改进 扣费机制，优先补充 Drops

app/Models/Host.php

@@ -78,11 +78,10 @@ public function scopeThisUser($query, $module = null)
     // cost
     public function cost($price = null)
     {
+        $price = abs($price);
 
         $this->load('user');
 
-        $price = abs($price);
-
         $cache_key = 'user_drops_' . $this->user_id;
 
         $drops = Cache::get($cache_key);
@@ -116,6 +115,8 @@ public function cost($price = null)
             ]);
         }
 
+        $this->price = abs($this->price);
+
         Cache::decrement($cache_key, $this->price);
 
         return true;

app/Models/User.php

@@ -51,10 +51,19 @@ class User extends Authenticatable
     public function toDrops($amount = 1)
     {
         $rate = Cache::get('drops_rate', 100);
-        $total = $amount * $rate;
-
         $cache_key = 'user_drops_' . $this->id;
 
+        $drops = Cache::get($cache_key, 0);
+
+        $total = 0;
+
+        if ($drops < 0) {
+            $amount += abs($drops) / $rate;
+        }
+
+        $total += $amount * $rate;
+
+
         $lock = Cache::lock("lock_" . $cache_key, 5);
         try {
             $lock->block(5);