using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EMISOnline.Entities;
using EMISOnline.ViewModel.Educational;
using Bowin.Common.Linq.Entity;
using System.Linq.Expressions;
using Bowin.Common.Linq;
using EMISOnline.DataLogic.Educational;

namespace EMISOnline.CommonLogic.EducationalServices
{
    public class StudentsServices : BaseServices, IStudentsServices
    {
        public StudentsDAL StudentsDAL { get; set; }

        public IGridResultSet<StudentView> GetStudentList(int pageIndex, int pageSize, string loginID, string name, int? studentStatus,
            string schoolyear, string standardName)
        {
            Expression<Func<StudentView, bool>> exp = (e => true);
            if (!string.IsNullOrEmpty(loginID))
            {
                exp = exp.And(e => e.LoginID.Contains(loginID.Trim()));
            }
            if (!string.IsNullOrEmpty(name))
            {
                exp = exp.And(e => e.Name.Contains(name.Trim()));
            }
            if (studentStatus.HasValue && studentStatus > 0)
            {
                exp = exp.And(e => e.StudentStatus == studentStatus);
            }
            if (!string.IsNullOrEmpty(schoolyear))
            {
                exp = exp.And(e => e.SchoolyearName.Contains(schoolyear.Trim()));
            }
            if (!string.IsNullOrEmpty(standardName))
            {
                exp = exp.And(e => e.StandardName.Contains(standardName.Trim()));
            }

            var list = StudentsDAL.GetStudentList().Where(exp).OrderByDescending(r => r.CreateTime).ToGridResultSet(pageIndex, pageSize);

            return list;
        }
    }
}