401 lines
12 KiB
JavaScript
401 lines
12 KiB
JavaScript
// 背诵排序功能脚本
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let extractedItems = [];
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let sortedItems = [];
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let currentSpinIndex = 0;
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let isSpinning = false;
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// 颜色配置 - 转盘使用不同颜色
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const colors = [
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'#667eea', '#764ba2', '#f093fb', '#f5576c',
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'#4facfe', '#00f2fe', '#43e97b', '#38f9d7',
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'#fa709a', '#fee140', '#30cfd0', '#330867'
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];
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// DOM元素
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const textInput = document.getElementById('textInput');
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const extractBtn = document.getElementById('extractBtn');
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const extractedSection = document.getElementById('extractedSection');
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const itemsList = document.getElementById('itemsList');
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const itemCount = document.getElementById('itemCount');
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const sortBtn = document.getElementById('sortBtn');
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const wheelSection = document.getElementById('wheelSection');
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const wheel = document.getElementById('wheel');
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const spinBtn = document.getElementById('spinBtn');
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const currentItem = document.getElementById('currentItem');
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const resultSection = document.getElementById('resultSection');
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const sortedList = document.getElementById('sortedList');
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const resetBtn = document.getElementById('resetBtn');
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const exportTxtBtn = document.getElementById('exportTxtBtn');
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const exportJsonBtn = document.getElementById('exportJsonBtn');
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const exportCsvBtn = document.getElementById('exportCsvBtn');
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// 本地存储键名
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const STORAGE_KEY_EXTRACTED = 'recitation_extracted_items';
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const STORAGE_KEY_SORTED = 'recitation_sorted_items';
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const STORAGE_KEY_ORIGINAL_TEXT = 'recitation_original_text';
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// 页面加载时恢复数据
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window.addEventListener('DOMContentLoaded', () => {
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restoreFromStorage();
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});
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// 保存到本地存储
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function saveToStorage() {
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try {
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if (extractedItems.length > 0) {
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localStorage.setItem(STORAGE_KEY_EXTRACTED, JSON.stringify(extractedItems));
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}
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if (sortedItems.length > 0) {
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localStorage.setItem(STORAGE_KEY_SORTED, JSON.stringify(sortedItems));
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}
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if (textInput.value.trim()) {
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localStorage.setItem(STORAGE_KEY_ORIGINAL_TEXT, textInput.value);
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}
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} catch (e) {
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console.error('保存到本地存储失败:', e);
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}
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}
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// 从本地存储恢复
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function restoreFromStorage() {
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try {
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const savedExtracted = localStorage.getItem(STORAGE_KEY_EXTRACTED);
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const savedSorted = localStorage.getItem(STORAGE_KEY_SORTED);
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const savedText = localStorage.getItem(STORAGE_KEY_ORIGINAL_TEXT);
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if (savedText) {
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textInput.value = savedText;
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}
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if (savedExtracted) {
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extractedItems = JSON.parse(savedExtracted);
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displayExtractedItems(extractedItems);
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extractedSection.style.display = 'block';
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textInput.disabled = true;
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}
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if (savedSorted) {
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sortedItems = JSON.parse(savedSorted);
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displaySortedItems(sortedItems);
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createWheel(sortedItems);
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wheelSection.style.display = 'block';
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resultSection.style.display = 'block';
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}
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} catch (e) {
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console.error('从本地存储恢复失败:', e);
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}
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}
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// 清除本地存储
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function clearStorage() {
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localStorage.removeItem(STORAGE_KEY_EXTRACTED);
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localStorage.removeItem(STORAGE_KEY_SORTED);
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localStorage.removeItem(STORAGE_KEY_ORIGINAL_TEXT);
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}
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// 提取知识点
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extractBtn.addEventListener('click', async () => {
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const text = textInput.value.trim();
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if (!text) {
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alert('请输入要处理的文本');
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return;
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}
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extractBtn.disabled = true;
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extractBtn.textContent = '识别中...';
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try {
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const response = await fetch('/api/extract', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({ text })
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});
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const data = await response.json();
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if (data.success) {
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extractedItems = data.items;
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displayExtractedItems(extractedItems);
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extractedSection.style.display = 'block';
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textInput.disabled = true;
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saveToStorage(); // 保存到本地存储
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} else {
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alert(data.message || '提取失败');
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}
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} catch (error) {
