public async Task <GroupMemberDiff> GetMemberDiffAsync(GrouperDocument document, bool includeUnchanged = false)
{
if (document is null)
{
throw new ArgumentNullException(nameof(document));
}
var currentMembers = await GetCurrentMembersAsync(document);
var targetMembers = await GetTargetMembersAsync(document);
IGroupOwnerSource ownerSource = GetOwnerSource(document);
if (ownerSource != null)
{
if (document.Owner != GroupOwnerActions.MatchSource)
{
var owners = new GroupMemberCollection();
await ownerSource.GetGroupOwnersAsync(owners, document.GroupId);
if (document.Owner == GroupOwnerActions.KeepExisting)
{
owners.IntersectWith(currentMembers);
}
targetMembers.Add(owners);
}
}
if (!currentMembers.ContainsMatchingMemberType(targetMembers))
{
throw new InvalidOperationException("Member types does not match");
}
GroupMemberCollection unchangedMembers = new GroupMemberCollection();
if (includeUnchanged)
{
unchangedMembers = currentMembers.Clone();
unchangedMembers.IntersectWith(targetMembers);
}
int currentCount = currentMembers.Count;
currentMembers.FilterUniqueMember(targetMembers);
double changeRatio;
if (currentCount == 0)
{
changeRatio = targetMembers.Count == 0 ? 1.0 : targetMembers.Count;
}
else
{
changeRatio = (currentCount - currentMembers.Count + targetMembers.Count) / (double)currentCount;
}
return(new GroupMemberDiff(document, targetMembers, currentMembers, unchangedMembers, changeRatio));
}
public void TestIntersectWith()
{
GroupMemberCollection collection1 = new GroupMemberCollection();
GroupMemberCollection collection2 = new GroupMemberCollection();
collection1.Add(azureMember1);
collection1.Add(azureMember2);
collection2.Add(azureMember2);
collection2.Add(azureMember3);
collection1.IntersectWith(collection2);
Assert.Equal(1, collection1.Count);
Exception exception = Record.Exception(() => collection1.AsEnumerable().First(m => m.Id == azureMember2.Id));
Assert.Null(exception);
}