public static List<DepartmentFlat> doFlat(IEnumerable<CompanyDepartment> departments) {
List<DepartmentFlat> result = new List<DepartmentFlat>();
foreach (var grp in departments.GroupBy(d => d.CompanyId)) {
var tree = dbToTree(grp.ToArray());
var path = new Department[DepartmentFlat.maxDeep];
ForEach(tree, 0, path, (pth, lev) => {
DepartmentFlat res = new DepartmentFlat();
for (int i = 0; i <= lev; i++) res.setLevel(i, pth[i].Id, pth[i].Title);
var fakeId = pth[lev].Id;
for (int i = lev + 1; i < DepartmentFlat.maxDeep; i++) res.setLevel(i, fakeId, null);
result.Add(res);
});
}
return result;
}
static DepartmentFlat Clone(DepartmentFlat src, long oldId, long userId, string userTitle, int levId, string levTitle, long modId, string modTitle) {
var its = new List<DepItem>();
var st = 0;
foreach (var it in src.Items) {
switch (st) {
case 0: its.Add(new DepItem() { Id = -it.Id, Title = it.Title }); if (it.Id == oldId) st = 1; break;
//case 1: its.Add(new DepItem() { Id = -it.Id, Title = it.Title }); st = 2;
case 1: its.Add(new DepItem() { Id = userId, Title = userTitle }); st = 2; break;
case 2: its.Add(new DepItem() { Id = levId, Title = levTitle }); st = 3; break;
case 3: its.Add(new DepItem() { Id = modId, Title = modTitle }); st = 4; break;
case 4: its.Add(new DepItem() { Id = modId, Title = null }); break;
}
}
return new DepartmentFlat() { Items = its.ToArray() };
}
