// assets/Scripts/services/logic/ChatService.ts
import type { ApiResponse } from "../client/types";
import proto from "db://assets/Scripts/proto/proto.pb.js";
import type { IChatService } from "./IChatService";
import { HttpChatService } from "./HttpChatService";
import { MockChatService } from "./MockChatService";

// 模拟开关
const USE_MOCK = true;

export class ChatService implements IChatService {
  private static _I: ChatService | null = null;
  public static get I(): ChatService {
    if (!ChatService._I) ChatService._I = new ChatService();
    return ChatService._I;
  }

  private impl: IChatService;

  private constructor() {
    this.impl = USE_MOCK ? new MockChatService() : new HttpChatService();
  }

  /** 运行期动态切换 */
  public switch(useMock: boolean) {
    this.impl = useMock ? new MockChatService() : new HttpChatService();
  }

  // 对外 API 保持不变
  public async reqBuyChat(req: proto.cs.ICSBuyChatReq): Promise<ApiResponse<proto.cs.ICSBuyChatRes>> {
    return this.impl.reqBuyChat(req);
  }
}