package com.atlassian.plugin.loaders;
   
   import java.io.File;
   import java.io.IOException;
   import java.net.URI;
   import java.util.List;
   
   import com.atlassian.plugin.JarPluginArtifact;
   import com.atlassian.plugin.ModuleDescriptorFactory;
  import com.atlassian.plugin.Plugin;
  import com.atlassian.plugin.PluginArtifact;
  import com.atlassian.plugin.PluginArtifactFactory;
  import com.atlassian.plugin.event.PluginEventManager;
  import com.atlassian.plugin.factories.PluginFactory;
  
  import com.google.common.collect.ImmutableList;
  
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.contrib.java.lang.system.RestoreSystemProperties;
  import org.junit.runner.RunWith;
  import org.mockito.ArgumentCaptor;
  import org.mockito.Captor;
  import org.mockito.Mock;
  import org.mockito.runners.MockitoJUnitRunner;
  
  import static com.atlassian.plugin.loaders.RosterFilePluginLoader.getReferenceModePropertyName;
  import static com.atlassian.plugin.loaders.TestRosterFileScanner.backdateFile;
  import static com.atlassian.plugin.loaders.TestRosterFileScanner.writeRosterFile;
  import static com.atlassian.plugin.test.Matchers.uriWithPath;
  import static com.atlassian.plugin.test.PluginTestUtils.createTempDirectory;
  import static com.google.common.collect.Iterables.getOnlyElement;
  import static org.apache.commons.io.FileUtils.deleteQuietly;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.contains;
  import static org.hamcrest.Matchers.instanceOf;
  import static org.hamcrest.Matchers.is;
  import static org.mockito.Matchers.any;
  import static org.mockito.Matchers.argThat;
  import static org.mockito.Matchers.same;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @RunWith (MockitoJUnitRunner.class)
  public class TestRosterFilePluginLoader
  {
      @Rule
      public RestoreSystemProperties restoreSystemProperties = new RestoreSystemProperties(getReferenceModePropertyName());
  
      @Mock private PluginFactory pluginFactory;
      @Mock private PluginArtifactFactory pluginArtifactFactory;
      @Mock private PluginEventManager pluginEventManager;
      @Mock private ModuleDescriptorFactory moduleDescriptorFactory;
  
      @Captor private ArgumentCaptor<PluginArtifact> pluginArtifactCaptor;
  
      private File temporaryDirectory;
      private File rosterFile;
      private List<PluginFactory> pluginFactories;
  
      RosterFilePluginLoader rosterFilePluginLoader;
  
      @Before
      public void setUp() throws Exception
      {
          temporaryDirectory = createTempDirectory(TestRosterFilePluginLoader.class);
          rosterFile = new File(temporaryDirectory, "rosterFile.list");
          pluginFactories = ImmutableList.of(pluginFactory);
          rosterFilePluginLoader = new RosterFilePluginLoader(rosterFile, pluginFactories, pluginArtifactFactory, pluginEventManager);
      }
  
      @After
      public void tearDown() throws Exception
      {
          deleteQuietly(temporaryDirectory);
      }
  
      @Test
      public void rosterFileUsedToLoadAllPlugins() throws Exception
      {
          final String pluginKey = "someKey";
          final String jarName = "somePlugin.jar";
          final File jarFile = getOnlyElement(writeRosterFile(rosterFile, jarName));
          final PluginArtifact pluginArtifact = mock(PluginArtifact.class);
          final Plugin plugin = mock(Plugin.class);
  
          final ArgumentCaptor<URI> uriCaptor = ArgumentCaptor.forClass(URI.class);
          when(pluginArtifactFactory.create(uriCaptor.capture())).thenReturn(pluginArtifact);
          configurePluginFactory(pluginKey, plugin, pluginArtifact);
  
          final Iterable<Plugin> plugins = rosterFilePluginLoader.loadAllPlugins(moduleDescriptorFactory);
  
          assertThat(plugins, contains(plugin));
          final URI uri = uriCaptor.getValue();
          assertThat(uri, uriWithPath(jarFile.getPath()));
          verify(pluginFactory).canCreate(pluginArtifact);
     }
 
     @Test
     public void removePluginResultsInPluginUninstall() throws Exception
     {
         final String pluginKey = "someKey";
         final String oldJarName = "oldPlugin.jar";
         final File oldJarFile = getOnlyElement(writeRosterFile(rosterFile, oldJarName));
         // Since we need to scan again, backdate the file to ensure it appears new when rewritten
         backdateFile(rosterFile);
         final PluginArtifact oldPluginArtifact = mock(PluginArtifact.class);
         final Plugin oldPlugin = mock(Plugin.class);
         when(oldPlugin.isUninstallable()).thenReturn(true);
 
         when(pluginArtifactFactory.create(argThat(uriWithPath(oldJarFile.getPath())))).thenReturn(oldPluginArtifact);
         configurePluginFactory(pluginKey, oldPlugin, oldPluginArtifact);
 
         rosterFilePluginLoader.loadAllPlugins(moduleDescriptorFactory);
 
         final String newJarName = "newPlugin.jar";
         writeRosterFile(rosterFile, newJarName);
 
         // The plugin system calls PluginLoader#removePlugin when upgrading plugins, so it has to work in this scenario
         rosterFilePluginLoader.loadFoundPlugins(moduleDescriptorFactory);
         rosterFilePluginLoader.removePlugin(oldPlugin);
 
         verify(oldPlugin).uninstall();
     }
 
     @Test
     public void defaultRosterFilePluginLoaderForbidsReference() throws Exception
     {
         final JarPluginArtifact jarPluginArtifact = obtainPluginArtifactFromRosterFilesDefaultFactory();
 
         assertThat(jarPluginArtifact.allowsReference(), is(false));
     }
 
     @Test
     public void propertyCanSetRosterFilePluginLoaderToAllowReference() throws Exception
     {
         System.setProperty(getReferenceModePropertyName(), "PERMIT_REFERENCE");
         final JarPluginArtifact jarPluginArtifact = obtainPluginArtifactFromRosterFilesDefaultFactory();
 
         assertThat(jarPluginArtifact.allowsReference(), is(true));
     }
 
 
     private JarPluginArtifact obtainPluginArtifactFromRosterFilesDefaultFactory() throws IOException
     {
         final String pluginKey = "someKey";
         final String jarName = "oldPlugin.jar";
         final Plugin plugin = mock(Plugin.class);
 
         writeRosterFile(rosterFile, jarName);
         when(pluginFactory.canCreate(any(PluginArtifact.class))).thenReturn(pluginKey);
         when(pluginFactory.create(pluginArtifactCaptor.capture(), same(moduleDescriptorFactory))).thenReturn(plugin);
 
         rosterFilePluginLoader = new RosterFilePluginLoader(rosterFile, pluginFactories, pluginEventManager);
         rosterFilePluginLoader.loadAllPlugins(moduleDescriptorFactory);
 
         final PluginArtifact pluginArtifact = pluginArtifactCaptor.getValue();
         assertThat(pluginArtifact, instanceOf(JarPluginArtifact.class));
         return  (JarPluginArtifact) pluginArtifact;
     }
 
     private void configurePluginFactory(final String pluginKey, final Plugin plugin, final PluginArtifact pluginArtifact)
     {
         when(pluginFactory.canCreate(pluginArtifact)).thenReturn(pluginKey);
         when(pluginFactory.create(pluginArtifact, moduleDescriptorFactory)).thenReturn(plugin);
     }
 }