },
  { value: 'approved', label: 'پرداخت شده و تایید نهایی', dotClass: 'bg-emerald-500' },
  { value: 'rejected', label: 'رد شده توسط ادمین', dotClass: 'bg-rose-500' },
  { value: 'expired', label: 'منقضی شده (مهلت پرداخت)', dotClass: 'bg-slate-500' },
  { value: 'cancelled', label: 'کنسل‌شده', dotClass: 'bg-red-500' },
]

export default function BillingDetailPage() {
  const { id } = useParams<{ id: string }>()
  const navigate = useNavigate()
  const { t, language } = useTranslation()

  const [factor, setFactor] = useState<FactorItem | null>(null)
  const [isLoading, setIsLoading] = useState<boolean>(true)
  const [error, setError] = useState<string | null>(null)

  const [selectedStatus, setSelectedStatus] = useState<FactorStatus>('awaiting_payment')
  const [rejectReason, setRejectReason] = useState<string>('')
  const [hasChanges, setHasChanges] = useState<boolean>(false)
  const [isSaving, setIsSaving] = useState<boolean>(false)

  const [isUploadingTicket, setIsUploadingTicket] = useState<boolean>(false)
  const [isDeletingTicket, setIsDeletingTicket] = useState<boolean>(false)
  const [isDraggingTicket, setIsDraggingTicket] = useState<boolean>(false)
  const ticketFileInputRef = useRef<HTMLInputElement>(null)

  const [receiptLightboxOpen, setReceiptLightboxOpen] = useState<boolean>(false)
  const [isClearingReceipt, setIsClearingReceipt] = useState<boolean>(false)
  const [receiptError, setReceiptError] = useState<boolean>(false)

  const [copiedCard, setCopiedCard] = useState<boolean>(false)
  const [copiedFactorNumber, setCopiedFactorNumber] = useState<boolean>(false)

  const loadFactor = async (targetId: string | number) => {
    setIsLoading(true)
    setError(null)
    try {
      const data = await fetchFactorDetail(targetId)
      setFactor(data)
      setSelectedStatus(data.status)
      setRejectReason(data.rejected_description || '')
      setHasChanges(false)
      setReceiptError(false)
    } catch (err: any) {
      console.error('Failed to load factor details:', err)
      setError(err?.message || 'صورت‌حساب مالی مورد نظر یافت نشد یا دسترسی به آن امکان‌پذیر نیست.')
      setFactor(null)
    } finally {
      setIsLoading(false)
    }
  }

  useEffect(() => {
    if (id) {
      loadFactor(id)
    }
  }, [id])

  if (isLoading) {
    return (
      <div className="space-y-6">
        <div className="flex items-center justify-between">
          <div className="h-9 w-48 rounded-xl bg-muted/60 animate-pulse" />
          <div className="h-9 w-32 rounded-xl bg-muted/60 animate-pulse" />
        </div>
        <div className="h-28 rounded-2xl bg-card border border-border/60 animate-pulse" />
        <div className="grid grid-cols-1 xl:grid-cols-12 gap-6">
          <div className="xl:col-span-8 space-y-4">
            <div className="h-64 rounded-2xl bg-card border border-border/60 animate-pulse" />
            <div className="h-44 rounded-2xl bg-card border border-border/60 animate-pulse" />
          </div>
          <div className="xl:col-span-4 space-y-4">
            <div className="h-48 rounded-2xl bg-card border border-border/60 animate-pulse" />
            <div className="h-48 rounded-2xl bg-card border border-border/60 animate-pulse" />
          </div>
        </div>
      </div>
    )
  }

  if (error || !factor) {
    return (
      <div className="p-8 text-center bg-card border border-border/70 rounded-2xl max-w-xl mx-auto my-12 space-y-4 shadow-sm">
        <div className="size-14 rounded-2xl bg-rose-500/10 text-rose-600 dark:text-rose-400 flex items-center justify-center mx-auto">
          <Ic name="alertCircle" className="size-7" />
        </div>
        <h2 className="text-base font-bold text-foreground">خطا در بارگذاری صورت‌حساب مالی</h2>
        <p className="text-xs text-muted-foreground leading-relaxed">{error}</p>
        <div className="flex items-center justify-center gap-2 pt-2">
          <Button
            variant="outline"
            size="sm"
            onClick={() => navigate('/billing')}
            className="rounded-xl text-xs font-bold h-9 px-4 gap-1.5"
          >
            <Ic name="receipt" className="size-4" />
            <span>مشاهده همه صورت‌حساب‌ها</span>
          </Button>
          <Button
            variant="default"
            size="sm"
            onClick={() => id && loadFactor(id)}
            className="rounded-xl text-xs font-bold h-9 px-4 gap-1.5"
          >
            <Ic name="refreshCw" className="size-4" />
            <span>تلاش مجدد</span>
          </Button>
        </div>
      </div>
    )
  }

  const detail = factor.detail_service
  const user = factor.user_info
  const isTourOrCustomTrip = factor.service === 'tour' || factor.service === 'custom_trip'
  const isApproved = factor.status === 'approved'
  const isApprovedSelectedWithoutTicket =
    isTourOrCustomTrip && selectedStatus === 'approved' && !factor.ticket_file

  const handleCopyCard = (cardNumber: string) => {
    navigator.clipboard.writeText(cardNumber)
    setCopiedCard(true)
    setTimeout(() => setCopiedCard(false), 2000)
  }

  const handleCopyFactorNumber = (num: string | number) => {
    navigator.clipboard.writeText(String(num))
    setCopiedFactorNumber(true)
    setTimeout(() => setCopiedFactorNumber(false), 2000)
  }

