/*
    * Copyright (C) 2013 Atlassian
    *
    * 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 com.atlassian.jira.rest.client.test.matchers;
  
  import org.hamcrest.Description;
  import org.junit.internal.matchers.TypeSafeMatcher;
  
  import java.net.URI;
  import java.util.regex.Pattern;
  
  public class UriRegularExpressionMatcher extends TypeSafeMatcher<URI> {
      private final URI baseUri;
      private final Pattern pattern;
  
      public UriRegularExpressionMatcher(final URI baseUri, final Pattern pattern) {
          this.baseUri = baseUri;
          this.pattern = pattern;
      }
  
      public static UriRegularExpressionMatcher uriMatchesRegexp(final URI baseUri, final Pattern pattern) {
          return new UriRegularExpressionMatcher(baseUri, pattern);
      }
  
      public static UriRegularExpressionMatcher uriMatchesRegexp(final URI baseUri, final String pattern) {
          return new UriRegularExpressionMatcher(baseUri, Pattern.compile(pattern));
      }
  
      @Override
      public boolean matchesSafely(URI given) {
          return checkBaseUri(given) && checkPattern(given);
      }
  
      private boolean checkPattern(URI given) {
          final URI relativeUrl = baseUri.relativize(given);
          return pattern.matcher(relativeUrl.toString()).matches();
      }
  
      private boolean checkBaseUri(URI given) {
          return given.toString().startsWith(baseUri.toString());
      }
  
      @Override
      public void describeTo(Description description) {
          description.appendText(String.format("url with base %s and matching regular expression %s", baseUri, pattern));
      }
  }