"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 { Plus } from "lucide-react"

import { Button } from "@/components/ui/button"
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from "@/components/ui/dialog"
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
} from "@/components/ui/form"
import { Input } from "@/components/ui/input"
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select"

import { createDocumentClassCodeGroup } from "@/lib/docu-list-rule/document-class/service"
import { getProjectLists } from "@/lib/projects/service"

const createDocumentClassSchema = z.object({
  projectId: z.string().min(1, "프로젝트는 필수입니다."),
  value: z.string().min(1, "Value는 필수입니다."),
  description: z.string().optional(),
})

type CreateDocumentClassSchema = z.infer<typeof createDocumentClassSchema>

interface DocumentClassAddDialogProps {
  onSuccess?: () => void
}

export function DocumentClassAddDialog({
  onSuccess,
}: DocumentClassAddDialogProps) {
  const [open, setOpen] = React.useState(false)
  const [isPending, startTransition] = React.useTransition()
  const [projects, setProjects] = React.useState<Array<{ id: number; code: string; name: string; type: string }>>([])

  const form = useForm<CreateDocumentClassSchema>({
    resolver: zodResolver(createDocumentClassSchema),
    defaultValues: {
      projectId: "",
      value: "",
      description: "",
    },
    mode: "onChange"
  })

  // 프로젝트 목록 로드
  React.useEffect(() => {
    if (open) {
      const loadProjects = async () => {
        try {
          const result = await getProjectLists({ 
            page: 1, 
            perPage: 1000,
            search: "",
            sort: [],
            filters: [],
            joinOperator: "and",
            flags: [],
            code: "",
            name: "",
            type: ""
          })
          if (result.data) {
            // plant 타입의 프로젝트만 필터링
            const plantProjects = result.data.filter(project => project.type === 'plant')
            setProjects(plantProjects)
          }
        } catch (error) {
          console.error("Failed to load projects:", error)
          toast.error("프로젝트 목록을 불러오는데 실패했습니다.")
        }
      }
      loadProjects()
    }
  }, [open])

  async function onSubmit(input: CreateDocumentClassSchema) {
    startTransition(async () => {
      try {
        const result = await createDocumentClassCodeGroup({
          projectId: parseInt(input.projectId),
          value: input.value,
          description: input.description,
        })
        
        if (result.success) {
          toast.success("Document Class가 생성되었습니다.")
          form.reset()
          setOpen(false)
          onSuccess?.()
        } else {
          toast.error(result.error || "생성에 실패했습니다.")
        }
      } catch (error) {
        console.error("Create error:", error)
        toast.error("Document Class 생성 중 오류가 발생했습니다.")
      }
    })
  }

  const handleCancel = () => {
    form.reset()
    setOpen(false)
  }

  return (
    <Dialog open={open} onOpenChange={setOpen}>
      <DialogTrigger asChild>
        <Button variant="outline" size="sm">
          <Plus className="mr-2 h-4 w-4" />
          Add
        </Button>
      </DialogTrigger>
      <DialogContent className="sm:max-w-[425px]">
        <DialogHeader>
          <DialogTitle>Document Class 추가</DialogTitle>
          <DialogDescription>
            새로운 Document Class를 추가합니다.
            <span className="text-red-500 mt-1 block text-sm">* 표시된 항목은 필수 입력사항입니다.</span>
          </DialogDescription>
        </DialogHeader>
        <Form {...form}>
          <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-4">
            <FormField
              control={form.control}
              name="projectId"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>프로젝트 *</FormLabel>
                  <Select onValueChange={field.onChange} defaultValue={field.value}>
                    <FormControl>
                      <SelectTrigger>
                        <SelectValue placeholder="프로젝트를 선택하세요" />
                      </SelectTrigger>
                    </FormControl>
                    <SelectContent>
                      {projects.map((project) => (
                        <SelectItem key={project.id} value={project.id.toString()}>
                          {project.code} - {project.name}
                        </SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                  <FormMessage />
                </FormItem>
              )}
            />

            <FormField
              control={form.control}
              name="value"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Value *</FormLabel>
                  <FormControl>
                    <Input {...field} placeholder="예: A Class" />
                  </FormControl>
                  <FormMessage />
                </FormItem>
              )}
            />
            
            <FormField
              control={form.control}
              name="description"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Description</FormLabel>
                  <FormControl>
                    <Input {...field} placeholder="예: A Class Description (선택사항)" />
                  </FormControl>
                  <FormMessage />
                </FormItem>
              )}
            />
            <DialogFooter>
              <Button type="button" variant="outline" onClick={handleCancel}>
                취소
              </Button>
              <Button type="submit" disabled={isPending || !form.formState.isValid}>
                {isPending ? "추가 중..." : "추가"}
              </Button>
            </DialogFooter>
          </form>
        </Form>
      </DialogContent>
    </Dialog>
  )
}