import type { ApiResponse } from "../client/types";
import proto from "db://assets/Scripts/proto/proto.pb.js";
import type { IChatService } from "./IChatService";
import { DataManager, DataId } from "../../data/DataManager";
import { GirlData } from "../../data/GirlData";

export class MockChatService implements IChatService {
  private delay(ms = 160) { return new Promise<void>(r => setTimeout(r, ms)); }

  private ok<T>(data: T): ApiResponse<T> {
    return ({ code: proto.cs.EnmRetCode.SUCCESS, data } as unknown) as ApiResponse<T>;
  }

  // 上报聊天数据
  async reqChatMsg(req: proto.cs.ICSChatMsgReq): Promise<ApiResponse<proto.cs.ICSChatMsgRes>> {
    // 延时
    await this.delay();
    // 请求数据
    const reqGirlId = req.girlId;
    // 数据层的数据
    const girlData = DataManager.I.getDataById<GirlData>(DataId.Girl);
    const reqGirlCategory = girlData.getGrilCategoryById(reqGirlId);
    const chatTotalCount = girlData.getChatTotalCount(reqGirlCategory.toString(), reqGirlId);
    const chatRemainCount = girlData.getChatRemainCount(reqGirlCategory.toString(), reqGirlId);
    // 计算
    let resultTotalCount = chatTotalCount + 1;
    let resultRemainCount = chatRemainCount;
    if (chatRemainCount > 0) {
      resultRemainCount = chatRemainCount - 1;
    }
    // 返回数据
    const res: proto.cs.ICSChatMsgRes = {
      chatRemainCount: resultRemainCount,
      chatTotalCount: resultTotalCount,
    };
    return this.ok(res);
  }

  // 获取聊天数据
  async reqGetChatMsg(req: proto.cs.ICSGetChatMsgReq): Promise<ApiResponse<proto.cs.ICSGetChatMsgRes>> {
    // 延时
    await this.delay();
    // 请求数据
    const reqGirlId = req.GirlId;
    const page = req.page;
    const limit = req.limit;    
    // 数据层的数据
    const girlData = DataManager.I.getDataById<GirlData>(DataId.Girl);
    const reqGirlCategory = girlData.getGrilCategoryById(reqGirlId);
    const chatTotalCount = girlData.getChatTotalCount(reqGirlCategory.toString(), reqGirlId);
    const chatRemainCount = girlData.getChatRemainCount(reqGirlCategory.toString(), reqGirlId);
    // 模拟一个完整的聊天记录池
    const allMsgs: proto.cs.IChatMsg[] = [];
    for (let i = 0; i < 50; i++) {
      allMsgs.push({
        msg: `模拟消息 ${i + 1} 来自技师 ${reqGirlId}`,
        isAi: i % 2 === 0,  // 偶数条当成 AI 说的
      });
    } 
    // 分页计算
    const start = (page - 1) * limit;
    const end = start + limit;
    const pageMsgs = allMsgs.slice(start, end);       
    // 返回数据
    const res: proto.cs.ICSGetChatMsgRes = {
      msgs: pageMsgs,
      chatRemainCount,
      chatTotalCount,
    };
    return this.ok(res);
  }  

  // 获取技师聊天次数
  async reqChatCountData(req: proto.cs.ICSGetChatRemainCountReq): Promise<ApiResponse<proto.cs.ICSGetChatRemainCountRes>> {
    // 延时
    await this.delay();
    // 请求数据
    const reqGirlId = req.id;
    // 数据层的数据
    const girlData = DataManager.I.getDataById<GirlData>(DataId.Girl);
    const reqGirlCategory = girlData.getGrilCategoryById(reqGirlId);
    const chatTotalCount = girlData.getChatTotalCount(reqGirlCategory.toString(), reqGirlId);
    const chatRemainCount = girlData.getChatRemainCount(reqGirlCategory.toString(), reqGirlId);
    // 返回数据
    const res: proto.cs.ICSGetChatRemainCountRes = {
      chatRemainCount,
      chatTotalCount,
    };
    return this.ok(res);
  }  
}