start implementing basic login functionality

1 files changed, 46 insertions, 0 deletions

diff --git a/backend/src/db/sessions.rs b/backend/src/db/sessions.rs
new file mode 100644
index 0000000..0cc3f1a
--- /dev/null
+++ b/backend/src/db/sessions.rs
@@ -0,0 +1,46 @@
+use super::users::User;
+use crate::schema::{sessions, users};
+use base64;
+use diesel::PgConnection;
+use diesel::{insert_into, prelude::*, Insertable, RunQueryDsl};
+use rand::{self, Rng};
+
+#[derive(Insertable)]
+#[table_name = "sessions"]
+struct NewSession {
+    token: String,
+    user_id: i32,
+}
+
+#[derive(Queryable, Debug, PartialEq)]
+pub struct Session {
+    pub id: i32,
+    pub user_id: i32,
+    pub token: String,
+}
+
+pub fn create_session(user: &User, conn: &PgConnection) -> Session {
+    let new_session = NewSession {
+        token: gen_session_token(),
+        user_id: user.user_id,
+    };
+    let session = insert_into(sessions::table)
+        .values(&new_session)
+        .get_result::<Session>(conn)
+        .unwrap();
+
+    return session;
+}
+
+pub fn find_user_by_session(token: &str, conn: &PgConnection) -> QueryResult<(Session, User)> {
+    sessions::table
+        .inner_join(users::table)
+        .filter(sessions::token.eq(&token))
+        .first::<(Session, User)>(conn)
+}
+
+pub fn gen_session_token() -> String {
+    let mut rng = rand::thread_rng();
+    let token: [u8; 32] = rng.gen();
+    return base64::encode(&token);
+}