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package admin
import (
"bytes"
"fmt"
"log"
"os"
"path/filepath"
"strings"
"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)
rootPath := filepath.Join(base, id+".yaml")
if data, err := os.ReadFile(rootPath); err == nil {
return data, rootPath, nil
}
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
} else {
tree.Dirs[e.Name()] = []string{}
}
}
}
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
}
func createEntityDir(dataDir, subdir, name string) error {
name = strings.TrimSpace(name)
if name == "" || strings.ContainsAny(name, "/\\") || name == "." || name == ".." {
return fmt.Errorf("invalid directory name")
}
dirPath := filepath.Join(dataDir, subdir, name)
if _, err := os.Stat(dirPath); err == nil {
return fmt.Errorf("directory already exists")
}
return os.Mkdir(dirPath, 0755)
}
func renameEntityFile(dataDir, subdir, oldID, newID string) (string, string, []byte, error) {
oldPath, err := findEntityPath(dataDir, subdir, oldID)
if err != nil {
return "", "", nil, fmt.Errorf("entity not found: %s/%s", subdir, oldID)
}
dir := filepath.Dir(oldPath)
newPath := filepath.Join(dir, newID+".yaml")
if oldPath == newPath {
return "", "", nil, fmt.Errorf("new name is same as current")
}
if _, err := os.Stat(newPath); err == nil {
return "", "", nil, fmt.Errorf("entity %s already exists", newID)
}
data, err := os.ReadFile(oldPath)
if err != nil {
return "", "", nil, fmt.Errorf("read: %w", err)
}
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
}
func renameEntityDir(dataDir, subdir, oldName, newName string) error {
oldName = strings.TrimSpace(oldName)
newName = strings.TrimSpace(newName)
if oldName == "" || newName == "" || strings.ContainsAny(oldName, "/\\") || oldName == "." || oldName == ".." {
return fmt.Errorf("invalid old directory name")
}
if strings.ContainsAny(newName, "/\\") || newName == "." || newName == ".." {
return fmt.Errorf("invalid new directory name")
}
oldPath := filepath.Join(dataDir, subdir, oldName)
if _, err := os.Stat(oldPath); os.IsNotExist(err) {
return fmt.Errorf("directory %s does not exist", oldName)
}
newPath := filepath.Join(dataDir, subdir, newName)
if _, err := os.Stat(newPath); err == nil {
return fmt.Errorf("directory %s already exists", newName)
}
return os.Rename(oldPath, newPath)
}
func deleteEntityDir(dataDir, subdir, dir string) ([]ChangeDesc, error) {
dir = strings.TrimSpace(dir)
if dir == "" || strings.ContainsAny(dir, "/\\") || dir == "." || dir == ".." {
return nil, fmt.Errorf("invalid directory")
}
srcDir := filepath.Join(dataDir, subdir, dir)
entries, err := os.ReadDir(srcDir)
if err != nil {
return nil, fmt.Errorf("directory not found: %s", dir)
}
rootDir := filepath.Join(dataDir, subdir)
var clashes []string
for _, e := range entries {
if e.IsDir() || filepath.Ext(e.Name()) != ".yaml" {
continue
}
if _, err := os.Stat(filepath.Join(rootDir, e.Name())); err == nil {
clashes = append(clashes, e.Name())
}
}
if len(clashes) > 0 {
return nil, fmt.Errorf("files already exist in root: %s", strings.Join(clashes, ", "))
}
var changes []ChangeDesc
for _, e := range entries {
if e.IsDir() || filepath.Ext(e.Name()) != ".yaml" {
continue
}
oldPath := filepath.Join(srcDir, e.Name())
newPath := filepath.Join(rootDir, e.Name())
data, err := os.ReadFile(oldPath)
if err != nil {
return nil, fmt.Errorf("read %s: %w", e.Name(), err)
}
if err := os.WriteFile(newPath, data, 0644); err != nil {
return nil, fmt.Errorf("write %s: %w", e.Name(), err)
}
if err := os.Remove(oldPath); err != nil {
return nil, fmt.Errorf("remove %s: %w", e.Name(), err)
}
changes = append(changes, ChangeDesc{
Description: fmt.Sprintf("move %s %s to root", subdir, e.Name()),
FilePath: oldPath,
NewFilePath: newPath,
OldContent: data,
NewContent: data,
})
}
if err := os.Remove(srcDir); err != nil {
return nil, fmt.Errorf("remove directory: %w", err)
}
changes = append(changes, ChangeDesc{
Description: fmt.Sprintf("delete directory %s/%s", subdir, dir),
FilePath: srcDir,
IsDelete: true,
})
return changes, nil
}
|
