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package admin
import (
"bytes"
"fmt"
"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
}
type YAMLTree struct {
Root []string `json:"root"`
Dirs map[string][]string `json:"dirs"`
}
func listYAMLTree(dataDir, subdir string) (*YAMLTree, error) {
tree := &YAMLTree{Root: []string{}, Dirs: map[string][]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" {
tree.Root = append(tree.Root, 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
}
var ids []string
for _, se := range subEntries {
if !se.IsDir() && filepath.Ext(se.Name()) == ".yaml" {
ids = append(ids, se.Name()[:len(se.Name())-5])
}
}
if len(ids) > 0 {
tree.Dirs[e.Name()] = ids
}
}
}
return tree, 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: WARNING failed to read %s: %v (undo will not be able to restore this file)", path, err)
return nil
}
return data
}
func snapshotFile(path string) ([]byte, error) {
return os.ReadFile(path)
}
func findEntityPath(dataDir, subdir, id string) (string, error) {
_, path, err := readYAMLFile(dataDir, subdir, id)
if err == nil {
return path, nil
}
_, path, err = findYAMLFileInSubdirs(dataDir, subdir, id)
return path, err
}
func moveEntityFile(dataDir, subdir, id, targetDir string) (string, string, []byte, error) {
oldPath, err := findEntityPath(dataDir, subdir, id)
if err != nil {
return "", "", nil, fmt.Errorf("entity not found: %s/%s", subdir, id)
}
data, err := os.ReadFile(oldPath)
if err != nil {
return "", "", nil, fmt.Errorf("read: %w", err)
}
var newPath string
if targetDir == "" {
newPath = filepath.Join(dataDir, subdir, id+".yaml")
} else {
destDir := filepath.Join(dataDir, subdir, targetDir)
if _, err := os.Stat(destDir); os.IsNotExist(err) {
return "", "", nil, fmt.Errorf("directory does not exist: %s", targetDir)
}
newPath = filepath.Join(destDir, id+".yaml")
}
if oldPath == newPath {
return "", "", nil, fmt.Errorf("already in target directory")
}
if _, err := os.Stat(newPath); err == nil {
return "", "", nil, fmt.Errorf("entity already exists in target directory")
}
if err := os.WriteFile(newPath, data, 0644); err != nil {
return "", "", nil, fmt.Errorf("write: %w", err)
}
if err := os.Remove(oldPath); err != nil {
return "", "", nil, fmt.Errorf("remove old: %w", err)
}
return oldPath, newPath, data, nil
}
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