Refactor login flow

src/data/login_redirect_query.rs

@@ -0,0 +1,21 @@
+#[derive(serde::Serialize, serde::Deserialize, Debug, Eq, PartialEq, Clone)]
+pub struct LoginRedirectQuery(String);
+
+impl LoginRedirectQuery {
+    pub fn get(&self) -> &str {
+        match self.0.starts_with('/') && !self.0.starts_with("//") {
+            true => self.0.as_str(),
+            false => "/",
+        }
+    }
+
+    pub fn get_encoded(&self) -> String {
+        urlencoding::encode(self.get()).to_string()
+    }
+}
+
+impl Default for LoginRedirectQuery {
+    fn default() -> Self {
+        Self("/".to_string())
+    }
+}

src/data/mod.rs

@@ -11,4 +11,5 @@ pub mod id_token;
 pub mod code_challenge;
 pub mod open_id_user_info;
 pub mod access_token;
-pub mod totp_key;
+pub mod totp_key;
+pub mod login_redirect_query;