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console.error('提取失败:', error);
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alert('提取失败，请检查网络连接');
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} finally {
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extractBtn.disabled = false;
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extractBtn.textContent = '识别知识点';
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}
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});
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// 显示提取的项目
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function displayExtractedItems(items) {
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itemCount.textContent = items.length;
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itemsList.innerHTML = '';
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items.forEach((item, index) => {
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const tag = document.createElement('span');
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tag.className = 'item-tag';
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tag.textContent = `${index + 1}. ${item}`;
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itemsList.appendChild(tag);
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});
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}
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// 随机排序
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sortBtn.addEventListener('click', async () => {
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if (extractedItems.length === 0) {
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alert('请先提取知识点');
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return;
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}
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sortBtn.disabled = true;
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sortBtn.textContent = '排序中...';
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try {
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const response = await fetch('/api/sort', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json'
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},
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body: JSON.stringify({ items: extractedItems })
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});
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const data = await response.json();
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if (data.success) {
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sortedItems = data.items;
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displaySortedItems(sortedItems);
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createWheel(sortedItems);
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wheelSection.style.display = 'block';
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resultSection.style.display = 'block';
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currentSpinIndex = 0;
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saveToStorage(); // 保存到本地存储
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} else {
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alert(data.message || '排序失败');
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}
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} catch (error) {
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console.error('排序失败:', error);
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alert('排序失败，请检查网络连接');
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} finally {
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sortBtn.disabled = false;
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sortBtn.textContent = '开始随机排序';
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}
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});
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// 创建转盘 - 使用SVG实现更真实的转盘效果
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function createWheel(items) {
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wheel.innerHTML = '';
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if (items.length === 0) return;
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const anglePerItem = 360 / items.length;
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const radius = 190; // 转盘半径（考虑边框）
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const centerX = 200;
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const centerY = 200;
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// 创建SVG转盘
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const svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
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svg.setAttribute('width', '400');
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svg.setAttribute('height', '400');
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svg.setAttribute('viewBox', '0 0 400 400');
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svg.style.position = 'absolute';
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svg.style.top = '0';
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svg.style.left = '0';
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svg.style.width = '100%';
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svg.style.height = '100%';
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items.forEach((item, index) => {
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const startAngle = (index * anglePerItem - 90) * Math.PI / 180;
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const endAngle = ((index + 1) * anglePerItem - 90) * Math.PI / 180;
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const x1 = centerX + radius * Math.cos(startAngle);
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const y1 = centerY + radius * Math.sin(startAngle);
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const x2 = centerX + radius * Math.cos(endAngle);
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const y2 = centerY + radius * Math.sin(endAngle);
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const largeArcFlag = anglePerItem > 180 ? 1 : 0;
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const pathData = [
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`M ${centerX} ${centerY}`,
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`L ${x1} ${y1}`,
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`A ${radius} ${radius} 0 ${largeArcFlag} 1 ${x2} ${y2}`,
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'Z'
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].join(' ');
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const path = document.createElementNS('http://www.w3.org/2000/svg', 'path');
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path.setAttribute('d', pathData);
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const colorIndex = index % colors.length;
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path.setAttribute('fill', colors[colorIndex]);
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path.setAttribute('stroke', '#fff');
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path.setAttribute('stroke-width', '2');
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svg.appendChild(path);
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// 添加文本
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const midAngle = (startAngle + endAngle) / 2;
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const textRadius = radius * 0.7;
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const textX = centerX + textRadius * Math.cos(midAngle);
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const textY = centerY + textRadius * Math.sin(midAngle);
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const text = document.createElementNS('http://www.w3.org/2000/svg', 'text');
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text.setAttribute('x', textX);
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text.setAttribute('y', textY);
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text.setAttribute('text-anchor', 'middle');
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text.setAttribute('fill', 'white');
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text.setAttribute('font-size', items.length > 8 ? '12' : '14');
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text.setAttribute('font-weight', 'bold');
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text.setAttribute('transform', `rotate(${(midAngle * 180 / Math.PI + 90)}, ${textX}, ${textY})`);
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const displayText = item.length > 12 ? item.substring(0, 12) + '...' : item;
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text.textContent = displayText;
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svg.appendChild(text);
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});
