From 51949f1119cc58c7cb72e3fb8b23656ef1efa99c Mon Sep 17 00:00:00 2001
From: Fuwn <contact@fuwn.net>
Date: Sun, 22 Mar 2026 03:42:05 +0000
Subject: refactor: extract app origin config

---
 scripts/check-with-fallback-env.sh          |  1 +
 src/lib/Settings/Categories/RSSFeeds.svelte |  6 ++----
 src/lib/Utility/appOrigin.ts                | 32 +++++++++++++++++++++++++++++
 src/lib/Utility/image.ts                    |  4 ++--
 src/lib/Utility/proxy.ts                    |  4 ++--
 src/lib/Utility/root.ts                     |  6 ++----
 6 files changed, 41 insertions(+), 12 deletions(-)
 create mode 100644 src/lib/Utility/appOrigin.ts

diff --git a/scripts/check-with-fallback-env.sh b/scripts/check-with-fallback-env.sh
index 5efb64d4..a3c5d7c0 100644
--- a/scripts/check-with-fallback-env.sh
+++ b/scripts/check-with-fallback-env.sh
@@ -4,6 +4,7 @@ set -euo pipefail
 
 export SUPABASE_URL="${SUPABASE_URL:-http://localhost:54321}"
 export SUPABASE_ANON_KEY="${SUPABASE_ANON_KEY:-dummy}"
+export PUBLIC_APP_ORIGIN="${PUBLIC_APP_ORIGIN:-http://localhost:5173}"
 export PUBLIC_ANILIST_CLIENT_ID="${PUBLIC_ANILIST_CLIENT_ID:-dummy}"
 export ANILIST_CLIENT_SECRET="${ANILIST_CLIENT_SECRET:-dummy}"
 export PUBLIC_ANILIST_REDIRECT_URI="${PUBLIC_ANILIST_REDIRECT_URI:-http://localhost:5173/api/oauth/callback}"
diff --git a/src/lib/Settings/Categories/RSSFeeds.svelte b/src/lib/Settings/Categories/RSSFeeds.svelte
index bf40eab4..fee411f4 100644
--- a/src/lib/Settings/Categories/RSSFeeds.svelte
+++ b/src/lib/Settings/Categories/RSSFeeds.svelte
@@ -1,7 +1,7 @@
 <script lang="ts">
 import { options } from "$lib/Notification/options";
 import { addNotification } from "$lib/Notification/store";
-import { env } from "$env/dynamic/public";
+import { appOrigin } from "$lib/Utility/appOrigin";
 import locale from "$stores/locale";
 import SettingHint from "../SettingHint.svelte";
 import tooltip from "$lib/Tooltip/tooltip";
@@ -17,9 +17,7 @@ export let user: { accessToken: string; refreshToken: string };
       })
     );
     navigator.clipboard.writeText(
-      `https://${
-        env.PUBLIC_ANILIST_REDIRECT_URI?.includes('192.168') ? '192.168.1.60:5173' : 'due.moe'
-      }/feeds/activity-notifications?token=${user.accessToken}&refresh=${user.refreshToken}`
+      `${appOrigin()}/feeds/activity-notifications?token=${user.accessToken}&refresh=${user.refreshToken}`
     );
   }}
 >
diff --git a/src/lib/Utility/appOrigin.ts b/src/lib/Utility/appOrigin.ts
new file mode 100644
index 00000000..8d534d81
--- /dev/null
+++ b/src/lib/Utility/appOrigin.ts
@@ -0,0 +1,32 @@
+import { browser, dev } from "$app/environment";
+import { env } from "$env/dynamic/public";
+
+const LOCAL_ORIGIN = "http://localhost:5173";
+const PRODUCTION_ORIGIN = "https://due.moe";
+
+const normaliseOrigin = (origin: string) =>
+	origin.endsWith("/") ? origin.slice(0, -1) : origin;
+
+const isPrivateHostname = (hostname: string) =>
+	hostname === "localhost" ||
+	hostname === "127.0.0.1" ||
+	hostname.endsWith(".local") ||
+	/^10\./.test(hostname) ||
+	/^192\.168\./.test(hostname) ||
+	/^172\.(1[6-9]|2\d|3[0-1])\./.test(hostname);
+
+export const appOrigin = () => {
+	if (browser) return window.location.origin;
+
+	if (env.PUBLIC_APP_ORIGIN) return normaliseOrigin(env.PUBLIC_APP_ORIGIN);
+
+	return dev ? LOCAL_ORIGIN : PRODUCTION_ORIGIN;
+};
+
+export const isLocalApp = () => {
+	const { hostname } = new URL(appOrigin());
+
+	return dev || isPrivateHostname(hostname);
+};
+
+export { LOCAL_ORIGIN, PRODUCTION_ORIGIN };
diff --git a/src/lib/Utility/image.ts b/src/lib/Utility/image.ts
index 2d08e62f..c1c2ae0e 100644
--- a/src/lib/Utility/image.ts
+++ b/src/lib/Utility/image.ts
@@ -1,9 +1,9 @@
-import { env } from "$env/dynamic/public";
+import { isLocalApp } from "$lib/Utility/appOrigin";
 
 export const cdn = (urlString: string | undefined) =>
 	!urlString ||
 	!["http", "https"].some((protocol) => urlString.startsWith(protocol)) ||
-	env.PUBLIC_ANILIST_REDIRECT_URI?.includes("localhost") ||
+	isLocalApp() ||
 	[
 		"api.telegram.org",
 		"telegra.ph",
diff --git a/src/lib/Utility/proxy.ts b/src/lib/Utility/proxy.ts
index c6577ac0..32f31226 100644
--- a/src/lib/Utility/proxy.ts
+++ b/src/lib/Utility/proxy.ts
@@ -1,9 +1,9 @@
-import { env } from "$env/dynamic/public";
+import { isLocalApp } from "$lib/Utility/appOrigin";
 
 export const proxy = (url: string, disable = false) => {
 	const randomKey = Math.floor(Math.random() * 90) + 10;
 
-	return env.PUBLIC_ANILIST_REDIRECT_URI?.includes("localhost") && !disable
+	return isLocalApp() && !disable
 		? url
 		: `https://proxy.due.moe/?d2=${btoa(
 				url
diff --git a/src/lib/Utility/root.ts b/src/lib/Utility/root.ts
index bf8bb11f..a69755e5 100644
--- a/src/lib/Utility/root.ts
+++ b/src/lib/Utility/root.ts
@@ -1,8 +1,6 @@
-import { env } from "$env/dynamic/public";
+import { appOrigin, LOCAL_ORIGIN } from "$lib/Utility/appOrigin";
 
 export const root = (path: string, enable = false) =>
-	env.PUBLIC_ANILIST_REDIRECT_URI?.includes("localhost") || enable
-		? `http://localhost:5173${path}`
-		: `https://due.moe${path}`;
+	`${enable ? LOCAL_ORIGIN : appOrigin()}${path}`;
 
 export default root;
-- 
cgit v1.2.3