add desynth data update script

bin/update-desynth-data

@@ -0,0 +1,28 @@
+#!/usr/bin/env -S node --env-file-if-exists=.env
+
+import {getMediawikiClient} from '../lib/config.js';
+const mw = await getMediawikiClient();
+
+const start = parseInt(process.env.START ?? '1', 10)
+for (let bin = start; bin <= 50; bin += 1) {
+	// files are at e.g. https://gacha.infi.ovh/data/desynthesis/026000.json
+	const filename = `${String(bin).padStart(3, '0')}000.json`;
+	const url = `https://gacha.infi.ovh/data/desynthesis/${filename}`;
+	const targetPage = `Module:Desynthesis/${filename}`;
+	console.log('Bin', bin, url, '->', targetPage);
+
+	// download
+	const data = await fetch(`https://gacha.infi.ovh/data/desynthesis/${filename}`).then(response => response.json());
+
+	// upload
+	try {
+		await mw.editPage(`Module:Desynthesis/${filename}`, JSON.stringify(data), 'update desynth data');
+		console.log('Written.');
+	} catch (error) {
+		// terrible
+		throw error;
+	}
+
+	// self-ratelimiting - 6 requests per minute should be enough for anyone :clueless:
+	await new Promise(resolve => setTimeout(resolve, 10000));
+}