bugfix: organization not selected problem fixed. being logged out too often fixed.

backend/src/common/jwt-duration.ts

@@ -0,0 +1,39 @@
+const MS_PER_UNIT: Record<string, number> = {
+  ms: 1,
+  s: 1000,
+  m: 60_000,
+  h: 3_600_000,
+  d: 86_400_000,
+  w: 7 * 86_400_000,
+  y: 365 * 86_400_000,
+};
+
+/** Parse jsonwebtoken-style durations (e.g. 15m, 30d, or seconds as plain number). */
+export function jwtDurationToMs(value: string): number {
+  const trimmed = value.trim();
+  if (!trimmed) {
+    throw new Error('JWT duration must not be empty');
+  }
+
+  if (/^\d+$/.test(trimmed)) {
+    return parseInt(trimmed, 10) * 1000;
+  }
+
+  const match = trimmed.match(/^(\d+(?:\.\d+)?)(ms|s|m|h|d|w|y)?$/i);
+  if (!match) {
+    throw new Error(`Invalid JWT duration: "${value}"`);
+  }
+
+  const amount = parseFloat(match[1]);
+  const unit = (match[2] ?? 's').toLowerCase();
+  const multiplier = MS_PER_UNIT[unit];
+  if (!multiplier) {
+    throw new Error(`Invalid JWT duration unit in "${value}"`);
+  }
+
+  return amount * multiplier;
+}
+
+export function sessionExpiresAtFromNow(refreshExpiresIn: string): Date {
+  return new Date(Date.now() + jwtDurationToMs(refreshExpiresIn));
+}