From a65f56fa263c34a1a203553dbe4fc8f8b7b3a30e Mon Sep 17 00:00:00 2001
From: armv9 <48624112+arm64v8a@users.noreply.github.com>
Date: Wed, 11 Dec 2024 20:29:23 +0900
Subject: [PATCH] feat: prepend & append

---
 app/src/main/java/moe/matsuri/nb4a/utils/Util.kt | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/app/src/main/java/moe/matsuri/nb4a/utils/Util.kt b/app/src/main/java/moe/matsuri/nb4a/utils/Util.kt
index 1f8f1073..ef695f7c 100644
--- a/app/src/main/java/moe/matsuri/nb4a/utils/Util.kt
+++ b/app/src/main/java/moe/matsuri/nb4a/utils/Util.kt
@@ -122,6 +122,20 @@ object Util {
                 val currentMap = (to[k] as Map<*, *>).toMutableMap()
                 currentMap += v
                 to[k] = currentMap
+            } else if (v is List<*>) {
+                if (k.startsWith("+")) {  // prepend
+                    val dstKey = k.removePrefix("+")
+                    var currentList = (to[dstKey] as List<*>).toMutableList()
+                    currentList = (v + currentList).toMutableList()
+                    to[dstKey] = currentList
+                } else if (k.endsWith("+")) {  // append
+                    val dstKey = k.removeSuffix("+")
+                    var currentList = (to[dstKey] as List<*>).toMutableList()
+                    currentList = (currentList + v).toMutableList()
+                    to[dstKey] = currentList
+                } else {
+                    to[k] = v
+                }
             } else {
                 to[k] = v
             }