feat: 初始化 bigdata 题库与 quiz-app 刷题系统

quiz-app/src/App.css

@@ -0,0 +1,184 @@
+.counter {
+  font-size: 16px;
+  padding: 5px 10px;
+  border-radius: 5px;
+  color: var(--accent);
+  background: var(--accent-bg);
+  border: 2px solid transparent;
+  transition: border-color 0.3s;
+  margin-bottom: 24px;
+
+  &:hover {
+    border-color: var(--accent-border);
+  }
+  &:focus-visible {
+    outline: 2px solid var(--accent);
+    outline-offset: 2px;
+  }
+}
+
+.hero {
+  position: relative;
+
+  .base,
+  .framework,
+  .vite {
+    inset-inline: 0;
+    margin: 0 auto;
+  }
+
+  .base {
+    width: 170px;
+    position: relative;
+    z-index: 0;
+  }
+
+  .framework,
+  .vite {
+    position: absolute;
+  }
+
+  .framework {
+    z-index: 1;
+    top: 34px;
+    height: 28px;
+    transform: perspective(2000px) rotateZ(300deg) rotateX(44deg) rotateY(39deg)
+      scale(1.4);
+  }
+
+  .vite {
+    z-index: 0;
+    top: 107px;
+    height: 26px;
+    width: auto;
+    transform: perspective(2000px) rotateZ(300deg) rotateX(40deg) rotateY(39deg)
+      scale(0.8);
+  }
+}
+
+#center {
+  display: flex;
+  flex-direction: column;
+  gap: 25px;
+  place-content: center;
+  place-items: center;
+  flex-grow: 1;
+
+  @media (max-width: 1024px) {
+    padding: 32px 20px 24px;
+    gap: 18px;
+  }
+}
+
+#next-steps {
+  display: flex;
+  border-top: 1px solid var(--border);
+  text-align: left;
+
+  & > div {
+    flex: 1 1 0;
+    padding: 32px;
+    @media (max-width: 1024px) {
+      padding: 24px 20px;
+    }
+  }
+
+  .icon {
+    margin-bottom: 16px;
+    width: 22px;
+    height: 22px;
+  }
+
+  @media (max-width: 1024px) {
+    flex-direction: column;
+    text-align: center;
+  }
+}
+
+#docs {
+  border-right: 1px solid var(--border);
+
+  @media (max-width: 1024px) {
+    border-right: none;
+    border-bottom: 1px solid var(--border);
+  }
+}
+
+#next-steps ul {
+  list-style: none;
+  padding: 0;
+  display: flex;
+  gap: 8px;
+  margin: 32px 0 0;
+
+  .logo {
+    height: 18px;
+  }
+
+  a {
+    color: var(--text-h);
+    font-size: 16px;
+    border-radius: 6px;
+    background: var(--social-bg);
+    display: flex;
+    padding: 6px 12px;
+    align-items: center;
+    gap: 8px;
+    text-decoration: none;
+    transition: box-shadow 0.3s;
+
+    &:hover {
+      box-shadow: var(--shadow);
+    }
+    .button-icon {
+      height: 18px;
+      width: 18px;
+    }
+  }
+
+  @media (max-width: 1024px) {
+    margin-top: 20px;
+    flex-wrap: wrap;
+    justify-content: center;
+
+    li {
+      flex: 1 1 calc(50% - 8px);
+    }
+
+    a {
+      width: 100%;
+      justify-content: center;
+      box-sizing: border-box;
+    }
+  }
+}
+
+#spacer {
+  height: 88px;
+  border-top: 1px solid var(--border);
+  @media (max-width: 1024px) {
+    height: 48px;
+  }
+}
+
+.ticks {
+  position: relative;
+  width: 100%;
+
+  &::before,
+  &::after {
+    content: '';
+    position: absolute;
+    top: -4.5px;
+    border: 5px solid transparent;
+  }
+
+  &::before {
+    left: 0;
+    border-left-color: var(--border);
+  }
+  &::after {
+    right: 0;
+    border-right-color: var(--border);
+  }
+}

