using System.Text;
using DS.Module.Core;
using DS.Module.Core.Enums;
using DS.Module.Core.Extensions;
using DS.WMS.Core.Application.Dtos;
using DS.WMS.Core.Fee.Dtos;
using DS.WMS.Core.Fee.Entity;
using DS.WMS.Core.Invoice.Interface;
using DS.WMS.Core.Op.Entity;
using DS.WMS.Core.Sys.Entity;
using SqlSugar;

namespace DS.WMS.Core.Invoice.Method
{
    /// <summary>
    /// 自由开票实现
    /// </summary>
    public class FreeInvoiceService : InvoiceService<Entity.Invoice>, IFreeInvoiceService
    {
        /// <summary>
        /// 允许的费用状态值
        /// </summary>
        internal readonly FeeStatus[] AllowedStatus = [FeeStatus.AuditPassed, FeeStatus.PartialSettlement, FeeStatus.SettlementCompleted];

        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="provider"></param>
        public FreeInvoiceService(IServiceProvider provider) : base(provider)
        {
        }

        /// <summary>
        /// 获取待开票的业务列表
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task<DataResult<List<BizInvoiceApplication>>> GetBizListAsync(PageRequest<FeeRange?> request)
        {
            var expr = Expressionable.Create<SeaExport, FeeRecord>().And((s, f) => AllowedStatus.Contains(f.FeeStatus) &&
                (f.Amount - f.InvoiceAmount - f.OrderInvoiceAmount + f.OrderInvSettlementAmount) != 0);
            if (request.OtherQueryCondition.HasValue)
            {
                switch (request.OtherQueryCondition.Value)
                {
                    case FeeRange.Unsettled:
                        expr = expr.And((s, f) => f.SettlementAmount == 0);
                        break;

                    case FeeRange.Settled:
                        expr = expr.And((s, f) => f.SettlementAmount > 0);
                        break;
                }
            }
            var query = CreateFeeQuery(expr.ToExpression());

            if (!request.QueryCondition.IsNullOrEmpty())
            {
                var whereList = request.GetConditionalModels(Db);
                query = query.Where(whereList);
            }

            var result = await query.GroupBy(x => x.BusinessId).Select(x => new BizInvoiceApplication
            {
                Id = x.BusinessId,
                BusinessType = x.BusinessType,
                AccountDate = x.AccountDate,
                CntrTotal = x.CntrTotal,
                CreateBy = x.CreateBy,
                CustomerNo = x.CustomerNo,
                ClientName = x.ClientName,
                DischargePort = x.DischargePort,
                ETD = x.ETD,
                HBLNO = x.HBLNO,
                LoadPort = x.LoadPort,
                MBLNO = x.MBLNO,
                OperatorId = x.OperatorId,
                SaleDeptId = x.SaleDeptId,
                SaleId = x.SaleId,
                SaleName = x.Sale,
                Vessel = x.Vessel,
                Voyage = x.Voyage,
                BookingNO = x.BookingNo,
                //未开票金额=金额-已开票金额-申请开票金额+申请开票金额已开票
                UnBilledRMB = SqlFunc.Subqueryable<FeeRecord>().Where(f => f.BusinessId == x.BusinessId && f.FeeStatus == FeeStatus.AuditPassed
                    && f.Currency == FeeCurrency.RMB_CODE).Select(f => SqlFunc.AggregateSum(f.Amount - f.InvoiceAmount - f.OrderInvoiceAmount + f.OrderInvSettlementAmount)),
                UnBilledUSD = SqlFunc.Subqueryable<FeeRecord>().Where(f => f.BusinessId == x.BusinessId && f.FeeStatus == FeeStatus.AuditPassed
                    && f.Currency == FeeCurrency.USD_CODE).Select(f => SqlFunc.AggregateSum(f.Amount - f.InvoiceAmount - f.OrderInvoiceAmount + f.OrderInvSettlementAmount)),
                UnBilledOther = SqlFunc.Subqueryable<FeeRecord>().Where(f => f.BusinessId == x.BusinessId && f.FeeStatus == FeeStatus.AuditPassed
                    && f.Currency != FeeCurrency.RMB_CODE && f.Currency != FeeCurrency.USD_CODE).Select(f => SqlFunc.AggregateSum(f.Amount - f.InvoiceAmount - f.OrderInvoiceAmount + f.OrderInvSettlementAmount)),
            }).ToQueryPageAsync(request.PageCondition);

