cmd/dynamo-browse
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backstack: reimplemented the backstack

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This is a much cleaner implementation.
This commit is contained in:
Leon Mika 2022-08-14 09:16:28 +10:00
parent ec9ac34d26
commit 6c5787b271
3 changed files with 55 additions and 49 deletions
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12
internal/dynamo-browse/services/workspaces/service.go
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@ -47,9 +47,8 @@ func (s *ViewSnapshotService) PopSnapshot() (*serialisable.ViewSnapshot, error)
vs, err := s.store.Head()
if err != nil {
return nil, errors.Wrap(err, "cannot get snapshot head")
}
if vs == nil {
return vs, nil
} else if vs == nil || vs.BackLink == 0 {
return nil, nil
}
if err := s.store.SetAsHead(vs.BackLink); err != nil {
@ -59,5 +58,12 @@ func (s *ViewSnapshotService) PopSnapshot() (*serialisable.ViewSnapshot, error)
return nil, errors.Wrap(err, "cannot remove old ID")
}
vs, err = s.store.Head()
if err != nil {
return nil, errors.Wrap(err, "cannot get snapshot head")
} else if vs == nil || vs.BackLink == 0 {
return nil, nil
}
return vs, nil
}