package net.curisit.securis;

import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;

import net.curisit.securis.beans.RequestBean;
import net.curisit.securis.utils.LicUtils;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ReqGenerator {

	@SuppressWarnings("unused")
	private static final Logger log = LoggerFactory.getLogger(ReqGenerator.class);

	private static ReqGenerator singleton = new ReqGenerator();

	private byte[] LOGO_SECRET;

	private ReqGenerator() {
		try {
			LOGO_SECRET = "Logo ipsum s3cr3t test áíóú".getBytes("utf-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
	}

	public static ReqGenerator getInstance() {
		return singleton;
	}

	public RequestBean createRequest(String appCode, String customerCode) throws SeCurisException {
		RequestBean req = new RequestBean();

		req.setAppCode(appCode);
		req.setCustomerCode(customerCode);
		req.setArch(HWInfo.getArch());
		req.setCrcLogo(getCrcLogo());
		req.setMacAddresses(HWInfo.getMACAddress());
		req.setOsName(HWInfo.getOsName());

		return req;
	}

	private String getCrcLogo() {
		String logResource = "images/logo_customer.png";
		InputStream is = getClass().getClassLoader().getResourceAsStream(logResource);
		try {
			String shaLogo = LicUtils.sha256(IOUtils.toByteArray(is), LOGO_SECRET);
			return shaLogo;
		} catch (IOException e) {
			log.error("Customer logo was not found in classpath in " + logResource, e);
			return null;
		}
	}
}