/* eslint-disable @typescript-eslint/no-explicit-any */

'use client';

/* IMPORT */
import { Button } from '@/components/ui/button';
import { Calendar } from '@/components/ui/calendar';
import { CalendarIcon } from 'lucide-react';
import {
  Card,
  CardContent,
  CardHeader,
  CardTitle,
} from '@/components/ui/card';
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
} from '@/components/ui/form';
import { format } from 'date-fns';
import { getProcurementManagerList, getRiskEventsById, modifyRiskEvents } from '../service';
import { ko } from 'date-fns/locale';
import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover';
import { RISK_ADMIN_COMMENTS_LIST, RISK_EVENT_TYPE_LIST, RISK_PROVIDER_LIST } from '@/config/risksConfig';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue
} from '@/components/ui/select';
import {
  Sheet,
  SheetContent,
  SheetDescription,
  SheetHeader,
  SheetTitle,
} from '@/components/ui/sheet';
import { Textarea } from '@/components/ui/textarea';
import { toast } from 'sonner';
import { type RisksView, type User } from '@/db/schema';
import { useEffect, useState, useTransition } from 'react';
import { useForm } from 'react-hook-form';
import UserComboBox from './user-combo-box';
import { z } from 'zod';
import { zodResolver } from '@hookform/resolvers/zod';

// ----------------------------------------------------------------------------------------------------

/* TYPES */
const risksUpdateFormSchema = z.object({
  eventType: z.enum(RISK_EVENT_TYPE_LIST as [string, ...string[]]),
  provider: z.enum(RISK_PROVIDER_LIST as [string, ...string[]]),
  occuredAt: z.date(),
  content: z.string().optional(),
  eventStatus: z.boolean(),
  managerId: z.number().optional(),
  adminComment: z.string().optional(),
});

type RisksUpdateFormData = z.infer<typeof risksUpdateFormSchema>;

interface RisksUpdateSheetProps {
  open: boolean,
  onOpenChange: (open: boolean) => void,
  riskData: RisksView,
  onSuccess: () => void,
};

// ----------------------------------------------------------------------------------------------------

/* RISKS UPDATE FORM SHEET COMPONENT */
function RisksUpdateSheet(props: RisksUpdateSheetProps) {
  const {
    open,
    onOpenChange,
    riskData,
    onSuccess,
  } = props;
  const [isPending, startTransition] = useTransition();
  const form = useForm<RisksUpdateFormData>({
    resolver: zodResolver(risksUpdateFormSchema),
    defaultValues: {
      eventType: '',
      provider: '',
      occuredAt: new Date(),
      content: '',
      eventStatus: true,
      managerId: undefined,
      adminComment: '',
    },
  });
  const watchEventStatus = form.watch('eventStatus');
  const [selectedCommentType, setSelectedCommentType] = useState('');
  const [managerList, setManagerList] = useState<Partial<User>[]>([]);
  const [isLoadingManagerList, setIsLoadingManagerList] = useState(false);

  useEffect(() => {
    if (open && riskData?.id) {
      startTransition(async () => {
        try {
          const targetData = await getRiskEventsById(riskData.id);
          if (targetData) {
            const targetRiskEvent = targetData[0];
            form.reset({
              eventType: targetRiskEvent.eventType,
              provider: targetRiskEvent.provider,
              occuredAt: targetRiskEvent.occuredAt,
              content: targetRiskEvent.content ?? '',
              eventStatus: targetRiskEvent.eventStatus,
              managerId: targetRiskEvent.managerId || undefined,
              adminComment: targetRiskEvent.adminComment ?? '',
            });
            setSelectedCommentType(
              RISK_ADMIN_COMMENTS_LIST.includes(targetRiskEvent.adminComment ?? '') ? targetRiskEvent.adminComment! : '기타',
            );
            const managerList = await getProcurementManagerList();
            setManagerList(managerList);
          }
        } catch (error) {
          console.error('Error in Loading Risk Event for Updating:', error);
          toast.error(error instanceof Error ? error.message : '편집할 데이터를 불러오는 데 실패했습니다.');
        } finally {
          setIsLoadingManagerList(false);
        }
      }); 
    }
  }, [open, form]);

