"use client"

import * as React from "react"
import { zodResolver } from "@hookform/resolvers/zod"
import { useForm } from "react-hook-form"
import { toast } from "sonner"
import * as z from "zod"
import { Loader } from "lucide-react"

import { Button } from "@/components/ui/button"
import {
  Sheet,
  SheetClose,
  SheetContent,
  SheetDescription,
  SheetFooter,
  SheetHeader,
  SheetTitle,
} from "@/components/ui/sheet"
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
} from "@/components/ui/form"
import { Input } from "@/components/ui/input"

import { updateDocumentClassCodeGroup } from "@/lib/docu-list-rule/document-class/service"
import { documentClasses } from "@/db/schema/docu-list-rule"

const updateDocumentClassSchema = z.object({
  value: z.string()
    .min(1, "Value는 필수입니다.")
    .max(1, "Value는 1자리만 입력 가능합니다. (예: A, B, 0, 1)")
    .regex(/^[A-Z0-9]$/, "대문자 알파벳 또는 숫자 1자리만 입력 가능합니다. (예: A, B, 0, 1)"),
  description: z.string().optional(),
})

type UpdateDocumentClassSchema = z.infer<typeof updateDocumentClassSchema>

interface DocumentClassEditSheetProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  data: typeof documentClasses.$inferSelect | null
  onSuccess?: () => void
}

export function DocumentClassEditSheet({
  open,
  onOpenChange,
  data,
  onSuccess,
}: DocumentClassEditSheetProps) {
  const [isUpdatePending, startUpdateTransition] = React.useTransition()

  const form = useForm<UpdateDocumentClassSchema>({
    resolver: zodResolver(updateDocumentClassSchema),
    defaultValues: {
      value: data?.value || "",
      description: data?.description || "",
    },
    mode: "onChange"
  })

  React.useEffect(() => {
    if (data) {
      form.reset({
        value: data.value || "",
        description: data.description || "",
      })
    }
  }, [data, form])

  async function onSubmit(input: UpdateDocumentClassSchema) {
    if (!data) return

    startUpdateTransition(async () => {
      try {
        const result = await updateDocumentClassCodeGroup({
          id: data.id,
          value: input.value,
          description: input.description,
        })
        
        if (result.success) {
          toast.success("Document Class가 성공적으로 수정되었습니다.")
          onSuccess?.()
          onOpenChange(false)
        } else {
          toast.error(result.error || "수정에 실패했습니다.")
        }
      } catch (error) {
        console.error("Update error:", error)
        toast.error("Document Class 수정 중 오류가 발생했습니다.")
      }
    })
  }

  return (
    <Sheet open={open} onOpenChange={onOpenChange}>
      <SheetContent className="flex flex-col gap-6 sm:max-w-md">
        <SheetHeader className="text-left">
          <SheetTitle>Document Class 수정</SheetTitle>
          <SheetDescription>
            Document Class 정보를 수정하고 변경사항을 저장하세요
          </SheetDescription>
        </SheetHeader>
        <Form {...form}>
          <form onSubmit={form.handleSubmit(onSubmit)} className="flex flex-col gap-4">
            <FormField
              control={form.control}
              name="value"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Value *</FormLabel>
                  <FormControl>
                    <Input 
                      {...field} 
                      placeholder="예: A" 
                      maxLength={1}
                      className="uppercase"
                      onChange={(e) => field.onChange(e.target.value.toUpperCase())}
                    />
                  </FormControl>
                  <div className="text-xs text-muted-foreground mt-1">
                    대문자 알파벳 1자리 또는 숫자 1자리 (A, B, 0, 1 등)
                  </div>
                  <FormMessage />
                </FormItem>
              )}
            />
            <FormField
              control={form.control}
              name="description"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Description</FormLabel>
                  <FormControl>
                    <Input placeholder="예: General Documents (선택사항)" {...field} />
                  </FormControl>
                  <div className="text-xs text-muted-foreground mt-1">
                    선택사항: Document Class에 대한 추가 설명
                  </div>
                  <FormMessage />
                </FormItem>
              )}
            />

            <SheetFooter className="gap-2 pt-2 sm:space-x-0">
              <SheetClose asChild>
                <Button type="button" variant="outline">
                  취소
                </Button>
              </SheetClose>
              <Button 
                type="submit" 
                disabled={isUpdatePending || !form.formState.isValid}
              >
                {isUpdatePending && (
                  <Loader
                    className="mr-2 size-4 animate-spin"
                    aria-hidden="true"
                  />
                )}
                저장
              </Button>
            </SheetFooter>
          </form>
        </Form>
      </SheetContent>
    </Sheet>
  )
}