/**

* Copyright (C) 2004-2016, GoodData(R) Corporation. All rights reserved.

* This source code is licensed under the BSD-style license found in the

* LICENSE.txt file in the root directory of this source tree.

*/

package com.gooddata;

import org.springframework.web.util.UriComponentsBuilder;

import java.net.URI;

import static com.gooddata.util.Validate.notEmpty;

import static com.gooddata.util.Validate.notNull;

import static org.springframework.util.StringUtils.trimLeadingCharacter;

/**

* Used internally by GoodData SDK to hold and set URI prefix (hostname and port) of all requests.

*/

public class UriPrefixer {

private final URI uriPrefix;

/**

* Construct URI prefixer using given URI prefix (just hostname and port is used)

*

* @param uriPrefix the URI prefix

*/

public UriPrefixer(URI uriPrefix) {

this.uriPrefix = notNull(uriPrefix, "uriPrefix");

}

/**

* Construct URI prefixer using given URI prefix (just hostname and port is used)

*

* @param uriPrefix the URI prefix string

*/

public UriPrefixer(String uriPrefix) {

this(URI.create(uriPrefix));

}

/**

* Get the URI prefix

*

* @return the URI prefix

*/

public URI getUriPrefix() {

return uriPrefix;

}

/**

* Return merged URI prefix (hostname and port) with the given URI (path, query, and fragment URI parts)

*

* @param uri the URI its parts (path, query, and fragment) will be merged with URI prefix

* @return the merged URI

*/

public URI mergeUris(URI uri) {

notNull(uri, "uri");

final String path = trimLeadingCharacter(uri.getRawPath(), '/');

return UriComponentsBuilder.fromUri(uriPrefix)

.pathSegment(path)

.query(uri.getRawQuery())

.fragment(uri.getRawFragment())

.build().toUri();

}

/**

* Return merged URI prefix (hostname and port) with the given URI string (path, query, and fragment URI parts)

*

* @param uri the URI string its parts (path, query, and fragment) will be merged with URI prefix

* @return the merged URI

*/

public URI mergeUris(String uri) {

notEmpty(uri, "uri");

return mergeUris(URI.create(uri));

}

}