From 0012c25c9ab94754f3d6396e91dc3ae63d19ac9c Mon Sep 17 00:00:00 2001
From: Kjetil Orbekk <kj@orbekk.com>
Date: Sat, 5 Nov 2022 19:36:28 -0400
Subject: Update context state change code

---
 webapp/src/components/app_context_provider.rs | 29 +++++++++++++++++----------
 1 file changed, 18 insertions(+), 11 deletions(-)

(limited to 'webapp')

diff --git a/webapp/src/components/app_context_provider.rs b/webapp/src/components/app_context_provider.rs
index e3fe82e..4cf233b 100644
--- a/webapp/src/components/app_context_provider.rs
+++ b/webapp/src/components/app_context_provider.rs
@@ -8,7 +8,7 @@ pub struct ErrorInfoProperties {
     pub message: String,
 }
 
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Default)]
 pub struct AppContext {
     pub error: Option<ErrorInfoProperties>,
     pub user: Option<UserInfo>,
@@ -19,16 +19,17 @@ pub struct Props {
     pub children: Children,
 }
 
-async fn initialize_context() -> Result<AppContext, anyhow::Error> {
+async fn initialize_user_info() -> Result<UserInfo, anyhow::Error> {
     let response = Request::get("/api/user/info").send().await?;
     if response.status() == 401 {
-	web_sys::window().unwrap().location().assign("/api/login").unwrap();
+        web_sys::window()
+            .unwrap()
+            .location()
+            .assign("/api/login")
+            .unwrap();
     };
-    let user = response.json().await?;
-    Ok(AppContext {
-        user: user,
-        error: None,
-    })
+    let user_info = response.json().await?;
+    Ok(user_info)
 }
 
 #[function_component(AppContextProvider)]
@@ -40,13 +41,19 @@ pub fn app_context_provider(props: &Props) -> Html {
         use_effect_with_deps(
             move |_| {
                 wasm_bindgen_futures::spawn_local(async move {
-                    context.set(Some(Rc::new(match initialize_context().await {
-                        Ok(context) => context,
+                    let previous_context: AppContext = context
+                        .as_ref()
+                        .map_or(Default::default(), |c| (**c).clone());
+                    context.set(Some(Rc::new(match initialize_user_info().await {
+                        Ok(user_info) => AppContext {
+                            user: Some(user_info),
+                            ..previous_context
+                        },
                         Err(e) => AppContext {
-                            user: None,
                             error: Some(ErrorInfoProperties {
                                 message: format!("Could not contact server"),
                             }),
+			    ..previous_context
                         },
                     })));
                 });
-- 
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