package com.jetbrains.teamcity.command;

import com.jetbrains.teamcity.*;
import com.jetbrains.teamcity.resources.TCAccess;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.MessageFormat;
import javax.naming.directory.InvalidAttributesException;
import jetbrains.buildServer.core.runtime.IProgressMonitor;

public class Login implements ICommand {

  private static final String ID = Messages.getString("Login.command.id"); //$NON-NLS-1$

  private String myResultDescription;

  public void execute(Server nullServer, Args args, final IProgressMonitor monitor) throws EAuthorizationException, ECommunicationException, ERemoteError, InvalidAttributesException {
    final String url = args.getArgument(CommandRunner.HOST_ARG);
    final String user = getUser(args);
    final String password = getPassword(args);
    // try to login
    Server server = null;
    try {
      server = new Server(new URL(url));
      monitor.beginTask(MessageFormat.format(Messages.getString("CommandRunner.connecting.step.name"), url)); //$NON-NLS-1$
      server.connect();
      monitor.done();
      monitor.beginTask(Messages.getString("CommandRunner.logging.step.name")); //$NON-NLS-1$
      server.logon(user, password);
      monitor.done();
      // ok. let's store
      TCAccess.getInstance().setCredential(url, user, password);
      myResultDescription = MessageFormat.format(Messages.getString("Login.result.ok.pattern"), user); //$NON-NLS-1$
    }
    catch (MalformedURLException e) {
      throw new IllegalArgumentException(e);
    }
    finally {
      if (server != null) {
        server.dispose();
      }
    }
  }

  public void validate(Args args) throws IllegalArgumentException {
    if (!args.hasArgument(CommandRunner.HOST_ARG)) {
      throw new IllegalArgumentException(MessageFormat.format("missing {0}", CommandRunner.HOST_ARG));
    }
  }

  private String getPassword(Args args) {
    if (args.hasArgument(CommandRunner.PASSWORD_ARG)) {
      return args.getArgument(CommandRunner.PASSWORD_ARG);
    } else {
      return Util.readConsoleInput(Messages.getString("Login.password.prompt"), true); //$NON-NLS-1$
    }
  }

  private String getUser(Args args) {
    if (args.hasArgument(CommandRunner.USER_ARG)) {
      return args.getArgument(CommandRunner.USER_ARG);
    } else {
      return Util.readConsoleInput(Messages.getString("Login.username.prompt"), false); //$NON-NLS-1$
    }
  }

  public String getCommandDescription() {
    return Messages.getString("Login.help.description"); //$NON-NLS-1$
  }

  public String getId() {
    return ID;
  }

  public String getUsageDescription() {
    return MessageFormat.format(Messages.getString("Login.help.usage.pattern"), //$NON-NLS-1$
        getCommandDescription(), getId(), CommandRunner.HOST_ARG, CommandRunner.USER_ARG, CommandRunner.PASSWORD_ARG);
  }

  public boolean isConnectionRequired(final Args args) {
    return false;
  }

  public String getResultDescription() {
    return myResultDescription;
  }

}