import { useEffect, useMemo, useRef, useState } from 'react'
import { ExhibitFlipOverlay, FlipActionButton, Image, SceneHint } from '@/components'
import { cn, getBackgroundImage, getPublicPath, getStaticImage } from '@/lib/utils'
import { filterInput } from '@/lib/utils/sensitiveWords'
import { useNavigate, useParams } from 'react-router-dom'
import { saveZhanglepingStore, useZhanglepingStore } from '@/store/zhanglepingStore'
import {
  type BackgroundKey,
  type ClothesKey,
  type MaterialKey,
  type SidebarBlockKey,
  STAR_NAME,
  backgroundToAllowedMaterials,
  buildCompositeDataUrl,
  getBackgroundAssetKey,
  materialConflicts,
  materialOptions,
  sidebarBlocks,
} from './draw1.config'
import { TopMenuPanel } from './TopMenuPanel'
import { SanmaoDialogueItem, SanmaoDialogueSteps } from '@/pages/zhangleping/components'

const COMPLETION_DIALOGUE =
  '太好啦！我的记忆都回来啦，还拥有了新时代的模样！爷爷画的我，藏着善良、勇敢与热爱；你画的我，让这些美好品质在今天继续发光！谢谢你，让三毛精神一直传承下去！'

const ZhanglepingDraw1 = () => {
  const navigate = useNavigate()
  const { moduleName } = useParams<{ moduleName: string }>()
  const { setDrawArtwork } = useZhanglepingStore()

  const [activeBlock, setActiveBlock] = useState<SidebarBlockKey>('衣柜')
  const [selectedClothes, setSelectedClothes] = useState<ClothesKey>('默认')
  const [selectedBackground, setSelectedBackground] = useState<BackgroundKey>('城际高铁')
  const [selectedMaterials, setSelectedMaterials] = useState<Set<MaterialKey>>(new Set())
  const [showCaptionInput, setShowCaptionInput] = useState(false)
  const [captionText, setCaptionText] = useState('')
  const [isSubmitting, setIsSubmitting] = useState(false)
  const [createdArtworkSrc, setCreatedArtworkSrc] = useState('')
  const [showCreatedOverlay, setShowCreatedOverlay] = useState(false)
  const [showCompletionDialogue, setShowCompletionDialogue] = useState(false)
  const [submitErrorHintKey, setSubmitErrorHintKey] = useState(0)

  const captionInputRef = useRef<HTMLInputElement>(null)
  const compositionRef = useRef<HTMLDivElement>(null)

  const allowedMaterialKeys = useMemo(
    () => backgroundToAllowedMaterials[selectedBackground] ?? [],
    [selectedBackground]
  )
  const backgroundAssetKey = getBackgroundAssetKey(selectedBackground)

  const scenePreviewSrc = `${STAR_NAME}/reflection/draw/布景/${backgroundAssetKey}`
  const clothingSrc = `${STAR_NAME}/reflection/draw/衣柜/${selectedClothes}`
  const boardBgSrc = `${STAR_NAME}/reflection/draw/画板底图`

  // 切换布景后：移除不允许的素材
  useEffect(() => {
    setSelectedMaterials((prev) => {
      const next = new Set([...prev].filter((k) => allowedMaterialKeys.includes(k)))
      return next.size === prev.size ? prev : next
    })
  }, [allowedMaterialKeys])

  useEffect(() => {
    if (showCaptionInput) captionInputRef.current?.focus()
  }, [showCaptionInput])

  const handleToggleMaterial = (key: MaterialKey) => {
    setSelectedMaterials((prev) => {
      const next = new Set(prev)
      if (next.has(key)) {
        next.delete(key)
        return next
      }
      const conflicts = materialConflicts[key] ?? []
      for (const c of conflicts) next.delete(c)
      if (next.size < 3) next.add(key)
      return next
    })
  }

  const handleSubmitArtwork = async () => {
    if (!showCaptionInput) {
      setShowCaptionInput(true)
      return
    }
    if (isSubmitting || !compositionRef.current) return

    const filteredCaptionText = filterInput(captionText.trim())
    if (Array.from(filteredCaptionText).length > 15) {
      setCaptionText(Array.from(filteredCaptionText).slice(0, 15).join(''))
      setSubmitErrorHintKey((key) => key + 1)
      return
    }

    setIsSubmitting(true)
    try {
      const dataUrl = await buildCompositeDataUrl(compositionRef.current)
      setDrawArtwork(dataUrl, filteredCaptionText)
      saveZhanglepingStore()
      setCreatedArtworkSrc(dataUrl)
      setShowCreatedOverlay(true)
    } catch (error) {
      console.error('Failed to submit draw artwork', error)
      setSubmitErrorHintKey((key) => key + 1)
    } finally {
      setIsSubmitting(false)
    }
  }

  const handleCollectArtwork = () => {
    navigate(`/${moduleName}/${STAR_NAME}/reflection5`)
  }

  const isPreviewVisible = activeBlock !== '任务提示'

  if (!moduleName) return null

  return (
    <div
      className="w-full h-full relative overflow-hidden bg-cover bg-center bg-no-repeat"
      style={{ backgroundImage: getBackgroundImage(boardBgSrc) }}
    >
      {/* 中央预览区 */}
      <div
        ref={compositionRef}
        className="absolute left-20 bottom-[86px] w-[1605px] h-[904px] bg-cover bg-center bg-no-repeat"
        style={{ backgroundImage: getBackgroundImage(scenePreviewSrc) }}
      >
        <div className="relative w-full h-full">
          {isPreviewVisible && (
            <div className="absolute left-111 bottom-0 z-10">
              <Image src={getStaticImage(clothingSrc)} alt="衣柜选项" />
            </div>
          )}