  const handleSaveStatus = async () => {
    if (!factor) return
    if (selectedStatus === 'rejected' && !rejectReason.trim()) {
      toast.error('وارد کردن دلیل رد صورت‌حساب الزامی است.', 'دلیل رد الزامی است')
      return
    }
    if (isApprovedSelectedWithoutTicket) {
      toast.error(
        t('billing.ticketRequiredForApprovedDesc'),
        t('billing.ticketRequiredForApprovedTitle')
      )
      return
    }
    setIsSaving(true)
    try {
      const payload = {
        status: selectedStatus,
        rejected_description: selectedStatus === 'rejected' ? rejectReason.trim() : undefined,
      }
      const updated = await reviewFactor(factor.id, payload)
      setFactor(updated)
      setSelectedStatus(updated.status)
      setRejectReason(updated.rejected_description || '')
      setHasChanges(false)
      useBillingBadgeStore.setState({ lastFetched: null })
      useBillingBadgeStore.getState().fetchCounts()
      const statusLabel =
        STATUS_OPTIONS.find((s) => s.value === selectedStatus)?.label || selectedStatus
      toast.success(
        `وضعیت صورت‌حساب #${factor.factor_number || factor.id} با موفقیت به «${statusLabel}» تغییر یافت.`,
        'بروزرسانی وضعیت'
      )
      if (selectedStatus === 'approved') {
        navigate('/billing')
      }
    } catch (err: any) {
      toast.error(err?.message || 'خطا در ذخیره‌سازی وضعیت صورت‌حساب.', 'خطا در عملیات')
    } finally {
      setIsSaving(false)
    }
  }

  const handleCancelFactor = async () => {
    if (!factor) return
    if (!window.confirm(t('billing.cancelInvoiceConfirm'))) return
    setIsSaving(true)
    try {
      const updated = await cancelFactor(factor.id)
      setFactor(updated)
      setSelectedStatus(updated.status)
      setHasChanges(false)
      useBillingBadgeStore.setState({ lastFetched: null })
      useBillingBadgeStore.getState().fetchCounts()
      toast.success(t('billing.invoiceCancelledSuccess'), 'کنسل کردن فاکتور')
      navigate('/billing')
    } catch (err: any) {
      toast.error(err?.message || 'خطا در کنسل کردن فاکتور.', 'خطا در لغو')
    } finally {
      setIsSaving(false)
    }
  }

  const handleUploadTicketFile = async (file: File) => {
    if (!factor) return
    setIsUploadingTicket(true)
    try {
      const updated = await uploadFactorTicket(factor.id, file)
      setFactor(updated)
      if (updated.status !== 'approved') {
        setSelectedStatus('approved')
        setHasChanges(true)
      } else {
        setSelectedStatus(updated.status)
        setHasChanges(false)
      }
      useBillingBadgeStore.setState({ lastFetched: null })
      useBillingBadgeStore.getState().fetchCounts()
      toast.success(
        updated.status !== 'approved'
          ? t('billing.ticketUploadSuccessPendingSave')
          : t('billing.ticketUploadSuccess')
      )
    } catch (err: any) {
      toast.error(err?.message || 'خطا در بارگذاری فایل بلیت.')
    } finally {
      setIsUploadingTicket(false)
      if (ticketFileInputRef.current) ticketFileInputRef.current.value = ''
    }
  }

  const handleDeleteTicket = async () => {
    if (!factor) return
    if (factor.status === 'approved') {
      toast.warning(
        t('billing.cannotDeleteTicketWhenApproved'),
        t('billing.ticketRequiredTitle')
      )
      return
    }
    if (!window.confirm(t('billing.deleteTicketConfirm'))) return
    setIsDeletingTicket(true)
    try {
      const updated = await deleteFactorTicket(factor.id)
      setFactor(updated)
      if (selectedStatus === 'approved') {
        setSelectedStatus(updated.status)
        setHasChanges(false)
      }
      toast.success(t('billing.ticketDeleteSuccess'))
    } catch (err: any) {
      toast.error(err?.message || 'خطا در حذف بلیت.')
    } finally {
      setIsDeletingTicket(false)
    }
  }

  const handleClearReceipt = async () => {
    if (!factor) return
    if (!window.confirm(t('billing.confirmClearReceipt'))) return
    setIsClearingReceipt(true)
    try {
      await clearFactorReceipt(factor.id)
      setFactor((prev) => (prev ? { ...prev, transaction_receipt: null } : null))
      setReceiptError(false)
      toast.success(t('billing.receiptClearedSuccess'))
    } catch (err: any) {
      toast.error(err?.message || 'خطا در حذف تصویر رسید.')
    } finally {
      setIsClearingReceipt(false)
    }
  }

  return (
    <div className="space-y-6 pb-12">
      {/* Top Header & Breadcrumbs */}
      <div className="flex flex-col sm:flex-row sm:items-center justify-between gap-4 pb-4 border-b border-border/70">
        <div className="space-y-1.5">
          <div className="flex items-center gap-2 text-xs text-muted-foreground">
            <Link
              to="/billing"
              className="hover:text-primary transition-colors flex items-center gap-1 font-medium"
            >
              <Ic name="receipt" className="size-3.5" />
              <span>صورت‌حساب‌های مالی</span>
            </Link>
            <span>/</span>
            <span className="font-mono text-foreground font-semibold">
              #{toFa(factor.factor_number || factor.id)}
            </span>
          </div>

          <div className="flex flex-wrap items-center gap-3">
            <h1 className="text-xl sm:text-2xl font-black text-foreground flex items-center gap-2">
              <span>صورت‌حساب مالی</span>
              <span className="font-mono text-primary">#{toFa(factor.factor_number || factor.id)}</span>
            </h1>
            <BillingServiceBadge service={factor.service} />
            <BillingStatusBadge status={factor.status} />
          </div>
        </div>

