import { useState, useEffect, useMemo, useCallback, useRef } from 'react'
import { AnimatePresence, motion } from 'framer-motion'
import { cn, getStaticImage } from '@/lib/utils'
import { Image, DragFill } from '@/components'
import type { DragFillResult } from '@/components'
import { ErrorAlert, SuccessAlert } from '@/components/layout'

export interface TowelSalesDialogProps {
  /** 是否可见 */
  visible?: boolean
  /** 关闭回调 */
  onClose?: () => void
  /** 完成回调 */
  onComplete?: () => void
}

/**
 * 毛巾推销语拖拽弹窗
 * - 左边显示4个可选话术
 * - 右边显示3个毛巾（堆叠显示）
 * - 拖拽话术到毛巾上，点亮对应的毛巾
 * - 3个都点亮后完成
 */
const TowelSalesDialog = ({ visible = true, onClose, onComplete }: TowelSalesDialogProps) => {
  const maskSrc = getStaticImage('components/蒙版遮罩')
  const backSrc = getStaticImage('components/关闭')

  // 毛巾图片资源（未点亮）
  const towel1 = getStaticImage('huangyanpei/reflection/scene4/12_002')
  const towel2 = getStaticImage('huangyanpei/reflection/scene4/12_003')
  const towel3 = getStaticImage('huangyanpei/reflection/scene4/12_004')

  // 毛巾图片资源（点亮）
  const towel1Lit = getStaticImage('huangyanpei/reflection/scene4/12_002_02')
  const towel2Lit = getStaticImage('huangyanpei/reflection/scene4/12_003_02')
  const towel3Lit = getStaticImage('huangyanpei/reflection/scene4/12_004_03')

  const [mounted, setMounted] = useState(false)
  const [value, setValue] = useState<DragFillResult[]>([])
  const [errorVisible, setErrorVisible] = useState(false)
  const [successVisible, setSuccessVisible] = useState(false)
  const completedRef = useRef(false)

  // SSR 兼容
  useEffect(() => {
    setMounted(true)
  }, [])

  // 重置游戏状态
  useEffect(() => {
    if (visible) {
      setValue([])
      completedRef.current = false
      setErrorVisible(false)
      setSuccessVisible(false)
    }
  }, [visible])

  // 检查是否完成（3个毛巾都点亮）
  useEffect(() => {
    if (value.length === 3 && !completedRef.current) {
      completedRef.current = true
      // 显示成功提示
      setSuccessVisible(true)
    }
  }, [value])

  const handleClose = useCallback(
    (e: React.MouseEvent<HTMLImageElement>) => {
      e.stopPropagation()
      onClose?.()
    },
    [onClose]
  )

  // 关闭错误提示
  const handleErrorClose = useCallback(() => {
    setErrorVisible(false)
  }, [])

  // 关闭成功提示
  const handleSuccessContinue = useCallback(() => {
    setSuccessVisible(false)
    // 关闭提示后，完成并关闭弹窗
    onComplete?.()
    onClose?.()
  }, [onComplete, onClose])

  // 可选话术选项
  const options = useMemo(
    () => [
      {
        value: 'option1',
        label: 'A.这是中华职校生产的国货，质量比洋货还好！',
      },
      {
        value: 'option2',
        label: 'B.价格便宜，量大从优，诚信经营绝不掺假。',
      },
      {
        value: 'option3',
        label: 'C.买国货就是支持实业救国，为国家出一份力！',
      },
      {
        value: 'option4',
        label: 'D.我只管赚钱，东西好不好不管哦。',
      },
    ],
    []
  )

  // 转换为 DragFill 的 blanks
  const blanks = useMemo(
    () => [
      { id: 'towel1', label: '毛巾1' },
      { id: 'towel2', label: '毛巾2' },
      { id: 'towel3', label: '毛巾3' },
    ],
    []
  )

  // 处理拖拽结果变化
  const handleValueChange = useCallback((newValue: DragFillResult[]) => {
    // 检查是否选择了错误的选项（option4）
    const hasOption4 = newValue.some((result) => result.optionValue === 'option4')

    if (hasOption4) {
      // 显示错误提示
      setErrorVisible(true)
      // 移除 option4，保留其他选项
      const filteredValue = newValue.filter((result) => result.optionValue !== 'option4')
      setValue(filteredValue)
    } else {
      // 限制最多3个
      if (newValue.length <= 3) {
        setValue(newValue)
      }
    }
  }, [])

  // 检查毛巾是否被点亮
  const isTowelLit = useCallback(
    (towelId: string) => {
      return value.some((result) => result.blankId === towelId)
    },
    [value]
  )

  const getTowelText = useCallback(
    (towelId: string) => {
      const result = value.find((item) => item.blankId === towelId)
      return options.find((option) => option.value === result?.optionValue)?.label
    },
    [options, value]
  )

  // 样式
  const overlayStyle = useMemo<React.CSSProperties>(
    () => ({
      position: 'fixed',
      inset: 0,
      zIndex: 9999,
      pointerEvents: 'none',
    }),
    []
  )

  if (!mounted) return null

  const content = (
    <AnimatePresence>
      {visible && (
        <motion.div
          key="towel-sales-dialog"
          style={overlayStyle}
          initial={{ opacity: 0 }}
          animate={{ opacity: 1 }}
          exit={{ opacity: 0 }}
          transition={{ duration: 0.3, ease: 'easeInOut' }}
        >
          <div
            className={cn('absolute inset-0 flex flex-col', 'bg-black/70')}
            style={{ pointerEvents: 'auto' }}
          >
            {/* 背景蒙版 */}
            {maskSrc && (
              <Image
                src={maskSrc}
                className="absolute inset-0 w-full h-full object-cover select-none pointer-events-none"
                aria-hidden
              />
            )}