            if (result.Data.Count > 0)
            {
                //关联用户名称
                var userIds = result.Data.Where(x => x.OperatorId.HasValue).Select(x => x.OperatorId.Value)
                    .Union(result.Data.Select(x => x.CreateBy))
                    .Distinct();
                var users = await Db.Queryable<SysUser>().Where(x => userIds.Contains(x.Id)).Select(x => new { x.Id, x.UserName }).ToListAsync();
                //关联机构名称
                var orgIds = result.Data.Select(x => x.SaleDeptId).Distinct();
                var orgs = await Db.Queryable<SysOrg>().Where(x => userIds.Contains(x.Id)).Select(x => new { x.Id, x.OrgName }).ToListAsync();

                foreach (var item in result.Data)
                {
                    item.CreateByName = users.Find(x => x.Id == item.CreateBy)?.UserName;

                    if (item.OperatorId.HasValue)
                        item.Operator = users.Find(x => x.Id == item.OperatorId.Value)?.UserName;

                    item.SaleDeptName = orgs.Find(x => x.Id == item.SaleDeptId)?.OrgName;
                }
            }

            return result;
        }

        /// <summary>
        /// 根据业务编号及类型获取费用记录
        /// </summary>
        /// <param name="items">业务ID与业务类型</param>
        /// <returns></returns>
        public async Task<DataResult<InvoiceApplicaitonBiz>> GetFeesAsync(params FeeClient[] items)
        {
            var bizIds = items.Select(x => x.Id).Distinct();
            var types = items.Select(x => x.BusinessType).Distinct();
            var cIds = items.Select(x => x.CustomerId).Distinct();

            var list = await TenantDb.Queryable<FeeRecord>()
                .Where(f => bizIds.Contains(f.BusinessId) && types.Contains(f.BusinessType) && cIds.Contains(f.CustomerId) && 
                    AllowedStatus.Contains(f.FeeStatus))
                .Select(f => new FeeInvoiceDto
                {
                    RecordId = f.Id,
                    BusinessId = f.BusinessId,
                    BusinessType = f.BusinessType,
                    CustomerName = f.CustomerName,
                    FeeId = f.FeeId,
                    FeeName = f.FeeName,
                    FeeType = f.FeeType,
                    Amount = f.Amount,
                    Currency = f.Currency,
                    RestAmount = f.Amount - f.InvoiceAmount - f.OrderInvoiceAmount + f.OrderInvSettlementAmount,
                    ExchangeRate = f.ExchangeRate,
                    Remark = f.Remark,
                }).ToListAsync();

            //移除开票剩余金额为0的项
            list.RemoveAll(f => f.RestAmount == 0);

            foreach (var item in list)
                item.ApplyAmount = item.RestAmount;

            return DataResult<InvoiceApplicaitonBiz>.Success(new InvoiceApplicaitonBiz(list));
        }


        protected override async Task<DataResult> PreSaveAsync(Entity.Invoice invoice)
        {
            invoice.Mode = InvoiceMode.Free;

            //获取剩余待开票金额
            var ids = invoice.Details.Select(x => x.RecordId);
            var fees = await TenantDb.Queryable<FeeRecord>().Where(x => ids.Contains(x.Id) && AllowedStatus.Contains(x.FeeStatus))
                .Select(x => new
                {
                    x.Id,
                    OriginalRestAmount = x.Amount - x.InvoiceAmount - x.OrderInvoiceAmount + x.OrderInvSettlementAmount
                }).ToListAsync();

            StringBuilder sb = new();
            foreach (var detail in invoice.Details)
            {
                var item = fees.Find(x => x.Id == detail.RecordId);
                if (item == null)
                {
                    sb.Append(MultiLanguageConst.GetDescription(nameof(MultiLanguageConst.EmptyData)));
                    break;
                }

                if (detail.OriginalAmount > 0 && detail.OriginalAmount > item.OriginalRestAmount)
                {
                    sb.AppendFormat(MultiLanguageConst.GetDescription(nameof(MultiLanguageConst.DetailExceedingLimit)), detail.FeeName);
                    sb.Append("；");
                    continue;
                }
                else if (detail.OriginalAmount < 0 && detail.OriginalAmount < item.OriginalRestAmount)
                {
                    sb.AppendFormat(MultiLanguageConst.GetDescription(nameof(MultiLanguageConst.DetailExceedingLimit)), detail.FeeName);
                    sb.Append("；");
                    continue;
                }
            }

            return sb.Length > 0 ? DataResult.Failed(sb.ToString()) : DataResult.Success;
        }
    }
}