From af2ab839ac5801c86f8606ba5c57f6dad744f477 Mon Sep 17 00:00:00 2001
From: James Lyne <jim+github@not-null.co.uk>
Date: Tue, 31 May 2022 11:58:56 +0100
Subject: [PATCH] Display error if JS fails to load. Fixes #404

---
 index.html     | 10 ++++++++++
 src/index.d.ts |  1 +
 src/main.ts    |  1 +
 3 files changed, 12 insertions(+)

diff --git a/index.html b/index.html
index 5698004..8267af3 100644
--- a/index.html
+++ b/index.html
@@ -386,5 +386,15 @@
 
     <main id="app" aria-hidden="true"></main>
     <script type="module" src="/src/main.ts"></script>
+
+    <script>
+        window.addEventListener('load', () => {
+            if(!window.liveAtlasLoaded) {
+                document.getElementById('splash__error').setAttribute('aria-hidden', 'false');
+                document.getElementById('splash__error-message').innerText = 'Required LiveAtlas files are missing or failed to load.\nPlease reinstall LiveAtlas.';
+                document.getElementById('splash__spinner').style.visibility = 'hidden';
+            }
+        });
+    </script>
   </body>
 </html>
diff --git a/src/index.d.ts b/src/index.d.ts
index 7d2a6dc..07eddc5 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -47,6 +47,7 @@ declare global {
 	// noinspection JSUnusedGlobalSymbols
 	interface Window {
 		liveAtlasConfig: LiveAtlasGlobalConfig,
+		liveAtlasLoaded: ?boolean,
 	}
 
 	declare const process : {
diff --git a/src/main.ts b/src/main.ts
index c7eaa37..4e743cd 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -59,6 +59,7 @@ registerMapProvider('squaremap', Pl3xmapMapProvider);
 registerMapProvider('overviewer', OverviewerMapProvider);
 
 const config = window.liveAtlasConfig;
+window.liveAtlasLoaded = true;
 
 try {
 	config.servers = loadConfig(config);