add: some console.debug() with reason for each rejection

pages/api/request.ts

@@ -42,20 +42,26 @@ export default async function handler(
   const firstForwardedForIp = forwardedForValues[0] || null;
   const remoteAddress = req.socket.remoteAddress || null;
 
-  if (!remoteAddress) {
+  const ipAddress = firstForwardedForIp || remoteAddress;
+  const walletAddress = req.body.walletAddress;
+  const amount = req.body.amount;
+
+  if (!ipAddress) {
+    console.debug(
+      `Rejected request for ${amount} SOL to wallet '${walletAddress}' due to remote address missing. Likely a disconnect.`
+    );
     return res
       .status(BAD_REQUEST)
       .json({ error: "Remote address has disconnected" });
   }
 
-  const ipAddress = firstForwardedForIp || remoteAddress;
-  const walletAddress = req.body.walletAddress;
-  const amount = req.body.amount;
-
   try {
     validate(walletAddress, amount);
   } catch (thrownObject) {
     const error = thrownObject as Error;
+    console.debug(
+      `Rejected request for ${amount} SOL to wallet '${walletAddress}' at IP address '${ipAddress}' due to validation failure: ${error.message}`
+    );
     return res.status(BAD_REQUEST).json({ error: error.message });
   }
 
@@ -64,6 +70,9 @@ export default async function handler(
   const isCloudflareApproved = await checkCloudflare(cloudflareCallback);
 
   if (!isCloudflareApproved) {
+    console.debug(
+      `Rejected request for ${amount} SOL to wallet '${walletAddress}' at IP address '${ipAddress}' for failing CAPTCHA`
+    );
     return res.status(BAD_REQUEST).json({ error: "Invalid CAPTCHA" });
   }
 
@@ -85,6 +94,9 @@ export default async function handler(
     // An error here means the wallet has exceeded the limit
     // We'll throw an error unless they're on the allow list
     if (!isAllowListed) {
+      console.debug(
+        `Rejected ${amount} SOL to wallet '${walletAddress}' at IP address '${ipAddress}' due to ${error.message}`
+      );
       return res.status(TOO_MANY_REQUESTS).json({ error: error.message });
     }
 
@@ -113,7 +125,7 @@ export default async function handler(
       .json({ error: "Faucet is empty, ping @solana_devs on Twitter" });
   }
 
-  console.log(
+  console.debug(
     `Airdropped ${amount} SOL to wallet '${walletAddress}' at IP address '${ipAddress}'`
   );
   return res.status(OK).json({ success: true, message: "Airdrop successful" });