private async Task <LoadAllDepartments.Response> GetAllDepartmentsInternal()
{
using (var context = this.contextFactory())
{
var arcEmployees = new CspEmployeeQuery(context).Get();
var allDepartments = await context
.Department
.Where(x => (x.IsDelete != true) && (x.CompanyId == this.configuration.CompanyId))
.GroupJoin(arcEmployees, d => d.ChiefId, e => e.Id, this.mapDepartment)
.GroupJoin(arcEmployees, d => d.DepartmentId, e => e.DepartmentId.ToString(), this.countEmployees)
.ToListAsync();
var head = allDepartments.FirstOrDefault(x => x.Info.IsHeadDepartment && (x.Info.Abbreviation == this.configuration.HeadDepartmentAbbreviation));
if (head == null)
{
return(new LoadAllDepartments.Response(new DepartmentInfo[0]));
}
var processedIds = new HashSet <string>()
{
head.Info.DepartmentId
};
var tree = new DepartmentsTreeNode(head.Info, head.PeopleCount, this.CreateTree(allDepartments, head.Info.DepartmentId, processedIds));
var departments = tree.AsEnumerable().Where(x => x.CountAllEmployees() != 0).Select(x => x.DepartmentInfo).ToList();
return(new LoadAllDepartments.Response(departments));
}
}
/// <param name="departmentId">Node for which descandants are requested</param>
/// <param name="processedIds">a hashset with processed department ids to prevent stackoverflow</param>
/// <param name="allDepartments">all possible departments</param>
private List <DepartmentsTreeNode> CreateTree(IReadOnlyCollection <DepartmentInfoWithPeopleCount> allDepartments,
string departmentId,
HashSet <string> processedIds)
{
var childrenDepartments = allDepartments
.Where(x => (x.Info.ParentDepartmentId == departmentId) && !processedIds.Contains(x.Info.DepartmentId))
.ToList();
processedIds.UnionWith(childrenDepartments.Select(x => x.Info.DepartmentId));
var children = new List <DepartmentsTreeNode>();
foreach (var department in childrenDepartments)
{
var child = new DepartmentsTreeNode(department.Info, department.PeopleCount, this.CreateTree(allDepartments, department.Info.DepartmentId, processedIds));
children.Add(child);
}
return(children);
}