From 927a345802871092d50b496dc18c28090780d4bf Mon Sep 17 00:00:00 2001
From: Awiteb <a@4rs.nl>
Date: Fri, 12 Jul 2024 23:15:33 +0300
Subject: [PATCH] feat: Handle `ChatRequest` event

Signed-off-by: Awiteb <a@4rs.nl>
---
 crates/oxidetalis/src/websocket/mod.rs | 42 ++++++++++++++++++++++----
 1 file changed, 36 insertions(+), 6 deletions(-)

diff --git a/crates/oxidetalis/src/websocket/mod.rs b/crates/oxidetalis/src/websocket/mod.rs
index ed4a901..8607236 100644
--- a/crates/oxidetalis/src/websocket/mod.rs
+++ b/crates/oxidetalis/src/websocket/mod.rs
@@ -21,6 +21,7 @@ use errors::{WsError, WsResult};
 use futures::{channel::mpsc, FutureExt, StreamExt, TryStreamExt};
 use once_cell::sync::Lazy;
 use oxidetalis_core::{cipher::K256Secret, types::PublicKey};
+use oxidetalis_entities::prelude::*;
 use salvo::{
     handler,
     http::StatusError,
@@ -30,15 +31,18 @@ use salvo::{
     Response,
     Router,
 };
+use sea_orm::DatabaseConnection;
 use tokio::{sync::RwLock, task::spawn as tokio_spawn, time::sleep as tokio_sleep};
 
-mod errors;
+pub mod errors;
 mod events;
+mod handlers;
 
 pub use events::*;
 use uuid::Uuid;
 
 use crate::{
+    database::UserTableExt,
     extensions::{DepotExt, OnlineUsersExt},
     middlewares,
     nonce::NonceCache,
@@ -92,6 +96,7 @@ pub async fn user_connected(
     depot: &Depot,
 ) -> Result<(), StatusError> {
     let nonce_cache = depot.nonce_cache();
+    let db_conn = depot.db_conn();
     let public_key =
         utils::extract_public_key(req).expect("The public key was checked in the middleware");
     // FIXME: The config should hold `K256Secret` not `PrivateKey`
@@ -100,7 +105,7 @@ pub async fn user_connected(
 
     WebSocketUpgrade::new()
         .upgrade(req, res, move |ws| {
-            handle_socket(ws, nonce_cache, public_key, shared_secret)
+            handle_socket(ws, db_conn, nonce_cache, public_key, shared_secret)
         })
         .await
 }
@@ -108,6 +113,7 @@ pub async fn user_connected(
 /// Handle the websocket connection
 async fn handle_socket(
     ws: WebSocket,
+    db_conn: Arc<DatabaseConnection>,
     nonce_cache: Arc<NonceCache>,
     user_public_key: PublicKey,
     user_shared_secret: [u8; 32],
@@ -123,15 +129,31 @@ async fn handle_socket(
     });
     tokio_spawn(fut);
     let conn_id = Uuid::new_v4();
-    let user = SocketUserData::new(user_public_key, user_shared_secret, sender.clone());
-    ONLINE_USERS.add_user(&conn_id, user).await;
+    let Ok(user) = db_conn.get_user_by_pubk(&user_public_key).await else {
+        let _ = sender.unbounded_send(Ok(ServerEvent::from(WsError::InternalServerError)
+            .sign(&user_shared_secret)
+            .as_ref()
+            .into()));
+        return;
+    };
+    ONLINE_USERS
+        .add_user(
+            &conn_id,
+            SocketUserData::new(user_public_key, user_shared_secret, sender.clone()),
+        )
+        .await;
     log::info!("New user connected: ConnId(={conn_id}) PublicKey(={user_public_key})");
 
+    // TODO: Send the incoming chat request to the user, while they are offline.
+    // This after adding last_login col to the user table
+
     let fut = async move {
         while let Some(Ok(msg)) = user_ws_receiver.next().await {
             match handle_ws_msg(msg, &nonce_cache, &user_shared_secret).await {
                 Ok(event) => {
-                    if let Some(server_event) = handle_events(event, &conn_id).await {
+                    if let Some(server_event) =
+                        handle_events(event, &db_conn, &conn_id, user.as_ref()).await
+                    {
                         if let Err(err) = sender.unbounded_send(Ok(server_event
                             .sign(&user_shared_secret)
                             .as_ref()
@@ -182,13 +204,21 @@ async fn handle_ws_msg(
 }
 
 /// Handle user events, and return the server event if needed
-async fn handle_events(event: ClientEvent, conn_id: &Uuid) -> Option<ServerEvent<Unsigned>> {
+async fn handle_events(
+    event: ClientEvent,
+    db: &DatabaseConnection,
+    conn_id: &Uuid,
+    user: Option<&UserModel>,
+) -> Option<ServerEvent<Unsigned>> {
     match &event.event {
         ClientEventType::Ping { .. } => Some(ServerEvent::pong()),
         ClientEventType::Pong { .. } => {
             ONLINE_USERS.update_pong(conn_id).await;
             None
         }
+        ClientEventType::ChatRequest { to } => {
+            Some(handlers::handle_chat_request(db, user, to).await)
+        }
     }
 }