/*
 * Copyright 2010 Google Inc.
 * 
 * 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.google.jstestdriver.server.handlers;

import com.google.gson.Gson;
import com.google.inject.Inject;
import com.google.jstestdriver.FilesCache;
import com.google.jstestdriver.JsonCommand;
import com.google.jstestdriver.JsonCommand.CommandType;
import com.google.jstestdriver.SlaveBrowser;
import com.google.jstestdriver.model.HandlerPathPrefix;
import com.google.jstestdriver.requesthandlers.RequestHandler;
import com.google.jstestdriver.runner.RunnerType;
import com.google.jstestdriver.server.handlers.pages.Page;
import com.google.jstestdriver.server.handlers.pages.PageType;
import com.google.jstestdriver.server.handlers.pages.SlavePageRequest;
import com.google.jstestdriver.util.HtmlWriter;

import org.mortbay.jetty.MimeTypes;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.LinkedList;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

/**
 * Handler for the browser controlled test running mode.
 *
 * @author corbinrsmith@gmail.com (Cory Smith)
 */
public class BrowserControlledRunnerHandler implements RequestHandler {

  private static final Logger logger =
      LoggerFactory.getLogger(BrowserControlledRunnerHandler.class);

  private final Gson gson = new Gson();
  private final SlavePageRequest request;
  private final HttpServletResponse response;

  private final HandlerPathPrefix prefix;

  private final Map<PageType, Page> pages;

  @Inject
  public BrowserControlledRunnerHandler(
      SlavePageRequest request,
      HttpServletResponse response,
      HandlerPathPrefix prefix,
      Map<PageType, Page> pages) {
    this.request = request;
    this.response = response;
    this.prefix = prefix;
    this.pages = pages;
  }

  @Override
  public void handleIt() throws IOException {
    final SlaveBrowser browser = request.getBrowser();
    if (browser == null) {
      // re-capture browser as standalone
      response.sendRedirect(
          prefix.prefixPath("/capture/" + CaptureHandler.RUNNER_TYPE + "/" + RunnerType.BROWSER + "/timeout/-1"));
    } else {
      browser.heartBeat();
      // start test running
      response.setContentType(MimeTypes.TEXT_HTML_UTF_8);
      final HtmlWriter writer = new HtmlWriter(response.getWriter(), prefix);
      request.writeDTD(writer);
      pages.get(request.getPageType()).render(writer, request);
      service(browser);
      writer.flush();
    }
  }

  public void service(final SlaveBrowser slaveBrowser) {
    logger.debug("Adding noop command.");
    slaveBrowser.createCommand(gson.toJson(new JsonCommand(CommandType.NOOP, null)));
    LinkedList<String> runAllTestsParameters = new LinkedList<String>();

    runAllTestsParameters.add("false");
    runAllTestsParameters.add("false");
    runAllTestsParameters.add("0");
    logger.debug("adding run all tests command.");
    slaveBrowser.createCommand(gson.toJson(new JsonCommand(CommandType.RUNALLTESTS,
        runAllTestsParameters)));
    // stop the executor until the next refresh.
    slaveBrowser.createCommand(gson.toJson(new JsonCommand(CommandType.STOP, null)));
    
  }
}