import type { ApiResponse } from "../client/types";
import proto from "db://assets/Scripts/proto/proto.pb.js";
import type { IShopService } from "./IShopService";
import { PurchaseConfig } from "../../config/PurchaseConfig";
import { ConfigManager, ConfigId } from "../../manager/ConfigManager";

export class MockShopService implements IShopService {
  private delay(ms = 180) { return new Promise<void>(r => setTimeout(r, ms)); }
  private randInt(min: number, max: number) { return Math.floor(Math.random() * (max - min + 1)) + min; }
  private priceUSD(min = 0.99, max = 49.99) {
    const v = Math.random() * (max - min) + min;
    return v.toFixed(2); // 字符串，保留两位小数
  }

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

  private genGood(id: number, name: string, count: number, price: number): proto.cs.IPurchaseConfig {
    return {
      id,
      name,
      count,
      price, 
    };
  }

  // 获取商品列表
  async reqShopList(_req: proto.cs.ICSGetPurchaseReq): Promise<ApiResponse<proto.cs.ICSGetPurchaseRes>> {
    // 延时
    await this.delay();
    // 配置数据
    const configData = ConfigManager.I.getDataById<PurchaseConfig>(ConfigId.Purchase);
    const allId = configData.getAllId();
    let goodData: proto.cs.IPurchaseConfig[] = [];
    for (let id of allId) {
      let name = configData.getNameById(id);
      let count = configData.getCountById(id);
      let price = configData.getPriceById(id);
      let oneData = this.genGood(id, name, count, price);
      goodData.push(oneData);
    }
    // 返回数据
    const res: proto.cs.ICSGetPurchaseRes = { items: goodData };
    return this.ok(res);
  }

  // 使用余额购买商品
  async reqBuyGood(_req: proto.cs.ICSBuyGoodReq): Promise<ApiResponse<proto.cs.ICSBuyGoodRes>> {
    // 延时
    await this.delay();
    // 返回数据
    const res: proto.cs.ICSBuyGoodRes = {};
    return this.ok(res);
  }  
}