/// <summary>
/// Get information from HQ about: employees and salaries.
/// Then, ensure that BO db contains only those employees and salaries that also
/// exist in HQ.
/// Then, delete any employeeHours and salaries which are connected to a deleted employee.
/// </summary>
/// <returns></returns>
public async Task Synchronize()
{
if (hqApiClient != null)
{
try {
lock (this.locker) {
if (synchronizing)
{
_log.Warn("Synchronization skipped, because it is already running");
return;
}
synchronizing = true;
}
_log.Debug("Starting synchronization");
List <HQEmployee> hqEmployees = await hqApiClient.ListEmployees(
this.confService.GetBranchOfficeId());
List <Employee> boEmployees;
if (hqEmployees != null && hqEmployees.Count != 0)
{
boEmployees = daoService.GetAllEmployees();
// add all the employes from HQ into BO
for (int i = 0; i < hqEmployees.Count; i++)
{
var hqEmp = hqEmployees[i];
int hqEmpId = hqEmp.ID;
var hqAsBoEmployee = new Employee(hqEmp);
bool empPresent = VerifyEmployeeInCollection(boEmployees, hqAsBoEmployee);
if (!empPresent)
{
daoService.AddEmployee(hqAsBoEmployee);
}
// now, if the employee was just added, it will most surely have different Id
// We need to know this Id, so that we can assign later a salary
// to an employee in BO.
int boEmployeeId = daoService.GetEmployeeIdByMail(hqAsBoEmployee.Email);
var boSalaries = daoService.GetSalariesForAnEmployee(boEmployeeId);
// add all the salaries from HQ into BO
List <HQSalary> hqSalaries = await hqApiClient.ListSalariesForEmployee(hqEmpId);
if (hqSalaries != null && hqSalaries.Count != 0)
{
for (int s = 0; s < hqSalaries.Count; s++)
{
var hqAsBoSalary = new Salary(hqSalaries[s]);
hqAsBoSalary.EmployeeId = boEmployeeId;
bool salaryPresent = VerifySalaryInCollection(boSalaries, hqAsBoSalary);
if (!salaryPresent)
{
daoService.AddSalary(hqAsBoSalary);
}
}
}
}
}
else
{
_log.Info("No employees found in headquarters");
}
// remove all the employees in BO that are not present in HQ
boEmployees = daoService.GetAllEmployees();
if (boEmployees != null)
{
_log.DebugFormat("BO Employees count: {0}", boEmployees.Count());
for (int i = 0; i < boEmployees.Count; i++)
{
var boEmp = boEmployees[i];
bool empPresent = VerifyEmployeeInCollection(hqEmployees, boEmp);
if (!empPresent)
{
_log.InfoFormat("Deleting Employee {0} together with its related EmployeeHours and Salaries", boEmp.EmployeeId);
daoService.DeleteEmployee(boEmp.EmployeeId);
// remove all the employeesHours for the deleted employee
var employeeHoursColl = daoService.GetEmployeeHoursForAnEmployee(boEmp.EmployeeId);
for (int j = 0; j < employeeHoursColl.Count; j++)
{
daoService.DeleteEmployeeHours(employeeHoursColl[j].EmployeeHoursId);
}
// remove all the salaries for the deleted employee
var salariesColl = daoService.GetSalariesForAnEmployee(boEmp.EmployeeId);
for (int j = 0; j < salariesColl.Count; j++)
{
daoService.DeleteSalary(salariesColl[j].SalaryId);
}
}
else
{
_log.DebugFormat("Not deleting BO Employee, because it exists in HQ too: {0}", boEmp);
}
}
}
else
{
_log.DebugFormat("BO Employees count: 0");
}
_log.Info("Synchronization was successful");
this.daoService.InformOnDBContents();
} catch (System.Net.Http.HttpRequestException ex) {
_log.WarnFormat("Synchronizing with HQ failed (is the HQ server running?). Ex: {0}", ex.Message);
} finally {
synchronizing = false;
}
}
}