quiz-app/src/App.tsx

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+import { useState, useEffect } from 'react';
+import questionsData from './questions.json';
+import './index.css';
+
+interface Question {
+  id: number;
+  source_id?: string;
+  source_file?: string;
+  page_number?: number;
+  title: string;
+  options: string[];
+  type: string;
+  answer: string;
+}
+
+export default function App() {
+  const [questions] = useState<Question[]>(questionsData);
+  const [currentQuestion, setCurrentQuestion] = useState<Question | null>(null);
+  const [selectedOptions, setSelectedOptions] = useState<string[]>([]);
+  const [isSubmitted, setIsSubmitted] = useState(false);
+  const [weights, setWeights] = useState<Record<number, number>>({});
+  const [history, setHistory] = useState<boolean[]>([]);
+  const [totalAnswered, setTotalAnswered] = useState(0);
+
+  // Load weights from localStorage on init
+  useEffect(() => {
+    const savedWeights = localStorage.getItem('quiz_weights');
+    if (savedWeights) {
+      setWeights(JSON.parse(savedWeights));
+    } else {
+      const initialWeights: Record<number, number> = {};
+      questions.forEach(q => {
+        initialWeights[q.id] = 1;
+      });
+      setWeights(initialWeights);
+    }
+
+    const savedHistory = localStorage.getItem('quiz_history');
+    if (savedHistory) {
+      setHistory(JSON.parse(savedHistory));
+    }
+    const savedTotal = localStorage.getItem('quiz_total');
+    if (savedTotal) {
+      setTotalAnswered(JSON.parse(savedTotal));
+    }
+  }, [questions]);
+
+  // Pick a random question based on weights
+  const pickRandomQuestion = (latestWeights?: Record<number, number>) => {
+    if (questions.length === 0) return;
+    
+    // Calculate total weight
+    let totalWeight = 0;
+    const currentWeights = latestWeights || weights;
+    questions.forEach(q => {
+      totalWeight += (currentWeights[q.id] || 1);
+    });
+
+    let randomNum = Math.random() * totalWeight;
+    let selectedQ = questions[0];
+
+    for (const q of questions) {
+      randomNum -= (currentWeights[q.id] || 1);
+      if (randomNum <= 0) {
+        selectedQ = q;
+        break;
+      }
+    }
+
+    setCurrentQuestion(selectedQ);
+    setSelectedOptions([]);
+    setIsSubmitted(false);
+  };
+
+  // Initial load
+  useEffect(() => {
+    if (Object.keys(weights).length > 0 && !currentQuestion) {
+      pickRandomQuestion();
+    }
+  }, [weights]);
+
+  const handleOptionClick = (optionLabel: string) => {
+    if (isSubmitted) return;
+
+    // extract letter A, B, C...
+    const letter = optionLabel.charAt(0);
+
+    if (currentQuestion?.type === '单选') {
+      setSelectedOptions([letter]);
+      handleSubmit([letter]);
+    } else {
+      // Multi-select
+      setSelectedOptions(prev => 
+        prev.includes(letter) 
+          ? prev.filter(l => l !== letter)
+          : [...prev, letter]
+      );
+    }
+  };
+
+  const handleSubmit = (autoSubmitOptions?: string[]) => {
+    const currentSelection = Array.isArray(autoSubmitOptions) ? autoSubmitOptions : selectedOptions;
+    if (currentSelection.length === 0 || !currentQuestion) return;
+
+    const userAns = [...currentSelection].sort().join('');
+    const isCorrect = userAns === currentQuestion.answer;
+
+    setIsSubmitted(true);
+
+    // Update stats (history of last 100)
+    const newHistory = [...history, isCorrect].slice(-100);
+    setHistory(newHistory);
+    localStorage.setItem('quiz_history', JSON.stringify(newHistory));
+    
+    const newTotal = totalAnswered + 1;
+    setTotalAnswered(newTotal);
+    localStorage.setItem('quiz_total', JSON.stringify(newTotal));
