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package commitquery
import (
stderrors "errors"
giterrors "codeberg.org/lindenii/furgit/errors"
commitgraphread "codeberg.org/lindenii/furgit/commitgraph/read"
"codeberg.org/lindenii/furgit/object"
"codeberg.org/lindenii/furgit/objectid"
"codeberg.org/lindenii/furgit/objectstore"
"codeberg.org/lindenii/furgit/objecttype"
)
// ID returns the canonical object ID of one internal node.
func (ctx *Context) ID(idx NodeIndex) objectid.ObjectID {
return ctx.nodes[idx].id
}
// CommitTime returns the committer timestamp used for one internal node.
func (ctx *Context) CommitTime(idx NodeIndex) int64 {
return ctx.nodes[idx].commitTime
}
// ResolveOID resolves one commit object ID to one internal query node.
func (ctx *Context) ResolveOID(id objectid.ObjectID) (NodeIndex, error) {
idx, ok := ctx.byOID[id]
if ok {
err := ctx.ensureLoaded(idx)
if err != nil {
return 0, err
}
return idx, nil
}
idx = ctx.newNode(id)
ctx.byOID[id] = idx
err := ctx.loadByOID(idx)
if err != nil {
delete(ctx.byOID, id)
return 0, err
}
return idx, nil
}
// loadByOID populates one node from an object ID.
func (ctx *Context) loadByOID(idx NodeIndex) error {
id := ctx.nodes[idx].id
if ctx.graph != nil {
pos, err := ctx.graph.Lookup(id)
if err != nil {
if _, ok := stderrors.AsType[*commitgraphread.NotFoundError](err); !ok {
return err
}
} else {
return ctx.loadCommitAtGraphPos(idx, pos)
}
}
ty, content, err := ctx.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 := object.ParseCommit(content, id.Algorithm())
if err != nil {
return err
}
parents := make([]Parent, 0, len(commitObj.Parents))
for _, parentID := range commitObj.Parents {
parents = append(parents, Parent{ID: parentID})
}
commit := Commit{
ID: id,
Parents: parents,
CommitTime: commitObj.Committer.WhenUnix,
}
return ctx.populateNode(idx, commit)
}
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