"use client";

import React, { useState, useEffect } from "react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import { Plus, Search, Edit, Trash2, TestTube, Filter } from "lucide-react";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import { toast } from "sonner";
import { showErrorToast } from "@/lib/utils/toastUtils";
import {
  ExternalCallConfigAPI,
  ExternalCallConfig,
  ExternalCallConfigFilter,
  CALL_TYPE_OPTIONS,
  API_TYPE_OPTIONS,
  ACTIVE_STATUS_OPTIONS,
} from "@/lib/api/externalCallConfig";
import { ExternalCallConfigModal } from "@/components/admin/ExternalCallConfigModal";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/components/ui/alert-dialog";

export default function ExternalCallConfigsPage() {
  const [configs, setConfigs] = useState<ExternalCallConfig[]>([]);
  const [loading, setLoading] = useState(true);
  const [searchQuery, setSearchQuery] = useState("");
  const [filter, setFilter] = useState<ExternalCallConfigFilter>({
    is_active: "Y",
  });

  // 모달 상태
  const [isModalOpen, setIsModalOpen] = useState(false);
  const [editingConfig, setEditingConfig] = useState<ExternalCallConfig | null>(null);

  // 삭제 확인 다이얼로그 상태
  const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
  const [configToDelete, setConfigToDelete] = useState<ExternalCallConfig | null>(null);

  // 외부 호출 설정 목록 조회
  const fetchConfigs = async () => {
    try {
      setLoading(true);
      const response = await ExternalCallConfigAPI.getConfigs({
        ...filter,
        search: searchQuery.trim() || undefined,
      });

      if (response.success) {
        setConfigs(response.data || []);
      } else {
        showErrorToast("외부 호출 설정 조회에 실패했습니다", response.message, {
          guidance: "네트워크 연결을 확인하고 다시 시도해 주세요.",
        });
      }
    } catch (error) {
      console.error("외부 호출 설정 조회 오류:", error);
      showErrorToast("외부 호출 설정 조회에 실패했습니다", error, {
        guidance: "네트워크 연결을 확인하고 다시 시도해 주세요.",
      });
    } finally {
      setLoading(false);
    }
  };

  // 초기 로드 및 필터/검색 변경 시 재조회
  useEffect(() => {
    fetchConfigs();
  }, [filter]);

  // 검색 실행
  const handleSearch = () => {
    fetchConfigs();
  };

  // 검색 입력 시 엔터키 처리
  const handleSearchKeyPress = (e: React.KeyboardEvent) => {
    if (e.key === "Enter") {
      handleSearch();
    }
  };

  // 새 설정 추가
  const handleAddConfig = () => {
    setEditingConfig(null);
    setIsModalOpen(true);
  };

  // 설정 편집
  const handleEditConfig = (config: ExternalCallConfig) => {
    setEditingConfig(config);
    setIsModalOpen(true);
  };

  // 설정 삭제 확인
  const handleDeleteConfig = (config: ExternalCallConfig) => {
    setConfigToDelete(config);
    setDeleteDialogOpen(true);
  };

  // 설정 삭제 실행
  const confirmDeleteConfig = async () => {
    if (!configToDelete?.id) return;

    try {
      const response = await ExternalCallConfigAPI.deleteConfig(configToDelete.id);

      if (response.success) {
        toast.success("외부 호출 설정이 삭제되었습니다.");
        fetchConfigs();
      } else {
        showErrorToast("외부 호출 설정 삭제에 실패했습니다", response.message, {
          guidance: "잠시 후 다시 시도해 주세요.",
        });
      }
    } catch (error) {
      console.error("외부 호출 설정 삭제 오류:", error);
      showErrorToast("외부 호출 설정 삭제에 실패했습니다", error, {
        guidance: "잠시 후 다시 시도해 주세요.",
      });
    } finally {
      setDeleteDialogOpen(false);
      setConfigToDelete(null);
    }
  };

  // 설정 테스트
  const handleTestConfig = async (config: ExternalCallConfig) => {
    if (!config.id) return;

    try {
      const response = await ExternalCallConfigAPI.testConfig(config.id);

      if (response.success && response.data?.success) {
        toast.success(`테스트 성공: ${response.data.message}`);
      } else {
        toast.error(`테스트 실패: ${response.data?.message || response.message}`);
      }
    } catch (error) {
      console.error("외부 호출 설정 테스트 오류:", error);
      showErrorToast("외부 호출 테스트 실행에 실패했습니다", error, {
        guidance: "URL과 설정을 확인해 주세요.",
      });
    }
  };

