Rewrite

src/entries/background/main.ts

@@ -0,0 +1,24 @@
+import type { Match } from '~/lib/match';
+import { storageDelete, storageGet, storageSet } from '~/lib/settings';
+import { getMatch } from '~/lib/match';
+
+chrome.runtime.onMessage.addListener(async (message) => {
+	if (message.action == 'ff2mpv') {
+		await chrome.runtime.sendNativeMessage('ff2mpv', { url: message.url });
+	}
+});
+
+chrome.webRequest.onBeforeRedirect.addListener(
+	async (details) => {
+		// check if redirects origins from a previous redirect
+		if ((await storageGet('redirect')) === undefined) {
+			let match: Match;
+			if ((match = await getMatch(new URL(details.url).hostname)) !== undefined) {
+				await storageSet('redirect', match.id);
+			}
+		} else {
+			await storageDelete('redirect');
+		}
+	},
+	{ urls: ['<all_urls>'], types: ['main_frame', 'sub_frame'] }
+);