using EntityFrameworkCore.Triggered;
using IRaCIS.Core.Domain.Share;

namespace IRaCIS.Core.Application.Triggers
{
    /// <summary>
    ///  处理  访视  1、提交状态 2、执行状态   3、最早最晚 拍片日期
    /// </summary>
    public class SubjectVisitTrigger : IAfterSaveTrigger<NoneDicomStudy>, IAfterSaveTrigger<DicomStudy>, IAfterSaveTrigger<NoneDicomStudyFile>
    {
        private readonly IRepository<SubjectVisit> _subjectVisitRepository;
        private readonly IRepository _repository;

        public SubjectVisitTrigger(IRepository<SubjectVisit> subjectVisitRepository,IRepository repository)
        {
            _subjectVisitRepository = subjectVisitRepository;

            _repository = repository;
        }

        //注意删除不能用扩展方法，必须用EF跟踪的实体  否则不能取到  SubjectVisitId
        public async Task AfterSave(ITriggerContext<NoneDicomStudy> context, CancellationToken cancellationToken)
        {
            var subjectVisitId = context.Entity.SubjectVisitId;
          
            if (context.ChangeType == ChangeType.Added || context.ChangeType == ChangeType.Modified)
            {
                await UpdateSubjectVisitImageDateAsync(context.Entity.SubjectVisitId);

                await _subjectVisitRepository.BatchUpdateNoTrackingAsync(t => t.Id == subjectVisitId, u => new SubjectVisit()
                {
                    VisitExecuted = VisitExecutedEnum.Executed
                });
            }


            if (context.ChangeType == ChangeType.Deleted)
            {
                await UpdateSubjectVisitImageDateAsync(context.Entity.SubjectVisitId);

                await UpdateSubjectVisitSubmitStateAsync(subjectVisitId);
            }
        }

        public async Task AfterSave(ITriggerContext<DicomStudy> context, CancellationToken cancellationToken)
        {
            var subjectVisitId = context.Entity.SubjectVisitId;
            if (context.ChangeType == ChangeType.Added )
            {
                await UpdateSubjectVisitImageDateAsync(subjectVisitId);

                var studyId = context.Entity.Id;
                //处理Modality
                var seriesModalityList = _repository.Where<DicomSeries>(t => t.StudyId == studyId).Select(u => u.Modality).Distinct();
                string ModaliyStr = string.Join('、', seriesModalityList.ToList());


                context.Entity.Modalities = ModaliyStr;

                await _subjectVisitRepository.BatchUpdateNoTrackingAsync(t => t.Id == subjectVisitId, u => new SubjectVisit()
                {
                    VisitExecuted = VisitExecutedEnum.Executed
                });
            }

            if (context.ChangeType == ChangeType.Deleted)
            {
                await UpdateSubjectVisitImageDateAsync(subjectVisitId);
                await UpdateSubjectVisitSubmitStateAsync(subjectVisitId);
            }

        }

        public async Task AfterSave(ITriggerContext<NoneDicomStudyFile> context, CancellationToken cancellationToken)
        {
            var subjectVisitId =await _subjectVisitRepository._dbContext.NoneDicomStudy.Where(x=>x.Id== context.Entity.NoneDicomStudyId).Select(x=>x.SubjectVisitId).FirstOrDefaultAsync();
          

            if (context.ChangeType == ChangeType.Deleted)
            {
               
                await UpdateSubjectVisitSubmitStateAsync(subjectVisitId);
            }

        }

        /// <summary>处理提交状态</summary>

        public async Task UpdateSubjectVisitSubmitStateAsync(Guid subjectVisitId)
        {
 
            //一个访视下面有多个检查，所以需要检测 没有的时候才清空  非dicom 是检查文件  不是表记录
            if (await _subjectVisitRepository.Where(t => t.Id == subjectVisitId).SelectMany(t => t.StudyList).CountAsync() == 0 &&
                await _subjectVisitRepository.Where(t => t.Id == subjectVisitId)
                    .SelectMany(t => t.NoneDicomStudyList).SelectMany(u => u.NoneDicomFileList).CountAsync() == 0)
            {

                await _subjectVisitRepository.UpdatePartialFromQueryAsync(t => t.Id == subjectVisitId && t.SubmitState == SubmitStateEnum.ToSubmit,
                    u => new SubjectVisit() { VisitExecuted = 0, SVENDTC = null, SVSTDTC = null, SubmitState = SubmitStateEnum.None },true);
            }
        }

        /// <summary>处理拍片日期</summary>
        private async Task UpdateSubjectVisitImageDateAsync(Guid subjectVisitId)
        {
            var svTime = _subjectVisitRepository.Where(t => t.Id == subjectVisitId).Select(t => new
            {
                DicomStudyMinStudyTime = t.StudyList.Min(t => (DateTime?)t.StudyTime),
                DicomStudyMaxStudyTime = t.StudyList.Max(t => (DateTime?)t.StudyTime),
                NoneDicomStudyMinStudyTime = t.NoneDicomStudyList.Min(t => (DateTime?)t.ImageDate),
                NoneDicomStudyMaxStudyTime = t.NoneDicomStudyList.Max(t => (DateTime?)t.ImageDate)
            }).FirstOrDefault().IfNullThrowException();


            var minArray = new DateTime?[] { svTime.DicomStudyMinStudyTime, svTime.NoneDicomStudyMinStudyTime };
            var maxArray = new DateTime?[] { svTime.DicomStudyMaxStudyTime, svTime.NoneDicomStudyMaxStudyTime };

            await _subjectVisitRepository.BatchUpdateNoTrackingAsync(t=>t.Id ==subjectVisitId, u => new SubjectVisit()
            {

                EarliestScanDate = minArray.Min(),

                LatestScanDate = maxArray.Max()
            });
        }
    }
}