  // 모달 저장 완료 시 목록 새로고침
  const handleModalSave = () => {
    setIsModalOpen(false);
    setEditingConfig(null);
    fetchConfigs();
  };

  // 호출 타입 라벨 가져오기
  const getCallTypeLabel = (callType: string) => {
    return CALL_TYPE_OPTIONS.find((option) => option.value === callType)?.label || callType;
  };

  // API 타입 라벨 가져오기
  const getApiTypeLabel = (apiType?: string) => {
    if (!apiType) return "";
    return API_TYPE_OPTIONS.find((option) => option.value === apiType)?.label || apiType;
  };

  return (
    <div className="flex min-h-screen flex-col bg-background">
      <div className="space-y-6 p-6">
        {/* 페이지 헤더 */}
        <div className="space-y-2 border-b pb-4">
          <h1 className="text-3xl font-bold tracking-tight">외부 호출 관리</h1>
          <p className="text-sm text-muted-foreground">Discord, Slack, 카카오톡 등 외부 호출 설정을 관리합니다.</p>
        </div>

        {/* 검색 및 필터 영역 */}
        <div className="space-y-4">
          {/* 첫 번째 줄: 검색 + 추가 버튼 */}
          <div className="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
            <div className="flex flex-col gap-3 sm:flex-row sm:items-center">
              <div className="w-full sm:w-[320px]">
                <div className="relative">
                  <Search className="absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
                  <Input
                    placeholder="설정 이름 또는 설명으로 검색..."
                    value={searchQuery}
                    onChange={(e) => setSearchQuery(e.target.value)}
                    onKeyPress={handleSearchKeyPress}
                    className="h-10 pl-10 text-sm"
                  />
                </div>
              </div>
              <Button onClick={handleSearch} variant="outline" className="h-10 gap-2 text-sm font-medium">
                <Search className="h-4 w-4" />
                검색
              </Button>
            </div>
            <Button onClick={handleAddConfig} className="h-10 gap-2 text-sm font-medium">
              <Plus className="h-4 w-4" />
              새 외부 호출 추가
            </Button>
          </div>

          {/* 두 번째 줄: 필터 */}
          <div className="grid grid-cols-1 gap-3 sm:grid-cols-3">
            <Select
              value={filter.call_type || "all"}
              onValueChange={(value) =>
                setFilter((prev) => ({
                  ...prev,
                  call_type: value === "all" ? undefined : value,
                }))
              }
            >
              <SelectTrigger className="h-10">
                <SelectValue placeholder="호출 타입" />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="all">전체</SelectItem>
                {CALL_TYPE_OPTIONS.map((option) => (
                  <SelectItem key={option.value} value={option.value}>
                    {option.label}
                  </SelectItem>
                ))}
              </SelectContent>
            </Select>

            <Select
              value={filter.api_type || "all"}
              onValueChange={(value) =>
                setFilter((prev) => ({
                  ...prev,
                  api_type: value === "all" ? undefined : value,
                }))
              }
            >
              <SelectTrigger className="h-10">
                <SelectValue placeholder="API 타입" />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="all">전체</SelectItem>
                {API_TYPE_OPTIONS.map((option) => (
                  <SelectItem key={option.value} value={option.value}>
                    {option.label}
                  </SelectItem>
                ))}
              </SelectContent>
            </Select>

            <Select
              value={filter.is_active || "Y"}
              onValueChange={(value) =>
                setFilter((prev) => ({
                  ...prev,
                  is_active: value,
                }))
              }
            >
              <SelectTrigger className="h-10">
                <SelectValue placeholder="상태" />
              </SelectTrigger>
              <SelectContent>
                {ACTIVE_STATUS_OPTIONS.map((option) => (
                  <SelectItem key={option.value} value={option.value}>
                    {option.label}
                  </SelectItem>
                ))}
              </SelectContent>
            </Select>
          </div>
        </div>

