feat: #2 add access control by

access code

app/api/access.ts

@@ -0,0 +1,16 @@
+import md5 from "spark-md5";
+
+export function getAccessCodes(): Set<string> {
+  const code = process.env.CODE;
+
+  try {
+    const codes = (code?.split(",") ?? [])
+      .filter((v) => !!v)
+      .map((v) => md5.hash(v.trim()));
+    return new Set(codes);
+  } catch (e) {
+    return new Set();
+  }
+}
+
+export const ACCESS_CODES = getAccessCodes();