public User SelectById(int id)
{
using (CeLSDEntities entity = new CeLSDEntities())
{
return(entity.Users.Single <User>(p => p.UserId == id));
}
}
public List <CourseModel> GetMyCourses(int userId)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
List <CourseModel> list = (from courses in dbContext.Courses
join ca in dbContext.CoursesUsers on courses.CourseId equals ca.CourseId
join user in dbContext.Users on ca.UserId equals user.UserId
where user.UserId == userId
select new CourseModel {
CourseName = courses.CourseName, ProfessorName = ca.User.UserName, CourseId = courses.CourseId
}).ToList();
var coursesList = GetCourses();
foreach (var professor in coursesList)
{
foreach (var courses in list)
{
if (professor.CourseId == courses.CourseId)
{
courses.ProfessorName = professor.ProfessorName;
}
}
}
return(list);
}
}
public string Update(int userId, string userName, string userEmail, string userPassword, int userType)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
try
{
dbContext.Database.Connection.Open();
User user = dbContext.Users.Single <User>(o => o.UserId == userId);
user.UserName = userName;
user.UserEmail = userEmail;
user.UserName = userName;
user.UserPassword = md5.GetMd5Sum(userPassword);
user.UserType = userType;
dbContext.SaveChanges();
return("Success");
}
catch (Exception exp)
{
throw new Exception(exp.Message, exp);
}
finally
{
dbContext.Database.Connection.Close();
}
}
}
public User Login(string email, string password)
{
using (CeLSDEntities entity = new CeLSDEntities())
{
string pw = md5.GetMd5Sum(password);
return(entity.Users.SingleOrDefault(p => p.UserEmail == email && p.UserPassword == pw));
}
}
public List <UserType> SelectAll()
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
return((from type in dbContext.UserTypes
select type).ToList());
}
}
public List <Topic> GetTopics(int id)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
return((from courses in dbContext.Topics
where courses.CourseId == id
select courses).ToList());
}
}
public List <User> SelectAllProfessors()
{
using (CeLSDEntities entity = new CeLSDEntities())
{
return((from user in entity.Users
join type in entity.UserTypes on user.UserType equals type.UserTypeId
where user.UserType == 2
select user).ToList <User>());
}
}
public List <int> GetEnrollment(int userId, int courseId)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
return((from courses in dbContext.Courses
join ca in dbContext.CoursesUsers on courseId equals ca.CourseId
join user in dbContext.Users on ca.UserId equals user.UserId
where user.UserType == 3 && courses.CourseId == courseId && user.UserId == userId
select courses.CourseId).ToList());
}
}
public List <CourseModel> GetCourses()
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
return((from courses in dbContext.Courses
join ca in dbContext.CoursesUsers on courses.CourseId equals ca.CourseId
join user in dbContext.Users on ca.UserId equals user.UserId
where user.UserType == 2
select new CourseModel {
CourseName = courses.CourseName, ProfessorName = user.UserName, CourseId = courses.CourseId
}).ToList());
}
}
public bool CheckEnroll(int userId, int courseId)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
CoursesUser coursesUser = dbContext.CoursesUsers.SingleOrDefault(c => c.UserId == userId && c.CourseId == courseId);
if (coursesUser == null)
{
return(false);
}
return(true);
}
}
public List <UserModel> SelectAll()
{
using (CeLSDEntities entity = new CeLSDEntities())
{
return((from user in entity.Users
join type in entity.UserTypes on user.UserType equals type.UserTypeId
select new UserModel
{
UserId = user.UserId,
UserEmail = user.UserEmail,
UserName = user.UserName,
UserPassowrd = user.UserPassword,
UserType = type.Slug
}).ToList <UserModel>());
}
}
public string UnEnroll(int userId, int courseId)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
