Add openid-connecter discovery route

src/controllers/mod.rs

@@ -3,4 +3,5 @@ pub mod base_controller;
 pub mod login_controller;
 pub mod settings_controller;
 pub mod admin_controller;
-pub mod admin_api;
+pub mod admin_api;
+pub mod openid_controller;

src/controllers/openid_controller.rs

@@ -0,0 +1,19 @@
+use actix_web::{HttpResponse, Responder, web};
+
+use crate::data::app_config::AppConfig;
+use crate::data::openid_config::OpenIDConfig;
+
+pub async fn get_configuration(app_conf: web::Data<AppConfig>) -> impl Responder {
+    HttpResponse::Ok().json(OpenIDConfig {
+        issuer: app_conf.full_url("/"),
+        authorization_endpoint: app_conf.full_url("openid/authorize"),
+        token_endpoint: app_conf.full_url("openid/token"),
+        userinfo_endpoint: app_conf.full_url("openid/userinfo"),
+        jwks_uri: app_conf.full_url("openid/jwks_uri"),
+        scopes_supported: vec!["openid", "profile", "email"],
+        response_types_supported: vec!["code", "id_token", "token id_token"],
+        subject_types_supported: vec!["public"],
+        id_token_signing_alg_values_supported: vec!["RS256"],
+        claims_supported: vec!["sub", "exp", "name", "given_name", "family_name", "email"]
+    })
+}