// server/http/common.js — the helpers every HTTP route shares: URL split, the error page and JSON replies.
// Moved from server/index.js.
const escapeHtml = (s) => String(s).replace(/[&<>"']/g, (c) => ({ '&': '&', '<': '<', '>': '>', '"': '"', "'": ''' })[c]);
function errorPage(status, title, detail = '') {
return `
${status} · 卫戍协议：盟约${status}
${escapeHtml(title)}
${detail ? `${escapeHtml(detail)}
` : ''}返回首页 · Back to home
`;
}
export function sendError(req, res, status, title, detail) {
if (res.headersSent) { res.destroy(); return; }
const body = Buffer.from(errorPage(status, title, detail));
res.writeHead(status, { 'Content-Type': 'text/html; charset=utf-8', 'Content-Length': body.length, 'Cache-Control': 'no-store' });
res.end(req.method === 'HEAD' ? undefined : body);
}
export function sendJson(req, res, status, obj) {
const body = Buffer.from(JSON.stringify(obj));
res.writeHead(status, { 'Content-Type': 'application/json; charset=utf-8', 'Content-Length': body.length, 'Cache-Control': 'no-store' });
res.end(req.method === 'HEAD' ? undefined : body);
}
/** Split an absolute request URL into raw path + query (also accepts absolute-form URLs). */
export function splitUrl(url) {
let u = url || '/';
if (/^[a-z][a-z0-9+.-]*:\/\//i.test(u)) {
try { const parsed = new URL(u); u = parsed.pathname + parsed.search; } catch { return null; }
}
const q = u.indexOf('?');
const hashless = (s) => { const h = s.indexOf('#'); return h >= 0 ? s.slice(0, h) : s; };
return q >= 0 ? { rawPath: hashless(u.slice(0, q)), query: hashless(u.slice(q + 1)) } : { rawPath: hashless(u), query: '' };
}