93 lines
2.8 KiB
TypeScript
93 lines
2.8 KiB
TypeScript
/**
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* LocalMessage 模型（存储层副本）
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*
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* 与 `src/data/models/chat/chat_message.ts` 的 `ChatMessage` 解耦：
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* 存储层维护自己的数据形态（独立 id/role/content/createdAt + 内部 sessionId 分组），
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* 不耦合 wire 模型，方便后续 schema 独立演进。
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*
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* 对齐项目内其他 Zod 模型的范式：
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* - `*Schema` 是验证与默认值的单一来源
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* - `*Input` 是构造输入（字段可缺），`*Data` 是解析后形态
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* - 不可变（private constructor + Object.freeze）
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* - 桥接方法 `toRow` / `fromRow` 处理 Dexie 行 ↔ 类实例的转换
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*/
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import { z } from "zod";
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import { ChatImageSchema, ChatLockDetailSchema } from "@/data/schemas/chat";
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import type { LocalMessageRow } from "./local_chat_db";
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export const LocalMessageSchema = z.object({
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id: z.string(),
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role: z.string(),
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type: z.string().default("text"),
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content: z.string(),
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createdAt: z.string().default(""),
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audioUrl: z.string().nullable().default(null),
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image: ChatImageSchema,
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lockDetail: ChatLockDetailSchema,
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sessionId: z.string().default(""),
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});
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export type LocalMessageInput = z.input<typeof LocalMessageSchema>;
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export type LocalMessageData = z.output<typeof LocalMessageSchema>;
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export class LocalMessage {
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declare readonly id: string;
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declare readonly role: string;
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declare readonly type: string;
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declare readonly content: string;
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declare readonly createdAt: string;
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declare readonly audioUrl: string | null;
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declare readonly image: z.output<typeof ChatImageSchema>;
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declare readonly lockDetail: z.output<typeof ChatLockDetailSchema>;
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declare readonly sessionId: string;
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private constructor(input: LocalMessageInput) {
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const data = LocalMessageSchema.parse(input);
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Object.assign(this, data);
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Object.freeze(this);
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}
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static from(input: LocalMessageInput): LocalMessage {
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return new LocalMessage(input);
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}
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static fromJson(json: unknown): LocalMessage {
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return LocalMessage.from(json as LocalMessageInput);
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}
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toJson(): LocalMessageData {
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return LocalMessageSchema.parse(this);
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}
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/** 转成 Dexie 行（不含 dbId，让 Dexie 自增）。 */
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toRow(): Omit<LocalMessageRow, "dbId"> {
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return {
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id: this.id,
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role: this.role,
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type: this.type,
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content: this.content,
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createdAt: this.createdAt,
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audioUrl: this.audioUrl,
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image: this.image,
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lockDetail: this.lockDetail,
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sessionId: this.sessionId,
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};
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}
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/** 从 Dexie 行还原（忽略 dbId 内部主键）。 */
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static fromRow(row: LocalMessageRow): LocalMessage {
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return LocalMessage.from({
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id: row.id,
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role: row.role,
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type: row.type,
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content: row.content,
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createdAt: row.createdAt,
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audioUrl: row.audioUrl ?? null,
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image: row.image,
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lockDetail: row.lockDetail,
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sessionId: row.sessionId,
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});
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}
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}
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