emoji: Add EmojiStore.getUnicodeEmojiNameByCode method

Author: sm-sayedi

lib/model/emoji.dart

@@ -119,6 +119,8 @@ mixin EmojiStore {
 
   Iterable<EmojiCandidate> allEmojiCandidates();
 
+  String? getUnicodeEmojiNameByCode(String emojiCode);
+
   // TODO cut debugServerEmojiData once we can query for lists of emoji;
   //   have tests make those queries end-to-end
   Map<String, List<String>>? get debugServerEmojiData;
@@ -144,6 +146,10 @@ mixin ProxyEmojiStore on EmojiStore {
   @override
   Iterable<EmojiCandidate> allEmojiCandidates() => emojiStore.allEmojiCandidates();
 
+  @override
+  String? getUnicodeEmojiNameByCode(String emojiCode) =>
+    emojiStore.getUnicodeEmojiNameByCode(emojiCode);
+
   @override
   Map<String, List<String>>? get debugServerEmojiData => emojiStore.debugServerEmojiData;
 }
@@ -396,6 +402,10 @@ class EmojiStoreImpl extends PerAccountStoreBase with EmojiStore {
     return _allEmojiCandidates ??= _generateAllCandidates();
   }
 
+  @override
+  String? getUnicodeEmojiNameByCode(String emojiCode) =>
+    _serverEmojiData?[emojiCode]?.first;
+
   void setServerEmojiData(ServerEmojiData data) {
     _serverEmojiData = data.codeToNames;
     _popularCandidates = null;