  const onSubmit = async (data: RisksUpdateFormData) => {
    startTransition(async () => {
      try {
        const newRiskEventData = {
          eventType: data.eventType,
          provider: data.provider,
          occuredAt: data.occuredAt,
          content: data.content || null,
          eventStatus: data.eventStatus,
          managerId: !data.eventStatus ? null : data.managerId === 0 ? null : data.managerId,
          adminComment: !data.eventStatus ? null : data.adminComment || null,
        };
        await modifyRiskEvents(riskData.id, newRiskEventData);
        toast.success('리스크 이벤트가 수정되었습니다.');
        onSuccess();
        onOpenChange(false);
      } catch (error) {
        console.error('Error in Saving Risk Event:', error);
        toast.error(
          error instanceof Error ? error.message : '리스크 이벤트 저장 중 오류가 발생했습니다.',
        );
      }
    })
  }

  if (!open) {
    return null;
  }

  return (
    <Sheet open={open} onOpenChange={onOpenChange}>
      <SheetContent className="w-[900px] sm:max-w-[900px] flex flex-col" style={{width:900, height: '100vh'}}>
        <SheetHeader className="flex-shrink-0 pb-4 border-b">
          <SheetTitle className="font-bold">
            리스크 정보 관리
          </SheetTitle>
          <SheetDescription>
            리스크 정보를 수정할 수 있습니다.
          </SheetDescription>
        </SheetHeader>
        <Form {...form}>
          <form onSubmit={form.handleSubmit(onSubmit)} className="flex flex-col flex-1 min-h-0">
            <div className="flex-1 overflow-y-auto py-4 min-h-0">
              <div className="space-y-6 pr-4">
                <Card>
                  <CardHeader>
                    <CardTitle>기본 정보</CardTitle>
                  </CardHeader>
                  <CardContent className="space-y-4">
                    <div className="grid grid-cols-2 gap-4">
                      <FormField
                        control={form.control}
                        name="eventType"
                        render={({ field }) => (
                          <FormItem>
                            <FormLabel>항목</FormLabel>
                            <FormControl>
                              <Select onValueChange={field.onChange} value={field.value || ""}>
                                <SelectTrigger>
                                  <SelectValue placeholder="선택" />
                                </SelectTrigger>
                                <SelectContent>
                                  {RISK_EVENT_TYPE_LIST.map((option) => (
                                    <SelectItem key={option} value={option}>
                                      {option}
                                    </SelectItem>
                                  ))}
                                </SelectContent>
                              </Select>
                            </FormControl>
                            <FormMessage />
                          </FormItem>
                        )}
                      />
                      <FormField
                        control={form.control}
                        name="provider"
                        render={({ field }) => (
                          <FormItem>
                            <FormLabel>신용평가사</FormLabel>
                            <FormControl>
                              <Select onValueChange={field.onChange} value={field.value || ""}>
                                <SelectTrigger>
                                  <SelectValue placeholder="선택" />
                                </SelectTrigger>
                                <SelectContent>
                                  {RISK_PROVIDER_LIST.map((option) => (
                                    <SelectItem key={option} value={option}>
                                      {option}
                                    </SelectItem>
                                  ))}
                                </SelectContent>
                              </Select>
                            </FormControl>
                            <FormMessage />
                          </FormItem>
                        )}
                      />
                      <FormField
                        control={form.control}
                        name="occuredAt"
                        render={({ field }) => (
                          <FormItem className="flex flex-col">
                            <FormLabel>발생일자</FormLabel>
                            <Popover>
                              <PopoverTrigger asChild>
                                <FormControl>
                                  <Button
                                    variant="outline"
                                    className={`pl-3 text-left font-normal ${!field.value && "text-muted-foreground"}`}
                                  >
                                    {field.value
                                      ? format(field.value, "yyyy-MM-dd", { locale: ko })
                                      : "날짜 선택"}
                                    <CalendarIcon className="ml-auto h-4 w-4 opacity-50" />
                                  </Button>
                                </FormControl>
                              </PopoverTrigger>
                              <PopoverContent className="w-auto p-0" align="start">
                                <Calendar
                                  mode="single"
                                  selected={field.value ?? undefined}
                                  onSelect={(date) => field.onChange(date || undefined)}
                                  locale={ko}
                                />
                              </PopoverContent>
                            </Popover>
                            <FormMessage />
                          </FormItem>
                        )}
                      />
                    </div>
                    <FormField
                      control={form.control}
                      name="content"
