chore: improve some command

src/main/kotlin/cn/rtast/fancybot/items/BaisiItem.kt

@@ -20,10 +20,7 @@ class BaisiItem : Item() {
 
     override suspend fun redeemInGroup(listener: OneBotListener, message: GroupMessage, after: Double) {
         val url = Http.get<Baisi>("https://v2.api-m.com/api/baisi").data
-        val msg = MessageChain.Builder()
-            .addAt(message.sender.userId)
-            .addImage(url)
-            .build()
-        listener.sendGroupMessage(message.groupId, msg)
+        val msg = MessageChain.Builder().addImage(url).build()
+        message.reply(msg)
     }
 }

src/main/kotlin/cn/rtast/fancybot/items/HeisiItem.kt

@@ -20,10 +20,7 @@ class HeisiItem : Item() {
 
     override suspend fun redeemInGroup(listener: OneBotListener, message: GroupMessage, after: Double) {
         val url = Http.get<Baisi>("https://v2.api-m.com/api/heisi").data
-        val msg = MessageChain.Builder()
-            .addAt(message.sender.userId)
-            .addImage(url)
-            .build()
-        listener.sendGroupMessage(message.groupId, msg)
+        val msg = MessageChain.Builder().addImage(url).build()
+        message.reply(msg)
     }
 }

src/main/kotlin/cn/rtast/fancybot/items/NiuziItem.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright © 2024 RTAkland
+ * Author: RTAkland
+ * Date: 2024/9/27
+ */
+
+
+package cn.rtast.fancybot.items
+
+import cn.rtast.fancybot.niuziManager
+import cn.rtast.fancybot.util.item.Item
+import cn.rtast.rob.entity.GroupMessage
+import cn.rtast.rob.util.ob.MessageChain
+import cn.rtast.rob.util.ob.OneBotListener
+
+class NiuziItem : Item() {
+    override val itemNames = listOf("牛子", "nz", "niuzi")
+    override val itemPrice = 10.0
+
+    override suspend fun redeemInGroup(listener: OneBotListener, message: GroupMessage, after: Double) {
+        val before = niuziManager.getUser(message.sender.userId)!!
+        val afterNiuzi = niuziManager.updateLength(message.sender.userId, -2.0)!!
+        val msg = MessageChain.Builder()
+            .addText("你的牛子到账啦, 你的牛子现在有${afterNiuzi.length}cm长呢!")
+            .addNewLine()
+            .addText("(之前的长度是${before.length}cm!)")
+            .build()
+        message.reply(msg)
+    }
+}

src/main/kotlin/cn/rtast/fancybot/items/SetuItem.kt

@@ -31,10 +31,7 @@ class SetuItem : Item() {
             return
         }
         val imageBase64 = URI(response.urls.large).toURL().readBytes().encodeToBase64()
-        val msg = MessageChain.Builder()
-            .addAt(message.sender.userId)
-            .addImage(imageBase64, true)
-            .build()
-        listener.sendGroupMessage(message.groupId, msg)
+        val msg = MessageChain.Builder().addImage(imageBase64, true).build()
+        message.reply(msg)
     }
 }