        <div className="flex flex-wrap items-center gap-2.5 shrink-0">
          {/* Back button */}
          <Button
            type="button"
            variant="outline"
            size="sm"
            onClick={() => navigate(-1)}
            className="rounded-xl text-xs font-semibold h-9 px-3.5 gap-1.5 border-border/70 hover:bg-muted cursor-pointer"
          >
            <Ic name="arrowRight" className="size-3.5 rtl:rotate-0 ltr:rotate-180" />
            <span>بازگشت</span>
          </Button>

          {/* Quick link to reference order */}
          {factor.service === 'custom_trip' && (factor.object_id || factor.order_id) && (
            <Button
              type="button"
              variant="outline"
              size="sm"
              onClick={() => navigate(`/custom-trip/orders/${factor.object_id || factor.order_id}`)}
              className="rounded-xl text-xs font-bold h-9 px-3.5 border-primary/40 text-primary hover:bg-primary/10 gap-1.5 cursor-pointer"
            >
              <Ic name="map" className="size-3.5" />
              <span>مشاهده برنامه سفر در بخش اختصاصی</span>
            </Button>
          )}

          <Button
            type="button"
            variant="outline"
            size="sm"
            onClick={() => navigate('/billing')}
            className="rounded-xl text-xs font-bold h-9 px-3.5 border-border/70 hover:bg-muted gap-1.5 cursor-pointer"
          >
            <Ic name="receipt" className="size-3.5" />
            <span>فهرست کل صورت‌حساب‌ها</span>
          </Button>
        </div>
      </div>

      {/* Expiration date banner if exists */}
      {factor.expiration_date && (
        <div className="bg-amber-500/10 border border-amber-500/30 rounded-2xl p-4 flex items-center justify-between text-xs">
          <span className="text-foreground/90 font-medium flex items-center gap-2">
            <Ic name="clock" className="size-4 text-amber-600 dark:text-amber-400 shrink-0" />
            <span>مهلت پرداخت فاکتور (تاریخ انقضای اعتبار):</span>
          </span>
          <span className="font-bold text-foreground font-mono">
            {formatDateByLanguage(factor.expiration_date, language as any)}
          </span>
        </div>
      )}

      {/* 2-Column Responsive Layout */}
      <div className="grid grid-cols-1 xl:grid-cols-12 gap-6 items-start">
        {/* Main Column (8 cols): Service Details, Travel Ticket, Bank Receipt */}
        <div className="xl:col-span-8 space-y-6">
          {/* Polymorphic Service Details Card */}
          <Card className="border-border/70 rounded-2xl shadow-xs overflow-hidden">
            <CardHeader className="py-3.5 px-5 border-b border-border/60 bg-muted/20 flex flex-row items-center justify-between">
              <CardTitle className="text-sm font-bold flex items-center gap-2 text-foreground">
                <Ic name="list" className="size-4.5 text-primary" />
                <span>ریز اقلام و مشخصات سفارش ({factor.service?.toUpperCase() || ''})</span>
              </CardTitle>
              <span className="text-xs text-muted-foreground font-mono">
                {formatDateTimeByLanguage(factor.created_at, language as any)}
              </span>
            </CardHeader>
            <CardContent className="p-5 text-xs sm:text-sm space-y-4">
              {/* 1. Custom Trip Service */}
              {factor.service === 'custom_trip' && (
                <div className="space-y-4">
                  {detail?.origin_city && (
                    <div className="flex items-center gap-2 pb-2.5 border-b border-border/50 text-xs">
                      <span className="text-muted-foreground font-medium">مبدأ حرکت زائر:</span>
                      <span className="font-bold text-foreground text-sm">{detail.origin_city}</span>
                    </div>
                  )}

                  {detail?.legs && Array.isArray(detail.legs) && detail.legs.length > 0 && (
                    <div className="space-y-2.5">
                      <div className="flex items-center justify-between">
                        <span className="font-bold text-xs text-foreground flex items-center gap-1.5">
                          <Ic name="navigation" className="size-4 text-primary" />
                          <span>مسیرها و هتل‌های تأییدشده در فاکتور:</span>
                        </span>
                        <span className="text-xs text-muted-foreground">
                          {toFa(detail.legs.length)} ایستگاه سفر
                        </span>
                      </div>

                      <div className="space-y-2.5">
                        {detail.legs.map((leg: any, idx: number) => {
                          const isReturnLeg = Boolean(leg.is_return)
                          const stay = detail.stays?.find((s: any) => s.city === leg.to_city)
                          return (
                            <div
                              key={idx}
                              className="p-3.5 rounded-xl border border-border/60 bg-muted/20 space-y-2"
                            >
                              <div className="flex flex-wrap items-center gap-2 text-xs">
                                <span className="size-6 rounded-lg bg-primary/10 text-primary font-bold flex items-center justify-center text-[11px] shrink-0">
                                  {toFa(idx + 1)}
                                </span>
                                <span className="font-bold text-foreground">{leg.from_city}</span>
                                <span className="text-muted-foreground">←</span>
                                <span className="font-bold text-primary">{leg.to_city}</span>
                                {isReturnLeg ? (
                                  <span className="text-primary font-semibold text-[11px] bg-primary/10 px-2 py-0.5 rounded-md">
                                    (بازگشت به شهر مبدأ — بدون هتل)
                                  </span>
                                ) : (
                                  stay?.nights && (
                                    <span className="text-muted-foreground text-[11px]">
                                      ({toFa(stay.nights)} شب اقامت)
                                    </span>
                                  )
                                )}
                              </div>
                              <div className="flex flex-wrap items-center gap-2 text-[11px]">
                                <span className="bg-card px-2 py-0.5 rounded-md border border-border/60 font-medium">
                                  ✈️ {leg.transport_method_display || (leg.transport_method === 1 ? 'هوایی' : leg.transport_method === 2 ? 'ریلی' : 'زمینی')}
                                </span>
                                {leg.departure_date && (
                                  <span className="bg-card px-2 py-0.5 rounded-md border border-border/60 text-muted-foreground">
                                    📅 {formatDualDate(leg.departure_date, (language as any) || 'fa', { withTime: true, time: leg.departure_time })}
                                  </span>
                                )}
                                {!isReturnLeg && stay?.hotel_name && (
                                  <span className="bg-card px-2 py-0.5 rounded-md border border-border/60 font-semibold text-foreground">
                                    🏨 {stay.hotel_name}
                                  </span>
                                )}
                              </div>
                            </div>
                          )
                        })}
                      </div>
                    </div>
                  )}

