refactor(polar): isolate sandbox conditional

Author: hobbescodes

.env.development

@@ -2,3 +2,6 @@
 AUTH_BASE_URL="https://localhost:8000/api/auth"
 
 CHECKOUT_SUCCESS_URL="https://localhost:3000/confirmation"
+
+# Define whether to connect to Polar's `sandbox` environment
+SANDBOX="true"

src/lib/config/env.config.ts

@@ -12,7 +12,9 @@ export const {
   POLAR_WEBHOOK_SECRET,
   CHECKOUT_SUCCESS_URL,
   AUTH_BASE_URL,
+  SANDBOX,
 } = process.env;
 
 export const isDevEnv = NODE_ENV === "development";
 export const isProdEnv = NODE_ENV === "production";
+export const isSandbox = SANDBOX === "true";

src/server.ts

@@ -19,6 +19,7 @@ import {
   SKIP_AUTH,
   isDevEnv,
   isProdEnv,
+  isSandbox,
 } from "lib/config/env.config";
 import { dbPool as db } from "lib/db/db";
 import { users } from "lib/drizzle/schema";
@@ -93,7 +94,7 @@ app.get(
   Checkout({
     accessToken: POLAR_ACCESS_TOKEN,
     successUrl: CHECKOUT_SUCCESS_URL,
-    server: isDevEnv ? "sandbox" : "production",
+    server: isSandbox ? "sandbox" : "production",
   }),
 );
 
@@ -107,7 +108,7 @@ app.get(
 
       return customerId;
     },
-    server: isDevEnv ? "sandbox" : "production",
+    server: isSandbox ? "sandbox" : "production",
   }),
 );