private async Task <ImmutableList <BranchGroupCompleteData> > GetBranchesToRemove(BranchGroupCompleteData targetBranch)
{
if (targetBranch.DirectDownstreamBranchGroups.Contains(newBaseBranch))
{
// We're deleting an old branch, and all of its stuff moves down. This is like an integration branch rolling up. Easy.
return(new[] { targetBranch }.ToImmutableList());
}
var allBranches = await repository.AllBranches().FirstOrDefaultAsync();
var actualBranches = await repository.DetectUpstream(sourceBranch);
var upstreamBranches = await branchSettings.GetAllUpstreamBranches(sourceBranch).FirstAsync();
// Filter to only the actual upstream branches; don't just remove anything that is downstream and happens to match!
actualBranches = actualBranches.Intersect(upstreamBranches.Select(b => b.GroupName)).ToImmutableList();
// FIXME - this is the _branches_ not the _groups_ that are up-to-date. That should be okay for these purposes.
var downstream = (await branchSettings.GetBranchDetails(newBaseBranch).FirstAsync()).DownstreamBranchGroups;
var consolidatingBranches = (await(from branch in allBranches.ToObservable()
where actualBranches.Contains(branch.GroupName) || branch.Branches.Select(b => b.Name).Any(actualBranches.Contains)
where downstream.Contains(branch.GroupName)
from result in GetLatestBranchTuple(branch)
select result
).ToArray()).ToImmutableHashSet();
var branchesToRemove = await FindReadyToConsolidate(consolidatingBranches);
branchesToRemove = branchesToRemove.Concat(allBranches.Where(g => g.Branches.Select(b => b.Name).Contains(sourceBranch))).ToImmutableList();
return(branchesToRemove);
}
public IObservable <BranchGroupCompleteData> GetBranchDetails(string branchName)
{
return(this.repositoryState.RemoteBranches()
.Select(remoteBranches =>
{
return branchSettings.GetConfiguredBranches()
.Select(branches => branches.FirstOrDefault(branch => branch.GroupName == branchName)
?? branches.FirstOrDefault(branch => branchIteration.IsBranchIteration(branch.GroupName, branchName)))
.Select(branchBasicDetails => branchSettings.GetBranchDetails(branchBasicDetails?.GroupName ?? branchName))
.Switch()
.Select(branchDetails => AddRemoteBranchNames(branchDetails, remoteBranches));
}).Switch());
}