第十阶段 stage 1（三）：钱包物品化、连接钱包、空投逐个授权、矿机收款地址

src/Decentralized.Domain/Scams.cs

@@ -13,6 +13,8 @@ namespace Decentralized.Domain
         public double Approve;
         public double Reward;
         public bool Scam, Claimed;
+        /// <summary>已为这个空投授权的钱包地址（签过授权合约）；空 = 还没授权。领取要用授权过的钱包。</summary>
+        public string AuthWallet;
     }
 
     /// <summary>钱包对某个合约的授权。钓鱼授权到 DrainDay 那晚把这种币转走，撤销后作废。</summary>
@@ -97,6 +99,17 @@ namespace Decentralized.Domain
             return s.Substring(0, k) + swaps[char.ToLowerInvariant(s[k])] + s.Substring(k + 1);
         }
 
+        /// <summary>这个钱包是否已为这个空投授权。</summary>
+        public static bool Authorized(Airdrop a, Wallet w) => a != null && w != null && !string.IsNullOrEmpty(a.AuthWallet) && ChainAddress.Same(a.AuthWallet, w.Address);
+
+        /// <summary>为空投授权钱包（签完授权合约后调用）；换了钱包要重新授权。</summary>
+        public static bool Authorize(Airdrop a, Wallet w, int day)
+        {
+            if (a == null || w == null || a.Claimed || day > a.Expire) return false;
+            a.AuthWallet = w.Address;
+            return true;
+        }
+
         /// <summary>领取：正规空投给奖励（干净的 CRC），钓鱼空投给一点点诱饵；有授权的记一条授权，钓鱼授权定下转走的那晚。</summary>
         public Approval Claim(Airdrop a, Wallet w, int day, Rng rng, out double got)
         {