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wheel.appendChild(svg);
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}
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// 转动转盘
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spinBtn.addEventListener('click', () => {
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if (isSpinning || sortedItems.length === 0) return;
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isSpinning = true;
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spinBtn.disabled = true;
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currentItem.textContent = '转盘中...';
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// 随机选择一个索引（添加多圈旋转效果）
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const randomIndex = Math.floor(Math.random() * sortedItems.length);
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const spins = 3; // 转3圈
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const anglePerItem = 360 / sortedItems.length;
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// 计算目标角度：多转几圈 + 指向选中项
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const targetAngle = spins * 360 + (360 - (randomIndex * anglePerItem) - anglePerItem / 2);
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// 获取当前角度
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const svg = wheel.querySelector('svg');
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const currentAngle = getCurrentRotation(svg);
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// 计算总旋转角度（考虑当前角度）
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const totalRotation = currentAngle + targetAngle;
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svg.style.transform = `rotate(${totalRotation}deg)`;
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// 转盘停止后显示结果
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setTimeout(() => {
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currentItem.textContent = `${randomIndex + 1}. ${sortedItems[randomIndex]}`;
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currentSpinIndex = randomIndex;
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isSpinning = false;
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spinBtn.disabled = false;
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}, 3000);
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});
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// 获取当前旋转角度
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function getCurrentRotation(element) {
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const style = window.getComputedStyle(element);
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const transform = style.transform;
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if (transform === 'none') return 0;
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const matrix = new DOMMatrix(transform);
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const angle = Math.atan2(matrix.b, matrix.a) * (180 / Math.PI);
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return angle;
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}
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// 显示排序结果
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function displaySortedItems(items) {
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sortedList.innerHTML = '';
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items.forEach((item, index) => {
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const itemDiv = document.createElement('div');
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itemDiv.className = 'sorted-item';
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const numberSpan = document.createElement('span');
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numberSpan.className = 'sorted-item-number';
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numberSpan.textContent = index + 1;
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const textSpan = document.createElement('span');
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textSpan.className = 'sorted-item-text';
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textSpan.textContent = item;
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itemDiv.appendChild(numberSpan);
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itemDiv.appendChild(textSpan);
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sortedList.appendChild(itemDiv);
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});
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}
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// 导出功能
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exportTxtBtn.addEventListener('click', () => exportData('txt'));
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exportJsonBtn.addEventListener('click', () => exportData('json'));
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exportCsvBtn.addEventListener('click', () => exportData('csv'));
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function exportData(format) {
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if (sortedItems.length === 0) {
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alert('没有可导出的数据');
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return;
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}
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fetch('/api/export/sorted', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json; charset=utf-8'
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},
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body: JSON.stringify({
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items: sortedItems,
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format: format
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})
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})
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.then(response => {
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if (!response.ok) {
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throw new Error('导出失败');
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}
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return response.blob();
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})
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.then(blob => {
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const url = window.URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url;
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const timestamp = new Date().toISOString().slice(0, 19).replace(/[:-]/g, '').replace('T', '_');
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a.download = `背诵排序结果_${timestamp}.${format}`;
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document.body.appendChild(a);
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a.click();
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window.URL.revokeObjectURL(url);
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document.body.removeChild(a);
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})
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.catch(error => {
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console.error('导出失败:', error);
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alert('导出失败，请重试');
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});
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}
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// 重置
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resetBtn.addEventListener('click', () => {
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extractedItems = [];
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sortedItems = [];
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currentSpinIndex = 0;
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textInput.value = '';
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textInput.disabled = false;
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extractedSection.style.display = 'none';
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wheelSection.style.display = 'none';
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resultSection.style.display = 'none';
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wheel.innerHTML = '';
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const svg = wheel.querySelector('svg');
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if (svg) {
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svg.style.transform = 'rotate(0deg)';
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}
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currentItem.textContent = '';
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isSpinning = false;
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spinBtn.disabled = false;
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clearStorage(); // 清除本地存储
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});
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