"use client";

import React, { useEffect, useState } from "react";
import {
  Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription,
} from "@/components/ui/dialog";
import { Input } from "@/components/ui/input";
import { Button } from "@/components/ui/button";
import { Loader2 } from "lucide-react";
import { apiClient } from "@/lib/api/client";
import { toast } from "sonner";

export interface CustomerRow {
  objid?: string | number;
  id?: string | number;
  customer_name?: string;
  contact_person?: string;
  business_number?: string;
  contact_phone?: string;
  address?: string;
  customer_code?: string;
  [key: string]: any;
}

/**
 * customer_mng.id (정수) → contract_mgmt.customer_objid 'C_xxxxxxxxxx' (10자리 padded)
 * 영업관리(contract_mgmt) 테이블이 사용하는 포맷.
 */
export const toContractCustomerObjid = (id: number | string | null | undefined) => {
  if (id === null || id === undefined || id === "") return "";
  return `C_${String(id).padStart(10, "0")}`;
};

interface CustomerSearchDialogProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  onSelect: (customer: CustomerRow) => void;
  title?: string;
  description?: string;
}

export function CustomerSearchDialog({
  open, onOpenChange, onSelect,
  title = "거래처 검색",
  description = "거래처를 검색하여 선택하세요.",
}: CustomerSearchDialogProps) {
  const [keyword, setKeyword] = useState("");
  const [results, setResults] = useState<CustomerRow[]>([]);
  const [loading, setLoading] = useState(false);

  useEffect(() => {
    if (open) {
      setKeyword("");
      setResults([]);
      void search("");
    }
  }, [open]);

  const search = async (kw?: string) => {
    const k = kw ?? keyword;
    setLoading(true);
    try {
      const filters: any[] = [];
      if (k) filters.push({ columnName: "customer_name", operator: "contains", value: k });
      const res = await apiClient.post("/table-management/tables/customer_mng/data", {
        page: 1, size: 50,
        dataFilter: filters.length > 0 ? { enabled: true, filters } : undefined,
        autoFilter: true,
      });
      const resData = res.data?.data;
      setResults(resData?.data || resData?.rows || []);
    } catch {
      toast.error("거래처 조회 실패");
    } finally {
      setLoading(false);
    }
  };

  const handleSelect = (cust: CustomerRow) => {
    onSelect(cust);
    onOpenChange(false);
  };

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="flex max-h-[80vh] max-w-2xl flex-col overflow-hidden">
        <DialogHeader>
          <DialogTitle>{title}</DialogTitle>
          <DialogDescription>{description}</DialogDescription>
        </DialogHeader>
        <div className="flex gap-2">
          <Input
            placeholder="거래처명 검색"
            value={keyword}
            onChange={(e) => setKeyword(e.target.value)}
            onKeyDown={(e) => e.key === "Enter" && search()}
            className="text-sm"
          />
          <Button onClick={() => search()} disabled={loading} className="shrink-0 gap-1">
            {loading ? <Loader2 className="h-4 w-4 animate-spin" /> : "검색"}
          </Button>
        </div>
        <div className="flex-1 overflow-auto rounded border">
          <table className="w-full text-xs">
            <thead className="sticky top-0 bg-gray-50">
              <tr>
                <th className="px-3 py-2 text-left">거래처명</th>
                <th className="px-3 py-2 text-left">대표자</th>
                <th className="px-3 py-2 text-left">사업자번호</th>
                <th className="px-3 py-2 text-left">연락처</th>
                <th className="w-16 px-2 py-2 text-center">선택</th>
              </tr>
            </thead>
            <tbody>
              {results.length === 0 ? (
                <tr>
                  <td colSpan={5} className="px-4 py-8 text-center text-gray-400">
                    {loading ? "검색 중..." : "검색 결과가 없습니다."}
                  </td>
                </tr>
              ) : results.map((row, i) => (
                <tr
                  key={row.objid ?? row.id ?? i}
                  className="cursor-pointer border-t hover:bg-blue-50"
                  onClick={() => handleSelect(row)}
                >
                  <td className="px-3 py-2 font-medium">{row.customer_name || "-"}</td>
                  <td className="px-3 py-2">{row.contact_person || "-"}</td>
                  <td className="px-3 py-2">{row.business_number || "-"}</td>
                  <td className="px-3 py-2">{row.contact_phone || "-"}</td>
                  <td className="px-2 py-2 text-center">
                    <Button
                      size="sm"
                      variant="outline"
                      className="h-6 text-xs"
                      onClick={(e) => { e.stopPropagation(); handleSelect(row); }}
                    >선택</Button>
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
        <DialogFooter>
          <Button variant="outline" onClick={() => onOpenChange(false)}>취소</Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}