/*
    * Copyright 2013 smartics, Kronseder & Reiner GmbH
    *
    * 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 de.smartics.properties.admin.resources.representation.html;
  
  import static de.smartics.properties.admin.domain.model.AppRelations.CONFIGURATION;
  
  import java.io.OutputStream;
  import java.net.URI;
  import java.util.List;
  
  import de.smartics.html5.jatl.HtmlResourceContext;
  import de.smartics.properties.admin.domain.model.ConfigurationKeys;
  import de.smartics.properties.admin.domain.model.Paths;
  import de.smartics.properties.admin.domain.model.Roles;
  import de.smartics.properties.admin.resources.controller.PropertyKeysResource;
  import de.smartics.properties.admin.resources.representation.html.share.AbstractHtmlRepresentationRenderer;
  import de.smartics.properties.admin.resources.representation.html.share.ApplicationHtmlRenderingHelper;
  import de.smartics.properties.api.config.domain.key.ConfigurationKey;
  import de.smartics.resteasy.hypermedia.renderer.LinkDescriptor;
  
  /**
   * Displays the list of configuration keys in an HTML page.
   */
  public final class ConfigurationKeysHtmlRepresentationRenderer extends
      AbstractHtmlRepresentationRenderer<ConfigurationKeys>
  {
    // ********************************* Fields *********************************
  
    // --- constants ------------------------------------------------------------
  
    /**
     * The title to the page.
     */
    private static final String TITLE = "Configuration Keys";
  
    // --- members --------------------------------------------------------------
  
    /**
     * The domain object to render.
     */
    private final ConfigurationKeys domainObject;
  
    // ****************************** Initializer *******************************
  
    // ****************************** Constructors ******************************
  
    /**
     * Default constructor.
     *
     * @param htmlContext the context information to render the representation.
     * @param domainObject the domain object to render.
     * @param entityStream the stream to write to.
     */
    public ConfigurationKeysHtmlRepresentationRenderer(
        final HtmlResourceContext htmlContext,
        final ConfigurationKeys domainObject, final OutputStream entityStream)
    {
      super(htmlContext, entityStream);
      this.domainObject = domainObject;
    }
  
    // ****************************** Inner Classes *****************************
  
    // ********************************* Methods ********************************
  
    // --- init -----------------------------------------------------------------
  
    // --- get&set --------------------------------------------------------------
  
    // --- business -------------------------------------------------------------
  
    @Override
    protected void bodyContents()
    {
      renderPageTitle(">>>");
      html.p()
          .text(
              "The following list shows the keys to configurations available"
                  + " to the application with the attached data source.").end();
      final ApplicationHtmlRenderingHelper helper =
          new ApplicationHtmlRenderingHelper(html, pathHelper,
              domainObject.getApplication());
      helper.addApplication();
  
      if(htmlContext.getContext().isUserInRole(Roles.CREATE_CONFIG))
      {
       renderNewConfigurationForm();
       html.hr().end();
     }
 
     html.div().classAttr("alert alert-info");
     html.button().type("button").classAttr("close").attr("data-dismiss", "alert").raw("&times;").end();
     html.h4().text("Secured Values").end();
     html.text("Please note that secured values are displayed in plain text.");
     html.end();
 
     renderKeys();
   }
 
   private void renderNewConfigurationForm()
   {
     html.form().classAttr("form-inline").method("POST");
 
     html.fieldset().legend().text("Create new configuration").end();
     createInputField();
     createSubmitButton();
     createHelp();
     html.end();
 
     html.end();
   }
 
   private void createInputField()
   {
     html.input().type("text").id(Paths.PARAM_CONFIGURATION_KEY)
         .name(Paths.PARAM_CONFIGURATION_KEY).classAttr("input-xlarge");
     // TODO: derive format from configuration ...
     html.attr("placeholder", "//:/::");
     html.end();
   }
 
   private void createSubmitButton()
   {
     html.button().type("submit").id("submit")
         .classAttr("btn btn-mini btn-default");
     html.text("create").end();
   }
 
   private void createHelp()
   {
     // TODO: derive format from configuration ...
     html.div()
         .small()
         .text(
             "Pattern: /{user}/{tenant}/{env}:{node}/{app-group}:{app-id}:{version}")
         .end().end();
     html.p()
         .small()
         .text(
             "Please consult the documentation of the selected key format to be"
                 + " informed, which values are allowed.").end().end();
   }
 
   private void renderKeys()
   {
     html.ol();
     for (final ConfigurationKey<?> key : domainObject.getKeys())
     {
       final URI url =
           htmlContext.getContext().getUriInfo().getBaseUriBuilder()
               .path(PropertyKeysResource.class, "getAsHtml")
               .build(new Object[] { key.toString() }, false);
 
       final String keyString = key.toString();
       html.li().a().id(keyString).rel(CONFIGURATION).href(url.toString())
           .text(keyString).end().end();
     }
 
     html.end();
   }
 
   @Override
   protected String getTitle()
   {
     return TITLE;
   }
 
   @Override
   protected List<LinkDescriptor> breadcrumbLinks()
   {
     return breadcrumb.configurations();
   }
 
   // --- object basics --------------------------------------------------------
 
 }