using System;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using ExcercisesDAL;

namespace ExercisesViewModels
{
   public class GradeViewModel
    {
        private GradeModel _model;
        public int Id { get; set; }
        public int StudentId { get; set; }
        public int CourseId { get; set; }
        public int Mark { get; set; }
        public string Comments { get; set; }
        public string Timer { get; set; }



        //constructor

        public GradeViewModel()
        {
            _model = new GradeModel();
        }


        //methods
        public List<GradeViewModel> GetAll(int id)
        {
            List<GradeViewModel> allVms = new List<GradeViewModel>();

            try
            {
                List<Grades> allGrades = _model.GetAllGrades(id);
                foreach (Grades grd in allGrades)
                {
                    GradeViewModel grdVm = new GradeViewModel();
                    grdVm.Id = grd.Id;
                    grdVm.Mark = grd.Mark;
                    grdVm.StudentId = grd.StudentId;
                    grdVm.CourseId = grd.CourseId;
                    grdVm.Comments = grd.Comments;
                    grdVm.Timer = Convert.ToBase64String(grd.Timer);
                    allVms.Add(grdVm);
                }
            }
            catch (Exception ex)
            {
                Console.Write("Problem in " + GetType().Name + " " +
                    MethodBase.GetCurrentMethod().Name + " " + ex.Message);
                throw ex;
            }
            return allVms;
        }


        public int Update()
        {
            UpdateStatus gradesUpdated = UpdateStatus.Failed;
            try
            {
                Grades grd = new Grades();
                grd.Id = Id;
                grd.StudentId = StudentId;
                grd.CourseId = CourseId;
                grd.Mark = Mark;
                grd.Comments = Comments;
                grd.Timer = Convert.FromBase64String(Timer);
                gradesUpdated = _model.Update(grd);
            }
            catch (Exception ex)
            {
                Console.Write("Problem in " + GetType().Name + " " +
                    MethodBase.GetCurrentMethod().Name + " " + ex.Message);
                throw ex;
            }
            return Convert.ToInt16(gradesUpdated);
        }

    }
}