                  {detail?.admin_notes && (
                    <div className="bg-emerald-500/10 p-3 rounded-xl border border-emerald-500/25">
                      <span className="font-bold text-emerald-700 dark:text-emerald-300 block mb-0.5 text-xs">
                        توضیحات تأیید نهایی و صدور فاکتور:
                      </span>
                      <p className="text-xs text-foreground leading-relaxed">{detail.admin_notes}</p>
                    </div>
                  )}

                  {detail?.detail && (
                    <div className="bg-muted/30 p-3 rounded-xl border border-border/40">
                      <span className="text-muted-foreground block mb-1 text-xs">درخواست اولیه زائر:</span>
                      <p className="text-xs leading-relaxed text-foreground whitespace-pre-wrap">
                        {typeof detail.detail === 'string' ? detail.detail : JSON.stringify(detail.detail)}
                      </p>
                    </div>
                  )}
                </div>
              )}

              {/* 2. Tour Service */}
              {factor.service === 'tour' && (
                <div className="space-y-3">
                  <div className="flex items-center justify-between pb-2 border-b border-border/40">
                    <span className="text-muted-foreground">عنوان تور انتخابی:</span>
                    <span className="font-bold text-sm text-foreground">{detail?.tour || '—'}</span>
                  </div>

                  {detail?.passenger_data && (
                    <div className="space-y-2">
                      <p className="font-bold text-xs text-muted-foreground">اسامی و رده سنی مسافران:</p>
                      {(detail.passenger_data.adults?.count ?? 0) > 0 && (
                        <div className="bg-muted/40 p-2.5 rounded-xl border border-border/50 text-xs">
                          <span className="font-bold text-foreground">
                            بزرگسال ({toFa(detail.passenger_data.adults?.count)} نفر):
                          </span>
                          <span className="ms-2 text-muted-foreground">
                            {Array.isArray(detail.passenger_data.adults?.names)
                              ? detail.passenger_data.adults?.names.join('، ')
                              : String(detail.passenger_data.adults?.names || '')}
                          </span>
                        </div>
                      )}
                      {(detail.passenger_data.children?.count ?? 0) > 0 && (
                        <div className="bg-muted/40 p-2.5 rounded-xl border border-border/50 text-xs">
                          <span className="font-bold text-foreground">
                            کودک ({toFa(detail.passenger_data.children?.count)} نفر):
                          </span>
                          <span className="ms-2 text-muted-foreground">
                            {Array.isArray(detail.passenger_data.children?.names)
                              ? detail.passenger_data.children?.names.join('، ')
                              : String(detail.passenger_data.children?.names || '')}
                          </span>
                        </div>
                      )}
                      {(detail.passenger_data.infants?.count ?? 0) > 0 && (
                        <div className="bg-muted/40 p-2.5 rounded-xl border border-border/50 text-xs">
                          <span className="font-bold text-foreground">
                            نوزاد ({toFa(detail.passenger_data.infants?.count)} نفر):
                          </span>
                          <span className="ms-2 text-muted-foreground">
                            {Array.isArray(detail.passenger_data.infants?.names)
                              ? detail.passenger_data.infants?.names.join('، ')
                              : String(detail.passenger_data.infants?.names || '')}
                          </span>
                        </div>
                      )}
                    </div>
                  )}
                </div>
              )}

              {/* 3. Simcard Service */}
              {factor.service === 'simcard' && (
                <div className="space-y-3">
                  <div className="flex justify-between pb-2 border-b border-border/40">
                    <span className="text-muted-foreground">اپراتور و بسته:</span>
                    <span className="font-bold text-foreground">{detail?.title || 'سیم‌کارت بین‌المللی'}</span>
                  </div>
                  <div className="flex justify-between pb-2 border-b border-border/40">
                    <span className="text-muted-foreground">تعداد:</span>
                    <span className="font-mono font-bold text-foreground">{detail?.count || 1}</span>
                  </div>
                </div>
              )}

              {/* 4. Exchange (Tasrif) Service */}
              {factor.service === 'tasrif' && (
                <div className="space-y-3">
                  <div className="flex justify-between pb-2 border-b border-border/40">
                    <span className="text-muted-foreground">نوع تبدیل ارز:</span>
                    <span className="font-bold text-foreground">{detail?.exchange_type || 'صرافی و تبدیل ارز'}</span>
                  </div>
                </div>
              )}

              {/* 5. Shop Service */}
              {factor.service === 'shop' && (
                <div className="space-y-3">
                  <div className="flex justify-between pb-2 border-b border-border/40">
                    <span className="text-muted-foreground">محصول فروشگاه:</span>
                    <span className="font-bold text-foreground">{detail?.product_title || 'خرید محصول'}</span>
                  </div>
                </div>
              )}
            </CardContent>
          </Card>

