Redirect user for authentication

src/data/provider_configuration.rs

@@ -1,7 +1,9 @@
+use crate::actors::providers_states_actor::ProviderLoginState;
 use std::cell::RefCell;
 use std::collections::HashMap;
 
-use crate::constants::OIDC_PROVIDERS_LIFETIME;
+use crate::constants::{OIDC_PROVIDERS_LIFETIME, OIDC_PROVIDER_CB_URI};
+use crate::data::app_config::AppConfig;
 use crate::data::jwt_signer::JsonWebKey;
 use crate::data::provider::Provider;
 use crate::utils::err::Res;
@@ -30,6 +32,18 @@ pub struct ProviderConfiguration {
     pub expire: u64,
 }
 
+impl ProviderConfiguration {
+    /// Get the URL where a user should be redirected to authenticate
+    pub fn auth_url(&self, provider: &Provider, state: &ProviderLoginState) -> String {
+        let authorization_url = &self.discovery.authorization_endpoint;
+        let client_id = urlencoding::encode(&provider.client_id).to_string();
+        let state = urlencoding::encode(&state.state_id).to_string();
+        let callback_url = AppConfig::get().full_url(OIDC_PROVIDER_CB_URI);
+
+        format!("{authorization_url}?response_type=code&scope=openid%20profile%20email&client_id={client_id}&state={state}&redirect_uri={callback_url}")
+    }
+}
+
 thread_local! {
     static THREAD_CACHE: RefCell<HashMap<String, ProviderConfiguration>> = RefCell::new(Default::default());
 }