+
+    // Update weights
+    const newWeights = { ...weights };
+    const currentWeight = newWeights[currentQuestion.id] || 1;
+    
+    if (isCorrect) {
+      newWeights[currentQuestion.id] = Math.max(1, currentWeight - 1);
+    } else {
+      newWeights[currentQuestion.id] = currentWeight + 3; // Increase weight heavily on error
+    }
+    
+    setWeights(newWeights);
+    localStorage.setItem('quiz_weights', JSON.stringify(newWeights));
+
+    if (isCorrect) {
+      setTimeout(() => {
+        pickRandomQuestion(newWeights);
+      }, 1000);
+    }
+  };
+
+  if (!currentQuestion) return <div className="glass-card">Loading...</div>;
+
+  const userAns = [...selectedOptions].sort().join('');
+  const isCorrect = isSubmitted && userAns === currentQuestion.answer;
+
+  return (
+    <div className="glass-card">
+      <div className="header">
+        <span className="title-tag">{currentQuestion.type}</span>
+        <span style={{color: '#94a3b8', fontSize: '0.875rem'}}>
+          Weight: {weights[currentQuestion.id] || 1}
+        </span>
+      </div>
+
+      <div className="question-title">
+        {currentQuestion.title}
+      </div>
+
+      <div className="options-container">
+        {currentQuestion.options.map((opt, i) => {
+          const letter = opt.charAt(0);
+          const isSelected = selectedOptions.includes(letter);
+          
+          let className = 'option';
+          if (isSelected) className += ' selected';
+          
+          if (isSubmitted) {
+            className += ' disabled';
+            const isCorrectOption = currentQuestion.answer.includes(letter);
+            if (isCorrectOption) {
+              className += ' correct';
+            } else if (isSelected && !isCorrectOption) {
+              className += ' incorrect';
+            }
+          }
+
+          return (
+            <div 
+              key={i} 
+              className={className}
+              onClick={() => handleOptionClick(opt)}
+            >
+              {opt}
+            </div>
+          );
+        })}
+      </div>
+
+      {!isSubmitted ? (
+        <div className="action-container">
+          {currentQuestion.type !== '单选' && (
+            <button 
+              onClick={() => handleSubmit()}
+              disabled={selectedOptions.length === 0}
+            >
+              提交答案
+            </button>
+          )}
+        </div>
+      ) : (
+        <>
+          <div className={`feedback ${isCorrect ? 'correct' : 'incorrect'}`}>
+            <h3 style={{marginTop: 0, marginBottom: '0.5rem'}}>
+              {isCorrect ? '✅ 回答正确！' : '❌ 回答错误'}
+            </h3>
+            <p style={{margin: 0}}>
+              正确答案是：<strong>{currentQuestion.answer}</strong>
+            </p>
+            {!isCorrect && (
+              <div style={{marginTop: '0.5rem', fontSize: '0.9rem', color: '#64748b'}}>
+                <div>本题出处：题库第 {currentQuestion.source_id || currentQuestion.id} 题</div>
+                <div>来源文件：{currentQuestion.source_file || '未知'}</div>
+                <div>PDF页码：第 {currentQuestion.page_number || '?'} 页</div>
+              </div>
+            )}
+          </div>
+          <div className="action-container">
+            <button onClick={() => pickRandomQuestion()}>
+              {isCorrect ? '下一题 (1s后自动跳转)...' : '下一题'}
+            </button>
+          </div>
+        </>
+      )}
+
+      <div className="stats">
+        <span>已刷题：{totalAnswered} 道</span>
+        <span>近100题正确率：{history.length > 0 ? Math.round((history.filter(Boolean).length / history.length) * 100) : 0}%</span>
+      </div>
+    </div>
+  );
+}

