Add apple app ID to meta tags (#1025)

.env

@@ -114,6 +114,8 @@ PUBLIC_ANNOUNCEMENT_BANNERS=`[
   }
 ]`
 
+PUBLIC_APPLE_APP_ID=#1234567890 / Leave empty to disable
+
 PARQUET_EXPORT_DATASET=
 PARQUET_EXPORT_HF_TOKEN=
 ADMIN_API_SECRET=# secret to admin API calls, like computing usage stats or exporting parquet data

.env.template

@@ -237,7 +237,7 @@ PUBLIC_APP_DATA_SHARING=0
 PUBLIC_APP_DISCLAIMER=1
 
 PUBLIC_PLAUSIBLE_SCRIPT_URL="/js/script.js"
-
+PUBLIC_APPLE_APP_ID=6476778843
 # Not part of the .env but set as other variables in the space
 # ADDRESS_HEADER=X-Forwarded-For
 # XFF_DEPTH=2

src/routes/+layout.svelte

@@ -8,6 +8,7 @@
 	import { browser } from "$app/environment";
 
 	import {
+		PUBLIC_APPLE_APP_ID,
 		PUBLIC_APP_DESCRIPTION,
 		PUBLIC_ORIGIN,
 		PUBLIC_PLAUSIBLE_SCRIPT_URL,
@@ -176,6 +177,10 @@
 			src={PUBLIC_PLAUSIBLE_SCRIPT_URL}
 		></script>
 	{/if}
+
+	{#if PUBLIC_APPLE_APP_ID}
+		<meta name="apple-itunes-app" content={`app-id=${PUBLIC_APPLE_APP_ID}`} />
+	{/if}
 </svelte:head>
 
 {#if !$settings.ethicsModalAccepted && $page.url.pathname !== `${base}/privacy`}