using System.Text.Json;
using Volo.Abp.Domain.Services;
using Volo.Abp.Users;
using Yi.Framework.AiHub.Domain.Entities;
using Yi.Framework.AiHub.Domain.Entities.Pay;
using Yi.Framework.AiHub.Domain.Shared.Enums;
using Yi.Framework.SqlSugarCore.Abstractions;
using Yi.Framework.AiHub.Domain.Extensions;

namespace Yi.Framework.AiHub.Domain.Managers;

/// <summary>
/// 支付管理器
/// </summary>
public class PayManager : DomainService
{
    private readonly ISqlSugarRepository<PayNoticeRecordAggregateRoot, Guid> _payNoticeRepository;
    private readonly ICurrentUser _currentUser;
    private readonly ISqlSugarRepository<PayOrderAggregateRoot, Guid> _payOrderRepository;
    private readonly ISqlSugarRepository<AiRechargeAggregateRoot, Guid> _rechargeRepository;

    public PayManager(
        ISqlSugarRepository<PayNoticeRecordAggregateRoot, Guid> payNoticeRepository,
        ICurrentUser currentUser,
        ISqlSugarRepository<PayOrderAggregateRoot, Guid> payOrderRepository,
        ISqlSugarRepository<AiRechargeAggregateRoot, Guid> rechargeRepository)
    {
        _payNoticeRepository = payNoticeRepository;
        _currentUser = currentUser;
        _payOrderRepository = payOrderRepository;
        _rechargeRepository = rechargeRepository;
    }

    /// <summary>
    /// 创建订单
    /// </summary>
    /// <param name="goodsType">商品类型</param>
    /// <returns>订单信息</returns>
    public async Task<PayOrderAggregateRoot> CreateOrderAsync(GoodsTypeEnum goodsType)
    {
        // 验证用户是否登录
        if (!_currentUser.IsAuthenticated)
        {
            throw new UserFriendlyException("用户未登录");
        }

        var userId = _currentUser.GetId();

        // 如果是尊享包商品，需要验证用户是否为VIP
        if (goodsType.IsPremiumPackage())
        {
            if (!_currentUser.IsAiVip())
            {
                throw new UserFriendlyException("购买尊享包需要VIP资格，请先开通VIP");
            }
        }

        // 生成订单号
        var outTradeNo = GenerateOutTradeNo();

        // 获取商品信息
        var goodsName = goodsType.GetDisplayName();

        // 计算订单金额（尊享包使用折扣价格，VIP服务使用原价）
        decimal totalAmount;
        if (goodsType.IsPremiumPackage())
        {
            // 获取用户累加充值金额
            var totalRechargeAmount = await GetUserTotalRechargeAmountAsync(userId);
            // 使用折扣后的价格
            totalAmount = goodsType.GetDiscountedPrice(totalRechargeAmount);
        }
        else
        {
            // VIP服务使用原价
            totalAmount = goodsType.GetTotalAmount();
        }

        // 创建订单实体
        var payOrder = new PayOrderAggregateRoot
        {
            OutTradeNo = outTradeNo,
            UserId = userId,
            UserName = _currentUser.UserName ?? string.Empty,
            TotalAmount = totalAmount,
            GoodsName = goodsName,
            GoodsType = goodsType
        };

        // 保存订单
        await _payOrderRepository.InsertAsync(payOrder);

        return payOrder;
    }

    /// <summary>
    /// 更新订单状态
    /// </summary>
    /// <param name="outTradeNo">商户订单号</param>
    /// <param name="tradeStatus">交易状态</param>
    /// <param name="tradeNo">支付宝交易号</param>
    /// <returns></returns>
    public async Task<PayOrderAggregateRoot> UpdateOrderStatusAsync(string outTradeNo, TradeStatusEnum tradeStatus, string? tradeNo = null)
    {
        var order = await _payOrderRepository.GetFirstAsync(x => x.OutTradeNo == outTradeNo);
        if (order == null)
        {
            throw new UserFriendlyException($"订单不存在：{outTradeNo}");
        }

        order.TradeStatus = tradeStatus;
        if (!string.IsNullOrEmpty(tradeNo))
        {
            order.TradeNo = tradeNo;
        }

        await _payOrderRepository.UpdateAsync(order);
        return order;
    }


    /// <summary>
    /// 记录支付通知
    /// </summary>
    /// <param name="notifyData">通知数据</param>
    /// <param name="signStr"></param>
    /// <returns></returns>
    public async Task RecordPayNoticeAsync(Dictionary<string, string> notifyData, string signStr)
    {
        var payNotice = new PayNoticeRecordAggregateRoot
        {
            NotifyTime = DateTime.Parse(notifyData.GetValueOrDefault("notify_time", string.Empty)),
            TradeNo = notifyData.GetValueOrDefault("trade_no", string.Empty),
            OutTradeNo = notifyData.GetValueOrDefault("out_trade_no", string.Empty),
            BuyerId = notifyData.GetValueOrDefault("buyer_id", string.Empty),
            TradeStatus = ParseTradeStatus(notifyData.GetValueOrDefault("trade_status", string.Empty)),
            TotalAmount = decimal.TryParse(notifyData.GetValueOrDefault("total_amount", "-1"), out var amount)
                ? amount
                : 0,
            NotifyData = JsonSerializer.Serialize(notifyData),
            SignStr = signStr
        };

        await _payNoticeRepository.InsertAsync(payNotice);
    }

    /// <summary>
    /// 生成商户订单号
    /// </summary>
    /// <returns></returns>
    private string GenerateOutTradeNo()
    {
        return $"YI_{DateTime.Now:yyyyMMddHHmmss}_{Random.Shared.Next(1000, 9999)}";
    }

    /// <summary>
    /// 解析交易状态
    /// </summary>
    /// <param name="tradeStatus">状态字符串</param>
    /// <returns></returns>
    private TradeStatusEnum ParseTradeStatus(string tradeStatus)
    {
        if (Enum.TryParse<TradeStatusEnum>(tradeStatus, out var result))
        {
            return result;
        }
        return TradeStatusEnum.WAIT_TRADE;
    }

    /// <summary>
    /// 获取用户累加充值金额
    /// </summary>
    /// <param name="userId">用户ID</param>
    /// <returns>累加充值金额</returns>
    public async Task<decimal> GetUserTotalRechargeAmountAsync(Guid userId)
    {
        var totalAmount = await _rechargeRepository
            ._DbQueryable
            .Where(x => x.UserId == userId )
            .SumAsync(x => x.RechargeAmount);

        return totalAmount;
    }
}