feat(api): ✨ Implement Challenges API

utils/challenges.ts

@@ -0,0 +1,39 @@
+import { createChallenge } from "altcha-lib";
+import { sql } from "drizzle-orm";
+import { db } from "~/drizzle/db";
+import { Challenges } from "~/drizzle/schema";
+import { config } from "~/packages/config-manager";
+
+export const generateChallenge = async (
+    maxNumber = config.validation.challenges.difficulty,
+) => {
+    const expirationDate = new Date(
+        Date.now() + config.validation.challenges.expiration * 1000,
+    );
+
+    const uuid = (await db.execute(sql<string>`SELECT uuid_generate_v7()`))
+        .rows[0].uuid_generate_v7 as string;
+
+    const challenge = await createChallenge({
+        hmacKey: config.validation.challenges.key,
+        expires: expirationDate,
+        maxNumber,
+        algorithm: "SHA-256",
+        params: {
+            challenge_id: uuid,
+        },
+    });
+
+    const result = (
+        await db
+            .insert(Challenges)
+            .values({
+                id: uuid,
+                challenge,
+                expiresAt: expirationDate.toISOString(),
+            })
+            .returning()
+    )[0];
+
+    return result;
+};