/**
* Standalone server mode (--serve)
* Starts the live server without the MCP stdio transport,
* registers existing diagrams, and opens the gallery in the browser.
*/
import { execFile } from "child_process";
import { promisify } from "util";
import { readdir, access } from "fs/promises";
import { join } from "path";
import { ensureLiveServer, addLiveDiagram } from "./live-server.js";
import { getLiveDir, getOpenCommand } from "./file-utils.js";
import { FILE_NAMES } from "./constants.js";
const execFileAsync = promisify(execFile);
async function registerExistingDiagrams(): Promise<number> {
const liveDir = getLiveDir();
let registered = 0;
let entries;
try {
entries = await readdir(liveDir, { withFileTypes: true });
} catch {
return 0;
}
for (const entry of entries) {
if (!entry.isDirectory()) continue;
const svgPath = join(liveDir, entry.name, FILE_NAMES.DIAGRAM_SVG);
try {
await access(svgPath);
await addLiveDiagram(entry.name, svgPath);
registered++;
} catch {
// Skip directories without a rendered SVG
}
}
return registered;
}
export async function startServeMode(): Promise<void> {
const diagramCount = await registerExistingDiagrams();
const port = await ensureLiveServer();
const galleryUrl = `http://localhost:${port}/`;
console.log(`Serving ${diagramCount} diagram(s) at ${galleryUrl}`);
await execFileAsync(getOpenCommand(), [galleryUrl]);
}
