From 579883b66bceefe7b50157401bccbf66a6c5d58e Mon Sep 17 00:00:00 2001
From: rtkay123 <dev@kanjala.com>
Date: Wed, 23 Jul 2025 18:54:11 +0200
Subject: feat(auth): tower session

---
 .../auth/src/server/routes/discord/discord_auth.rs | 41 +++++++++++++++++++++-
 1 file changed, 40 insertions(+), 1 deletion(-)

(limited to 'crates/auth/src/server/routes/discord')

diff --git a/crates/auth/src/server/routes/discord/discord_auth.rs b/crates/auth/src/server/routes/discord/discord_auth.rs
index b07fa7a..5257a33 100644
--- a/crates/auth/src/server/routes/discord/discord_auth.rs
+++ b/crates/auth/src/server/routes/discord/discord_auth.rs
@@ -1,11 +1,24 @@
+use std::time::Duration;
+
+use anyhow::Context;
 use axum::{
     extract::State,
     http::HeaderMap,
     response::{IntoResponse, Redirect},
 };
 use oauth2::{CsrfToken, Scope};
+use reqwest::header::SET_COOKIE;
+use sqlx::types::uuid;
+use tower_sessions::{
+    SessionStore,
+    session::{Id, Record},
+};
 
-use crate::{error::AppError, state::AppHandle};
+use crate::{
+    error::AppError,
+    server::{CSRF_TOKEN, OAUTH_CSRF_COOKIE},
+    state::AppHandle,
+};
 
 pub async fn discord_auth(State(state): State<AppHandle>) -> Result<impl IntoResponse, AppError> {
     let (auth_url, csrf_token) = state
@@ -14,7 +27,33 @@ pub async fn discord_auth(State(state): State<AppHandle>) -> Result<impl IntoRes
         .add_scope(Scope::new("identify".to_string()))
         .url();
 
+    // Store the token in the session and retrieve the session cookie.
+    let session_id = Id(i128::from_le_bytes(uuid::Uuid::new_v4().to_bytes_le()));
+    let store = state.session_store.clone();
+
+    store
+        .create(&mut Record {
+            id: session_id,
+            data: [(
+                CSRF_TOKEN.to_string(),
+                serde_json::to_value(csrf_token).unwrap(),
+            )]
+            .into(),
+            expiry_date: time::OffsetDateTime::now_utc()
+                + Duration::from_secs(state.local_config.oauth.session_lifespan),
+        })
+        .await
+        .unwrap();
+    //        .context("failed in inserting CSRF token into session")?;
+
+    // Attach the session cookie to the response header
+    let cookie =
+        format!("{OAUTH_CSRF_COOKIE}={session_id}; SameSite=Lax; HttpOnly; Secure; Path=/");
     let mut headers = HeaderMap::new();
+    headers.insert(
+        SET_COOKIE,
+        cookie.parse().context("failed to parse cookie")?,
+    );
 
     Ok((headers, Redirect::to(auth_url.as_ref())))
 }
-- 
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