v_1.7

server/sessions.js

@@ -0,0 +1,69 @@
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import { SESSION_DIR } from './config.js';
+
+// id -> meta. Backed by data/sessions/<id>/meta.json so restarts keep decks.
+const sessions = new Map();
+
+export async function initSessions() {
+  await fs.mkdir(SESSION_DIR, { recursive: true });
+  const entries = await fs.readdir(SESSION_DIR, { withFileTypes: true });
+  for (const entry of entries) {
+    if (!entry.isDirectory()) continue;
+    try {
+      const raw = await fs.readFile(path.join(SESSION_DIR, entry.name, 'meta.json'), 'utf8');
+      const meta = JSON.parse(raw);
+      // A deck still "processing" when the server died can never finish; mark it.
+      if (meta.status === 'processing') {
+        meta.status = 'error';
+        meta.error = 'Processing was interrupted by a restart. Please re-upload.';
+      }
+      sessions.set(meta.id, meta);
+    } catch {
+      // Skip unreadable session folders rather than crash on boot.
+    }
+  }
+}
+
+export function getSession(id) {
+  return sessions.get(id);
+}
+
+export function listSessions() {
+  return [...sessions.values()].sort((a, b) => b.createdAt - a.createdAt);
+}
+
+export function sessionDir(id) {
+  return path.join(SESSION_DIR, id);
+}
+
+export function outDir(id) {
+  return path.join(SESSION_DIR, id, 'out');
+}
+
+export async function saveSession(meta) {
+  sessions.set(meta.id, meta);
+  const dir = sessionDir(meta.id);
+  await fs.mkdir(dir, { recursive: true });
+  await fs.writeFile(path.join(dir, 'meta.json'), JSON.stringify(meta, null, 2));
+  return meta;
+}
+
+export async function deleteSession(id) {
+  sessions.delete(id);
+  await fs.rm(sessionDir(id), { recursive: true, force: true });
+}
+
+// Fields safe to expose to an audience member (no presenter token).
+export function publicMeta(meta) {
+  if (!meta) return null;
+  return {
+    id: meta.id,
+    title: meta.title,
+    kind: meta.kind,
+    status: meta.status,
+    error: meta.error || null,
+    viewerFile: meta.viewerFile || null,
+    createdAt: meta.createdAt
+  };
+}