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package uk.co.javahelp.maven.plugin.fitnesse.main;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;

import org.apache.maven.plugin.MojoExecutionException;

import fitnesse.Arguments;
import fitnesse.ComponentFactory;
import fitnesse.FitNesse;
import fitnesse.FitNesseContext;
import fitnesse.FitNesseContext.Builder;
import fitnesse.Updater;
import fitnesse.WikiPageFactory;
import fitnesse.authentication.Authenticator;
import fitnesse.authentication.MultiUserAuthenticator;
import fitnesse.authentication.OneUserAuthenticator;
import fitnesse.authentication.PromiscuousAuthenticator;
import fitnesse.components.Logger;
import fitnesse.components.PluginsClassLoader;
import fitnesse.responders.WikiImportTestEventListener;
import fitnesse.responders.run.formatters.TestTextFormatter;
import fitnesse.wiki.PageVersionPruner;

/**
 * Copied from {@link fitnesseMain.FitNesseMain} and altered to return boolean status of {@link fitnesse.FitNesse#start()}.
 */
public class FitNesseMain {
   private static String extraOutput;
   public static boolean dontExitAfterSingleCommand;

   /*
    * public static void main(String[] args) throws Exception { Arguments arguments = fitnesseMain.FitNesseMain.parseCommandLine(args); if (arguments != null) {
    * launchFitNesse(arguments); } else { printUsage(); System.exit(1); } }
    */

   public static FitNesse launchFitNesse( Arguments arguments ) throws Exception {
      loadPlugins();
      FitNesseContext context = loadContext( arguments );
      Updater updater = null;
      // if (!arguments.isOmittingUpdates())
      // updater = new UpdaterImplementation(context);
      PageVersionPruner.daysTillVersionsExpire = arguments.getDaysTillVersionsExpire();
      FitNesse fitnesse = new FitNesse( context, updater );
      // update(arguments, fitnesse);
      if( !launch( arguments, context, fitnesse ) ) {
         throw new MojoExecutionException( "FitNesse could not be launched" );
      }
      return fitnesse;
   }

   private static void loadPlugins() throws Exception {
      new PluginsClassLoader().addPluginsToClassLoader();
   }

   /*
    * static void update(Arguments arguments, FitNesse fitnesse) throws Exception { if (!arguments.isOmittingUpdates()) fitnesse.applyUpdates(); }
    */

   static boolean launch( Arguments arguments, FitNesseContext context, FitNesse fitnesse ) throws Exception {
      // if (!arguments.isInstallOnly()) {
      boolean started = fitnesse.start();
      if( started ) {
         printStartMessage( arguments, context );
         if( arguments.getCommand() != null ) {
            executeSingleCommand( arguments, fitnesse, context );
         }
      }
      return started;
      // }
      // return false;
   }

   private static void executeSingleCommand( Arguments arguments, FitNesse fitnesse, FitNesseContext context ) throws Exception {
      TestTextFormatter.finalErrorCount = 0;
      System.out.println( "Executing command: " + arguments.getCommand() );

      OutputStream os;

      boolean outputRedirectedToFile = arguments.getOutput() != null;

      if( outputRedirectedToFile ) {
         System.out.println( "-----Command Output redirected to " + arguments.getOutput() + "-----" );
         os = new FileOutputStream( arguments.getOutput() );
      }else{
         System.out.println( "-----Command Output-----" );
         os = System.out;
      }

      fitnesse.executeSingleCommand( arguments.getCommand(), os );
      fitnesse.stop();

      if( outputRedirectedToFile ) {
         os.close();
      }else{
         System.out.println( "-----Command Complete-----" );
      }

      if( shouldExitAfterSingleCommand() ) {
         System.exit( TestTextFormatter.finalErrorCount );
      }
   }

   private static boolean shouldExitAfterSingleCommand() {
      return !dontExitAfterSingleCommand;
   }

   private static FitNesseContext loadContext( Arguments arguments ) throws Exception {
      Builder builder = new Builder();
      WikiPageFactory wikiPageFactory = new WikiPageFactory();
      ComponentFactory componentFactory = new ComponentFactory( arguments.getRootPath() );

      builder.port = arguments.getPort();
      builder.rootPath = arguments.getRootPath();
      builder.rootDirectoryName = arguments.getRootDirectory();

      builder.pageTheme = componentFactory.getProperty( ComponentFactory.THEME );
      builder.defaultNewPageContent = componentFactory.getProperty( ComponentFactory.DEFAULT_NEWPAGE_CONTENT );

      builder.root = wikiPageFactory.makeRootPage( builder.rootPath, builder.rootDirectoryName, componentFactory );

      builder.logger = makeLogger( arguments );
      builder.authenticator = makeAuthenticator( arguments.getUserpass(), componentFactory );

