/// <summary>
/// Updates Employee entity performing all necessary validations.
/// </summary>
/// <param name="aEmployee">Employee entity to update</param>
/// <param name="aUpdateOption">Do nothing, Do SaveChanges</param>
/// <param name="aSalaryPlanId">SalaryPlan Id, if <= 0 then unchanged</param>
/// <param name="aLastName">Last name, if null then unchanged</param>
/// <param name="aFirstName">First name, if null then unchanged</param>
/// <param name="aMiddleName">Middle name, if null then unchanged, if empty then set to null</param>
/// <param name="aEmploymentDate">Employment date, if zero then unchanged</param>
/// <param name="aManager">Manager entity, if null then set to null</param>
/// <returns>Success, A required field is incorrect, EmployeeType is Employee but this Employee has subordinates, Manager is already this Employee's subordinate</returns>
public EEmployeeUpdateResult UpdateEmployee(Employee aEmployee, EEmployeeUpdateOption aUpdateOption, int aSalaryPlanId, string aLastName, string aFirstName, string aMiddleName, DateTime aEmploymentDate, Employee aManager)
{
if (aSalaryPlanId <= 0)
{
aSalaryPlanId = aEmployee.SalaryPlanId;
}
aLastName ??= aEmployee.LastName;
aFirstName ??= aEmployee.FirstName;
if (aMiddleName == null)
{
aMiddleName = aEmployee.MiddleName;
}
else if (aMiddleName.Length == 0)
{
aMiddleName = null;
}
if (aEmploymentDate.Ticks <= 0L)
{
aEmploymentDate = aEmployee.EmploymentDate;
}
EEmployeeUpdateResult res = EEmployeeUpdateResult.FailRequiredField;
if ((aSalaryPlanId > 0) && !string.IsNullOrWhiteSpace(aLastName) && !string.IsNullOrWhiteSpace(aFirstName) && (aEmploymentDate >= CompanyDateOfEstablishment))
{
SalaryPlan aSalaryPlan = EmployeeListDB.SalaryPlans.Find(aSalaryPlanId);
if (aSalaryPlan != null)
{
res = EEmployeeUpdateResult.FailEmployeeType;
if ((aSalaryPlan.EmployeeType > SalaryPlan.EEmployeeType.Employee) || (aEmployee.Subordinates == null) || !aEmployee.Subordinates.Any())
{
res = EEmployeeUpdateResult.FailManagerIsSubordinate;
if ((aManager == null) || !EmployeeHelper.IsSubordinate(aEmployee, aManager))
{
aEmployee.LastName = aLastName;
aEmployee.FirstName = aFirstName;
aEmployee.MiddleName = aMiddleName;
aEmployee.EmploymentDate = aEmploymentDate;
aEmployee.SalaryPlanId = aSalaryPlanId;
aEmployee.Manager = aManager;
if (aUpdateOption == EEmployeeUpdateOption.SaveChanges)
{
EmployeeListDB.SaveChanges();
}
res = EEmployeeUpdateResult.Success;
}
}
}
}
return(res);
}
/// <summary>
/// Creates a new Employee entity performing all necessary validations.
/// </summary>
/// <param name="aNewEmployee">Newly created Employee</param>
/// <param name="aUpdateOption">Do nothing, Add to table Employees, Add to table Employees and do SaveChanges</param>
/// <param name="aSalaryPlanId">SalaryPlan Id</param>
/// <param name="aLastName">Last name</param>
/// <param name="aFirstName">First name</param>
/// <param name="aMiddleName">Middle name</param>
/// <param name="aEmploymentDate">Employment date</param>
/// <param name="aManager">Manager entity</param>
/// <returns>Success, A required field is incorrect, Employee with the same name already exists</returns>
public EEmployeeUpdateResult CreateNewEmployee(out Employee aNewEmployee, EEmployeeUpdateOption aUpdateOption, int aSalaryPlanId, string aLastName, string aFirstName, string aMiddleName, DateTime aEmploymentDate, Employee aManager = null)
{
EEmployeeUpdateResult res = EEmployeeUpdateResult.FailRequiredField;
aNewEmployee = null;
if ((aSalaryPlanId > 0) && !string.IsNullOrWhiteSpace(aLastName) && !string.IsNullOrWhiteSpace(aFirstName) && (aEmploymentDate >= CompanyDateOfEstablishment))
{
SalaryPlan aSalaryPlan = EmployeeListDB.SalaryPlans.Find(aSalaryPlanId);
if (aSalaryPlan != null)
{
res = EEmployeeUpdateResult.FailAlreadyExists;
var aEmployee = new Employee
{
LastName = aLastName,
FirstName = aFirstName,
MiddleName = aMiddleName,
EmploymentDate = aEmploymentDate,
SalaryPlanId = aSalaryPlanId
};
if (!EmployeeListDB.Employees.Any(v => v.Equals(aEmployee)))
{
aEmployee.Manager = aManager;
aNewEmployee = aEmployee;
if (aUpdateOption > EEmployeeUpdateOption.None)
{
EmployeeListDB.Employees.Add(aEmployee);
if (aUpdateOption == EEmployeeUpdateOption.SaveChanges)
{
EmployeeListDB.SaveChanges();
}
}
res = EEmployeeUpdateResult.Success;
}
}
}
return(res);
}