quiz-app/src/assets/react.svg

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quiz-app/src/index.css

@@ -0,0 +1,212 @@
+:root {
+  font-family: 'Inter', system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  --bg-color: #0f172a;
+  --text-color: #f8fafc;
+  --card-bg: rgba(30, 41, 59, 0.7);
+  --card-border: rgba(255, 255, 255, 0.1);
+  --primary-color: #3b82f6;
+  --primary-hover: #2563eb;
+  --success-color: #10b981;
+  --error-color: #ef4444;
+  --option-bg: rgba(255, 255, 255, 0.05);
+  --option-hover: rgba(255, 255, 255, 0.1);
+  --option-selected: rgba(59, 130, 246, 0.2);
+  --option-border: rgba(255, 255, 255, 0.1);
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+  background-color: var(--bg-color);
+  color: var(--text-color);
+  background-image: 
+    radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
+    radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
+    radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
+  background-attachment: fixed;
+  background-size: cover;
+}
+
+#root {
+  max-width: 800px;
+  margin: 0 auto;
+  padding: 2rem;
+  width: 100%;
+  box-sizing: border-box;
+}
+
+.glass-card {
+  background: var(--card-bg);
+  backdrop-filter: blur(16px);
+  -webkit-backdrop-filter: blur(16px);
+  border: 1px solid var(--card-border);
+  border-radius: 24px;
+  padding: 2.5rem;
+  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
+  animation: slideUp 0.5s ease-out forwards;
+}
+
+@keyframes slideUp {
+  from {
+    opacity: 0;
+    transform: translateY(20px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+.header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 2rem;
+  border-bottom: 1px solid var(--card-border);
+  padding-bottom: 1rem;
+}
+
+.title-tag {
+  background: var(--primary-color);
+  color: white;
+  padding: 0.25rem 0.75rem;
+  border-radius: 9999px;
+  font-size: 0.875rem;
+  font-weight: 600;
+  letter-spacing: 0.05em;
+}
+
+.question-title {
+  font-size: 1.5rem;
+  font-weight: 600;
+  margin-bottom: 2rem;
+  line-height: 1.6;
+}
+
+.options-container {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.option {
+  display: flex;
+  align-items: center;
+  padding: 1rem 1.5rem;
+  border-radius: 12px;
+  background: var(--option-bg);
+  border: 1px solid var(--option-border);
+  cursor: pointer;
+  transition: all 0.2s ease;
+  font-size: 1.1rem;
+}
+
+.option:hover:not(.disabled) {
+  background: var(--option-hover);
+  transform: translateY(-2px);
+}
+
+.option.selected {
+  background: var(--option-selected);
+  border-color: var(--primary-color);
+}
+
+.option.correct {
+  background: rgba(16, 185, 129, 0.2);
+  border-color: var(--success-color);
+}
+
+.option.incorrect {
+  background: rgba(239, 68, 68, 0.2);
+  border-color: var(--error-color);
+}
+
+.option.disabled {
+  cursor: default;
+  opacity: 0.8;
+}
+
+.action-container {
+  margin-top: 2.5rem;
+  display: flex;
+  justify-content: flex-end;
+}
+
+button {
+  background: var(--primary-color);
+  color: white;
+  border: none;
+  padding: 0.875rem 2rem;
+  border-radius: 12px;
+  font-size: 1.1rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
+}
+
+button:hover:not(:disabled) {
+  background: var(--primary-hover);
+  transform: translateY(-2px);
+  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
+}
+
+button:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+.feedback {
+  margin-top: 2rem;
+  padding: 1.5rem;
+  border-radius: 12px;
+  animation: fadeIn 0.3s ease-out;
+}
+
+.feedback.correct {
+  background: rgba(16, 185, 129, 0.1);
+  border-left: 4px solid var(--success-color);
+}
+
+.feedback.incorrect {
+  background: rgba(239, 68, 68, 0.1);
+  border-left: 4px solid var(--error-color);
+}
+
+@keyframes fadeIn {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+
+.stats {
+  display: flex;
+  justify-content: space-between;
+  font-size: 0.875rem;
+  color: #94a3b8;
+  margin-top: 1.5rem;
+  padding-top: 1.5rem;
+  border-top: 1px solid var(--card-border);
+}
+
+@media (max-width: 600px) {
+  #root {
+    padding: 1rem;
+  }
+  .glass-card {
+    padding: 1.5rem;
+  }
+  .question-title {
+    font-size: 1.25rem;
+  }
+  .option {
+    padding: 0.875rem 1rem;
+    font-size: 1rem;
+  }
+}

quiz-app/src/main.tsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)