[+] Support setting favourite music

src/main/java/icu/samnyan/aqua/sega/maimai2/handler/UpsertUserAllHandler.kt

@@ -127,6 +127,18 @@ class UpsertUserAllHandler(
                 }.sortedBy { it.sortNumber })
         }
 
+        if(req.isNewFavoritemusicList.equals("0"))
+            // According to code, 0 here represents favourite differ and will send complete new list via userFavoritemusicList.
+            // Or userFavoritemusicList will be empty
+            req.userFavoritemusicList?.let { news ->
+                val key = "favorite_music"
+                val data = repos.userGeneralData.findByUserAndPropertyKey(u, key)()
+                    ?: Mai2UserGeneralData().apply { user = u; propertyKey = key }
+                repos.userGeneralData.save(data.apply {
+                    propertyValue = news.map { it.id }.joinToString(",")
+                })
+            }
+
         return SUCCESS
     }
 

src/main/java/icu/samnyan/aqua/sega/maimai2/model/request/data/UserAll.java

@@ -34,6 +34,7 @@ public class UserAll implements Serializable {
 	private List<Mai2UserFavorite> userFavoriteList;
 	private List<Mai2UserActivity> userActivityList;
 	private List<Map<String, Object>> userGamePlaylogList;
+	private List<UserFavoriteItem> userFavoritemusicList;
 	private String isNewCharacterList;
 	private String isNewMapList;
 	private String isNewLoginBonusList;
@@ -42,4 +43,5 @@ public class UserAll implements Serializable {
 	private String isNewCourseList;
 	private String isNewFavoriteList;
 	private String isNewFriendSeasonRankingList;
+	private String isNewFavoritemusicList;
 }

src/main/java/icu/samnyan/aqua/sega/maimai2/model/request/data/UserFavoriteItem.java

@@ -0,0 +1,15 @@
+package icu.samnyan.aqua.sega.maimai2.model.request.data;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class UserFavoriteItem implements Serializable {
+    private int orderId;
+    private int id;
+}