1 files changed, 117 insertions, 0 deletions
diff --git a/internal/admin/yaml_util.go b/internal/admin/yaml_util.go
new file mode 100644
index 0000000..b97a4f2
--- /dev/null
+++ b/internal/admin/yaml_util.go
@@ -0,0 +1,117 @@
+package admin
+
+import (
+	"bytes"
+	"log"
+	"os"
+	"path/filepath"
+
+	"gopkg.in/yaml.v3"
+)
+
+func readYAMLFile(dataDir, subdir, id string) ([]byte, string, error) {
+	path := filepath.Join(dataDir, subdir, id+".yaml")
+	data, err := os.ReadFile(path)
+	return data, path, err
+}
+
+func writeYAMLFile(path string, data any) ([]byte, error) {
+	var buf bytes.Buffer
+	enc := yaml.NewEncoder(&buf)
+	enc.SetIndent(2)
+	if err := enc.Encode(data); err != nil {
+		return nil, err
+	}
+	enc.Close()
+	content := buf.Bytes()
+	if err := os.WriteFile(path, content, 0644); err != nil {
+		return nil, err
+	}
+	return content, nil
+}
+
+func findYAMLFileInSubdirs(dataDir, subdir, id string) ([]byte, string, error) {
+	base := filepath.Join(dataDir, subdir)
+	entries, err := os.ReadDir(base)
+	if err != nil {
+		return nil, "", err
+	}
+	for _, e := range entries {
+		fullPath := filepath.Join(base, e.Name(), id+".yaml")
+		if data, err := os.ReadFile(fullPath); err == nil {
+			return data, fullPath, nil
+		}
+		subPath := filepath.Join(base, e.Name())
+		subEntries, err := os.ReadDir(subPath)
+		if err != nil {
+			continue
+		}
+		for _, se := range subEntries {
+			fullPath := filepath.Join(subPath, se.Name(), id+".yaml")
+			if data, err := os.ReadFile(fullPath); err == nil {
+				return data, fullPath, nil
+			}
+		}
+	}
+	return nil, "", os.ErrNotExist
+}
+
+func listYAMLFiles(dataDir, subdir string) ([]string, error) {
+	var ids []string
+	base := filepath.Join(dataDir, subdir)
+
+	entries, err := os.ReadDir(base)
+	if err != nil {
+		return nil, err
+	}
+	for _, e := range entries {
+		if !e.IsDir() && filepath.Ext(e.Name()) == ".yaml" {
+			ids = append(ids, e.Name()[:len(e.Name())-5])
+		}
+	}
+	for _, e := range entries {
+		if e.IsDir() {
+			subPath := filepath.Join(base, e.Name())
+			subEntries, err := os.ReadDir(subPath)
+			if err != nil {
+				continue
+			}
+			for _, se := range subEntries {
+				if !se.IsDir() && filepath.Ext(se.Name()) == ".yaml" {
+					ids = append(ids, se.Name()[:len(se.Name())-5])
+				}
+			}
+		}
+	}
+	return ids, nil
+}
+
+func listYAMLFilesDeep(dataDir, subdir string) ([]string, error) {
+	var ids []string
+	base := filepath.Join(dataDir, subdir)
+	err := filepath.WalkDir(base, func(path string, d os.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if !d.IsDir() && filepath.Ext(d.Name()) == ".yaml" {
+			rel, _ := filepath.Rel(base, path)
+			id := rel[:len(rel)-5]
+			ids = append(ids, id)
+		}
+		return nil
+	})
+	return ids, err
+}
+
+func backupFile(path string) []byte {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		log.Printf("backup: failed to read %s: %v", path, err)
+		return nil
+	}
+	return data
+}
+
+func snapshotFile(path string) ([]byte, error) {
+	return os.ReadFile(path)
+}