first commit

server/internal/backup/helpers.go

@@ -0,0 +1,41 @@
+package backup
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+func createTempArtifact(baseDir, taskName string, extension string) (string, string, error) {
+	tempDir, err := os.MkdirTemp(baseDir, "backupx-run-*")
+	if err != nil {
+		return "", "", fmt.Errorf("create temp dir: %w", err)
+	}
+	base := sanitizeFileName(taskName)
+	if base == "" {
+		base = "backup"
+	}
+	fileName := fmt.Sprintf("%s_%s.%s", base, time.Now().UTC().Format("20060102T150405"), strings.TrimPrefix(extension, "."))
+	return tempDir, filepath.Join(tempDir, fileName), nil
+}
+
+func sanitizeFileName(value string) string {
+	builder := strings.Builder{}
+	for _, char := range strings.TrimSpace(value) {
+		switch {
+		case char >= 'a' && char <= 'z':
+			builder.WriteRune(char)
+		case char >= 'A' && char <= 'Z':
+			builder.WriteRune(char + ('a' - 'A'))
+		case char >= '0' && char <= '9':
+			builder.WriteRune(char)
+		case char == '-' || char == '_':
+			builder.WriteRune(char)
+		case char == ' ' || char == '.':
+			builder.WriteRune('_')
+		}
+	}
+	return strings.Trim(builder.String(), "_")
+}