refactor(data): merge DTO models into schemas

src/data/schemas/chat/response/unlock_private_response.ts

@@ -6,7 +6,7 @@ import {
   stringOrEmpty,
   stringOrNull,
 } from "../../nullable-defaults";
-import { ChatImageSchema } from "../chat_payloads";
+import { ChatImageSchema, type ChatImageData } from "../chat_payloads";
 import { ChatLockTypeSchema } from "../chat_lock_type";
 
 /**
@@ -36,3 +36,37 @@ export type UnlockPrivateResponseInput = z.input<
 export type UnlockPrivateResponseData = z.output<
   typeof UnlockPrivateResponseSchema
 >;
+
+/**
+ * 单条历史付费 / 私密消息解锁响应数据类。
+ */
+export class UnlockPrivateResponse {
+  declare readonly unlocked: boolean;
+  declare readonly messageId: string;
+  declare readonly content: string;
+  declare readonly audioUrl: string;
+  declare readonly image: ChatImageData;
+  declare readonly reason: UnlockPrivateReason;
+  declare readonly creditBalance: number;
+  declare readonly creditsCharged: number;
+  declare readonly requiredCredits: number;
+  declare readonly shortfallCredits: number;
+
+  private constructor(input: UnlockPrivateResponseInput) {
+    const data = UnlockPrivateResponseSchema.parse(input);
+    Object.assign(this, data);
+    Object.freeze(this);
+  }
+
+  static from(input: UnlockPrivateResponseInput): UnlockPrivateResponse {
+    return new UnlockPrivateResponse(input);
+  }
+
+  static fromJson(json: unknown): UnlockPrivateResponse {
+    return UnlockPrivateResponse.from(json as UnlockPrivateResponseInput);
+  }
+
+  toJson(): UnlockPrivateResponseData {
+    return UnlockPrivateResponseSchema.parse(this);
+  }
+}