清理复杂的流程

pkg/core/backend.go

@@ -7,17 +7,14 @@ import (
 	"time"
 )
 
-type BranchInfo struct {
+type Metadata struct {
 	ID           string    `json:"id"`
 	LastModified time.Time `json:"last_modified"`
 }
 
 type Backend interface {
 	io.Closer
-	// Repos return repo name + default branch
-	Repos(ctx context.Context, owner string) (map[string]string, error)
-	// Branches return branch + commit id
-	Branches(ctx context.Context, owner, repo string) (map[string]*BranchInfo, error)
+	Meta(ctx context.Context, owner, repo string) (*Metadata, error)
 	// Open return file or error (error)
-	Open(ctx context.Context, owner, repo, commit, path string, headers http.Header) (*http.Response, error)
+	Open(ctx context.Context, owner, repo, id, path string, headers http.Header) (*http.Response, error)
 }