Handle subdirectories of emoji in copying, fetching and deleting. For #1916

core/data/emoji.go

@@ -11,25 +11,30 @@ import (
 	"github.com/owncast/owncast/models"
 	"github.com/owncast/owncast/static"
 	"github.com/owncast/owncast/utils"
+	"github.com/pkg/errors"
 	log "github.com/sirupsen/logrus"
 )
 
 // GetEmojiList returns a list of custom emoji from the emoji directory.
 func GetEmojiList() []models.CustomEmoji {
-	var emojiFS = os.DirFS(config.CustomEmojiPath)
+	emojiFS := os.DirFS(config.CustomEmojiPath)
 
 	emojiResponse := make([]models.CustomEmoji, 0)
 
-	files, err := fs.Glob(emojiFS, "*")
-	if err != nil {
-		log.Errorln(err)
-		return emojiResponse
+	walkFunction := func(path string, d os.DirEntry, err error) error {
+		if d.IsDir() {
+			return nil
+		}
+
+		emojiPath := filepath.Join(config.EmojiDir, path)
+		singleEmoji := models.CustomEmoji{Name: d.Name(), URL: emojiPath}
+		emojiResponse = append(emojiResponse, singleEmoji)
+		return nil
 	}
 
-	for _, name := range files {
-		emojiPath := filepath.Join(config.EmojiDir, name)
-		singleEmoji := models.CustomEmoji{Name: name, URL: emojiPath}
-		emojiResponse = append(emojiResponse, singleEmoji)
+	if err := fs.WalkDir(emojiFS, ".", walkFunction); err != nil {
+		log.Errorln("unable to fetch emojis: " + err.Error())
+		return emojiResponse
 	}
 
 	return emojiResponse
@@ -38,6 +43,11 @@ func GetEmojiList() []models.CustomEmoji {
 // SetupEmojiDirectory sets up the custom emoji directory by copying all built-in
 // emojis if the directory does not yet exist.
 func SetupEmojiDirectory() (err error) {
+	type emojiDirectory struct {
+		path  string
+		isDir bool
+	}
+
 	if utils.DoesFileExists(config.CustomEmojiPath) {
 		return nil
 	}
@@ -47,14 +57,42 @@ func SetupEmojiDirectory() (err error) {
 	}
 
 	staticFS := static.GetEmoji()
-	files, err := fs.Glob(staticFS, "*")
+	files := []emojiDirectory{}
+
+	walkFunction := func(path string, d os.DirEntry, err error) error {
+		if path == "." {
+			return nil
+		}
+
+		if d.Name() == "LICENSE.md" {
+			return nil
+		}
+
+		files = append(files, emojiDirectory{path: path, isDir: d.IsDir()})
+		return nil
+	}
+
+	if err := fs.WalkDir(staticFS, ".", walkFunction); err != nil {
+		log.Errorln("unable to fetch emojis: " + err.Error())
+		return errors.Wrap(err, "unable to fetch embedded emoji files")
+	}
+
 	if err != nil {
 		return fmt.Errorf("unable to read built-in emoji files: %w", err)
 	}
 
 	// Now copy all built-in emojis to the custom emoji directory
-	for _, name := range files {
-		emojiPath := filepath.Join(config.CustomEmojiPath, filepath.Base(name))
+	for _, path := range files {
+		emojiPath := filepath.Join(config.CustomEmojiPath, path.path)
+
+		if path.isDir {
+			if err := os.Mkdir(emojiPath, 0o700); err != nil {
+				return errors.Wrap(err, "unable to create emoji directory, check permissions?: "+path.path)
+			}
+			continue
+		}
+
+		memFile, err := staticFS.Open(path.path)
 
 		// nolint:gosec
 		diskFile, err := os.Create(emojiPath)
@@ -62,7 +100,6 @@ func SetupEmojiDirectory() (err error) {
 			return fmt.Errorf("unable to create custom emoji file on disk: %w", err)
 		}
 
-		memFile, err := staticFS.Open(name)
 		if err != nil {
 			_ = diskFile.Close()
 			return fmt.Errorf("unable to open built-in emoji file: %w", err)