public bool Authenticate(AuthModel obj)
{
using (LINQ_to_SQLDataContext dataContext = new LINQ_to_SQLDataContext())
{
return(dataContext.tbl_UserModels.Any(m => m.Email == obj.Email && m.Password == obj.Password && m.IsAdmin == true && m.IsActive == true));
}
}
public string IssueBook(BookHistoryModel obj)
{
try
{
using (LINQ_to_SQLDataContext dbContext = new LINQ_to_SQLDataContext())
{
if (dbContext.tbl_UserModels.Any(x => x.UserID == obj.UserID && x.IsAdmin == false) && dbContext.tbl_BookModels.Any(x => x.BookID == obj.BookID))
{
if (dbContext.tbl_BookHistoryModels.Any(x => x.BookID == obj.BookID && x.ReturnedAt == null))
{
return(StringLiterals.BookIsAssignedToUser);
}
if (dbContext.tbl_BookModels.Any(x => x.BookID == obj.BookID && (x.IsActive == false || x.IsAvailable == false)))
{
return(StringLiterals.Error);
}
dbContext.tbl_BookModels.SingleOrDefault(x => x.BookID == obj.BookID).IsAvailable = false;
obj.OperationPerofrmedAt = DateTime.Now;
SqlCommand cmd = new SqlCommand("spAddHistory");
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@BookID", obj.BookID);
cmd.Parameters.AddWithValue("@UserID", obj.UserID);
cmd.Parameters.AddWithValue("@OperationPerformedAt", obj.OperationPerofrmedAt);
cmd.Parameters.AddWithValue("@ReturnedAt", System.Data.SqlTypes.SqlDateTime.MinValue);
cmd.Parameters.AddWithValue("@Remarks", obj.Remarks);
cmd.Parameters.AddWithValue("@PerformedByID", obj.PerformedByID);
dbcon.ExeNonQuery(cmd);
SqlCommand cmdForLog = new SqlCommand("spAddLog");
cmdForLog.CommandType = CommandType.StoredProcedure;
cmdForLog.Parameters.AddWithValue("@BookID", obj.BookID);
cmdForLog.Parameters.AddWithValue("@UserID", obj.UserID);
dbcon.ExeNonQuery(cmdForLog);
dbContext.SubmitChanges();
return(StringLiterals.IssueBookMsg + (obj.OperationPerofrmedAt.AddDays(30)));
}
else
{
return(StringLiterals.Error);
}
}
}
catch
{
throw;
}
}
public string ReturnBook(int bookID, string remarks)
{
using (LINQ_to_SQLDataContext dbContext = new LINQ_to_SQLDataContext())
{
if (dbContext.tbl_BookModels.Any(x => x.BookID == bookID && x.IsActive && !x.IsAvailable))
{
dbContext.tbl_BookModels.Where(x => x.BookID == bookID).FirstOrDefault().IsAvailable = true;
dbContext.tbl_BookHistoryModels.OrderByDescending(x => x.BookID == bookID).FirstOrDefault().ReturnedAt = DateTime.Now;
if (dbContext.tbl_BookHistoryModels.Any(x => x.BookID == bookID && (x.Remarks != remarks || (x.ReturnedAt - x.OperationPerformedAt).TotalDays > 30)))
{
return(StringLiterals.FineMsg);
}
dbContext.SubmitChanges();
return(StringLiterals.ReturnMsg);
}
else
{
return(StringLiterals.Error);
}
}
}
public string RemoveUser(int removeID)
{
try
{
using (LINQ_to_SQLDataContext dbContext = new LINQ_to_SQLDataContext())
{
if (dbContext.tbl_UserModels.Any(x => x.UserID == removeID))
{
dbContext.tbl_UserModels.SingleOrDefault(x => x.UserID == removeID).IsActive = false;
dbContext.SubmitChanges();
return(StringLiterals.RemoveUserMsg);
}
else
{
return(StringLiterals.Error);
}
}
}
catch
{
throw;
}
}
public string RemoveBook(int bookID)
{
try
{
using (LINQ_to_SQLDataContext dbContext = new LINQ_to_SQLDataContext())
{
if (dbContext.tbl_BookModels.Any(x => x.BookID == bookID && x.IsActive))
{
dbContext.tbl_BookModels.SingleOrDefault(x => x.BookID == bookID).IsActive = false;
dbContext.tbl_BookModels.SingleOrDefault(x => x.BookID == bookID).IsAvailable = false;
dbContext.SubmitChanges();
return(StringLiterals.RemoveBookMsg);
}
else
{
return(StringLiterals.Error);
}
}
}
catch
{
throw;
}
}
