ezidam, openid: refactor check app in method, verifying and send POST as well

crates/apps/src/get_valid.rs

@@ -0,0 +1,42 @@
+// error
+#[derive(thiserror::Error)]
+// the rest
+#[derive(Debug)]
+pub enum Error {
+    #[error("Database: {0}")]
+    Database(#[from] database::Error),
+
+    #[error("Bad response types")]
+    ResponseTypes,
+
+    #[error("Invalid scopes")]
+    Scopes,
+
+    #[error("Invalid application")]
+    Application,
+}
+
+use super::App;
+use database::sqlx::SqliteExecutor;
+
+impl App {
+    pub async fn get_valid_app(
+        conn: impl SqliteExecutor<'_>,
+        response_type: &str,
+        scope: &str,
+        client_id: &str,
+        redirect_uri: &str,
+    ) -> Result<App, Error> {
+        // Check for valid response types
+        openid::parse_response_types(response_type).ok_or_else(|| Error::ResponseTypes)?;
+
+        // Check for supported scopes
+        if !openid::SupportedScopes::check_supported_scopes(scope) {
+            return Err(Error::Scopes);
+        }
+
+        Self::get_one(conn, client_id, redirect_uri)
+            .await?
+            .ok_or_else(|| Error::Application)
+    }
+}