fix: cleaning up the cache folder caused permission issues

common/os.go

@@ -1,31 +1,11 @@
 package common
 
 import (
-	"errors"
 	"os"
 	"path/filepath"
 	"time"
 )
 
-// 创建文件, 自动创建目录
-func MkFile(path string, data []byte) error {
-	err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
-	if err != nil {
-		return err
-	}
-	return os.WriteFile(path, data, os.ModePerm)
-}
-
-// 删除文件, 并清理空目录. 如果文件不存在则返回 nil
-func PurgeFile(path string) error {
-	if err := os.Remove(path); err != nil {
-		if !errors.Is(err, os.ErrNotExist) {
-			return err
-		}
-	}
-	return RemoveEmptyDirectories(filepath.Dir(path))
-}
-
 func RmFileAfter(path string, td time.Duration) {
 	_, err := os.Stat(path)
 	if err != nil {
@@ -34,22 +14,23 @@ func RmFileAfter(path string, td time.Duration) {
 	}
 	Log.Debugf("Remove file after %s: %s", td, path)
 	time.AfterFunc(td, func() {
-		PurgeFile(path)
+		if err := os.Remove(path); err != nil {
+			Log.Errorf("Failed to remove file %s: %s", path, err)
+		}
 	})
 }
 
-// 递归删除空目录
-func RemoveEmptyDirectories(dirPath string) error {
+// 删除目录下的所有内容, 但不删除目录本身
+func RemoveAllInDir(dirPath string) error {
 	entries, err := os.ReadDir(dirPath)
 	if err != nil {
 		return err
 	}
-	if len(entries) == 0 {
-		err := os.Remove(dirPath)
-		if err != nil {
+	for _, entry := range entries {
+		entryPath := filepath.Join(dirPath, entry.Name())
+		if err := os.RemoveAll(entryPath); err != nil {
 			return err
 		}
-		return RemoveEmptyDirectories(filepath.Dir(dirPath))
 	}
 	return nil
 }