/*
* Logs the user into the system.
*
* Takes username and password in
* If the username and password is valid, this generates a token for the employee
* This token is stored into the database for validation when using in other methods.
*/
public WCF_Employee Login(string username, string password)
{
WCF_Employee wcfEmployee = null;
// If login succeeds, fetch the token, otherwise, return null
// Validate username and password
if (Membership.ValidateUser(username, password))
{
// Fetch or generate token
var context = new LogicUniversityEntities();
var query = from x in context.employees where x.user_id == username select x;
var result = query.ToList();
if (query.Any())
{
// Generate a token for the resulting employee.
String token = GenerateToken();
// Store token in database
var first = result.First();
first.token = token;
System.Diagnostics.Debug.WriteLine(context.SaveChanges());
// Pass the token to the service consumer
wcfEmployee = new WCF_Employee(first.employee_id, first.employee_name, first.email_id, username, first.department_id, first.supervisor_id, token, Roles.GetRolesForUser(username).FirstOrDefault());
}
}
// Return the token to user
return(wcfEmployee);
}
// Logs the user out
/*
* Doing this will clear the token in the database for the employee, if it exists.
*/
public string Logout(string token)
{
var context = new LogicUniversityEntities();
var query = from x in context.employees where x.token == token select x;
var result = query.First();
result.token = null;
context.SaveChanges();
return("done");
}
