feat: use rules json for gas-sponsorship

apps/api/src/routes/gas-sponsorship.ts

@@ -10,8 +10,59 @@ import {
 } from "../schema/gas-sponsorship";
 import type { TdkApiContext } from "../types";
 
-// TODO: Replace with actual sponsored partner IDs or logic to fetch them from another service like TMC
-const fullySponsoredPatnerIds = new Set(["zeeverse", "smols"]);
+// TODO: tweak data here based on final resolutions.
+// TODO: move this to the DB so it can be updated without code changes (through some sort of dashboard)
+const sponsorshipRules = {
+  partner: {
+    fullySponsoredIds: ["zeeverse", "smols"],
+  },
+  user: {
+    maxTransactionsPerMonth: 100,
+    maxGasPerMonth: 0,
+  },
+};
+
+const validateRules = ({
+  partnerId,
+  monthlyTransactions,
+  monthlyGas,
+}: {
+  partnerId: string;
+  monthlyTransactions: number;
+  monthlyGas: number;
+}) => {
+  const { partner, user } = sponsorshipRules;
+
+  const isPartnerFullySponsored = partner.fullySponsoredIds.includes(partnerId);
+  const hasExceededTransactions =
+    monthlyTransactions > user.maxTransactionsPerMonth;
+  const hasExceededGas = monthlyGas > user.maxGasPerMonth;
+
+  let reason = "does not meet the criteria";
+
+  switch (true) {
+    case isPartnerFullySponsored:
+      reason = "partner is fully sponsored";
+      break;
+    case hasExceededTransactions:
+      reason = "exceeded the maximum number of transactions per month";
+      break;
+    case hasExceededGas:
+      reason = "exceeded the maximum gas per month";
+      break;
+
+    default:
+      break;
+  }
+
+  const isAllowed =
+    isPartnerFullySponsored || !hasExceededTransactions || !hasExceededGas;
+
+  return {
+    isAllowed,
+    reason,
+  };
+};
 
 export const gasSponsorshipRoutes =
   ({ db }: TdkApiContext): FastifyPluginAsync =>
@@ -33,37 +84,22 @@ export const gasSponsorshipRoutes =
       async (req, reply) => {
         const { body, params } = req;
 
-        const yesterday = new Date(Date.now() - 24 * 60 * 60 * 1000);
+        const oneMonthAgo = new Date(Date.now() - 30 * 24 * 60 * 60 * 1000);
 
         const last24hTransactions = await db.transaction.count({
           where: {
             fromAddress: body.userOp.sender,
             blockTimestamp: {
-              gte: yesterday,
+              gte: oneMonthAgo,
             },
           },
         });
 
-        const [isPartnerFullySponsored, hasLessThan10Transactions] = [
-          fullySponsoredPatnerIds.has(params.partnerId),
-          last24hTransactions < 10,
-        ];
-
-        let reason = "does not meet the criteria";
-
-        switch (true) {
-          case isPartnerFullySponsored:
-            reason = "partner is fully sponsored";
-            break;
-          case hasLessThan10Transactions:
-            reason = "less than 10 transactions in the last 24 hours";
-            break;
-
-          default:
-            break;
-        }
-
-        const isAllowed = isPartnerFullySponsored || hasLessThan10Transactions;
+        const { isAllowed, reason } = validateRules({
+          partnerId: params.partnerId,
+          monthlyTransactions: last24hTransactions,
+          monthlyGas: 1, // TODO: calculate the total gas used in the last 24 hours
+        });
 
         reply.send({
           isAllowed,