fix: return default logo if empty (#519)

* fix: ensure to return default logo

* cleanup

---------

Co-authored-by: Maciek <mwojcik@teonite.com>
Co-authored-by: Maciej Wójcik <wojcik91@gmail.com>

src/handlers/settings.rs

@@ -17,12 +17,26 @@ use crate::{
     AppState,
 };
 
+static DEFAULT_NAV_LOGO_URL: &str = "/svg/defguard-nav-logo.svg";
+static DEFAULT_MAIN_LOGO_URL: &str = "/svg/logo-defguard-white.svg";
+
 pub async fn get_settings(State(appstate): State<AppState>) -> ApiResult {
     debug!("Retrieving settings");
-    let settings = Settings::find_by_id(&appstate.pool, 1).await?;
-    info!("Retrieved settings");
+    if let Some(mut settings) = Settings::find_by_id(&appstate.pool, 1).await? {
+        if settings.nav_logo_url.is_empty() {
+            settings.nav_logo_url = DEFAULT_NAV_LOGO_URL.into();
+        }
+        if settings.main_logo_url.is_empty() {
+            settings.main_logo_url = DEFAULT_MAIN_LOGO_URL.into();
+        }
+        return Ok(ApiResponse {
+            json: json!(settings),
+            status: StatusCode::OK,
+        });
+    }
+    debug!("Retrieved settings");
     Ok(ApiResponse {
-        json: json!(settings),
+        json: json!({}),
         status: StatusCode::OK,
     })
 }
@@ -42,7 +56,13 @@ pub async fn update_settings(
 
 pub async fn get_settings_essentials(State(appstate): State<AppState>) -> ApiResult {
     debug!("Retrieving essential settings");
-    let settings = SettingsEssentials::get_settings_essentials(&appstate.pool).await?;
+    let mut settings = SettingsEssentials::get_settings_essentials(&appstate.pool).await?;
+    if settings.nav_logo_url.is_empty() {
+        settings.nav_logo_url = DEFAULT_NAV_LOGO_URL.into();
+    }
+    if settings.main_logo_url.is_empty() {
+        settings.main_logo_url = DEFAULT_MAIN_LOGO_URL.into();
+    }
     info!("Retrieved essential settings");
     Ok(ApiResponse {
         json: json!(settings),
@@ -64,8 +84,8 @@ pub async fn set_default_branding(
     match settings {
         Some(mut settings) => {
             settings.instance_name = "Defguard".into();
-            settings.nav_logo_url = "/svg/defguard-nav-logo.svg".into();
-            settings.main_logo_url = "/svg/logo-defguard-white.svg".into();
+            settings.nav_logo_url = DEFAULT_NAV_LOGO_URL.into();
+            settings.main_logo_url = DEFAULT_MAIN_LOGO_URL.into();
             settings.save(&appstate.pool).await?;
             info!(
                 "User {} restored default branding settings",
@@ -97,7 +117,7 @@ pub async fn patch_settings(
 pub async fn test_ldap_settings(_admin: AdminRole, State(appstate): State<AppState>) -> ApiResult {
     debug!("Testing LDAP connection");
     if LDAPConnection::create(&appstate.pool).await.is_ok() {
-        debug!("LDAP connected succesfully");
+        debug!("LDAP connected successfully");
         Ok(ApiResponse {
             json: json!({}),
             status: StatusCode::OK,