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package repository
import (
"fmt"
"os"
"codeberg.org/lindenii/furgit/commitquery"
"codeberg.org/lindenii/furgit/object/fetch"
reffiles "codeberg.org/lindenii/furgit/ref/store/files"
)
// Open opens a repository and wires its stores and helpers from the on-disk
// repository format.
//
// root must refer to the Git directory itself:
// a bare repository root or a non-bare ".git" directory.
//
// Labels: Deps-Borrowed.
func Open(root *os.Root) (repo *Repository, err error) {
repo = &Repository{}
defer func() {
if err != nil {
_ = repo.Close()
}
}()
cfg, err := parseRepositoryConfig(root)
if err != nil {
return nil, err
}
repo.config = cfg
algo, err := detectObjectAlgorithm(cfg)
if err != nil {
return nil, err
}
repo.algo = algo
objects, objectsRoot, objectsPackRoot, objectsLoose, objectsPacked, err := openObjectStore(root, algo)
if err != nil {
return nil, err
}
repo.objects = objects
repo.fetcher = fetch.New(objects)
repo.objectsRoot = objectsRoot
repo.objectsPackRoot = objectsPackRoot
repo.objectsLoose = objectsLoose
repo.objectsPacked = objectsPacked
commitGraph, err := openCommitGraph(objectsRoot, algo)
if err != nil {
return nil, err
}
repo.commitGraph = commitGraph
repo.commitQueries = commitquery.New(repo.fetcher, commitGraph)
refRoot, err := root.OpenRoot(".")
if err != nil {
return nil, fmt.Errorf("repository: open root for refs: %w", err)
}
refs, err := reffiles.New(refRoot, algo, detectPackedRefsTimeout(cfg))
if err != nil {
_ = refRoot.Close()
return nil, err
}
repo.refs = refs
repo.refRoot = refRoot
return repo, nil
}
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