net.hillsdon.reviki.web.urls.impl.ApplicationUrlsImpl.java Source code

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Here is the source code for net.hillsdon.reviki.web.urls.impl.ApplicationUrlsImpl.java

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/**
 * Copyright 2008 Matthew Hillsdon
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.hillsdon.reviki.web.urls.impl;

import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import net.hillsdon.reviki.configuration.DeploymentConfiguration;
import net.hillsdon.reviki.configuration.WikiConfiguration;
import net.hillsdon.reviki.web.urls.ApplicationUrls;
import net.hillsdon.reviki.web.urls.WikiUrls;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;

/**
 * Determines base URL from the request.
 *
 * @author mth
 */
public class ApplicationUrlsImpl implements ApplicationUrls {

    private static String getBaseUrl(final HttpServletRequest request) {
        String requestURL = request.getRequestURL().toString();
        String path = request.getRequestURI().substring(request.getContextPath().length());
        String base = requestURL.substring(0, requestURL.length() - path.length());
        return base;
    }

    private final String _base;
    private final DeploymentConfiguration _deploymentConfiguration;

    public ApplicationUrlsImpl(final HttpServletRequest request,
            final DeploymentConfiguration deploymentConfiguration) {
        this(getBaseUrl(request), deploymentConfiguration);
    }

    public ApplicationUrlsImpl(final String base, final DeploymentConfiguration deploymentConfiguration) {
        _base = base;
        _deploymentConfiguration = deploymentConfiguration;
    }

    public WikiUrls get(final String name) {
        return new WikiUrlsImpl(this, _deploymentConfiguration.getConfiguration(name));
    }

    public String list() {
        return url("/list");
    }

    public String url(final String relative) {
        return _base + relative;
    }

    public String resource(final String path) {
        return url("/resources/" + path);
    }

    public Set<WikiUrls> getAvailableWikiUrls() {
        return Sets.newLinkedHashSet(Iterables.transform(_deploymentConfiguration.getWikis(),
                new Function<WikiConfiguration, WikiUrls>() {
                    public WikiUrls apply(final WikiConfiguration wiki) {
                        return get(wiki.getWikiName());
                    }
                }));
    }

}