export type ChatReplyPhase =
  | "idle"
  | "generating"
  | "recovering"
  | "completed"
  | "stopped"
  | "failed";

export type ChatReplyAnnouncer =
  | "none"
  | "reply_status_region"
  | "chat_notice_toast"
  | "conversation_alert";

const announcers = {
  idle: "none",
  generating: "reply_status_region",
  recovering: "chat_notice_toast",
  completed: "reply_status_region",
  stopped: "chat_notice_toast",
  failed: "conversation_alert",
} as const satisfies Record<ChatReplyPhase, ChatReplyAnnouncer>;

export function chatReplyAnnouncer(phase: ChatReplyPhase): ChatReplyAnnouncer {
  return announcers[phase];
}

export function chatReplyAnnouncement(phase: ChatReplyPhase, replyOrdinal: number): string {
  if (chatReplyAnnouncer(phase) !== "reply_status_region") return "";
  if (phase === "generating") return "Jyotisha 正在回答，完成后会提示你阅读。";
  return `Jyotisha 已回答完毕，第 ${replyOrdinal} 条回答已显示在对话区末尾，可以开始阅读。`;
}