const fs = require("fs");
const path    = require("path");
const Blocker = require("ad-block");

const client = new Blocker.AdBlockClient();
const file   = path.resolve(__dirname, "detector.buffer");

module.exports.client     = client;
module.exports.initialize = () =>
	new Promise((resolve, reject) => {
		fs.readFile(file, (err, buffer) => {
			if (err) {
				return reject(err);
			}
			client.deserialize(buffer);
			return resolve();
		});
	});

const none = Blocker.FilterOptions.noFilterOption;
const isAd = (req, base) => client.matches(req, none, base);

module.exports.containsAds = (req, base) => isAd(req, base);
module.exports.isAd        = isAd;