From 57dc685c5dbc7a0fa8f9447b5b9527938ed4e4a2 Mon Sep 17 00:00:00 2001
From: justuser-31 <kirillmoscow2@gmail.com>
Date: Sun, 30 Nov 2025 16:01:36 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9C=D0=B5=D0=BB=D0=BA=D0=B8=D0=B5=20=D0=B4?=
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---
 src/main/kotlin/main/VpcSpigotIntegration/SignHandler.kt | 9 +++++++--
 .../main/VpcSpigotIntegration/VpcServerIntegration.kt    | 2 ++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/main/kotlin/main/VpcSpigotIntegration/SignHandler.kt b/src/main/kotlin/main/VpcSpigotIntegration/SignHandler.kt
index 684b651..cc56e89 100644
--- a/src/main/kotlin/main/VpcSpigotIntegration/SignHandler.kt
+++ b/src/main/kotlin/main/VpcSpigotIntegration/SignHandler.kt
@@ -94,7 +94,12 @@ class SignHandler: Listener {
         LOGGER.info("Container block: $cordX $cordY $cordZ")
 
         val container: Chest = containerBlock.state as Chest
-        val firstItem = container.blockInventory.contents[0]
+        LOGGER.info("Content: ${container.blockInventory.contents}")
+        var firstItem = container.blockInventory.contents.filterNotNull().firstOrNull()
+        if (firstItem == null) {
+            Utils.send(event.player,"&cВ контейнере нет предметов для покупки.")
+        }
+        firstItem = firstItem as ItemStack
         LOGGER.info("firstItem: ${firstItem.type} | amount: ${firstItem.amount}")
 
         // Get info
@@ -150,7 +155,7 @@ class SignHandler: Listener {
 
             var coloredLine: String
             // Check if some data is missing
-            if (vpcUsername.isEmpty() || cost == null || amount == null) {
+            if (vpcUsername.isEmpty() || cost == null || amount == null || amount < 0 || cost < 0) {
                 coloredLine = ChatColor.translateAlternateColorCodes('&', "$PREFIX&cError")
                 event.setLine(0, coloredLine)
                 return
diff --git a/src/main/kotlin/main/VpcSpigotIntegration/VpcServerIntegration.kt b/src/main/kotlin/main/VpcSpigotIntegration/VpcServerIntegration.kt
index 67eec6f..2368b0c 100644
--- a/src/main/kotlin/main/VpcSpigotIntegration/VpcServerIntegration.kt
+++ b/src/main/kotlin/main/VpcSpigotIntegration/VpcServerIntegration.kt
@@ -712,10 +712,12 @@ pay_by_sign=${DEFAULT_PAY_BY_SIGN}
 								val availableAmount = paymentInfo.container.inventory.all(type).values.sumOf { it.amount }
 								if (availableAmount < paymentInfo.amount) {
 									LOGGER.error("Not enough items after pay invoice, try to return VPC...")
+                                    Utils.send(paymentInfo.player, "&cВ контейнере недостаточно предметов, попытка вернуть VPC...")
                                     val vpcUsername = DataManager.getPlayerVPCUsername(paymentInfo.player.name).toString()
                                     val transferResult = VpcApi.transfer_coins(vpcUsername, paymentInfo.cost).toString()
                                     if (transferResult != "OK") {
                                         LOGGER.error("Can't return VPC, result: $transferResult")
+                                        Utils.send(paymentInfo.player, "&cНевозможно вернуть VPC, обратитесь к администратору: $transferResult")
                                     }
 								} else {
 									// If we have needed items