Support a custom emoji override directory. Closes #1967

controllers/emoji.go

@@ -4,23 +4,31 @@ import (
 	"encoding/json"
 	"io/fs"
 	"net/http"
+	"os"
 	"path/filepath"
 	"strings"
 
 	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/models"
 	"github.com/owncast/owncast/static"
+	"github.com/owncast/owncast/utils"
 	log "github.com/sirupsen/logrus"
 )
 
-var emojiStaticServer = http.FileServer(http.FS(static.GetEmoji()))
+var useCustomEmojiDirectory = utils.DoesFileExists(config.CustomEmojiPath)
 
 // getCustomEmojiList returns a list of custom emoji either from the cache or from the emoji directory.
 func getCustomEmojiList() []models.CustomEmoji {
-	bundledEmoji := static.GetEmoji()
+	var emojiFS fs.FS
+	if useCustomEmojiDirectory {
+		emojiFS = os.DirFS(config.CustomEmojiPath)
+	} else {
+		emojiFS = static.GetEmoji()
+	}
+
 	emojiResponse := make([]models.CustomEmoji, 0)
 
-	files, err := fs.Glob(bundledEmoji, "*")
+	files, err := fs.Glob(emojiFS, "*")
 	if err != nil {
 		log.Errorln(err)
 		return emojiResponse
@@ -48,5 +56,14 @@ func GetCustomEmojiList(w http.ResponseWriter, r *http.Request) {
 func GetCustomEmojiImage(w http.ResponseWriter, r *http.Request) {
 	path := strings.TrimPrefix(r.URL.Path, "/img/emoji/")
 	r.URL.Path = path
+
+	var emojiStaticServer http.Handler
+	if useCustomEmojiDirectory {
+		emojiFS := os.DirFS(config.CustomEmojiPath)
+		emojiStaticServer = http.FileServer(http.FS(emojiFS))
+	} else {
+		emojiStaticServer = http.FileServer(http.FS(static.GetEmoji()))
+	}
+
 	emojiStaticServer.ServeHTTP(w, r)
 }