chore: migrate authifier into codebase (#658)

Co-authored-by: izzy <me@insrt.uk>
Signed-off-by: Zomatree <me@zomatree.live>
Signed-off-by: izzy <me@insrt.uk>

crates/delta/src/routes/mfa/totp_generate_secret.rs

@@ -0,0 +1,59 @@
+//! Generate a new secret for TOTP.
+//! POST /mfa/totp
+use revolt_result::Result;
+use revolt_models::v0;
+use revolt_database::{Database, Account, ValidatedTicket};
+use rocket::serde::json::Json;
+use rocket::State;
+
+
+/// # Generate TOTP Secret
+///
+/// Generate a new secret for TOTP.
+#[openapi(tag = "MFA")]
+#[post("/totp")]
+pub async fn totp_generate_secret(
+    db: &State<Database>,
+    mut account: Account,
+    _ticket: ValidatedTicket,
+) -> Result<Json<v0::ResponseTotpSecret>> {
+    // Generate a new secret
+    let secret = account.mfa.generate_new_totp_secret()?;
+
+    // Save model to database
+    account.save(db).await?;
+
+    // Send secret to user
+    Ok(Json(v0::ResponseTotpSecret { secret }))
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{rocket, util::test::TestHarness};
+    use revolt_database::{MFATicket, Totp};
+    use rocket::http::{Header, Status};
+    use revolt_models::v0;
+
+    #[rocket::async_test]
+    async fn success() {
+        let harness = TestHarness::new().await;
+        let (account, session, _) = harness.new_user().await;
+
+        let ticket = MFATicket::new(account.id.to_string(), true);
+        ticket.save(&harness.db).await.unwrap();
+
+        let res = harness.client
+            .post("/auth/mfa/totp")
+            .header(Header::new("X-Session-Token", session.token))
+            .header(Header::new("X-MFA-Ticket", ticket.token))
+            .dispatch()
+            .await;
+
+        assert_eq!(res.status(), Status::Ok);
+
+        let secret = res.into_json::<v0::ResponseTotpSecret>().await.unwrap().secret;
+
+        let account = harness.db.fetch_account(&account.id).await.unwrap();
+        assert_eq!(account.mfa.totp_token, Totp::Pending { secret });
+    }
+}