using FlexJobApi.Core;
using Furion.DatabaseAccessor;
using Furion.FriendlyException;
using MediatR;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FlexJobApi.UserServer.Application
{
    /// <summary>
    /// 企业费用命令处理器
    /// </summary>
    public class EnterpriseCostCommandHandler(
            IRepository<EnterpriseCost> repEnterpriseCost,
            IRepository<Enterprise> repEnterprise,
            IRepository<EnterpriseEmployeeContract> repEnterpriseEmployeeContract,
            IRepository<ElectronSignSetting> repElectronSignSetting,
            IRepository<ContractTemplate> repContractTemplate
        ) :
        IRequestHandler<SaveEnterpriseCostCommand, Guid>
    {
        private readonly IRepository<EnterpriseCost> repEnterpriseCost = repEnterpriseCost;
        private readonly IRepository<Enterprise> repEnterprise = repEnterprise;
        private readonly IRepository<EnterpriseEmployeeContract> repEnterpriseEmployeeContract = repEnterpriseEmployeeContract;
        private readonly IRepository<ElectronSignSetting> repElectronSignSetting = repElectronSignSetting;
        private readonly IRepository<ContractTemplate> repContractTemplate = repContractTemplate;

        /// <summary>
        /// 保存企业费用
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task<Guid> Handle(SaveEnterpriseCostCommand request, CancellationToken cancellationToken)
        {
            var cost = await repEnterpriseCost.AsQueryable()
                .Where(it =>
                    it.EnterpriseId == request.EnterpriseId
                    && it.Type == request.Type
                    && it.EnterpriseEmployeeContractId == request.EnterpriseEmployeeContractId)
                .FirstOrDefaultAsync();
            var add = false;
            if (cost == null)
            {
                cost = new EnterpriseCost
                {
                    EnterpriseId = request.EnterpriseId,
                    Type = request.Type,
                    EnterpriseEmployeeContractId = request.EnterpriseEmployeeContractId,
                };
                add = true;
            }
            else
            {
                cost.Status = request.Status;
            }
            if (cost.Amount == null)
            {
                if (request.Type == EnumEnterpriseCostType.ElectronSign && request.EnterpriseEmployeeContractId.HasValue)
                {
                    SaveEnterpriseCostCommandElectronSignSetting? setting = null;
                    if (request.ContractTemplateId.HasValue)
                    {
                        setting = await (from ess in repElectronSignSetting.AsQueryable().AsNoTracking()
                                         join ct in repContractTemplate.AsQueryable().AsNoTracking() on ess.Access equals ct.Access
                                         where ct.Id == request.ContractTemplateId
                                         select new SaveEnterpriseCostCommandElectronSignSetting
                                         {
                                             MergeSignCost = ess.MergeSignCost,
                                             SignCost = ess.SignCost,
                                         }).FirstOrDefaultAsync();
                    }
                    else
                    {
                        setting = await (from ess in repElectronSignSetting.AsQueryable().AsNoTracking()
                                         join ct in repContractTemplate.AsQueryable().AsNoTracking() on ess.Access equals ct.Access
                                         join eec in repEnterpriseEmployeeContract.AsQueryable().AsNoTracking() on ct.Id equals eec.ContractTemplateId
                                         where eec.Id == request.EnterpriseEmployeeContractId
                                         select new SaveEnterpriseCostCommandElectronSignSetting
                                         {
                                             MergeSignCost = ess.MergeSignCost,
                                             SignCost = ess.SignCost,
                                         }).FirstOrDefaultAsync();
                    }
                    if (setting == null) throw Oops.Oh(EnumErrorCodeType.s404, "电子签配置");
                    cost.Amount = setting.MergeSignCost ?? setting.SignCost;
                }
                if (request.Type == EnumEnterpriseCostType.SMS)
                {
                    cost.Amount = await repEnterprise.AsQueryable().AsNoTracking()
                        .Where(it => it.Id == request.EnterpriseId)
                        .Select(it => it.SmsCost)
                        .FirstOrDefaultAsync();
                }
            }
            if (add)
            {
                await repEnterpriseCost.UpdateAsync(cost);
            }
            else
            {
                await repEnterpriseCost.InsertAsync(cost);
            }
            return cost.Id;
        }
    }
}