/*
 * Copyright (c) Orchestral Developments Ltd and the Orion Health group of companies (2001 - 2018).
 *
 * This document is copyright. Except for the purpose of fair reviewing, no part
 * of this publication may be reproduced or transmitted in any form or by any
 * means, electronic or mechanical, including photocopying, recording, or any
 * information storage and retrieval system, without permission in writing from
 * the publisher. Infringers of copyright render themselves liable for
 * prosecution.
 */
package com.orchestral.releasemanagement.compatibilitymanager;

import java.io.IOException;
import java.util.Properties;

import org.apache.commons.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Credentials {
    private static final Logger LOGGER = LoggerFactory.getLogger(Credentials.class);
    private static final String LDAP_CONFIG_FILE = "ldap-credentials.properties";

    private final String USERNAME;
    private final String PASSWORD;
    private final String BASIC_AUTHENTICATION;

    private Credentials() {
        LOGGER.debug("Creating new instance of Credentials");
        Properties properties = null;
        try {
            properties = PropertiesHelper.load(LDAP_CONFIG_FILE);
        } catch (final IOException e) {
            LOGGER.error("Couldn't load credentials properties file: {}", LDAP_CONFIG_FILE);
            e.printStackTrace();
            System.exit(1);
        }
        this.USERNAME = properties.getProperty("username", "");
        this.PASSWORD = properties.getProperty("password", "");
        this.BASIC_AUTHENTICATION = new String(Base64.encodeBase64((this.USERNAME + ":" + this.PASSWORD).getBytes()));
        LOGGER.debug("Credentials object has been created");
    }

    private static class CredentialsHolder {
        private static final Credentials INSTANCE = new Credentials();
    }

    public static Credentials getInstance() {
        return CredentialsHolder.INSTANCE;
    }

    public String getUsername() {
        return this.USERNAME;
    }

    public String getPassword() {
        return this.PASSWORD;
    }

    public String getHttpBasicAuthentication() {
        return this.BASIC_AUTHENTICATION;
    }

    private Credentials(final String configFileName) {
        Properties properties = null;
        try {
            properties = PropertiesHelper.load(configFileName);
        } catch (final IOException e) {
            LOGGER.error("Couldn't load credentials properties file: {}", configFileName);
            e.printStackTrace();
            System.exit(1);
        }

        this.USERNAME = properties.getProperty("username", "");
        this.PASSWORD = properties.getProperty("password", "");
        this.BASIC_AUTHENTICATION = new String(Base64.encodeBase64((this.USERNAME + ":" + this.PASSWORD).getBytes()));
    }
}