          {/* Travel Ticket Management Card (Tour & Custom Trip) */}
          {isTourOrCustomTrip && (
            <Card className="border-border/70 rounded-2xl shadow-xs overflow-hidden">
              <CardHeader className="py-3.5 px-5 border-b border-border/60 flex flex-row items-center justify-between">
                <CardTitle className="text-sm font-bold flex items-center gap-2 text-foreground">
                  <div className="size-6 rounded-lg bg-primary/10 text-primary flex items-center justify-center shrink-0">
                    <Ic name="ticket" className="size-3.5" />
                  </div>
                  <span>{t('billing.ticketCardTitle')}</span>
                </CardTitle>
                {factor.ticket_file ? (
                  <span className="inline-flex items-center gap-1.5 px-2.5 py-0.5 rounded-full text-xs font-semibold bg-emerald-500/10 text-emerald-600 dark:text-emerald-400 border border-emerald-500/20">
                    <span className="size-1.5 rounded-full bg-emerald-500" />
                    {t('billing.ticketIssuedBadge')}
                  </span>
                ) : (
                  <span className="inline-flex items-center gap-1.5 px-2.5 py-0.5 rounded-full text-xs font-semibold bg-amber-500/10 text-amber-600 dark:text-amber-400 border border-amber-500/20">
                    <span className="size-1.5 rounded-full bg-amber-500" />
                    {t('billing.ticketPendingBadge')}
                  </span>
                )}
              </CardHeader>
              <CardContent className="p-5">
                <input
                  ref={ticketFileInputRef}
                  type="file"
                  accept=".pdf,image/*,.doc,.docx"
                  className="hidden"
                  onChange={(e) => {
                    const file = e.target.files?.[0]
                    if (file) handleUploadTicketFile(file)
                  }}
                />
                {factor.ticket_file ? (
                  <div className="flex flex-col sm:flex-row items-start sm:items-center justify-between gap-4 p-4 rounded-xl border border-emerald-500/30 bg-emerald-500/5">
                    <div className="flex items-center gap-3">
                      <div className="size-10 rounded-xl bg-emerald-500/15 text-emerald-600 dark:text-emerald-400 flex items-center justify-center shrink-0">
                        <Ic name="file" className="size-5" />
                      </div>
                      <div className="space-y-0.5">
                        <p className="text-xs font-bold text-foreground">
                          {t('billing.ticketIssuedTitle')}
                        </p>
                        <p
                          className="text-[11px] text-muted-foreground font-mono truncate max-w-[280px] sm:max-w-md"
                          dir="ltr"
                        >
                          {factor.ticket_file.split('/').pop() || factor.ticket_file}
                        </p>
                      </div>
                    </div>
                    <div className="flex flex-wrap items-center gap-2 w-full sm:w-auto">
                      <Button
                        variant="outline"
                        size="sm"
                        className="h-8 gap-1.5 text-xs rounded-xl border-border-soft hover:bg-muted"
                        onClick={() => window.open(resolveMediaUrl(factor.ticket_file!), '_blank')}
                      >
                        <Ic name="download" className="size-3.5 text-primary" />
                        <span>{t('billing.viewTicketBtn')}</span>
                      </Button>
                      <Button
                        variant="outline"
                        size="sm"
                        disabled={isUploadingTicket}
                        className="h-8 gap-1.5 text-xs rounded-xl border-border-soft hover:bg-muted"
                        onClick={() => ticketFileInputRef.current?.click()}
                      >
                        <Ic name="upload" className="size-3.5" />
                        <span>
                          {isUploadingTicket ? t('billing.ticketUploading') : t('billing.replaceTicketBtn')}
                        </span>
                      </Button>
                      <Button
                        variant="outline"
                        size="sm"
                        disabled={isDeletingTicket || factor.status === 'approved'}
                        title={
                          factor.status === 'approved'
                            ? t('billing.cannotDeleteTicketWhenApproved')
                            : undefined
                        }
                        className={cn(
                          'h-8 gap-1.5 text-xs rounded-xl border-destructive/30 text-destructive hover:bg-destructive/10',
                          factor.status === 'approved' && 'opacity-50 cursor-not-allowed hover:bg-transparent'
                        )}
                        onClick={handleDeleteTicket}
                      >
                        <Ic name="trash" className="size-3.5" />
                        <span>
                          {isDeletingTicket ? t('billing.ticketDeleting') : t('billing.deleteTicketBtn')}
                        </span>
                      </Button>
                    </div>
                  </div>
                ) : (
                  <div
                    onDragOver={(e) => {
                      e.preventDefault()
                      setIsDraggingTicket(true)
                    }}
                    onDragLeave={() => setIsDraggingTicket(false)}
                    onDrop={(e) => {
                      e.preventDefault()
                      setIsDraggingTicket(false)
                      const file = e.dataTransfer.files?.[0]
                      if (file) handleUploadTicketFile(file)
                    }}
                    className={`flex flex-col items-center justify-center p-6 rounded-xl border border-dashed transition-all duration-200 text-center space-y-3 ${
                      isDraggingTicket
                        ? 'border-primary bg-primary/10 ring-2 ring-primary/20'
                        : 'border-border/80 bg-muted/20 hover:border-primary/50 hover:bg-muted/30'
                    }`}
                  >
                    <div className="size-12 rounded-2xl bg-primary/10 text-primary flex items-center justify-center shadow-xs">
                      <Ic name="ticket" className="size-6" />
                    </div>
                    <div className="space-y-1 max-w-md">
                      <p className="text-xs font-bold text-foreground">
                        {t('billing.ticketUploadPrompt')}
                      </p>
                      <p className="text-[11px] text-muted-foreground leading-relaxed">
                        {t('billing.ticketDragDropPrompt')}
                      </p>
                      <p className="text-[10px] text-muted-foreground/70 font-medium">
                        {t('billing.ticketSupportedFormats')}
                      </p>
                    </div>
                    <Button
                      variant="default"
                      size="sm"
                      disabled={isUploadingTicket}
                      isLoading={isUploadingTicket}
                      loadingText={t('billing.ticketUploading')}
                      className="rounded-xl h-8 px-4 text-xs font-bold gap-1.5 bg-primary text-primary-foreground hover:brightness-105 shadow-xs"
                      onClick={() => ticketFileInputRef.current?.click()}
                    >
                      <Ic name="upload" className="size-3.5" />
                      <span>{t('billing.uploadTicketBtn')}</span>
                    </Button>
                    {!isApproved && (
                      <div className="flex items-center gap-2 p-2.5 rounded-xl border border-amber-500/20 bg-amber-500/10 text-[11px] text-amber-700 dark:text-amber-400 font-medium max-w-md text-start">
                        <Ic name="ticket" className="size-4 text-amber-500 shrink-0" />
                        <span>{t('billing.ticketAutoApproveNotice')}</span>
                      </div>
                    )}
                  </div>
                )}
              </CardContent>
            </Card>
          )}

