minor bugfixes

nextjs/src/lib/config.js

@@ -5,15 +5,33 @@ function parseInteger(value, fallback) {
   return Number.isFinite(parsed) ? parsed : fallback;
 }
 
+function normalizeBaseUrl(value) {
+  const raw = String(value || '').trim();
+  if (!raw) {
+    return '';
+  }
+
+  const withProtocol = raw.includes('://') ? raw : `https://${raw}`;
+
+  try {
+    const parsed = new URL(withProtocol);
+    return `${parsed.protocol}//${parsed.host}`;
+  } catch {
+    return '';
+  }
+}
+
 export const managementBasePath = '/manage';
 export const dataDir = process.env.DATA_DIR || path.join(process.cwd(), 'data');
 export const dbPath = process.env.DB_PATH || path.join(dataDir, 'uploads.sqlite');
 export const shareDir = path.join(dataDir, '_share');
+export const serviceFqdn = String(process.env.SERVICE_FQDN || '').trim();
 export const adminHash = process.env.MANAGEMENT_ADMIN_HASH || '';
 export const uploadTtlSeconds = parseInteger(process.env.UPLOAD_TTL_SECONDS || '604800', 604800);
 export const maxRetentionSeconds = 90 * 24 * 60 * 60;
 export const maxUploadBytes = parseInteger(process.env.UPLOAD_MAX_BYTES || '0', 0);
 export const cookieSecure = process.env.COOKIE_SECURE === 'true';
+export const publicBaseUrl = normalizeBaseUrl(process.env.PUBLIC_BASE_URL || serviceFqdn);
 export const smtpHost = String(process.env.SMTP_HOST || '').trim();
 export const smtpPort = parseInteger(process.env.SMTP_PORT || '587', 587);
 export const smtpUser = String(process.env.SMTP_USER || '').trim();