import { useState, useEffect, useRef } from "react"
import { Button } from "@/components/ui/button"
import { Label } from "@/components/ui/label"
import { Input } from "@/components/ui/input"
import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "@/components/ui/dialog"
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"
import { DataItemForm } from "@/app/view/components/DataItemForm"
import { ViewFormItem } from "@/app/view/components/ViewFormItem"
import { nanoid } from "nanoid"

interface ViewEditorProps {
  open: boolean
  onOpenChange: (open: boolean) => void
  data?: {
    id?: string
    title?: string
    data?: { items: any[] }
    views?: any[]
  }
  onSave: (data: any) => void
}

export const ViewEditor = ({ open, onOpenChange, data, onSave }: ViewEditorProps) => {
  const [title, setTitle] = useState('')
  const [dataItems, setDataItems] = useState<any[]>([])
  const [views, setViews] = useState<any[]>([])
  const dataItemsScrollRef = useRef<HTMLDivElement>(null)
  const viewsScrollRef = useRef<HTMLDivElement>(null)

  const isUpdate = !!data?.id

  useEffect(() => {
    if (open) {
      setTitle(data?.title || '')
      setDataItems(data?.data?.items || [])
      setViews(data?.views || [])
    }
  }, [open, data])

  const handleAddDataItem = () => {
    setDataItems([...dataItems, { type: 'api', api: { url: '' } }])
    // 异步滚动到底部，使用 smooth 平滑滚动
    setTimeout(() => {
      if (dataItemsScrollRef.current) {
        dataItemsScrollRef.current.scrollTo({
          top: dataItemsScrollRef.current.scrollHeight,
          behavior: 'smooth'
        })
      }
    }, 0)
  }

  const handleUpdateDataItem = (index: number, item: any) => {
    const newItems = [...dataItems]
    newItems[index] = item
    setDataItems(newItems)
  }

  const handleRemoveDataItem = (index: number) => {
    setDataItems(dataItems.filter((_, i) => i !== index))
  }

  const handleAddView = () => {
    setViews([...views, { id: nanoid(16), title: '', query: '' }])
    // 异步滚动到底部，使用 smooth 平滑滚动
    setTimeout(() => {
      if (viewsScrollRef.current) {
        viewsScrollRef.current.scrollTo({
          top: viewsScrollRef.current.scrollHeight,
          behavior: 'smooth'
        })
      }
    }, 0)
  }

  const handleUpdateView = (index: number, view: any) => {
    const newViews = [...views]
    newViews[index] = view
    setViews(newViews)
  }

  const handleRemoveView = (index: number) => {
    setViews(views.filter((_, i) => i !== index))
  }

  const handleSave = () => {
    const pickData = dataItems.map(item => {
      if (item.type === 'api') {
        delete item.api.query
      }
      if (item.type === 'worker') {
        delete item.worker.worker
      }
      if (item.type === 'context') {
        delete item.context.router
      }
      if (item.type === 'page') {

      }
      return item
    })
    const viewData = {
      id: data?.id,
      title,
      data: {
        items: pickData
      },
      views
    }
    onSave(viewData)
    onOpenChange(false)
  }

  const handleClose = () => {
    onOpenChange(false)
  }

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="max-w-3xl">
        <DialogHeader>
          <DialogTitle>{isUpdate ? '编辑视图' : '新增视图'}</DialogTitle>
        </DialogHeader>

        <div className="space-y-4">
          {/* 固定的视图标题 */}
          <div className="space-y-2">
            <Label htmlFor="title">视图标题</Label>
            <Input
              id="title"
              value={title}
              onChange={(e) => setTitle(e.target.value)}
              placeholder="输入视图标题"
            />
          </div>

          {/* Tabs 容器 */}
          <Tabs defaultValue="data" className="w-full flex flex-col">
            <TabsList className="grid w-full grid-cols-2">
              <TabsTrigger value="data">数据项配置</TabsTrigger>
              <TabsTrigger value="views">视图配置</TabsTrigger>
            </TabsList>

            {/* 数据项配置 Tab */}
            <TabsContent value="data" className="flex flex-col mt-4">
              <div className="flex justify-between items-center mb-4">
                <h3 className="font-medium">数据项配置 (data.items)</h3>
                <Button type="button" variant="outline" size="sm" onClick={handleAddDataItem} className="cursor-pointer">
                  添加数据项
                </Button>
              </div>
              <div ref={dataItemsScrollRef} className="space-y-4 max-h-[50vh] overflow-y-auto pr-4">
                {dataItems.length === 0 ? (
                  <div className="text-center text-sm text-gray-500 py-8">
                    暂无数据项，点击"添加数据项"开始配置
                  </div>
                ) : (
                  dataItems.map((item, index) => (
                    <DataItemForm
                      key={index}
                      item={item}
                      onChange={(newItem) => handleUpdateDataItem(index, newItem)}
                      onRemove={() => handleRemoveDataItem(index)}
                    />
                  ))
                )}
              </div>
            </TabsContent>

            {/* 视图配置 Tab */}
            <TabsContent value="views" className="flex flex-col mt-4">
              <div className="flex justify-between items-center mb-4">
                <h3 className="font-medium">视图配置 (views)</h3>
                <Button type="button" variant="outline" size="sm" onClick={handleAddView} className="cursor-pointer">
                  添加视图
                </Button>
              </div>
              <div ref={viewsScrollRef} className="space-y-4 max-h-[50vh] overflow-y-auto pr-4">
                {views.length === 0 ? (
                  <div className="text-center text-sm text-gray-500 py-8">
                    暂无视图，点击"添加视图"开始配置
                  </div>
                ) : (
                  views.map((view, index) => (
                    <ViewFormItem
                      key={view.id || index}
                      view={view}
                      onChange={(newView) => handleUpdateView(index, newView)}
                      onRemove={() => handleRemoveView(index)}
                    />
                  ))
                )}
              </div>
            </TabsContent>
          </Tabs>
        </div>

        <DialogFooter>
          <Button type="button" variant="outline" onClick={handleClose} className="cursor-pointer">
            取消
          </Button>
          <Button type="button" onClick={handleSave} className="cursor-pointer">
            保存
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  )
}