import { z } from "zod";

export const consultationReplyMetadataSchema = z.object({
  title: z.string().trim().min(1).max(64),
}).strict();

export type ConsultationReplyMetadata = z.infer<typeof consultationReplyMetadataSchema>;

function safeQuestionTitle(question: string) {
  const normalized = question
    .replace(/\s+/g, " ")
    .trim()
    .replace(/[？?！!。．，,；;：:]+$/u, "")
    .replace(/[\p{P}\p{S}]/gu, "")
    .trim();
  if (!normalized) return "一般占星咨询";
  const characters = Array.from(normalized);
  if (characters.length >= 6) return characters.slice(0, 14).join("");
  return `${characters.join("")}主题咨询`.slice(0, 14);
}

export function createConsultationReplyMetadata(input: { question: string }): ConsultationReplyMetadata {
  return consultationReplyMetadataSchema.parse({ title: safeQuestionTitle(input.question) });
}