Avoid breaking changes, keep response fields as deprecated

crates/api/src/site/leave_admin.rs

@@ -76,5 +76,7 @@ pub async fn leave_admin(
     admin_oauth_providers: None,
     blocked_urls,
     tagline,
+    taglines: vec![],
+    custom_emojis: vec![],
   }))
 }

crates/api_common/src/site.rs

@@ -306,6 +306,8 @@ pub struct EditSite {
 /// The response for a site.
 pub struct SiteResponse {
   pub site_view: SiteView,
+  /// deprecated, use field `tagline` or /api/v3/tagline/list
+  pub taglines: Vec<()>,
 }
 
 #[skip_serializing_none]
@@ -320,6 +322,10 @@ pub struct GetSiteResponse {
   pub my_user: Option<MyUserInfo>,
   pub all_languages: Vec<Language>,
   pub discussion_languages: Vec<LanguageId>,
+  /// deprecated, use field `tagline` or /api/v3/tagline/list
+  pub taglines: Vec<()>,
+  /// deprecated, use /api/v3/custom_emoji/list
+  pub custom_emojis: Vec<()>,
   /// If the site has any taglines, a random one is included here for displaying
   pub tagline: Option<Tagline>,
   /// A list of external auth methods your site supports.

crates/api_crud/src/site/create.rs

@@ -139,7 +139,10 @@ pub async fn create_site(
     local_site_rate_limit_to_rate_limit_config(&site_view.local_site_rate_limit);
   context.rate_limit_cell().set_config(rate_limit_config);
 
-  Ok(Json(SiteResponse { site_view }))
+  Ok(Json(SiteResponse {
+    site_view,
+    taglines: vec![],
+  }))
 }
 
 fn validate_create_payload(local_site: &LocalSite, create_site: &CreateSite) -> LemmyResult<()> {

crates/api_crud/src/site/read.rs

@@ -59,6 +59,8 @@ pub async fn get_site(
         tagline,
         oauth_providers: Some(oauth_providers),
         admin_oauth_providers: Some(admin_oauth_providers),
+        taglines: vec![],
+        custom_emojis: vec![],
       })
     })
     .await

crates/api_crud/src/site/update.rs

@@ -193,7 +193,10 @@ pub async fn update_site(
     local_site_rate_limit_to_rate_limit_config(&site_view.local_site_rate_limit);
   context.rate_limit_cell().set_config(rate_limit_config);
 
-  Ok(Json(SiteResponse { site_view }))
+  Ok(Json(SiteResponse {
+    site_view,
+    taglines: vec![],
+  }))
 }
 
 fn validate_update_payload(local_site: &LocalSite, edit_site: &EditSite) -> LemmyResult<()> {