// Copyright 2025 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package gitrepo

import (
	"os"
	"path/filepath"
)

const notRegularFileMode = os.ModeSymlink | os.ModeNamedPipe | os.ModeSocket | os.ModeDevice | os.ModeCharDevice | os.ModeIrregular

// CalcRepositorySize returns the disk consumption for a given path
func CalcRepositorySize(repo Repository) (int64, error) {
	var size int64
	err := filepath.WalkDir(repoPath(repo), func(_ string, entry os.DirEntry, err error) error {
		if os.IsNotExist(err) { // ignore the error because some files (like temp/lock file) may be deleted during traversing.
			return nil
		} else if err != nil {
			return err
		}
		if entry.IsDir() {
			return nil
		}
		info, err := entry.Info()
		if os.IsNotExist(err) { // ignore the error as above
			return nil
		} else if err != nil {
			return err
		}
		if (info.Mode() & notRegularFileMode) == 0 {
			size += info.Size()
		}
		return nil
	})
	return size, err
}