try
{
CoursesUser coursesUser = dbContext.CoursesUsers.Single <CoursesUser>(c => c.UserId == userId && c.CourseId == courseId);
dbContext.CoursesUsers.Remove(coursesUser);
dbContext.SaveChanges();
return("Success");
}
catch (Exception e)
{
throw new Exception(e.InnerException.ToString());
}
}
}
public string UpdatePassword(int userId, string userPassword)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
try
{
dbContext.Database.Connection.Open();
User user = dbContext.Users.Single <User>(o => o.UserId == userId);
user.UserPassword = md5.GetMd5Sum(userPassword);
dbContext.SaveChanges();
return("");
}
catch (Exception exp)
{
throw new Exception(exp.Message, exp);
}
}
}
public string Enroll(int userId, int courseId)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
try
{
CoursesUser coursesUser = new CoursesUser()
{
UserId = userId,
CourseId = courseId
};
dbContext.CoursesUsers.Add(coursesUser);
dbContext.SaveChanges();
return("Success");
}
catch (Exception e)
{
throw new Exception(e.InnerException.ToString());
}
}
}
public string Insert(string courseName, int profesorId)
{
using (CeLSDEntities dbcontext = new CeLSDEntities())
{
try
{
Cours course = new Cours();
course.CourseName = courseName;
var n = dbcontext.Courses.Add(course);
dbcontext.SaveChanges();
var x = dbcontext.Courses.ToList().Last <Cours>();
InsertProfessor(x.CourseId, profesorId);
return("Success");
}
catch (Exception e)
{
throw new Exception(e.Message, e);
}
}
}
public string Insert(string topicName, string topicDocxname, int courseId)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
try
{
Topic topic = new Topic()
{
TopicsName = topicName,
TopicsFile = topicDocxname,
CourseId = courseId
};
dbContext.Topics.Add(topic);
dbContext.SaveChanges();
return("Success");
}
catch (Exception exp)
{
throw new Exception(exp.Message, exp);
}
}
}
public string Update(int courseId, string courseName)
{
using (CeLSDEntities dbcontext = new CeLSDEntities())
{
try
{
dbcontext.Database.Connection.Open();
Cours course = dbcontext.Courses.Single <Cours>(c => c.CourseId == courseId);
course.CourseName = courseName;
return("Success");
}
catch (Exception e)
{
throw new Exception(e.Message, e);
}
finally
{
dbcontext.Database.Connection.Close();
}
}
}
public string Delete(int courseId)
{
using (CeLSDEntities dbcontext = new CeLSDEntities())
{
try
{
dbcontext.Database.Connection.Open();
Cours course = dbcontext.Courses.Single <Cours>(c => c.CourseId == courseId);
dbcontext.Courses.Remove(course);
dbcontext.SaveChanges();
return("Success");
}
catch (Exception e)
{
throw new Exception(e.Message, e);
}
finally
{
dbcontext.Database.Connection.Close();
}
}
}
public string InsertProfessor(int courseId, int profesorId)
{
using (CeLSDEntities dbcontext = new CeLSDEntities())
{
try
{
CoursesUser coursesUser = new CoursesUser
{
CourseId = courseId,
UserId = profesorId
};
var n = dbcontext.CoursesUsers.Add(coursesUser);
dbcontext.SaveChanges();
return("Success");
}
catch (Exception e)
{
throw new Exception(e.Message, e);
}
}
}
public string Insert(string userName, string userEmail, string userPassword, int userType)
{
using (CeLSDEntities dbContext = new CeLSDEntities())
{
try
{
User user = new User()
{
UserName = userName,
UserEmail = userEmail,
UserPassword = md5.GetMd5Sum(userPassword),
UserType = userType
};
dbContext.Users.Add(user);
dbContext.SaveChanges();
return("Success");
}
catch (Exception exp)
{
throw new Exception(exp.Message, exp);
}
}
}
public string Delete(int userId)
{
using (CeLSDEntities entity = new CeLSDEntities())
{
try
{
entity.Database.Connection.Open();
User person = entity.Users.Single <User>(o => o.UserId == userId);
entity.Users.Remove(person);
entity.SaveChanges();
return("Success");
}
catch (Exception exp)
{
throw new Exception(exp.Message, exp);
}
finally
{
entity.Database.Connection.Close();
}
}
}