private void Print(EmployeeTree tree, int level)
{
var hyphens = string.Join("", Enumerable.Repeat("-", 2 * level));
_console.WriteLine($"{hyphens}{tree.Id} {tree.Name}");
foreach (var employee in tree.DirectReports)
{
Print(employee, level + 1);
}
}
private static void CreateOrgChart(IList <Employee> employees, EmployeeTree topOfTree)
{
foreach (var employee in employees)
{
if (employee.ManagerId == topOfTree.Id)
{
topOfTree.AddDirectReport(employee.Id, employee.Name);
CreateOrgChart(employees, topOfTree.DirectReports.Last());
}
}
}
public void Print(IList <Employee> employees)
{
if (employees.Count(_ => _.ManagerId == null) == 0)
{
throw new NoCEOException("This organisation does not have a CEO");
}
if (employees.Count(_ => _.ManagerId == null) > 1)
{
throw new MultipleCEOsException(
"This company has more than 1 CEO. Contact the software development team if you need to support this scenario.");
}
var ceo = employees.SingleOrDefault(_ => _.ManagerId == null);
var topOfTree = new EmployeeTree(ceo.Id, ceo.Name);
CreateOrgChart(employees, topOfTree);
Print(topOfTree, 0);
}