          {/* Bank Transaction Receipt Card */}
          <Card className="border-border/70 rounded-2xl shadow-xs overflow-hidden">
            <CardHeader className="py-3.5 px-5 border-b border-border/60">
              <CardTitle className="text-sm font-bold flex items-center gap-2 text-foreground">
                <Ic name="receipt" className="size-4.5 text-primary" />
                <span>فیش واریزی و رسید پرداخت بانکی</span>
              </CardTitle>
            </CardHeader>
            <CardContent className="p-5">
              {factor.transaction_receipt ? (
                <div className="flex flex-col sm:flex-row items-center gap-4 bg-muted/20 p-4 rounded-xl border border-border/50">
                  <div
                    onClick={() => setReceiptLightboxOpen(true)}
                    className="relative cursor-pointer group overflow-hidden rounded-xl border border-border/60 size-28 sm:size-32 shrink-0 bg-muted/40 shadow-xs flex items-center justify-center hover:border-primary/50 transition-colors"
                    title="مشاهده در اندازه بزرگ"
                  >
                    <img
                      src={resolveMediaUrl(factor.transaction_receipt)}
                      alt={`فیش صورت‌حساب #${factor.id}`}
                      className="size-full object-cover group-hover:scale-105 transition-transform"
                      onError={(e) => {
                        const el = e.currentTarget
                        if (!el.dataset.fallbackApplied && factor.transaction_receipt) {
                          el.dataset.fallbackApplied = 'true'
                          const fallback = getMediaFallbackUrl(factor.transaction_receipt)
                          if (fallback && el.src !== fallback) {
                            el.src = fallback
                            return
                          }
                        }
                        el.style.display = 'none'
                        setReceiptError(true)
                        const fallback = el.nextElementSibling as HTMLElement
                        if (fallback) fallback.style.display = 'flex'
                      }}
                    />
                    <div
                      style={{ display: 'none' }}
                      className="size-full flex flex-col items-center justify-center text-muted-foreground p-2 text-center"
                    >
                      <Ic name="alert" className="size-6 text-amber-500 mb-1" />
                      <span className="text-[10px] font-semibold text-amber-600 dark:text-amber-400">
                        عدم لود تصویر
                      </span>
                    </div>
                    <div className="absolute inset-0 bg-black/40 opacity-0 group-hover:opacity-100 flex items-center justify-center text-white transition-opacity text-xs font-medium">
                      <Ic name="eye" className="size-5" />
                    </div>
                  </div>

                  <div className="space-y-2 text-xs flex-1">
                    {receiptError ? (
                      <>
                        <p className="font-bold text-destructive flex items-center gap-1.5">
                          <Ic name="alert" className="size-3.5" />
                          <span>فایل تصویر رسید در سرور یافت نشد یا آسیب دیده است</span>
                        </p>
                        <p className="text-muted-foreground text-[11px] leading-relaxed">
                          آدرس فیش در پایگاه داده ثبت شده، اما فایل فیزیکی در سرور در دسترس نیست. جهت
                          جلوگیری از سردرگمی می‌توانید فیش نامعتبر را پاکسازی کنید.
                        </p>
                      </>
                    ) : (
                      <>
                        <p className="font-bold text-foreground">فیش بانکی توسط مشتری در اپلیکیشن آپلود شده است.</p>
                        <p className="text-muted-foreground text-[11px] leading-relaxed">
                          جهت بررسی صحت اطلاعات و انطباق با واریز حساب، می‌توانید تصویر فیش را در سایز
                          کامل باز کرده و جزئیات آن را بررسی نمایید.
                        </p>
                      </>
                    )}

                    <div className="flex flex-wrap items-center gap-2 pt-1">
                      <Button
                        variant="outline"
                        size="sm"
                        className="h-8 gap-1.5 text-xs rounded-xl border-border-soft hover:bg-muted"
                        onClick={() => setReceiptLightboxOpen(true)}
                      >
                        <Ic name="eye" className="size-3.5 text-primary" />
                        <span>مشاهده در اندازه بزرگ</span>
                      </Button>

                      <Button
                        variant="outline"
                        size="sm"
                        disabled={isClearingReceipt}
                        className="h-8 gap-1.5 text-xs rounded-xl border-destructive/30 text-destructive hover:bg-destructive/10"
                        onClick={handleClearReceipt}
                      >
                        <Ic name="trash" className="size-3.5" />
                        <span>
                          {isClearingReceipt
                            ? 'در حال پاکسازی...'
                            : receiptError
                              ? 'پاکسازی فیش نامعتبر'
                              : 'حذف فیش'}
                        </span>
                      </Button>
                    </div>
                  </div>
                </div>
              ) : (
                <div className="flex items-center gap-3.5 p-4 rounded-xl border border-amber-500/30 bg-amber-500/10 text-foreground">
                  <div className="size-9 rounded-xl bg-amber-500/20 text-amber-700 dark:text-amber-400 flex items-center justify-center shrink-0">
                    <Ic name="alert" className="size-5" />
                  </div>
                  <div className="space-y-0.5">
                    <p className="text-xs font-bold text-amber-950 dark:text-amber-200">
                      عدم بارگذاری فیش واریزی
                    </p>
                    <p className="text-xs text-foreground/80 font-medium leading-relaxed">
                      هنوز تصویر فیش واریزی توسط مشتری در سامانه بارگذاری نشده است (صورت‌حساب در انتظار
                      پرداخت می‌باشد).
                    </p>
                  </div>
                </div>
              )}
            </CardContent>
          </Card>
        </div>

