fix: 종료된 유니크 경매 입찰시 버그

hwe/sammo/AuctionUniqueItem.php

@@ -129,6 +129,10 @@ class AuctionUniqueItem extends Auction
   public function bid(int $amount, bool $tryExtendCloseDate): ?string
   {
 
+    if($this->info->finished){
+      return '경매가 종료되었습니다.';
+    }
+
     $db = DB::db();
     /** @var AuctionInfo[] */
     $openUniqueAuctions = array_map(fn ($raw) => AuctionInfo::fromArray($raw), $db->query(
@@ -140,7 +144,9 @@ class AuctionUniqueItem extends Auction
     foreach ($openUniqueAuctions as $auction) {
       $auctionIDList[] = $auction->id;
     }
+
     $db = DB::db();
+    if($auctionIDList){
       $rawHighestBids = Util::convertArrayToDict($db->query(
         'SELECT bid.* FROM `ng_auction_bid` bid INNER JOIN (
           SELECT `auction_id`, MAX(`amount`) as `max_amount`
@@ -152,6 +158,11 @@ class AuctionUniqueItem extends Auction
         ON bid.`auction_id` = max_bid.`auction_id` AND bid.`amount` = max_bid.`max_amount`',
         $auctionIDList,
       ) ?? [], 'auction_id');
+    }
+    else{
+      $rawHighestBids = [];
+    }
+
     /** @var array<int,AuctionBidItem> */
     $highestBids = Util::mapWithKey(
       fn ($auctionID, $bid) => AuctionBidItem::fromArray($bid),