          {isPreviewVisible &&
            materialOptions
              .filter((opt) => selectedMaterials.has(opt.key))
              .map((opt) => (
                <div
                  key={opt.key}
                  className={cn('absolute', opt.key === '车' ? 'z-8' : 'z-20')}
                  data-material-key={opt.key}
                  style={{
                    top: opt.position.top,
                    left: opt.position.left,
                    bottom: opt.position.bottom,
                    right: opt.position.right,
                  }}
                >
                  <Image src={getStaticImage(opt.assetSrc)} alt={opt.key} />
                </div>
              ))}
        </div>
      </div>

      {/* 顶部菜单 */}
      <div className="absolute left-0 top-4 z-30 w-full">
        <TopMenuPanel
          activeBlock={activeBlock}
          selectedClothes={selectedClothes}
          selectedBackground={selectedBackground}
          selectedMaterials={selectedMaterials}
          allowedMaterialKeys={allowedMaterialKeys}
          onSelectClothes={setSelectedClothes}
          onSelectBackground={setSelectedBackground}
          onToggleMaterial={handleToggleMaterial}
        />
      </div>

      {/* 任务提示窗口 */}
      {activeBlock === '任务提示' && (
        <div
          className="absolute left-8 top-[26%] z-30 w-[1724px] h-[424px] bg-no-repeat"
          style={{
            backgroundImage: getBackgroundImage(`${STAR_NAME}/reflection/draw/创作任务面板`),
            backgroundSize: '100% 100%',
          }}
        >
          <div className="flex items-center justify-center pt-28">
            <div className="w-full text-center text-[#8B6914] font-medium leading-tight">
              <div className="text-3xl space-y-8">
                <div>①为三毛换装</div>
                <div>②搭配1个新时代场景</div>
                <div>③融入1-3个新时代元素</div>
                <div>④配1句简短正能量文字（不超过15个字）</div>
              </div>
            </div>
          </div>
        </div>
      )}

      {/* 右侧侧边栏 */}
      <div className="absolute right-[4px] top-[162px] z-40 w-[162px]">
        <div className="flex flex-col gap-4">
          {sidebarBlocks.map((blk) => (
            <button key={blk.key} type="button" onClick={() => setActiveBlock(blk.key)}>
              <Image
                className={cn(activeBlock === blk.key ? 'opacity-100' : 'opacity-60')}
                src={getStaticImage(blk.iconSrc)}
                alt={blk.key}
              />
            </button>
          ))}
        </div>
      </div>

      {/* 底部输入框 */}
      {showCaptionInput && (
        <div
          className="absolute left-20 bottom-2.5 bg-cover bg-center bg-no-repeat w-[1724px] h-[100px] z-40"
          style={{ backgroundImage: getBackgroundImage(`${STAR_NAME}/reflection/draw/写字底板`) }}
        >
          <div className="flex items-center justify-center">
            <input
              ref={captionInputRef}
              type="text"
              id="textInput"
              name="textInput"
              maxLength={15}
              value={captionText}
              onChange={(e) =>
                setCaptionText(Array.from(filterInput(e.target.value)).slice(0, 15).join(''))
              }
              className={cn(
                'w-260 h-24 bg-transparent',
                'text-4xl! text-[#8B6914] leading-none placeholder:text-3xl!'
              )}
              autoComplete="off"
              placeholder="提交之前，请给你创作的我配一句简短的正能量文字吧!（不超过15个字）"
            />
          </div>
        </div>
      )}

      {/* 底部按钮 */}
      <div className="absolute -left-10 bottom-0 z-50">
        <Image
          src={getStaticImage(`${STAR_NAME}/reflection/draw/返回`)}
          button
          onClick={() => navigate(`/${moduleName}/${STAR_NAME}/draw`)}
        />
      </div>
      <div className="absolute -right-10 bottom-0 z-50">
        <Image
          src={getStaticImage(`${STAR_NAME}/reflection/draw/提交作品`)}
          button
          className={isSubmitting ? 'opacity-70 pointer-events-none' : undefined}
          onClick={handleSubmitArtwork}
        />
      </div>

      <SceneHint when={submitErrorHintKey > 0} triggerKey={submitErrorHintKey} durationMs={3200}>
        作品生成失败，请稍后再试
      </SceneHint>

      {createdArtworkSrc && (
        <ExhibitFlipOverlay
          src={createdArtworkSrc}
          visible={showCreatedOverlay}
          // footerClassName="bottom-120"
          onEnterComplete={() => {
            setShowCompletionDialogue(true)
          }}
          onClose={() => {
            setShowCreatedOverlay(false)
          }}
          footer={<FlipActionButton onClick={handleCollectArtwork}>收藏</FlipActionButton>}
        />
      )}

      <SanmaoDialogueSteps
        visible={showCompletionDialogue}
        onVisibleChange={setShowCompletionDialogue}
        showMask={false}
        audioChannelId="zhangleping-draw-completion"
        zIndex={10000}
      >
        <SanmaoDialogueItem audioSrc={getPublicPath('audio/zhangleping/mp3_zhangleping_30_1.mp3')}>
          {COMPLETION_DIALOGUE}
        </SanmaoDialogueItem>
      </SanmaoDialogueSteps>
    </div>
  )
}

export default ZhanglepingDraw1