export type CommissionMessageEvent = {
  messageId: string; ticketId: string; ticketTitle: string; authorId: string;
  authorName: string; text: string | null;
};

export function parseCommissionMessageEvent(value: string): CommissionMessageEvent | null {
  if (!value.startsWith("message:")) return null;
  try {
    const message = JSON.parse(value.slice(8)) as CommissionMessageEvent;
    return typeof message.messageId === "string" && typeof message.ticketId === "string" &&
      typeof message.ticketTitle === "string" && typeof message.authorId === "string" &&
      typeof message.authorName === "string" &&
      (typeof message.text === "string" || message.text === null) ? message : null;
  } catch { return null; }
}