feat(files): support creating intermediate directories

2 files changed, 51 insertions, 12 deletions

diff --git a/pkg/files.go b/pkg/files.go
index 35420d4..379b437 100644
--- a/pkg/files.go
+++ b/pkg/files.go
@@ -8,6 +8,7 @@ import (
 	"io/fs"
 	"log/slog"
 	"os"
+	"path/filepath"
 )
 
 // ----- Globals ---------------------------------------------------------------
@@ -20,22 +21,24 @@ func init() {
 
 // ----- Public ----------------------------------------------------------------
 type FilePromise struct {
-	chain       []Promise
-	contents    Value
-	err         error
-	filename    Value
-	permissions *Permissions
-	status      Status
+	chain          []Promise
+	contents       Value
+	dirPermissions *Permissions
+	err            error
+	filename       Value
+	permissions    *Permissions
+	status         Status
 }
 
 func File(filename any) *FilePromise {
 	return &FilePromise{
-		chain:       nil,
-		contents:    nil,
-		err:         nil,
-		filename:    interfaceToTemplateValue(filename),
-		permissions: nil,
-		status:      PROMISED,
+		chain:          nil,
+		contents:       nil,
+		dirPermissions: nil,
+		err:            nil,
+		filename:       interfaceToTemplateValue(filename),
+		permissions:    nil,
+		status:         PROMISED,
 	}
 }
 
@@ -44,6 +47,11 @@ func (f *FilePromise) Contents(contents any) *FilePromise {
 	return f
 }
 
+func (f *FilePromise) DirectoriesPermissions(p *Permissions) *FilePromise {
+	f.dirPermissions = p
+	return f
+}
+
 func (f *FilePromise) Permissions(p *Permissions) *FilePromise {
 	f.permissions = p
 	return f
@@ -67,6 +75,11 @@ func (f *FilePromise) Promise() Promise {
 
 func (f *FilePromise) Resolve() {
 	filename := f.filename.String()
+	if f.dirPermissions != nil {
+		if f.status, f.err = makeDirectoriesHierarchy(filepath.Dir(filename), f.dirPermissions); f.err != nil {
+			return
+		}
+	}
 	if f.contents != nil {
 		var sumFile []byte
 		sumFile, f.err = sha256sumOfFile(filename)
diff --git a/pkg/utils.go b/pkg/utils.go
index f62d1c3..c3301f2 100644
--- a/pkg/utils.go
+++ b/pkg/utils.go
@@ -2,6 +2,10 @@ package gonf
 
 import (
 	"crypto/sha256"
+	"errors"
+	"io/fs"
+	"os"
+	"path/filepath"
 )
 
 var builtinTemplateFunctions = map[string]any{
@@ -20,6 +24,28 @@ func FilterSlice[T any](slice *[]T, predicate func(T) bool) {
 	*slice = (*slice)[:i] // or truncated out of the slice
 }
 
+// We cannot just use os.MakedirAll because we need to set the user:group on every intermediate directories created
+func makeDirectoriesHierarchy(dir string, perms *Permissions) (Status, error) {
+	if _, err := os.Lstat(dir); err != nil {
+		if errors.Is(err, fs.ErrNotExist) {
+			if status, err := makeDirectoriesHierarchy(filepath.Dir(dir), perms); err != nil {
+				return status, err
+			}
+			m, err := perms.mode.Int()
+			if err != nil {
+				return BROKEN, err
+			}
+			os.Mkdir(dir, fs.FileMode(m))
+			perms.resolve(dir)
+			return REPAIRED, nil
+		} else {
+			return BROKEN, err
+		}
+	} else {
+		return KEPT, nil
+	}
+}
+
 func sha256sum(contents []byte) []byte {
 	h := sha256.New()
 	h.Write(contents)