        {/* Sidebar Column (4 cols): User Dossier, Financial Pricing, Status Management */}
        <div className="xl:col-span-4 space-y-6">
          {/* Customer Dossier Card */}
          <Card className="border-border/70 rounded-2xl shadow-xs overflow-hidden">
            <CardHeader className="py-3.5 px-5 border-b border-border/60">
              <CardTitle className="text-sm font-bold flex items-center gap-2 text-foreground">
                <Ic name="user" className="size-4.5 text-primary" />
                <span>مشخصات خریدار / مسافر</span>
              </CardTitle>
            </CardHeader>
            <CardContent className="p-5 space-y-4">
              <div className="flex items-center gap-3">
                <Avatar className="size-11 rounded-xl bg-primary/10 border border-primary/20 flex items-center justify-center font-bold text-primary text-sm">
                  {user?.fullname ? user.fullname.slice(0, 1) : <Ic name="user" className="size-5" />}
                </Avatar>
                <div className="min-w-0 flex-1">
                  <p className="font-bold text-sm text-foreground truncate">
                    {user?.fullname || 'نام ثبت نشده'}
                  </p>
                  <p className="text-xs text-muted-foreground truncate font-mono dir-ltr text-start">
                    {user?.email || '—'}
                  </p>
                </div>
              </div>

              <div className="pt-2 border-t border-border/50 space-y-2 text-xs">
                <div className="flex justify-between items-center">
                  <span className="text-muted-foreground">شماره تماس:</span>
                  <span className="font-mono dir-ltr font-semibold text-foreground">
                    {user?.phone_number || '—'}
                  </span>
                </div>
                <div className="flex justify-between items-center">
                  <span className="text-muted-foreground">شناسه کاربری:</span>
                  <span className="font-mono font-medium">{user?.id ?? '—'}</span>
                </div>
              </div>

              {user?.id && (
                <Button
                  type="button"
                  variant="outline"
                  size="sm"
                  onClick={() => navigate(`/users/${user.id}`)}
                  className="w-full rounded-xl text-xs font-semibold h-8.5 gap-1.5 border-border/70 hover:bg-muted cursor-pointer"
                >
                  <Ic name="externalLink" className="size-3.5" />
                  <span>مشاهده پرونده کامل کاربر</span>
                </Button>
              )}
            </CardContent>
          </Card>

          {/* Financial Dossier Card */}
          <Card className="border-border/70 rounded-2xl shadow-xs overflow-hidden">
            <CardHeader className="py-3.5 px-5 border-b border-border/60">
              <CardTitle className="text-sm font-bold flex items-center gap-2 text-foreground">
                <Ic name="creditCard" className="size-4.5 text-primary" />
                <span>مشخصات مالی و پرداخت</span>
              </CardTitle>
            </CardHeader>
            <CardContent className="p-5 space-y-3.5">
              <div className="flex items-center justify-between pb-3 border-b border-border/50">
                <span className="text-xs text-muted-foreground font-medium">مبلغ کل فاکتور:</span>
                <span className="text-xl font-black text-primary font-mono">
                  ${Number(factor.amount).toLocaleString()}
                </span>
              </div>

              {factor.card_number && (
                <div className="bg-muted/30 p-2.5 rounded-xl border border-border/50 flex items-center justify-between text-xs">
                  <div className="flex flex-col">
                    <span className="text-[10px] text-muted-foreground">شماره کارت بانکی مقصد:</span>
                    <span className="font-mono font-bold tracking-wider dir-ltr text-foreground">
                      {factor.card_number}
                    </span>
                  </div>
                  <Button
                    variant="ghost"
                    size="icon"
                    className="size-7 text-muted-foreground hover:text-foreground"
                    onClick={() => handleCopyCard(factor.card_number!)}
                    title="کپی شماره کارت"
                  >
                    <Ic name={copiedCard ? 'check' : 'clipboardCheck'} className="size-3.5" />
                  </Button>
                </div>
              )}

              <div className="space-y-2 text-xs">
                {factor.factor_number && (
                  <div className="flex justify-between items-center">
                    <span className="text-muted-foreground">{t('billing.factorNumber')}:</span>
                    <div className="flex items-center gap-1.5">
                      <span className="font-mono font-bold text-primary bg-primary/10 px-2 py-0.5 rounded-md">
                        #{factor.factor_number}
                      </span>
                      <Button
                        variant="ghost"
                        size="icon"
                        className="size-6 text-muted-foreground hover:text-foreground"
                        onClick={() => handleCopyFactorNumber(factor.factor_number!)}
                        title="کپی شماره فاکتور"
                      >
                        <Ic name={copiedFactorNumber ? 'check' : 'clipboardCheck'} className="size-3" />
                      </Button>
                    </div>
                  </div>
                )}
                <div className="flex justify-between">
                  <span className="text-muted-foreground">{t('billing.id')}:</span>
                  <span className="font-mono text-muted-foreground">#{factor.id}</span>
                </div>
                <div className="flex justify-between">
                  <span className="text-muted-foreground">شناسه سفارش مرجع:</span>
                  <span className="font-mono font-medium">
                    {factor.order_id || factor.object_id}
                  </span>
                </div>
                {factor.description && (
                  <div className="flex justify-between gap-2 pt-1 border-t border-border/40">
                    <span className="text-muted-foreground shrink-0">توضیحات:</span>
                    <span className="text-foreground text-end">{factor.description}</span>
                  </div>
                )}
              </div>
            </CardContent>
          </Card>

