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

namespace EMIS.DataLogic.DQPSystem
{
    public class CommunicateDAL
    {
        public SOCRepository SOCRepository { get; set; }
        public StaffRepository StaffRepository { get; set; }
        public StaffProfileRepository StaffProfileRepository { get; set; }
        public ClassmajorRepository ClassmajorRepository { get; set; }
        public UserRepository UserRepository { get; set; }
        public SOCStaffRepository SOCStaffRepository { get; set; }
        public StudentContactRepository StudentContactRepository { get; set; }

        public IQueryable<TeacherCommunicateView> GetTeacherCommunicateViewQueryable(Expression<Func<CF_Staff, bool>> staffExp,
            Expression<Func<DQP_SOC, bool>> socExp)
        {
            var sql = (from soc in SOCRepository.GetList(socExp)
                       from teacher in SOCStaffRepository.Entities.Where(x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE && x.SOCID == soc.SOCID)
                       from staff in StaffRepository.Entities.Where(staffExp).Where(x => x.UserID == teacher.UserID)
                       from student in soc.CF_Student 
                       from user in UserRepository.Entities.Where(x => x.UserID == student.UserID) 
                       from contact in StudentContactRepository.Entities.Where(x => x.UserID == student.UserID)
                       from classmajor in ClassmajorRepository.Entities.Where(x => x.ClassmajorID == student.ClassmajorID) 
                       group student by new TeacherCommunicateView 
                       {
                           UserID = student.UserID,
                           ClassmajorID = classmajor.ClassmajorID,
                           ClassmajorNo = classmajor.No,
                           ClassmajorName = classmajor.Name,
                           LoginID = user.LoginID,
                           Name = user.Name,
                           QQ = contact.QQ
                       } into g
                       select g.Key);

            return sql;
        }

        public IQueryable<StudentCommunicateView> GetStudentCommunicateViewQueryable(Expression<Func<CF_Student, bool>> studentExp,
            Expression<Func<DQP_SOC, bool>> socExp)
        {
            var sql = (from soc in SOCRepository.GetList(socExp)
                       from me in soc.CF_Student.AsQueryable().Where(studentExp) 
                       from teacher in SOCStaffRepository.Entities.Where(x => x.RecordStatus > (int)SYS_STATUS.UNUSABLE && x.SOCID == soc.SOCID)
                       from user in UserRepository.Entities.Where(x => x.UserID == teacher.UserID)
                       from staff in StaffRepository.Entities.Where(x => x.UserID == teacher.UserID)
                       from profile in StaffProfileRepository.Entities.Where(x => x.UserID == staff.UserID)
                       group staff by new StudentCommunicateView
                       {
                           UserID = staff.UserID,
                           RoleOrder = 0,
                           Role = "老师",
                           ClassmajorID = null,
                           ClassmajorNo = null,
                           ClassmajorName = null,
                           LoginID = user.LoginID,
                           Name = user.Name,
                           QQ = profile.QQ
                       } into g
                       select g.Key)
                       .Concat(
                       from soc in SOCRepository.GetList(socExp)
                       from me in soc.CF_Student.AsQueryable().Where(studentExp) 
                       from student in soc.CF_Student
                       from user in UserRepository.Entities.Where(x => x.UserID == student.UserID)
                       from contact in StudentContactRepository.Entities.Where(x => x.UserID == student.UserID)
                       from classmajor in ClassmajorRepository.Entities.Where(x => x.ClassmajorID == student.ClassmajorID)
                       group student by new StudentCommunicateView
                       {
                           UserID = student.UserID,
                           RoleOrder = 1,
                           Role = "学生",
                           ClassmajorID = classmajor.ClassmajorID,
                           ClassmajorNo = classmajor.No,
                           ClassmajorName = classmajor.Name,
                           LoginID = user.LoginID,
                           Name = user.Name,
                           QQ = contact.QQ
                       } into g
                       select g.Key);

            return sql;
        }
    }
}