"use client"

import { useState, useMemo } from "react"
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table"
import { Input } from "@/components/ui/input"
import { Button } from "@/components/ui/button"
import { PedidoDetailModal } from "@/components/pedido-detail-modal"
import { Search, Download } from "lucide-react"
import type { Pedido } from "@/lib/supabase"

const statusColors: Record<string, string> = {
  PENDING: "bg-yellow-100 text-yellow-800",
  RECEIVED: "bg-green-100 text-green-800",
  CONFIRMED: "bg-green-100 text-green-800",
  OVERDUE: "bg-red-100 text-red-800",
  REFUNDED: "bg-gray-100 text-gray-800",
  CANCELLED: "bg-red-100 text-red-800",
}

const statusLabel: Record<string, string> = {
  PENDING: "Pendente",
  RECEIVED: "Pago",
  CONFIRMED: "Confirmado",
  OVERDUE: "Vencido",
  REFUNDED: "Estornado",
  CANCELLED: "Cancelado",
}

const ALL_STATUSES = ["PENDING", "RECEIVED", "CONFIRMED", "OVERDUE", "REFUNDED", "CANCELLED"]

type PedidoRich = Pedido & {
  clientes?: { nome: string; email: string; telefone?: string | null; cpf_cnpj?: string | null } | null
  produtos?: { nome: string; tipo: string; validade?: string; midia?: string | null } | null
  asaas_invoice_url?: string | null
  pix_copia_cola?: string | null
  pix_qrcode_url?: string | null
  paid_at?: string | null
}

export function TransactionTable({ transactions }: { transactions: PedidoRich[] }) {
  const [busca, setBusca] = useState("")
  const [filtroStatus, setFiltroStatus] = useState<string | null>(null)
  const [pedidoSelecionado, setPedidoSelecionado] = useState<PedidoRich | null>(null)

  const fmt = (v: number) =>
    (v / 100).toLocaleString("pt-BR", { style: "currency", currency: "BRL" })

  const filtrados = useMemo(() => {
    return transactions.filter((t) => {
      const matchStatus = !filtroStatus || t.status === filtroStatus
      const q = busca.toLowerCase()
      const matchBusca =
        !q ||
        t.id.toLowerCase().includes(q) ||
        (t.clientes?.nome ?? "").toLowerCase().includes(q) ||
        (t.clientes?.email ?? "").toLowerCase().includes(q) ||
        (t.produtos?.nome ?? "").toLowerCase().includes(q)
      return matchStatus && matchBusca
    })
  }, [transactions, busca, filtroStatus])

  function exportCSV() {
    const header = ["ID", "Cliente", "Email", "Produto", "Valor", "Método", "Status", "Data"]
    const rows = filtrados.map((t) => [
      t.id,
      t.clientes?.nome ?? "",
      t.clientes?.email ?? "",
      t.produtos?.nome ?? "",
      (t.valor_centavos / 100).toFixed(2),
      t.metodo_pagamento ?? "",
      t.status,
      new Date(t.created_at).toLocaleDateString("pt-BR"),
    ])
    const csv = [header, ...rows].map((r) => r.map((c) => `"${c}"`).join(",")).join("\n")
    const blob = new Blob([csv], { type: "text/csv;charset=utf-8;" })
    const url = URL.createObjectURL(blob)
    const a = document.createElement("a")
    a.href = url
    a.download = `pedidos-${new Date().toISOString().slice(0, 10)}.csv`
    a.click()
    URL.revokeObjectURL(url)
  }

  if (transactions.length === 0) {
    return (
      <div className="rounded-md border p-8 text-center text-muted-foreground">
        Nenhum pedido encontrado.
      </div>
    )
  }

  return (
    <div className="space-y-3">
      {/* Toolbar */}
      <div className="flex flex-wrap gap-2 items-center justify-between">
        <div className="flex gap-2 flex-wrap">
          <div className="relative">
            <Search className="absolute left-2.5 top-2.5 h-4 w-4 text-muted-foreground" />
            <Input
              placeholder="Buscar cliente, produto, ID..."
              className="pl-8 h-9 w-64"
              value={busca}
              onChange={(e) => setBusca(e.target.value)}
            />
          </div>
          <div className="flex gap-1 flex-wrap">
            <Button
              size="sm"
              variant={filtroStatus === null ? "default" : "outline"}
              className="h-9 text-xs"
              onClick={() => setFiltroStatus(null)}
            >
              Todos
            </Button>
            {ALL_STATUSES.map((s) => (
              <Button
                key={s}
                size="sm"
                variant={filtroStatus === s ? "default" : "outline"}
                className="h-9 text-xs"
                onClick={() => setFiltroStatus(filtroStatus === s ? null : s)}
              >
                {statusLabel[s]}
              </Button>
            ))}
          </div>
        </div>
        <Button size="sm" variant="outline" className="h-9" onClick={exportCSV}>
          <Download className="mr-2 h-4 w-4" />
          Exportar CSV
        </Button>
      </div>

      {/* Contagem */}
      <p className="text-xs text-muted-foreground">
        {filtrados.length} pedido{filtrados.length !== 1 ? "s" : ""} encontrado{filtrados.length !== 1 ? "s" : ""}
      </p>

      {/* Tabela */}
      <div className="rounded-md border">
        <Table>
          <TableHeader>
            <TableRow>
              <TableHead>ID</TableHead>
              <TableHead>Cliente</TableHead>
              <TableHead>Produto</TableHead>
              <TableHead>Valor</TableHead>
              <TableHead>Método</TableHead>
              <TableHead>Status</TableHead>
              <TableHead>Data</TableHead>
            </TableRow>
          </TableHeader>
          <TableBody>
            {filtrados.length === 0 ? (
              <TableRow>
                <TableCell colSpan={7} className="text-center text-muted-foreground py-8">
                  Nenhum pedido encontrado com esses filtros.
                </TableCell>
              </TableRow>
            ) : (
              filtrados.map((t) => (
                <TableRow
                  key={t.id}
                  className="cursor-pointer hover:bg-muted/50"
                  onClick={() => setPedidoSelecionado(t)}
                >
                  <TableCell className="font-mono text-xs">{t.id.slice(0, 8).toUpperCase()}</TableCell>
                  <TableCell className="max-w-[120px] truncate">{t.clientes?.nome ?? "—"}</TableCell>
                  <TableCell className="max-w-[140px] truncate">{t.produtos?.nome ?? "—"}</TableCell>
                  <TableCell className="font-medium">{fmt(t.valor_centavos)}</TableCell>
                  <TableCell className="text-xs">{t.metodo_pagamento ?? "—"}</TableCell>
                  <TableCell>
                    <span className={`px-2 py-0.5 rounded-full text-xs font-medium ${statusColors[t.status] ?? ""}`}>
                      {statusLabel[t.status] ?? t.status}
                    </span>
                  </TableCell>
                  <TableCell className="text-sm text-muted-foreground whitespace-nowrap">
                    {new Date(t.created_at).toLocaleDateString("pt-BR")}
                  </TableCell>
                </TableRow>
              ))
            )}
          </TableBody>
        </Table>
      </div>

      {/* Modal detalhe */}
      {pedidoSelecionado && (
        <PedidoDetailModal
          pedido={pedidoSelecionado as Parameters<typeof PedidoDetailModal>[0]["pedido"]}
          open={!!pedidoSelecionado}
          onClose={() => setPedidoSelecionado(null)}
        />
      )}
    </div>
  )
}