          {/* Status & Review Controller Card */}
          <Card className="border-border/70 rounded-2xl shadow-xs overflow-hidden">
            <CardHeader className="py-3.5 px-5 border-b border-border/60">
              <CardTitle className="text-sm font-bold flex items-center gap-2 text-foreground">
                <Ic name="sliders" className="size-4.5 text-primary" />
                <span>مدیریت وضعیت فاکتور</span>
              </CardTitle>
            </CardHeader>
            <CardContent className="p-5 space-y-4">
              <div>
                <label className="text-xs font-bold text-foreground block mb-1.5">
                  تغییر وضعیت فاکتور:
                </label>
                <Select
                  value={selectedStatus}
                  onValueChange={(val) => {
                    const newStatus = val as FactorStatus
                    setSelectedStatus(newStatus)
                    setHasChanges(newStatus !== factor.status)
                  }}
                >
                  <SelectTrigger className="h-10 px-3.5 text-xs font-black rounded-xl border border-border/80 bg-background shadow-2xs hover:border-primary/50 transition-all">
                    <SelectValue placeholder="انتخاب وضعیت...">
                      {(() => {
                        const curOpt = STATUS_OPTIONS.find((o) => o.value === selectedStatus)
                        if (!curOpt) return selectedStatus
                        return (
                          <div className="flex items-center gap-2">
                            <span className={cn('size-2.5 rounded-full shrink-0', curOpt.dotClass)} />
                            <span className="truncate font-black">{curOpt.label}</span>
                          </div>
                        )
                      })()}
                    </SelectValue>
                  </SelectTrigger>
                  <SelectContent className="rounded-xl border-border-soft bg-card shadow-2xl p-1 z-50">
                    {STATUS_OPTIONS.map((opt) => (
                      <SelectItem
                        key={opt.value}
                        value={opt.value}
                        className="rounded-lg text-xs font-bold py-2.5 px-3 gap-2 cursor-pointer hover:bg-muted/70"
                      >
                        <div className="flex items-center gap-2.5">
                          <span className={cn('size-2.5 rounded-full shrink-0', opt.dotClass)} />
                          <span className="font-bold">{opt.label}</span>
                        </div>
                      </SelectItem>
                    ))}
                  </SelectContent>
                </Select>
              </div>

              {/* Warning if approved without ticket */}
              {isApprovedSelectedWithoutTicket && (
                <div className="bg-amber-500/10 border border-amber-500/30 rounded-xl p-3 flex items-start gap-2.5 text-xs text-amber-700 dark:text-amber-400">
                  <Ic name="alert" className="size-4 shrink-0 mt-0.5 text-amber-500" />
                  <p className="leading-relaxed">
                    {t('billing.ticketRequiredForApprovedDesc')}
                  </p>
                </div>
              )}

              {/* Rejection reason textarea if rejected */}
              {selectedStatus === 'rejected' && (
                <div className="bg-rose-500/10 border border-rose-500/25 rounded-xl p-3 space-y-2">
                  <div className="flex items-center justify-between">
                    <span className="font-bold text-xs text-rose-700 dark:text-rose-300">
                      دلیل رد صورت‌حساب (الزامی):
                    </span>
                    <span className="text-[10px] text-rose-600/80">نمایش به زائر</span>
                  </div>
                  <Textarea
                    rows={3}
                    value={rejectReason}
                    onChange={(e) => {
                      setRejectReason(e.target.value)
                      setHasChanges(true)
                    }}
                    placeholder="علت رد فاکتور را حتماً وارد نمایید (مثال: فیش ناخوانا است، مبلغ مغایرت دارد و...)"
                    className={cn(
                      'text-xs bg-background/90 rounded-xl resize-none min-h-[70px]',
                      !rejectReason.trim()
                        ? 'border-rose-500/60 focus:ring-rose-500'
                        : 'border-border/60'
                    )}
                  />
                </div>
              )}

              {/* Save changes button */}
              <Button
                type="button"
                variant="default"
                disabled={
                  isSaving ||
                  (selectedStatus === 'rejected' && !rejectReason.trim()) ||
                  isApprovedSelectedWithoutTicket
                }
                isLoading={isSaving}
                loadingText="در حال ذخیره..."
                onClick={handleSaveStatus}
                className={cn(
                  'w-full rounded-xl text-xs font-bold h-10 shadow-xs gap-2 transition-all',
                  hasChanges
                    ? 'bg-primary text-primary-foreground hover:brightness-110 ring-2 ring-primary/30'
                    : 'bg-primary text-primary-foreground hover:brightness-105'
                )}
              >
                <Ic name="check" className="size-4" />
                <span>
                  {hasChanges
                    ? selectedStatus === 'approved'
                      ? t('billing.confirmAndSave')
                      : t('billing.saveStatusChanges')
                    : factor.status === 'approved'
                      ? t('billing.reSubmitStatus')
                      : t('billing.submitStatus')}
                </span>
              </Button>

              {/* Cancel Invoice button */}
              {factor.status === 'awaiting_payment' && !factor.transaction_receipt && (
                <Button
                  type="button"
                  variant="outline"
                  disabled={isSaving}
                  onClick={handleCancelFactor}
                  className="w-full rounded-xl text-xs font-bold h-9 border-rose-500/40 text-rose-600 dark:text-rose-400 hover:bg-rose-500/10 gap-1.5 cursor-pointer"
                >
                  <Ic name="x" className="size-3.5" />
                  <span>{t('billing.cancelInvoice')}</span>
                </Button>
              )}
            </CardContent>
          </Card>
        </div>
      </div>

      {/* Lightbox Dialog */}
      <ReceiptLightboxDialog
        factor={factor}
        open={receiptLightboxOpen}
        onClose={() => setReceiptLightboxOpen(false)}
        onClearReceipt={handleClearReceipt}
      />
    </div>
  )
}