improve plugin detail view

scm-plugin-backend/src/main/java/sonia/scm/plugin/rest/DetailResource.java

@@ -0,0 +1,176 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.plugin.rest;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.inject.Inject;
+
+import sonia.scm.plugin.PluginBackend;
+import sonia.scm.plugin.PluginFilter;
+import sonia.scm.plugin.PluginInformation;
+import sonia.scm.util.Util;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import com.sun.jersey.api.view.Viewable;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.Response.Status;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+@Path("/detail/{groupId}/{artifactId}.html")
+public class DetailResource
+{
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param backend
+   */
+  @Inject
+  public DetailResource(PluginBackend backend)
+  {
+    this.backend = backend;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param groupId
+   * @param artifactId
+   *
+   * @return
+   */
+  @GET
+  public Viewable getPluginDetails(@PathParam("groupId") String groupId,
+                                   @PathParam("artifactId") String artifactId)
+  {
+    List<PluginInformation> pluginVersions = getPluginVersions(groupId,
+                                               artifactId);
+
+    if (Util.isEmpty(pluginVersions))
+    {
+      throw new WebApplicationException(Status.NOT_FOUND);
+    }
+
+    Collections.sort(pluginVersions, PluginInformationComparator.INSTANCE);
+    pluginVersions = filterSameVersions(pluginVersions);
+
+    Map<String, Object> vars = new HashMap<String, Object>();
+
+    vars.put("latest", pluginVersions.get(0));
+    vars.put("versions", pluginVersions);
+
+    return new Viewable("/detail", vars);
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param plugins
+   *
+   * @return
+   */
+  private List<PluginInformation> filterSameVersions(
+          List<PluginInformation> plugins)
+  {
+    List<PluginInformation> filteredPlugins =
+      new ArrayList<PluginInformation>();
+    String version = "";
+
+    for (PluginInformation plugin : plugins)
+    {
+      if (!version.equals(plugin.getVersion()))
+      {
+        version = plugin.getVersion();
+        filteredPlugins.add(plugin);
+      }
+    }
+
+    return filteredPlugins;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param groupId
+   * @param artifactId
+   *
+   * @return
+   */
+  private List<PluginInformation> getPluginVersions(final String groupId,
+          final String artifactId)
+  {
+    List<PluginInformation> pluginVersions =
+      backend.getPlugins(new PluginFilter()
+    {
+      @Override
+      public boolean accept(PluginInformation plugin)
+      {
+        return groupId.equals(plugin.getGroupId())
+               && artifactId.equals(plugin.getArtifactId());
+      }
+    });
+
+    return pluginVersions;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private PluginBackend backend;
+}