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package commitquery
import (
stderrors "errors"
giterrors "codeberg.org/lindenii/furgit/errors"
commitgraphread "codeberg.org/lindenii/furgit/format/commitgraph/read"
objectcommit "codeberg.org/lindenii/furgit/object/commit"
objectstore "codeberg.org/lindenii/furgit/object/store"
objecttype "codeberg.org/lindenii/furgit/object/type"
)
// ensureLoaded completes one node's metadata load if it has not been loaded yet.
func (query *query) ensureLoaded(idx nodeIndex) error {
if query.nodes[idx].loaded {
return nil
}
if query.nodes[idx].hasGraphPos {
return query.loadByGraphPos(idx)
}
return query.loadByOID(idx)
}
// loadByOID populates one node from an object ID.
func (query *query) loadByOID(idx nodeIndex) error {
id := query.nodes[idx].id
if query.graph != nil {
pos, err := query.graph.Lookup(id)
if err != nil {
if _, ok := stderrors.AsType[*commitgraphread.NotFoundError](err); !ok {
return err
}
} else {
return query.loadCommitAtGraphPos(idx, pos)
}
}
ty, content, err := query.store.ReadBytesContent(id)
if err != nil {
if stderrors.Is(err, objectstore.ErrObjectNotFound) {
return &giterrors.ObjectMissingError{OID: id}
}
return err
}
if ty != objecttype.TypeCommit {
return &giterrors.ObjectTypeError{OID: id, Got: ty, Want: objecttype.TypeCommit}
}
commitObj, err := objectcommit.Parse(content, id.Algorithm())
if err != nil {
return err
}
parents := make([]parentRef, 0, len(commitObj.Parents))
for _, parentID := range commitObj.Parents {
parents = append(parents, parentRef{ID: parentID})
}
commit := commitData{
ID: id,
Parents: parents,
CommitTime: commitObj.Committer.WhenUnix,
}
return query.populateNode(idx, commit)
}
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