[Let] import relay set to Rabbit

YTYT0707 — 2025-02-27T23:50:17Z
/*
 * @title import relay set to Rabbit
 * @description リレーからkind30002イベントを取得してRabbitにリレーセットをインポートする
 * @include https://rabbit.syusui.net/*
 * @license CC0 1.0
 * @require
 */

(async () => {
	let relayUrl = 'wss://relay-jp.nostr.wirednet.jp';

	const getPubkey = async () => {
		let pubkey; //Node.jsでデバッグする際はここに初期値を入れてください。無ければ最新の誰かのイベントで代用します。
		const nostr = globalThis.window?.nostr;
		if (nostr?.getPublicKey) {
			try {
				pubkey = await nostr.getPublicKey();
			} catch (error) {
				console.warn(error);
			}
		}
		return pubkey;
	};

	const getEvent30002 = async (pubkey) => {
		return new Promise((resolve) => {
			const ws = new WebSocket(relayUrl);
			const subscription_id = 'getrelaysetinrabbit';
			let res = [];
			ws.onopen = () => {
				const req = [
					'REQ',
					subscription_id,
					pubkey ? { kinds: [30002], authors: [pubkey] } : { kinds: [30002], limit: 1 }
				];
				ws.send(JSON.stringify(req));
			};
			ws.onmessage = (e) => {
				const msg = JSON.parse(e.data);
				switch (msg[0]) {
					case 'EVENT':
						res.push(msg[2]);
						break;
					case 'EOSE':
						ws.send(JSON.stringify(['CLOSE', subscription_id]));
						ws.close();
						resolve(res);
						break;
					default:
						console.log(msg);
						break;
				}
			};
			ws.onerror = () => {
				console.error('failed to connect');
			};
		});
	};

	const main = async () => {
		relayUrl = window.prompt('Input relay URL.', relayUrl);
		if (!URL.canParse(relayUrl)) {
			console.warn(`Invalid URL: ${relayUrl}`);
			return;
		}
		let pubkey;
		try {
			pubkey = await getPubkey();
		} catch (error) {
			console.warn(error);
			return;
		}
		if (globalThis.window && !pubkey) {
			console.warn('pubkey is empty.');
			return;
		}
		let ev30002s;
		try {
			ev30002s = await getEvent30002(pubkey);
		} catch (error) {
			console.warn(error);
			return;
		}
		let relays;
		for (const ev of ev30002s) {
			const d = ev.tags.find((tag) => tag.length >= 2 && tag[0] === 'd')?.at(1) ?? '';
			const rs = ev.tags
				.filter((tag) => tag.length >= 2 && tag[0] === 'relay' && URL.canParse(tag[1]))
				.map((tag) => tag[1]);
			if (window.confirm(`Do you want to use "${d}" ?\n\n` + rs.join('\n'))) {
				relays = rs;
				break;
			}
		}
		if (relays === undefined) {
			return;
		}
		if (globalThis.window) {
			const config = JSON.parse(localStorage['RabbitConfig']);
			config.relayUrls = Array.from(new Set([...config.relayUrls, ...relays]));
			localStorage['RabbitConfig'] = JSON.stringify(config);
			alert('Complete. Please reload by yourself.');
		} else {
			console.log({ relays });
			console.log('Complete.');
		}
	};

	main();
})();
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[Let] import relay set to Rabbit
