feat: Add actual git listing implementation

1 files changed, 82 insertions, 0 deletions

diff --git a/pkg/git/git.go b/pkg/git/git.go
new file mode 100644
index 0000000..85a3b95
--- /dev/null
+++ b/pkg/git/git.go
@@ -0,0 +1,82 @@
+package git
+
+import (
+	"errors"
+	"os"
+	"path"
+
+	"git.gabrielgio.me/cerrado/pkg/u"
+	"github.com/go-git/go-git/v5"
+	"github.com/go-git/go-git/v5/plumbing/object"
+)
+
+var (
+	ScanPathErr    = errors.New("Scan path does not exist")
+	RepoPathErr    = errors.New("Repository path does not exist")
+	missingHeadErr = errors.New("Head not found")
+)
+
+type (
+	GitServerRepository struct {
+		scanPath string
+	}
+
+	GitRepository struct {
+		path string
+	}
+)
+
+func NewGitServerRepository(scanPath string) *GitServerRepository {
+	return &GitServerRepository{scanPath}
+}
+
+func NewGitRepository(dir string) *GitRepository {
+	return &GitRepository{
+		path: dir,
+	}
+}
+
+func (g *GitServerRepository) List() ([]*GitRepository, error) {
+	if !u.FileExist(g.scanPath) {
+		return nil, ScanPathErr
+	}
+
+	entries, err := os.ReadDir(g.scanPath)
+	if err != nil {
+		return nil, err
+	}
+
+	repos := make([]*GitRepository, 0)
+	for _, e := range entries {
+		if !e.IsDir() {
+			continue
+		}
+
+		fullPath := path.Join(g.scanPath, e.Name())
+		repos = append(repos, NewGitRepository(fullPath))
+	}
+
+	return repos, nil
+}
+
+func (g *GitRepository) Path() string {
+	return g.path
+}
+
+func (g *GitRepository) LastCommit() (*object.Commit, error) {
+	repo, err := git.PlainOpen(g.path)
+	if err != nil {
+		return nil, err
+	}
+
+	ref, err := repo.Head()
+	if err != nil {
+		return nil, errors.Join(missingHeadErr, err)
+	}
+
+	c, err := repo.CommitObject(ref.Hash())
+	if err != nil {
+		return nil, err
+	}
+	return c, nil
+}