package org.argeo.cli.fs;
   
   import java.net.URI;
   import java.net.URISyntaxException;
   import java.nio.file.Path;
   import java.nio.file.Paths;
   import java.util.List;
   
   import org.apache.commons.cli.CommandLine;
  import org.apache.commons.cli.Option;
  import org.apache.commons.cli.Options;
  import org.argeo.cli.CommandArgsException;
  import org.argeo.cli.DescribedCommand;
  import org.argeo.sync.SyncResult;
  
  public class FileSync implements DescribedCommand<SyncResult<Path>> {
  	final static Option deleteOption = Option.builder().longOpt("delete").desc("delete from target").build();
  	final static Option recursiveOption = Option.builder("r").longOpt("recursive").desc("recurse into directories")
  			.build();
  	final static Option progressOption = Option.builder().longOpt("progress").hasArg(false).desc("show progress")
  			.build();
  
  	@Override
  	public SyncResult<Path> apply(List<String> t) {
  		try {
  			CommandLine line = toCommandLine(t);
  			List<String> remaining = line.getArgList();
  			if (remaining.size() == 0) {
  				throw new CommandArgsException("There must be at least one argument");
  			}
  			URI sourceUri = new URI(remaining.get(0));
  			URI targetUri;
  			if (remaining.size() == 1) {
  				targetUri = Paths.get(System.getProperty("user.dir")).toUri();
  			} else {
  				targetUri = new URI(remaining.get(1));
  			}
  			boolean delete = line.hasOption(deleteOption.getLongOpt());
  			boolean recursive = line.hasOption(recursiveOption.getLongOpt());
  			PathSync pathSync = new PathSync(sourceUri, targetUri, delete, recursive);
  			return pathSync.call();
  		} catch (URISyntaxException e) {
  			throw new CommandArgsException(e);
  		}
  	}
  
  	@Override
  	public Options getOptions() {
  		Options options = new Options();
  		options.addOption(recursiveOption);
  		options.addOption(deleteOption);
  		options.addOption(progressOption);
  		return options;
  	}
  
  	@Override
  	public String getUsage() {
  		return "[source URI] [target URI]";
  	}
  
  	public static void main(String[] args) {
  		DescribedCommand.mainImpl(new FileSync(), args);
  //		Options options = new Options();
  //		options.addOption("r", "recursive", false, "recurse into directories");
  //		options.addOption(Option.builder().longOpt("progress").hasArg(false).desc("show progress").build());
  //
  //		CommandLineParser parser = new DefaultParser();
  //		try {
  //			CommandLine line = parser.parse(options, args);
  //			List<String> remaining = line.getArgList();
  //			if (remaining.size() == 0) {
  //				System.err.println("There must be at least one argument");
  //				printHelp(options);
  //				System.exit(1);
  //			}
  //			URI sourceUri = new URI(remaining.get(0));
  //			URI targetUri;
  //			if (remaining.size() == 1) {
  //				targetUri = Paths.get(System.getProperty("user.dir")).toUri();
  //			} else {
  //				targetUri = new URI(remaining.get(1));
  //			}
  //			PathSync pathSync = new PathSync(sourceUri, targetUri);
  //			pathSync.run();
  //		} catch (Exception exp) {
  //			exp.printStackTrace();
  //			printHelp(options);
  //			System.exit(1);
  //		}
  	}
  
  //	public static void printHelp(Options options) {
  //		HelpFormatter formatter = new HelpFormatter();
  //		formatter.printHelp("sync SRC [DEST]", options, true);
  //	}
  
  	@Override
  	public String getDescription() {
  		return "Synchronises files";
 	}
 
 }