feat: implement provider and student specific login contexts

src/utils/common.rs

@@ -0,0 +1,33 @@
+use leptos::prelude::*;
+use leptos_oidc::{Algorithm, AuthSignal, TokenData};
+use crate::common::UserClaims;
+
+pub fn use_origin() -> String {
+    #[cfg(target_arch = "wasm32")] {
+        use leptos::web_sys;
+        // Just get the current URL origin.
+        web_sys::window()
+            .unwrap()
+            .location()
+            .origin()
+            .unwrap_or("http://localhost:3000/".to_string())
+    }
+
+    #[cfg(not(target_arch = "wasm32"))] {
+        // Read the expected origin out of an environment variable.
+        std::env::var("LP_SITE_ORIGIN").unwrap_or("http://localhost:3000/".to_string())
+    }
+}
+
+/// Gets the current user claims. This function should only be used in an area that has
+/// access to an AuthSignal, or it will result in a total failure.
+pub fn get_user_claims() -> Signal<Option<TokenData<UserClaims>>> {
+    let auth = use_context::<AuthSignal>().expect("Couldn't find AuthSignal.");
+    Signal::derive(move || {
+        auth.with(|auth| {
+            auth.authenticated().and_then(|data| {
+                data.decoded_access_token::<UserClaims>(Algorithm::RS256, &["account"])
+            })
+        })
+    })
+}