feat: backup and restore

internal/backup/utils.go

@@ -0,0 +1,85 @@
+package backup
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+
+	"github.com/uozi-tech/cosy"
+)
+
+// copyFile copies a file from src to dst
+func copyFile(src, dst string) error {
+	// Open source file
+	source, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer source.Close()
+
+	// Create destination file
+	destination, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer destination.Close()
+
+	// Copy content
+	_, err = io.Copy(destination, source)
+	return err
+}
+
+// copyDirectory copies a directory recursively from src to dst
+func copyDirectory(src, dst string) error {
+	// Check if source is a directory
+	srcInfo, err := os.Stat(src)
+	if err != nil {
+		return err
+	}
+	if !srcInfo.IsDir() {
+		return cosy.WrapErrorWithParams(ErrCopyNginxConfigDir, "%s is not a directory", src)
+	}
+
+	// Create destination directory
+	if err := os.MkdirAll(dst, srcInfo.Mode()); err != nil {
+		return err
+	}
+
+	// Walk through source directory
+	return filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		// Calculate relative path
+		relPath, err := filepath.Rel(src, path)
+		if err != nil {
+			return err
+		}
+		if relPath == "." {
+			return nil
+		}
+
+		// Create target path
+		targetPath := filepath.Join(dst, relPath)
+
+		// Check if it's a symlink
+		if info.Mode()&os.ModeSymlink != 0 {
+			// Read the link
+			linkTarget, err := os.Readlink(path)
+			if err != nil {
+				return err
+			}
+			// Create symlink at target path
+			return os.Symlink(linkTarget, targetPath)
+		}
+
+		// If it's a directory, create it
+		if info.IsDir() {
+			return os.MkdirAll(targetPath, info.Mode())
+		}
+
+		// If it's a file, copy it
+		return copyFile(path, targetPath)
+	})
+}