using Binance.TradeRobot.Business.Extensions;
using Binance.TradeRobot.Common.DI;
using Binance.TradeRobot.Common.Extensions;
using Binance.TradeRobot.Model.Base;
using Binance.TradeRobot.Model.Db;
using Binance.TradeRobot.Model.Dto;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.DependencyInjection;
using System.Data.Common;
using Yitter.IdGenerator;

namespace Binance.TradeRobot.Business
{
    [BatchRegistration(ServiceLifetime.Singleton, RegistrationType.Self)]
    public class RobotBusiness : BaseBusiness
    {
        public RobotBusiness(IFreeSql fsql, NLogManager logManager, IIdGenerator idGenerator, IMemoryCache memoryCache) : base(fsql, logManager, idGenerator, memoryCache)
        {

        }

        /// <summary>
        /// 检查机器人注册条件
        /// </summary>
        /// <param name="addRobotRequest"></param>
        /// <param name="exchangeAPIKey"></param>
        /// <exception cref="BusinessException"></exception>
        private void CheckRobotRegister(AddRobotRequest addRobotRequest, out ExchangeAPIKey exchangeAPIKey)
        {
            exchangeAPIKey = null;
            if (string.IsNullOrEmpty(addRobotRequest.Symbol) || addRobotRequest.ExchangeAPIKeyId == 0)
                throw new BusinessException("参数不全");
            exchangeAPIKey = fsql.Select<ExchangeAPIKey>(addRobotRequest.ExchangeAPIKeyId).ToOne();
            if (exchangeAPIKey == null)
                throw new BusinessException("选择的APIKey不存在");
            if (exchangeAPIKey.RobotId != null)
                throw new BusinessException("APIKey已被其他机器人使用");

            var accountId = exchangeAPIKey.AccountId;
            if (fsql.Select<ExchangeAccount, ExchangeAPIKey, Robot>().InnerJoin((ea, ek, r) => ea.Id == ek.AccountId)
                                                                     .LeftJoin((ea, ek, r) => ek.RobotId == r.Id)
                                                                     .Where((ea, ek, r) => ea.Id == accountId &&
                                                                                           r.Symbol == addRobotRequest.Symbol).Any())
                throw new BusinessException("同一个交易所账号下只允许存在一个交易对");
        }

        private Robot CreateRobot(AddRobotRequest addRobotRequest)
        {
            return new Robot()
            {
                Id = idGenerator.NewLong(),
                Symbol = addRobotRequest.Symbol,
                TradePolicy = addRobotRequest.TradePolicy,
                BusinessType = addRobotRequest.TradePolicy.GetBusinessType(),
                ExchangeId = addRobotRequest.ExchangeId,
            };
        }

        private RobotAccount CreateRobotAccount(long robotId)
        {
            return new RobotAccount() { Id = idGenerator.NewLong(), RobotId = robotId };
        }

        private void ExecuteAddRobotWithTran(Robot robot, RobotAccount robotAccount, long exchangeAPIKeyId, DbTransaction tran)
        {
            fsql.Insert(robot).WithTransaction(tran).ExecuteAffrows();
            fsql.Insert(robotAccount).WithTransaction(tran).ExecuteAffrows();
            fsql.Update<ExchangeAPIKey>(exchangeAPIKeyId).WithTransaction(tran).Set(ek => ek.RobotId, robot.Id).ExecuteAffrows();
        }

        /// <summary>
        /// 添加金字塔策略机器人
        /// </summary>
        /// <param name="addPyramidPolicyRobotRequest"></param>
        public void AddPyramidPolicyRobot(AddPyramidPolicyRobotRequest addPyramidPolicyRobotRequest)
        {
            CheckRobotRegister(addPyramidPolicyRobotRequest, out ExchangeAPIKey exchangeAPIKey);
            var robot = CreateRobot(addPyramidPolicyRobotRequest);
            var robotAccount = CreateRobotAccount(robot.Id);
            var pyramidPolicy = addPyramidPolicyRobotRequest.Map<PyramidPolicy>();
            pyramidPolicy.Id = idGenerator.NewLong();
            pyramidPolicy.RobotId = robot.Id;
            fsql.Transaction(() =>
            {
                var tran = fsql.Ado.TransactionCurrentThread;
                ExecuteAddRobotWithTran(robot, robotAccount, addPyramidPolicyRobotRequest.ExchangeAPIKeyId, tran);
                fsql.Insert(pyramidPolicy).ExecuteAffrows();
            });

            //调整仓位杠杆倍数

        }
    }
}