/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.keycloak.social;

import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLEncoder;

/**
 * @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
 */
public class UriBuilder {

    private StringBuilder sb;

    private char sep;

    public static UriBuilder create(String path) {
        StringBuilder sb = new StringBuilder();
        sb.append(path);

        UriBuilder builder = new UriBuilder();
        builder.sb = sb;
        return builder;
    }

    public UriBuilder setQueryParam(String name, String value) {
        try {
            if (sep == '?') {
                sb.append(sep);
                sep = '&';
            } else {
                sb.append(sep);
            }
            sb.append(URLEncoder.encode(name, "UTF-8"));
            sb.append("=");
            sb.append(URLEncoder.encode(value, "UTF-8"));
            return this;
        } catch (UnsupportedEncodingException e) {
            throw new IllegalStateException(e);
        }
    }

    public URI build() {
        try {
            return new URI(sb.toString());
        } catch (URISyntaxException e) {
            throw new IllegalArgumentException(e);
        }
    }

}
