import type { Bot, InboxItem } from "@rakazo/contracts";

/** One item per pending ask message, waiting takeover run, or unread bot thread. */
export function inboxItemKey(item: InboxItem): string {
  switch (item.kind) {
    case "ask":
    case "approval":
      return `ask:${item.messageId}`;
    case "takeover":
      return `takeover:${item.runId}`;
    case "unread":
      return `unread:${item.bot.id}`;
  }
}

/**
 * Changes when a bot's run status, unread flag or newest message changes, which is when the
 * inbox may have changed. The shell already keeps these fresh.
 */
export function inboxRefreshSignal(
  bots: readonly Pick<Bot, "id" | "status" | "unread" | "preview">[],
): string {
  return bots.map((bot) => `${bot.id}:${bot.status}:${bot.unread}:${bot.preview}`).join("\n");
}