        {/* 설정 목록 */}
        <div className="rounded-lg border bg-card shadow-sm">
          {loading ? (
            // 로딩 상태
            <div className="flex h-64 items-center justify-center">
              <div className="text-sm text-muted-foreground">로딩 중...</div>
            </div>
          ) : configs.length === 0 ? (
            // 빈 상태
            <div className="flex h-64 flex-col items-center justify-center">
              <div className="flex flex-col items-center gap-2 text-center">
                <p className="text-sm text-muted-foreground">등록된 외부 호출 설정이 없습니다.</p>
                <p className="text-xs text-muted-foreground">새 외부 호출을 추가해보세요.</p>
              </div>
            </div>
          ) : (
            // 설정 테이블 목록
            <Table>
              <TableHeader>
                <TableRow className="border-b bg-muted/50 hover:bg-muted/50">
                  <TableHead className="h-12 text-sm font-semibold">설정명</TableHead>
                  <TableHead className="h-12 text-sm font-semibold">호출 타입</TableHead>
                  <TableHead className="h-12 text-sm font-semibold">API 타입</TableHead>
                  <TableHead className="h-12 text-sm font-semibold">설명</TableHead>
                  <TableHead className="h-12 text-sm font-semibold">상태</TableHead>
                  <TableHead className="h-12 text-sm font-semibold">생성일</TableHead>
                  <TableHead className="h-12 text-center text-sm font-semibold">작업</TableHead>
                </TableRow>
              </TableHeader>
              <TableBody>
                {configs.map((config) => (
                  <TableRow key={config.id} className="border-b transition-colors hover:bg-muted/50">
                    <TableCell className="h-16 text-sm font-medium">{config.config_name}</TableCell>
                    <TableCell className="h-16 text-sm">
                      <Badge variant="outline">{getCallTypeLabel(config.call_type)}</Badge>
                    </TableCell>
                    <TableCell className="h-16 text-sm">
                      {config.api_type ? (
                        <Badge variant="secondary">{getApiTypeLabel(config.api_type)}</Badge>
                      ) : (
                        <span className="text-muted-foreground">-</span>
                      )}
                    </TableCell>
                    <TableCell className="h-16 text-sm">
                      <div className="max-w-xs">
                        {config.description ? (
                          <span className="block truncate text-muted-foreground" title={config.description}>
                            {config.description}
                          </span>
                        ) : (
                          <span className="text-muted-foreground">-</span>
                        )}
                      </div>
                    </TableCell>
                    <TableCell className="h-16 text-sm">
                      <Badge variant={config.is_active === "Y" ? "default" : "destructive"}>
                        {config.is_active === "Y" ? "활성" : "비활성"}
                      </Badge>
                    </TableCell>
                    <TableCell className="h-16 text-sm text-muted-foreground">
                      {config.created_date ? new Date(config.created_date).toLocaleDateString() : "-"}
                    </TableCell>
                    <TableCell className="h-16 text-sm">
                      <div className="flex justify-center gap-1">
                        <Button 
                          variant="ghost" 
                          size="icon" 
                          className="h-8 w-8" 
                          onClick={() => handleTestConfig(config)} 
                          title="테스트"
                        >
                          <TestTube className="h-4 w-4" />
                        </Button>
                        <Button 
                          variant="ghost" 
                          size="icon" 
                          className="h-8 w-8" 
                          onClick={() => handleEditConfig(config)} 
                          title="편집"
                        >
                          <Edit className="h-4 w-4" />
                        </Button>
                        <Button
                          variant="ghost"
                          size="icon"
                          className="h-8 w-8 text-destructive hover:text-destructive"
                          onClick={() => handleDeleteConfig(config)}
                          title="삭제"
                        >
                          <Trash2 className="h-4 w-4" />
                        </Button>
                      </div>
                    </TableCell>
                  </TableRow>
                ))}
              </TableBody>
            </Table>
          )}
        </div>

      {/* 외부 호출 설정 모달 */}
      <ExternalCallConfigModal
        isOpen={isModalOpen}
        onClose={() => setIsModalOpen(false)}
        onSave={handleModalSave}
        editingConfig={editingConfig}
      />

      {/* 삭제 확인 다이얼로그 */}
      <AlertDialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
        <AlertDialogContent className="max-w-[95vw] sm:max-w-[500px]">
          <AlertDialogHeader>
            <AlertDialogTitle className="text-base sm:text-lg">외부 호출 설정 삭제</AlertDialogTitle>
            <AlertDialogDescription className="text-xs sm:text-sm">
              "{configToDelete?.config_name}" 설정을 삭제하시겠습니까?
              <br />이 작업은 되돌릴 수 없습니다.
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter className="gap-2 sm:gap-0">
            <AlertDialogCancel className="h-8 flex-1 text-xs sm:h-10 sm:flex-none sm:text-sm">
              취소
            </AlertDialogCancel>
            <AlertDialogAction 
              onClick={confirmDeleteConfig} 
              className="h-8 flex-1 bg-destructive text-xs hover:bg-destructive/90 sm:h-10 sm:flex-none sm:text-sm"
            >
              삭제
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>
      </div>
    </div>
  );
}
