using SJZY.Track.Application.Dtos.ProvideServices;
using SJZY.Track.Domain.Aggregates.OrderAggregate;

namespace SJZY.Track.Application.Services.ProvideServices;

/// <summary>
/// 订单关联服务
/// </summary>
[ApiExplorerSettings(GroupName = "提供接口")]
public class OrderLinkService : ApplicationService
{
    private readonly IOrderRepository _orderRepository;
    private readonly IBasicQuery<OrderLinkEntity> _orderLinkQuery;

    public OrderLinkService(IBasicQuery<OrderLinkEntity> orderLinkQuery, IOrderRepository orderRepository)
    {
        _orderLinkQuery = orderLinkQuery;
        _orderRepository = orderRepository;
    }

    /// <summary>
    /// 关联订单
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpPost("Order/Link")]
    public async Task<bool> LinkOrderAsync(LinkOrderInput input)
    {
        if (!await _orderRepository.IsAnyAsync(x => x.OrderType == input.OrderType && x.OrderNo == input.OrderNo))
        {
            throw new BusinessException(message: $"单号：{input.OrderNo}不存在");
        }

        if (input.LinkOrderNos.Count < 1 || input.LinkOrderType == 0) return true;

        // 单号去重
        input.LinkOrderNos = input.LinkOrderNos.Distinct().ToList();

        // 解绑
        if (!input.IsLink) return await UnLinkOrderAsync(input);

        // 关联订单
        return await DoLinkOrderAsync(input);
    }

    private async Task<bool> DoLinkOrderAsync(LinkOrderInput input)
    {
        // 获取已关联的订单
        var linkOrderNos = await _orderLinkQuery.GetListAsync(x =>
                x.OrderType == input.OrderType && x.OrderNo == input.OrderNo && x.LinkOrderType == input.LinkOrderType,
            x => x.LinkOrderNo);

        // 计算出未关联的订单
        var noLinkOrderNos = input.LinkOrderNos.Except(linkOrderNos);

        // 过滤掉不存在的订单
        var canLinkOrderNos = await _orderRepository.GetListAsync(x =>
                x.OrderType == input.LinkOrderType && noLinkOrderNos.Contains(x.OrderNo),
            x => x.OrderNo);

        await _orderRepository.LinkOrderAsync(canLinkOrderNos.Select(x => new OrderLinkEntity
        {
            OrderNo = input.OrderNo,
            OrderType = input.OrderType,
            LinkOrderNo = x,
            LinkOrderType = input.LinkOrderType
        }).ToList());

        return true;
    }

    private async Task<bool> UnLinkOrderAsync(LinkOrderInput input)
    {
        var unLinkIds = await _orderLinkQuery.GetListAsync(x =>
                x.OrderType == input.OrderType && x.OrderNo == input.OrderNo &&
                x.LinkOrderType == input.LinkOrderType && input.LinkOrderNos.Contains(x.LinkOrderNo),
            x => x.Id);

        // real del
        await _orderRepository.UnLinkByIdsAsync(unLinkIds);

        return true;
    }
}