1 files changed, 71 insertions, 0 deletions
diff --git a/internal/cli/description_sync.go b/internal/cli/description_sync.go
index 4904b56..317bcdf 100644
--- a/internal/cli/description_sync.go
+++ b/internal/cli/description_sync.go
@@ -2,6 +2,10 @@ package cli
 
 import (
 	"fmt"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
 	"strings"
 
 	"codeberg.org/snonux/gitsyncer/internal/codeberg"
@@ -105,8 +109,75 @@ func syncRepoDescriptions(cfg *config.Config, dryRun bool, repoName, knownCBDesc
 		}
 	}
 
+	syncBackupDescriptions(cfg, dryRun, repoName, canonical)
+
 	// Update cache
 	if cache != nil {
 		cache[repoName] = canonical
 	}
 }
+
+func syncBackupDescriptions(cfg *config.Config, dryRun bool, repoName, canonical string) {
+	if cfg == nil || canonical == "" {
+		return
+	}
+
+	for i := range cfg.Organizations {
+		org := &cfg.Organizations[i]
+		if !org.BackupLocation {
+			continue
+		}
+
+		supported, err := syncBackupDescription(org, repoName, canonical, dryRun)
+		if err != nil {
+			fmt.Printf("  Warning: Failed to update backup description on %s: %v\n", org.Host, err)
+			continue
+		}
+		if supported && !dryRun {
+			fmt.Printf("  Updated backup description for %s on %s\n", repoName, org.Host)
+		}
+	}
+}
+
+func syncBackupDescription(org *config.Organization, repoName, description string, dryRun bool) (bool, error) {
+	if org == nil || !org.BackupLocation {
+		return false, nil
+	}
+
+	description = strings.TrimSpace(description)
+	if description == "" {
+		return false, nil
+	}
+
+	if strings.HasPrefix(org.Host, "file://") {
+		descriptionPath := filepath.Join(strings.TrimPrefix(org.Host, "file://"), repoName+".git", "description")
+		if dryRun {
+			fmt.Printf("  [DRY RUN] Would update backup description for %s on %s -> %q\n", repoName, org.Host, description)
+			return true, nil
+		}
+		return true, os.WriteFile(descriptionPath, []byte(description+"\n"), 0644)
+	}
+
+	if strings.TrimSpace(org.DescriptionSyncHost) == "" || strings.TrimSpace(org.DescriptionSyncRoot) == "" {
+		return false, nil
+	}
+
+	descriptionPath := path.Join(org.DescriptionSyncRoot, repoName+".git", "description")
+	if dryRun {
+		fmt.Printf("  [DRY RUN] Would update backup description for %s on %s -> %q\n", repoName, org.Host, description)
+		return true, nil
+	}
+
+	cmd := exec.Command("ssh", org.DescriptionSyncHost, fmt.Sprintf("cat > %s", shellSingleQuote(descriptionPath)))
+	cmd.Stdin = strings.NewReader(description + "\n")
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		return true, fmt.Errorf("ssh write failed: %w\n%s", err, strings.TrimSpace(string(output)))
+	}
+
+	return true, nil
+}
+
+func shellSingleQuote(value string) string {
+	return "'" + strings.ReplaceAll(value, "'", `'\''`) + "'"
+}