      FitNesseContext context = builder.createFitNesseContext();

      extraOutput = componentFactory.loadPlugins( context.responderFactory, wikiPageFactory );
      extraOutput += componentFactory.loadWikiPage( wikiPageFactory );
      extraOutput += componentFactory.loadResponders( context.responderFactory );
      extraOutput += componentFactory.loadSymbolTypes();
      extraOutput += componentFactory.loadContentFilter();
      extraOutput += componentFactory.loadSlimTables();

      WikiImportTestEventListener.register();

      return context;
   }

   /*
    * public static Arguments parseCommandLine(String[] args) { CommandLine commandLine = new CommandLine(
    * "[-p port][-d dir][-r root][-l logDir][-e days][-o][-i][-a userpass][-c command][-b output]"); Arguments arguments = null; if (commandLine.parse(args)) {
    * arguments = new Arguments(); if (commandLine.hasOption("p")) arguments.setPort(commandLine.getOptionArgument("p", "port")); if
    * (commandLine.hasOption("d")) arguments .setRootPath(commandLine.getOptionArgument("d", "dir")); if (commandLine.hasOption("r"))
    * arguments.setRootDirectory(commandLine.getOptionArgument("r", "root")); if (commandLine.hasOption("l"))
    * arguments.setLogDirectory(commandLine.getOptionArgument("l", "logDir")); if (commandLine.hasOption("e")) arguments.setDaysTillVersionsExpire(commandLine
    * .getOptionArgument("e", "days")); if (commandLine.hasOption("a")) arguments.setUserpass(commandLine.getOptionArgument("a", "userpass")); if
    * (commandLine.hasOption("c")) arguments.setCommand(commandLine.getOptionArgument("c", "command")); if (commandLine.hasOption("b"))
    * arguments.setOutput(commandLine .getOptionArgument("b", "output")); arguments.setOmitUpdates(commandLine.hasOption("o"));
    * arguments.setInstallOnly(commandLine.hasOption("i")); } return arguments; }
    */

   private static Logger makeLogger( Arguments arguments ) {
      String logDirectory = arguments.getLogDirectory();
      return logDirectory != null ? new Logger( logDirectory ) : null;
   }

   public static Authenticator makeAuthenticator( String authenticationParameter, ComponentFactory componentFactory ) throws Exception {
      Authenticator authenticator = new PromiscuousAuthenticator();
      if( authenticationParameter != null ) {
         if( new File( authenticationParameter ).exists() )
            authenticator = new MultiUserAuthenticator( authenticationParameter );
         else{
            String[] values = authenticationParameter.split( ":" );
            authenticator = new OneUserAuthenticator( values[0], values[1] );
         }
      }

      return componentFactory.getAuthenticator( authenticator );
   }

   /*
    * private static void printUsage() { System.err.println("Usage: java -jar fitnesse.jar [-pdrleoab]"); System.err.println("\t-p  {" +
    * Arguments.DEFAULT_PORT + "}"); System.err.println("\t-d  {" + Arguments.DEFAULT_PATH + "}"); System.err.println(
    * "\t-r  {" + Arguments.DEFAULT_ROOT + "}"); System.err.println("\t-l  {no logging}"); System.err.println(
    * "\t-e  {" + Arguments.DEFAULT_VERSION_DAYS + "} Number of days before page versions expire"); System.err.println("\t-o omit updates"); System.err
    * .println("\t-a {user:pwd | user-file-name} enable authentication."); System.err.println("\t-i Install only, then quit."); System.err.println(
    * "\t-c  execute single command."); System.err.println("\t-b  redirect command output."); }
    */

   private static void printStartMessage( Arguments args, FitNesseContext context ) {
      System.out.println( "FitNesse (" + FitNesse.VERSION + ") Started..." );
      System.out.print( context.toString() );
      System.out.println( "\tpage version expiration set to " + args.getDaysTillVersionsExpire() + " days." );
      if( extraOutput != null )
         System.out.print( extraOutput );
   }
}