/**
 * 작업 이력 위젯
 * - 작업 이력 목록 표시
 * - 필터링 기능
 * - 상태별 색상 구분
 * - 쿼리 결과 기반 데이터 표시
 */

"use client";

import { useState, useEffect } from "react";
import { DashboardElement } from "@/components/admin/dashboard/types";
import { getApiUrl } from "@/lib/utils/apiUrl";
import { WORK_TYPE_LABELS, WORK_STATUS_LABELS, WORK_STATUS_COLORS, WorkType, WorkStatus } from "@/types/workHistory";

interface WorkHistoryWidgetProps {
  element: DashboardElement;
  refreshInterval?: number;
}

export default function WorkHistoryWidget({ element, refreshInterval = 60000 }: WorkHistoryWidgetProps) {
  const [data, setData] = useState<any[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [selectedType, setSelectedType] = useState<WorkType | "all">("all");
  const [selectedStatus, setSelectedStatus] = useState<WorkStatus | "all">("all");

  // 데이터 로드
  const loadData = async () => {
    try {
      setIsLoading(true);
      setError(null);

      // 쿼리가 설정되어 있으면 쿼리 실행
      if (element.dataSource?.query) {
        const token = localStorage.getItem("authToken");
        const response = await fetch(getApiUrl("/api/dashboards/execute-query"), {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
            Authorization: `Bearer ${token}`,
          },
          body: JSON.stringify({
            query: element.dataSource.query,
            connectionType: element.dataSource.connectionType || "current",
            connectionId: element.dataSource.connectionId,
          }),
        });

        if (!response.ok) throw new Error("데이터 로딩 실패");

        const result = await response.json();

        if (result.success && result.data?.rows) {
          setData(result.data.rows);
        } else {
          throw new Error(result.message || "데이터 로드 실패");
        }
      } else {
        // 쿼리 미설정 시 안내 메시지
        setError("쿼리를 설정해주세요");
        setData([]);
      }
    } catch (err) {
      console.error("작업 이력 로드 실패:", err);
      setError(err instanceof Error ? err.message : "데이터를 불러올 수 없습니다");
    } finally {
      setIsLoading(false);
    }
  };

  useEffect(() => {
    loadData();
    const interval = setInterval(loadData, refreshInterval);
    return () => clearInterval(interval);
  }, [selectedType, selectedStatus, refreshInterval, element.dataSource]);

  if (isLoading && data.length === 0) {
    return (
      <div className="flex h-full items-center justify-center bg-muted">
        <div className="text-center">
          <div className="mx-auto h-8 w-8 animate-spin rounded-full border-4 border-primary border-t-transparent" />
          <div className="mt-2 text-sm text-foreground">로딩 중...</div>
        </div>
      </div>
    );
  }

  if (error) {
    return (
      <div className="flex h-full items-center justify-center bg-muted p-4">
        <div className="text-center">
          <div className="mb-2 text-4xl">⚠️</div>
          <div className="text-sm font-medium text-foreground">{error}</div>
          {!element.dataSource?.query && <div className="mt-2 text-xs text-muted-foreground">쿼리를 설정하세요</div>}
          <button
            onClick={loadData}
            className="mt-3 rounded-lg bg-primary px-4 py-2 text-sm text-primary-foreground hover:bg-primary/90"
          >
            다시 시도
          </button>
        </div>
      </div>
    );
  }

  return (
    <div className="flex h-full flex-col bg-background">
      {/* 필터 */}
      <div className="flex gap-2 border-b p-3">
        <select
          value={selectedType}
          onChange={(e) => setSelectedType(e.target.value as WorkType | "all")}
          className="rounded border px-2 py-1 text-sm"
        >
          <option value="all">전체 유형</option>
          <option value="inbound">입고</option>
          <option value="outbound">출고</option>
          <option value="transfer">이송</option>
          <option value="maintenance">정비</option>
        </select>

        <select
          value={selectedStatus}
          onChange={(e) => setSelectedStatus(e.target.value as WorkStatus | "all")}
          className="rounded border px-2 py-1 text-sm"
        >
          <option value="all">전체 상태</option>
          <option value="pending">대기</option>
          <option value="in_progress">진행중</option>
          <option value="completed">완료</option>
          <option value="cancelled">취소</option>
        </select>

        <button
          onClick={loadData}
          className="ml-auto rounded bg-primary px-3 py-1 text-sm text-primary-foreground hover:bg-primary/90"
        >
          🔄 새로고침
        </button>
      </div>

      {/* 테이블 */}
      <div className="flex-1 overflow-auto">
        <table className="w-full text-sm">
          <thead className="sticky top-0 bg-muted text-left">
            <tr>
              <th className="border-b px-3 py-2 font-medium">작업번호</th>
              <th className="border-b px-3 py-2 font-medium">일시</th>
              <th className="border-b px-3 py-2 font-medium">유형</th>
              <th className="border-b px-3 py-2 font-medium">차량</th>
              <th className="border-b px-3 py-2 font-medium">경로</th>
              <th className="border-b px-3 py-2 font-medium">화물</th>
              <th className="border-b px-3 py-2 font-medium">중량</th>
              <th className="border-b px-3 py-2 font-medium">상태</th>
            </tr>
          </thead>
          <tbody>
            {data.length === 0 ? (
              <tr>
                <td colSpan={8} className="py-8 text-center text-muted-foreground">
                  작업 이력이 없습니다
                </td>
              </tr>
            ) : (
              data
                .filter((item) => selectedType === "all" || item.work_type === selectedType)
                .filter((item) => selectedStatus === "all" || item.status === selectedStatus)
                .map((item, index) => (
                  <tr key={item.id || index} className="border-b hover:bg-muted">
                    <td className="px-3 py-2 font-mono text-xs">{item.work_number}</td>
                    <td className="px-3 py-2">
                      {item.work_date
                        ? new Date(item.work_date).toLocaleString("ko-KR", {
                            month: "2-digit",
                            day: "2-digit",
                            hour: "2-digit",
                            minute: "2-digit",
                          })
                        : "-"}
                    </td>
                    <td className="px-3 py-2">
                      <span className="rounded bg-primary/10 px-2 py-1 text-xs font-medium text-primary">
                        {WORK_TYPE_LABELS[item.work_type as WorkType] || item.work_type}
                      </span>
                    </td>
                    <td className="px-3 py-2">{item.vehicle_number || "-"}</td>
                    <td className="px-3 py-2 text-xs">
                      {item.origin && item.destination ? `${item.origin} → ${item.destination}` : "-"}
                    </td>
                    <td className="px-3 py-2">{item.cargo_name || "-"}</td>
                    <td className="px-3 py-2">
                      {item.cargo_weight ? `${item.cargo_weight} ${item.cargo_unit || "ton"}` : "-"}
                    </td>
                    <td className="px-3 py-2">
                      <span
                        className={`rounded px-2 py-1 text-xs font-medium ${WORK_STATUS_COLORS[item.status as WorkStatus] || "bg-muted text-foreground"}`}
                      >
                        {WORK_STATUS_LABELS[item.status as WorkStatus] || item.status}
                      </span>
                    </td>
                  </tr>
                ))
            )}
          </tbody>
        </table>
      </div>

      {/* 푸터 */}
      <div className="border-t bg-muted px-3 py-2 text-xs text-foreground">전체 {data.length}건</div>
    </div>
  );
}