/*
 * 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.model;

import com.google.common.collect.Lists;
import com.google.inject.Inject;
import com.google.inject.name.Named;
import com.google.jstestdriver.FileInfo;
import com.google.jstestdriver.ResponseStream;
import com.google.jstestdriver.hooks.ResourcePreProcessor;
import com.google.jstestdriver.util.StopWatch;

import java.util.Collections;
import java.util.List;
import java.util.Set;

/**
 * Factory the creation of {@link RunData}.
 * 
 * @author corbinrsmith@gmail.com (Cory Smith)
 *
 */
public class RunDataFactory {
  private final Set<FileInfo> fileSet;
  private final Set<ResourcePreProcessor> processors;
  private final List<FileInfo> tests;
  private final JstdTestCaseFactory testCaseFactory;
  private final List<FileInfo> plugins;
  private final StopWatch stopWatch;

  @Inject
  public RunDataFactory(@Named("fileSet") Set<FileInfo> fileSet,
                        @Named("tests") List<FileInfo> tests,
                        Set<ResourcePreProcessor> processors,
                        @Named("plugins") List<FileInfo> plugins,
                        JstdTestCaseFactory testCaseFactory,
                        StopWatch stopWatch) {
    this.fileSet = fileSet;
    this.tests = tests;
    this.processors = processors;
    this.plugins = plugins;
    this.testCaseFactory = testCaseFactory;
    this.stopWatch = stopWatch;
  }

  /**
   * Creates a rRunData from the fileSet and plugin hooks.
   * @return A new RunData for a test pass.
   */
  public RunData get() {
    stopWatch.start("Create RunData");
    try {
      List<FileInfo> processedDependencies = Lists.newLinkedList(fileSet);
      List<FileInfo> processedPlugins = Lists.newLinkedList(plugins);
      List<FileInfo> processedTests = Lists.newLinkedList(tests);
  
      for (ResourcePreProcessor processor : processors) {
        stopWatch.start(processor.toString());
        processedPlugins = processor.processPlugins(processedPlugins);
        processedTests = processor.processTests(processedTests);
        processedDependencies = processor.processDependencies(processedDependencies);
        stopWatch.stop(processor.toString());
      }
      return new RunData(Collections.<ResponseStream>emptyList(),
                         testCaseFactory.createCases(
                             processedPlugins,
                             processedDependencies,
                             processedTests),
                         testCaseFactory);
    } finally {
      stopWatch.stop("Create RunData");
    }
  }
}