                      render={({ field }) => (
                        <FormItem>
                          <FormLabel>상세 내용</FormLabel>
                          <FormControl>
                            <Textarea
                              placeholder="상세 내용을 입력하십시오."
                              {...field}
                              value={field.value ?? ''}
                            />
                          </FormControl>
                          <FormMessage />
                        </FormItem>
                      )}
                    />
                  </CardContent>
                </Card>
                <Card className="w-full">
                  <CardHeader>
                    <CardTitle>관리 정보</CardTitle>
                  </CardHeader>
                  <CardContent className="space-y-4">
                    <FormField
                      control={form.control}
                      name="eventStatus"
                      render={({ field }) => (
                        <FormItem>
                          <FormLabel>리스크 해소 여부</FormLabel>
                          <FormControl>
                            <Select onValueChange={(value) => field.onChange(value === 'true')} value={String(field.value)}>
                              <SelectTrigger>
                                <SelectValue placeholder="리스크 해소 여부 선택" />
                              </SelectTrigger>
                              <SelectContent>
                                <SelectItem value="true">아니오</SelectItem>
                                <SelectItem value="false">예</SelectItem>
                              </SelectContent>
                            </Select>
                          </FormControl>
                          <FormMessage />
                        </FormItem>
                      )}
                    />
                    {watchEventStatus && (
                      <div className="grid grid-cols-2 gap-4">
                        <FormField
                          control={form.control}
                          name="managerId"
                          render={({ field }) => (
                            <FormItem>
                              <FormLabel>구매 담당자</FormLabel>
                                <UserComboBox
                                  users={managerList}
                                  value={field.value ?? null}
                                  onChange={field.onChange}
                                  placeholder={isLoadingManagerList ? '구매 담당자 로딩 중...' : '구매 담당자 선택...'}
                                  disabled={isPending || isLoadingManagerList}
                                />
                              <FormControl>
                              </FormControl>
                              <FormMessage />
                            </FormItem>
                          )}
                        />
                        <div className="flex flex-col gap-4">
                          <FormItem>
                            <FormLabel>관리 담당자 의견</FormLabel>
                            <FormControl>
                              <Select
                                onValueChange={(value) => {
                                  setSelectedCommentType(value);
                                  if (value !== '기타') {
                                    form.setValue('adminComment', value);
                                  } else {
                                    form.setValue('adminComment', '');
                                  }
                                }}
                                value={selectedCommentType}
                              >
                                <SelectTrigger>
                                  <SelectValue placeholder="의견 선택" />
                                </SelectTrigger>
                                <SelectContent>
                                  {RISK_ADMIN_COMMENTS_LIST.map((comment) => (
                                    <SelectItem key={comment} value={comment}>
                                      {comment}
                                    </SelectItem>
                                  ))}
                                </SelectContent>
                              </Select>
                            </FormControl>
                          </FormItem>
                          {selectedCommentType === '기타' && (
                            <FormField
                              control={form.control}
                              name="adminComment"
                              render={({ field }) => (
                                <FormItem>
                                  <FormControl>
                                    <Textarea
                                      placeholder="관리 담당자 의견을 입력하십시오."
                                      {...field}
                                      value={field.value ?? ''}
                                    />
                                  </FormControl>
                                </FormItem>
                              )}
                            />
                          )}
                        </div>
                      </div>
                    )}
                  </CardContent>
                </Card>
              </div>
            </div>
            <div className="flex-shrink-0 flex justify-end gap-2 bg-background">
              <Button
                type="button"
                variant="outline"
                onClick={() => onOpenChange(false)}
                disabled={isPending}
              >
                취소
              </Button>
              <Button type="submit" disabled={isPending}>
                {isPending ? '저장 중...' : '수정'}
              </Button>
            </div>
          </form>
        </Form>
      </SheetContent>
    </Sheet>
  )
}

// ----------------------------------------------------------------------------------------------------

/* EXPORT */
export default RisksUpdateSheet;