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+// build-h5-smart.js - 带智能缓存的 H5 构建脚本
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+const fs = require('fs');
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+const path = require('path');
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+const crypto = require('crypto');
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+const { execSync } = require('child_process');
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+const { glob } = require('glob');
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+
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+const CACHE_MARKER_FILE = 'dist/h5/.build-cache-marker';
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+const SOURCE_PATTERNS = ['src/**/*', 'config/**/*', 'package-lock.json', '.build/h5_for_production.js'];
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+
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+// 计算文件哈希
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+function hashFile(filePath) {
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+ if (!fs.existsSync(filePath)) {
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+ return '';
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+ }
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+ const content = fs.readFileSync(filePath);
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+ return crypto.createHash('md5').update(content).digest('hex');
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+}
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+
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+// 计算多个文件的组合哈希
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+async function hashFiles(patterns) {
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+ const hashes = [];
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+
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+ for (const pattern of patterns) {
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+ try {
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+ // 使用 glob 查找匹配的文件
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+ const files = await glob(pattern, {
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+ cwd: process.cwd(),
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+ ignore: ['**/node_modules/**', '**/dist/**', '**/.git/**'],
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+ nodir: true
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+ });
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+
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+ // 对每个文件计算哈希
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+ for (const file of files.sort()) {
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+ const hash = hashFile(file);
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+ if (hash) {
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+ hashes.push(`${file}:${hash}`);
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+ }
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+ }
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+ } catch (error) {
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+ console.warn(`警告: 无法处理模式 ${pattern}: ${error.message}`);
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+ }
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+ }
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+
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+ // 将所有哈希组合成一个总哈希
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+ const combined = hashes.join('\n');
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+ return crypto.createHash('md5').update(combined).digest('hex');
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+}
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+
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+// 检查 H5 构建缓存
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+async function checkH5BuildCache() {
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+ console.log('🔍 检查 H5 构建缓存...');
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+
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+ // 检查构建产物是否存在
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+ if (!fs.existsSync('dist/h5')) {
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+ console.log('❌ 构建产物不存在');
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+ return false;
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+ }
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+
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+ // 检查缓存标记文件
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+ if (!fs.existsSync(CACHE_MARKER_FILE)) {
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+ console.log('❌ 缓存标记文件不存在');
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+ return false;
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+ }
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+
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+ try {
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+ // 读取缓存的哈希值
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+ const cachedHash = fs.readFileSync(CACHE_MARKER_FILE, 'utf8').trim();
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+
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+ // 计算当前源文件的哈希值
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+ console.log('📊 计算源文件哈希...');
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+ const currentHash = await hashFiles(SOURCE_PATTERNS);
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+
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+ console.log(` 缓存哈希: ${cachedHash.substring(0, 8)}...`);
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+ console.log(` 当前哈希: ${currentHash.substring(0, 8)}...`);
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+
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+ if (cachedHash === currentHash) {
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+ console.log('✅ H5 构建缓存命中！');
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+ return true;
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+ } else {
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+ console.log('❌ 源文件已更改，需要重新构建');
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+ return false;
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+ }
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+ } catch (error) {
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+ console.error('⚠️ 检查缓存时出错:', error.message);
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+ return false;
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+ }
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+}
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+
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+// 保存构建缓存标记
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+async function saveBuildCacheMarker() {
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+ console.log('💾 保存构建缓存标记...');
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+
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+ try {
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+ const currentHash = await hashFiles(SOURCE_PATTERNS);
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+
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+ // 确保目录存在
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+ const markerDir = path.dirname(CACHE_MARKER_FILE);
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+ if (!fs.existsSync(markerDir)) {
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+ fs.mkdirSync(markerDir, { recursive: true });
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+ }
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+
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+ fs.writeFileSync(CACHE_MARKER_FILE, currentHash);
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+ console.log(`✅ 缓存标记已保存: ${currentHash.substring(0, 8)}...`);
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+ } catch (error) {
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+ console.error('⚠️ 保存缓存标记时出错:', error.message);
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+ }
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+}
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+
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+// 执行 H5 构建
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+function buildH5() {
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+ console.log('🔨 开始构建 H5...');
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+
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+ try {
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+ execSync('node .build/h5_for_production.js', {
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+ stdio: 'inherit',
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+ cwd: process.cwd()
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+ });
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+ console.log('✅ H5 构建完成');
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+ return true;
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+ } catch (error) {
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+ console.error('❌ H5 构建失败:', error.message);
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+ return false;
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+ }
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+}
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+
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+// 主函数
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+async function main() {
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+ console.log('🚀 智能 H5 构建系统');
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+ console.log('====================\n');
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+
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+ try {
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+ // 检查缓存
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+ const cacheHit = await checkH5BuildCache();
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+
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+ if (cacheHit) {
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+ console.log('\n🎉 使用缓存的构建产物，跳过构建步骤');
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+ return;
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+ }
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+
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+ // 需要重新构建
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+ console.log('\n📦 执行 H5 构建...');
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+ const success = buildH5();
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+
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+ if (success) {
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+ // 保存新的缓存标记
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+ await saveBuildCacheMarker();
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+ console.log('\n🎉 构建成功！');
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+ } else {
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+ console.error('\n❌ 构建失败');
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+ process.exit(1);
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+ }
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+
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+ } catch (error) {
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+ console.error('❌ 错误:', error.message);
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+ process.exit(1);
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+ }
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+}
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+
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+// 运行
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+main();
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dengdx