Function decideEmails

src/node/updater/Notifier.ts:43–64

(input: NotifierInput)

 * Cadence: severe repeats every 30 days.
 */
export const decideEmails = (input: NotifierInput): NotifierResult => {
  const {adminEmail, current, latest, isSevere, state, now} = input;

  if (!adminEmail) return {toSend: [], newState: state};

  const toSend: PlannedEmail[] = [];
  const newState: EmailSendLog = {...state};

  if (isSevere) {
    const sinceSevere = sinceMs(state.severeAt, now);
    if (sinceSevere >= SEVERE_INTERVAL) {
      toSend.push({
        kind: 'severe',
        subject: `[Etherpad] Your instance is outdated (${current})`,
        body: `Your Etherpad version (${current}) is at least one minor release behind the latest published version (${latest}). Consider scheduling an upgrade.`,
      });
      newState.severeAt = now.toISOString();
    }
  }

  return {toSend, newState};
};

export type FailureOutcome =
  | 'preflight-failed'