'use client'

import { useState } from 'react'

// 模擬分析後的詞彙資料
interface WordAnalysis {
  word: string
  translation: string
  definition: string
  partOfSpeech: string
  pronunciation: string
  synonyms: string[]
  isPhrase: boolean
  phraseInfo?: {
    phrase: string
    meaning: string
    warning: string
  }
}

interface ClickableTextProps {
  text: string
  analysis?: Record<string, WordAnalysis>
  onWordClick?: (word: string, analysis: WordAnalysis) => void
}

export function ClickableText({ text, analysis, onWordClick }: ClickableTextProps) {
  const [selectedWord, setSelectedWord] = useState<string | null>(null)
  const [popupPosition, setPopupPosition] = useState({ x: 0, y: 0 })

  // 將文字分割成單字
  const words = text.split(/(\s+|[.,!?;:])/g).filter(word => word.trim())

  const handleWordClick = (word: string, event: React.MouseEvent) => {
    const cleanWord = word.toLowerCase().replace(/[.,!?;:]/g, '')
    const wordAnalysis = analysis?.[cleanWord]

    if (wordAnalysis) {
      const rect = event.currentTarget.getBoundingClientRect()
      setPopupPosition({
        x: rect.left + rect.width / 2,
        y: rect.top - 10
      })
      setSelectedWord(cleanWord)
      onWordClick?.(cleanWord, wordAnalysis)
    }
  }

  const closePopup = () => {
    setSelectedWord(null)
  }

  const getWordClass = (word: string) => {
    const cleanWord = word.toLowerCase().replace(/[.,!?;:]/g, '')
    const wordAnalysis = analysis?.[cleanWord]

    if (!wordAnalysis) return "cursor-default"

    const baseClass = "cursor-pointer transition-all duration-200 hover:bg-blue-100 rounded px-1"

    if (wordAnalysis.isPhrase) {
      return `${baseClass} bg-yellow-100 border-b-2 border-yellow-400 hover:bg-yellow-200`
    }

    return `${baseClass} hover:bg-blue-200 border-b border-blue-300`
  }

  return (
    <div className="relative">
      {/* 點擊區域遮罩 */}
      {selectedWord && (
        <div
          className="fixed inset-0 z-10"
          onClick={closePopup}
        />
      )}

      {/* 文字內容 */}
      <div className="text-lg leading-relaxed">
        {words.map((word, index) => {
          if (word.trim() === '') return <span key={index}>{word}</span>

          return (
            <span
              key={index}
              className={getWordClass(word)}
              onClick={(e) => handleWordClick(word, e)}
            >
              {word}
            </span>
          )
        })}
      </div>

      {/* 彈出視窗 */}
      {selectedWord && analysis?.[selectedWord] && (
        <div
          className="fixed z-20 bg-white border border-gray-300 rounded-lg shadow-lg p-4 w-80 max-w-sm"
          style={{
            left: `${popupPosition.x}px`,
            top: `${popupPosition.y}px`,
            transform: 'translate(-50%, -100%)',
          }}
        >
          <div className="space-y-3">
            {/* 標題 */}
            <div className="flex items-center justify-between">
              <h3 className="text-lg font-bold text-gray-900">
                {analysis[selectedWord].word}
              </h3>
              <button
                onClick={closePopup}
                className="text-gray-400 hover:text-gray-600"
              >
                ✕
              </button>
            </div>

            {/* 片語警告 */}
            {analysis[selectedWord].isPhrase && analysis[selectedWord].phraseInfo && (
              <div className="bg-yellow-50 border border-yellow-200 rounded-lg p-3">
                <div className="flex items-start gap-2">
                  <div className="text-yellow-600 text-lg">⚠️</div>
                  <div>
                    <div className="text-sm font-medium text-yellow-800">
                      注意：這個單字屬於片語
                    </div>
                    <div className="text-sm text-yellow-700 mt-1">
                      <strong>片語：</strong>{analysis[selectedWord].phraseInfo.phrase}
                    </div>
                    <div className="text-sm text-yellow-700">
                      <strong>意思：</strong>{analysis[selectedWord].phraseInfo.meaning}
                    </div>
                  </div>
                </div>
              </div>
            )}

            {/* 詞性和發音 */}
            <div className="flex items-center gap-4">
              <span className="text-sm bg-gray-100 px-2 py-1 rounded">
                {analysis[selectedWord].partOfSpeech}
              </span>
              <span className="text-sm text-gray-600">
                {analysis[selectedWord].pronunciation}
              </span>
              <button className="text-blue-600 hover:text-blue-800">
                <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15.536 8.464a5 5 0 010 7.072m2.828-9.9a9 9 0 010 12.728M5.586 15H4a1 1 0 01-1-1v-4a1 1 0 011-1h1.586l4.707-4.707C10.923 3.663 12 4.109 12 5v14c0 .891-1.077 1.337-1.707.707L5.586 15z" />
                </svg>
              </button>
            </div>

            {/* 翻譯 */}
            <div>
              <div className="text-sm font-medium text-gray-700">翻譯</div>
              <div className="text-base text-gray-900">{analysis[selectedWord].translation}</div>
            </div>

            {/* 定義 */}
            <div>
              <div className="text-sm font-medium text-gray-700">定義</div>
              <div className="text-sm text-gray-600">{analysis[selectedWord].definition}</div>
            </div>

            {/* 同義詞 */}
            {analysis[selectedWord].synonyms.length > 0 && (
              <div>
                <div className="text-sm font-medium text-gray-700">同義詞</div>
                <div className="flex flex-wrap gap-1 mt-1">
                  {analysis[selectedWord].synonyms.map((synonym, idx) => (
                    <span
                      key={idx}
                      className="text-xs bg-blue-100 text-blue-700 px-2 py-1 rounded-full"
                    >
                      {synonym}
                    </span>
                  ))}
                </div>
              </div>
            )}
          </div>
        </div>
      )}
    </div>
  )
}