[scraper] adds nyaa pantsu scraper

scraper/lib/requestHelper.js

@@ -0,0 +1,21 @@
+const UserAgent = require('user-agents');
+const userAgent = new UserAgent();
+
+function getRandomUserAgent() {
+  return userAgent.random().toString();
+}
+
+function defaultOptionsWithProxy() {
+  if (process.env.PROXY_HOST && process.env.PROXY_TYPE) {
+    return {
+      proxy: process.env.PROXY_HOST,
+      headers: {
+        'user-agent': getRandomUserAgent(),
+        'proxy-type': process.env.PROXY_TYPE
+      }
+    }
+  }
+  return { userAgent: getRandomUserAgent() };
+}
+
+module.exports = { getRandomUserAgent, defaultOptionsWithProxy };