using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMIS.ViewModel.SupervisionManage;
using System.Linq.Expressions;
using EMIS.Entities;
using EMIS.DataLogic.Repositories;
using EMIS.ViewModel;

namespace EMIS.DataLogic.SupervisionManage
{
    public class SupDocumentDAL
    {
        public SupDocumentRepository supDocumentRepository { get; set; }
        public UserRepository userRepository { get; set; }
        public DocumentAttachmentRepository documentAttachmentRepository { get; set; }

        public IQueryable<SupDocumentView> GetSupDocumentView(Expression<Func<SUP_SupDocument, bool>> exp)
        {
            var query = from sdr in supDocumentRepository.GetList(exp)
                        join user in userRepository.Entities
                        on sdr.CreateUserID equals user.UserID
                        join dar in documentAttachmentRepository.Entities
                        on sdr.DocumentID equals dar.DocumentID
                        select new SupDocumentView
                        {
                            DocumentID = sdr.DocumentID,
                            Url = dar.Url,
                            DocumentTypeID = sdr.DocumentType,
                            Title = sdr.Title,
                            CreateCollegeID = user.CF_Staff.CollegeID,
                            CreateCollegeName = user.CF_Staff.CF_College.Name,
                            CreateUserID = sdr.CreateUserID,
                            CreateUserName = user.Name,
                            CreateTime = sdr.CreateTime
                        };
            return query;
        }

        public IQueryable<FileUploadView> GetDocumentAttachmentQueryable(Expression<Func<SUP_SupDocument, bool>> exp)
        {
            var tableName = typeof(SUP_DocumentAttachment).Name;
            var sql = (from record in supDocumentRepository.GetList(exp)
                       from attachment in documentAttachmentRepository.Entities.Where(x => x.DocumentID == record.DocumentID)
                       select new FileUploadView
                       {
                           FileID = attachment.DocumeAttachmentID,
                           TableName = tableName,
                           FormID = attachment.DocumentID,
                           FileName = attachment.Name,
                           FileUrl = attachment.Url
                       });

            return sql;
        }
    }
}