            {/* 返回按钮 */}
            {onClose && (
              <Image
                src={backSrc}
                onClick={handleClose}
                alt="返回"
                className="absolute top-5 right-5 z-20"
                button
              />
            )}

            {/* 内容区域 */}
            <div className="relative z-10 w-full h-full flex flex-col px-30 py-16 pt-30 text-[#432800]">
              <div className="w-full h-full flex flex-col">
                {/* 顶部：题目文本和毛巾区域 */}
                <div className="flex justify-between gap-10 mb-8">
                  {/* 题目文本 */}
                  <div className="flex-1">
                    <div className="text-4xl leading-relaxed">
                      【拖拽】从以下话术里，挑选三句组成你的推销语，放置在国货毛巾上。
                    </div>
                  </div>

                  {/* 右侧：毛巾区域 */}
                  <div className="w-180 flex flex-col items-center">
                    {/* 毛巾堆叠区域 */}
                    <div className="relative w-full flex flex-col">
                      {/* 毛巾1 */}
                      <div
                        data-blank-id="towel1"
                        className="relative w-full flex items-center justify-center transition-all duration-300 rounded-2xl"
                      >
                        <img
                          src={isTowelLit('towel1') ? towel1Lit : towel1}
                          draggable={false}
                          alt="毛巾1"
                          className="w-full h-full object-contain"
                        />
                        {getTowelText('towel1') && (
                          <div className="absolute inset-0 flex items-center justify-center text-center text-3xl font-bold leading-snug text-[#432800] pointer-events-none">
                            {getTowelText('towel1')}
                          </div>
                        )}
                      </div>

                      {/* 毛巾2 */}
                      <div
                        data-blank-id="towel2"
                        className="relative w-full flex items-center justify-center transition-all duration-300 rounded-2xl"
                      >
                        <img
                          src={isTowelLit('towel2') ? towel2Lit : towel2}
                          draggable={false}
                          alt="毛巾2"
                          className="w-full h-full object-contain"
                        />
                        {getTowelText('towel2') && (
                          <div className="absolute inset-0 flex items-center justify-center text-center text-3xl font-bold leading-snug text-[#432800] pointer-events-none">
                            {getTowelText('towel2')}
                          </div>
                        )}
                      </div>

                      {/* 毛巾3 */}
                      <div
                        data-blank-id="towel3"
                        className="relative w-full flex items-center justify-center transition-all duration-300 rounded-2xl"
                      >
                        <img
                          src={isTowelLit('towel3') ? towel3Lit : towel3}
                          draggable={false}
                          alt="毛巾3"
                          className="w-full h-full object-contain"
                        />
                        {getTowelText('towel3') && (
                          <div className="absolute inset-0 flex items-center justify-center text-center text-3xl font-bold leading-snug text-[#432800] pointer-events-none">
                            {getTowelText('towel3')}
                          </div>
                        )}
                      </div>
                    </div>
                  </div>
                </div>

                {/* 底部：可选话术区域 - 使用 DragFill */}
                <div className="flex-1">
                  <div className="text-5xl font-bold mb-6">答题区</div>
                  <DragFill
                    options={options}
                    blanks={blanks}
                    value={value}
                    onChange={handleValueChange}
                    allowDuplicate={false}
                    layout="horizontal-options"
                    optionClassName="grid grid-cols-2 gap-10"
                    hideLabels={true}
                    showSubmitButton={false}
                    className="w-full"
                    renderOption={(option, isUsed) => {
                      // const index = options.findIndex((opt) => opt.value === option.value)
                      return (
                        <div
                          className={cn(
                            'px-10 py-10 rounded-2xl border-3 text-3xl font-medium transition-all select-none',
                            isUsed
                              ? 'border-[#8b7355] bg-[#3d3329] text-[#a89378] cursor-not-allowed opacity-50'
                              : 'border-[#79471f] bg-black/20 text-white cursor-move hover:border-[#f0be75] hover:shadow-[0_12px_40px_rgba(240,190,117,0.7)]'
                          )}
                        >
                          {option.label}
                        </div>
                      )
                    }}
                    renderDragging={(option) => {
                      return (
                        <div className="w-[638px] h-[90px] flex items-center justify-center rounded-2xl border-3 text-2xl font-medium border-[#f0be75] bg-black/40 text-white shadow-[0_12px_40px_rgba(240,190,117,0.7)]">
                          {option.label}
                        </div>
                      )
                    }}
                    renderBlank={() => {
                      // 返回隐藏元素，实际的空白区域在页面中通过 data-blank-id 定位
                      return <div className="hidden" />
                    }}
                  />
                </div>
              </div>
            </div>

            {/* 错误提示 */}
            <ErrorAlert
              text="哎呀！经商要讲诚信，这句话不符合黄先生倡导的商科精神。"
              visible={errorVisible}
              onClose={handleErrorClose}
              onMaskClick={handleErrorClose}
              zIndex={10001}
            />

            {/* 成功提示 */}
            <SuccessAlert
              title="恭喜你, 推销语设计成功！"
              content="既突出了国货优势，又传递了爱国情怀，当年的商科学生也是这么做的。"
              visible={successVisible}
              onContinue={handleSuccessContinue}
            />
          </div>
        </motion.div>
      )}
    </AnimatePresence>
  )

  return content
}

export default TowelSalesDialog