/**
 * 待同步的单条消息
 * 原始 Dart: SyncMessage (lib/data/models/chat/chat_sync.dart)
 */
import { z } from "zod";

export const SyncMessageSchema = z.object({
  role: z.string(),
  content: z.string(),
  timestamp: z.string(),
});

export type SyncMessageInput = z.input<typeof SyncMessageSchema>;
export type SyncMessageData = z.output<typeof SyncMessageSchema>;

export class SyncMessage {
  declare readonly role: string;
  declare readonly content: string;
  declare readonly timestamp: string;

  private constructor(input: SyncMessageInput) {
    const data = SyncMessageSchema.parse(input);
    Object.assign(this, data);
    Object.freeze(this);
  }

  static from(input: SyncMessageInput): SyncMessage {
    return new SyncMessage(input);
  }

  static fromJson(json: unknown): SyncMessage {
    return SyncMessage.from(json as SyncMessageInput);
  }

  toJson(): SyncMessageData {
    return SyncMessageSchema.parse(this);
  }
}