初始化
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Weiming
205
server.js
Normal file
205
server.js
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@@ -0,0 +1,205 @@
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const http = require('http');
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const fs = require('fs');
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const path = require('path');
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const url = require('url');
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const ROOT = __dirname;
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const CONFIG_PATH = path.join(ROOT, 'project.config.json');
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const TEMPLATE_HTML = path.join(ROOT, '飞书审批配置文件_V1.0.html');
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const ADDRESS_REGIONS_JS = path.join(ROOT, 'address-regions.js');
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function loadProjectConfig() {
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try {
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if (fs.existsSync(CONFIG_PATH)) return JSON.parse(fs.readFileSync(CONFIG_PATH, 'utf8'));
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} catch (e) {}
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return { projectId: 'approval_of_design', port: 8080, host: '0.0.0.0', label: '飞书审批配置服务' };
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}
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const PROJECT = loadProjectConfig();
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const PORT = Number(process.env.PORT) || PROJECT.port || 8080;
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const HOST = process.env.HOST || PROJECT.host || '0.0.0.0';
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const NODE_MAJOR = parseInt(String(process.versions.node).split('.')[0], 10);
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if (NODE_MAJOR < 16) {
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console.error('[ERROR] Node.js 16.x or later is required. Current: ' + process.version);
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process.exit(1);
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}
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let templateCache = null;
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function readTemplate() {
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if (!templateCache) {
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templateCache = fs.readFileSync(TEMPLATE_HTML, 'utf8');
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}
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return templateCache;
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}
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function reloadTemplate() {
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templateCache = null;
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return readTemplate();
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}
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function safeJsonForScript(value) {
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return JSON.stringify(value).replace(/<\//g, '\\u003c/');
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}
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function renderBootScript(config, mode) {
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const project = {
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id: PROJECT.projectId || 'approval_of_design',
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label: PROJECT.label || '飞书审批配置服务'
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};
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return [
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'<script id="app-boot">',
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'window.APP_PROJECT = ' + safeJsonForScript(project) + ';',
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"window.APP_MODE = '" + mode + "';",
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'window.__INITIAL_CONFIG__ = ' + safeJsonForScript(config) + ';',
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'</script>'
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].join('\n');
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}
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function injectBoot(html, config, mode) {
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return html.replace(/<script id="app-boot">[\s\S]*?<\/script>/, renderBootScript(config, mode));
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}
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function inlineAddressRegions(html) {
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if (!fs.existsSync(ADDRESS_REGIONS_JS)) return html;
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const js = fs.readFileSync(ADDRESS_REGIONS_JS, 'utf8');
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return html.replace(
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/<script src="address-regions\.js"><\/script>/,
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'<script>\n' + js + '\n</script>'
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);
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}
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function prepareHtml(config, mode) {
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return inlineAddressRegions(injectBoot(readTemplate(), config, mode));
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}
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function sanitizeFilename(name) {
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return String(name || '审批配置')
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.replace(/[<>:"/\\|?*\x00-\x1f]/g, '_')
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.replace(/\s+/g, '_')
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.slice(0, 80) || '审批配置';
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}
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function sendJson(res, status, data) {
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res.writeHead(status, { 'Content-Type': 'application/json; charset=utf-8' });
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res.end(JSON.stringify(data));
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}
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function readBody(req, limit) {
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const maxBytes = limit || 20 * 1024 * 1024;
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return new Promise(function (resolve, reject) {
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var body = '';
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var size = 0;
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req.on('data', function (chunk) {
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size += chunk.length;
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if (size > maxBytes) {
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reject(new Error('request body too large'));
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req.destroy();
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return;
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}
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body += chunk;
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});
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req.on('end', function () { resolve(body); });
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req.on('error', reject);
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});
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}
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function parseInitialConfigFromHtml(html) {
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const match = html.match(/window\.__INITIAL_CONFIG__\s*=\s*([\s\S]*?);\s*(?:\n|<\/script>)/);
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if (!match) return null;
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try {
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return JSON.parse(match[1]);
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} catch (e) {
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return null;
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}
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}
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const server = http.createServer(async (req, res) => {
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res.setHeader('Access-Control-Allow-Origin', '*');
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res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
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res.setHeader('Access-Control-Allow-Headers', 'Content-Type');
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if (req.method === 'OPTIONS') {
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res.writeHead(204);
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res.end();
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return;
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}
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const parsed = url.parse(req.url, true);
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const pathname = parsed.pathname;
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try {
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if (req.method === 'GET' && (pathname === '/' || pathname === '/editor')) {
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const initial = parsed.query.config ? JSON.parse(parsed.query.config) : null;
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const html = prepareHtml(initial, 'server');
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res.writeHead(200, { 'Content-Type': 'text/html; charset=utf-8', 'Cache-Control': 'no-store' });
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res.end(html);
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return;
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}
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if (req.method === 'GET' && pathname === '/address-regions.js') {
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if (!fs.existsSync(ADDRESS_REGIONS_JS)) {
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res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
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res.end('address-regions.js not found');
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return;
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}
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res.writeHead(200, { 'Content-Type': 'application/javascript; charset=utf-8', 'Cache-Control': 'no-store' });
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res.end(fs.readFileSync(ADDRESS_REGIONS_JS, 'utf8'));
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return;
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}
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if (req.method === 'GET' && pathname === '/api/health') {
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sendJson(res, 200, { ok: true, service: PROJECT.label, projectId: PROJECT.projectId });
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return;
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}
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if (req.method === 'POST' && pathname === '/api/export') {
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const body = await readBody(req);
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const config = JSON.parse(body);
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config.exportedAt = new Date().toISOString();
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config.projectId = PROJECT.projectId;
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const html = prepareHtml(config, 'standalone');
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const filename = sanitizeFilename(config.approvalName) + '.html';
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res.writeHead(200, {
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'Content-Type': 'text/html; charset=utf-8',
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'Content-Disposition': 'attachment; filename="' + encodeURIComponent(filename) + '"',
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'Cache-Control': 'no-store'
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});
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res.end(html);
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return;
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}
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if (req.method === 'POST' && pathname === '/api/import') {
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const body = await readBody(req);
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const payload = JSON.parse(body);
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let config = null;
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if (payload.config) {
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config = payload.config;
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} else if (payload.html) {
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config = parseInitialConfigFromHtml(payload.html);
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}
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if (!config) {
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sendJson(res, 400, { ok: false, error: 'invalid import payload' });
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return;
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}
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sendJson(res, 200, { ok: true, config });
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return;
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}
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if (req.method === 'POST' && pathname === '/api/reload-template') {
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reloadTemplate();
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sendJson(res, 200, { ok: true });
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return;
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}
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res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
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res.end('Not Found');
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} catch (err) {
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sendJson(res, 500, { ok: false, error: err.message || 'server error' });
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}
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});
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server.listen(PORT, HOST, () => {
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console.log('[' + (PROJECT.label || 'approval') + '] http://' + HOST + ':' + PORT);
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});
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