Add a helper script for retrieving language data from SplatNet

This will help for manually-specified translations.

src/updater/getSplatNetLanguageFiles.js

@@ -0,0 +1,36 @@
+// This is a helper used to retrieve language files from SplatNet.
+// These files aren't used directly, but are just downloaded for help with updating manual translation files.
+
+require('./bootstrap');
+const path = require('path');
+const fs = require('fs');
+const mkdirp = require('mkdirp');
+const axios = require('axios');
+const { writeFormattedJson } = require('./utilities');
+const { languages } = require('../js/regions');
+const SplatNet = require('./splatnet');
+
+const outputPath = path.resolve('storage/lang');
+
+mkdirp(outputPath);
+
+(async () => {
+    for (let { region, language } of languages) {
+        let splatnet = new SplatNet(region, language);
+        let client = splatnet.getClient();
+        client.defaults.baseURL = 'https://app.splatoon2.nintendo.net';
+
+        // Get the main SplatNet page
+        let response = await client.get('/');
+        // The first script tag on the page is the localization file
+        let matches = response.data.match(/script src="(.*)"/);
+        // Download the localization file
+        response = await client.get(matches[1]);
+        // Set up a fake "window" to store the translations and run the downloaded file
+        let window = {};
+        eval(response.data);
+        // The localization data is now in window.LocalizedMessage
+        // Store the data to a JSON file
+        writeFormattedJson(`${outputPath}/${region}-${language}.json`, window.LocalizedMessage);
+    }
+})();