package com.jetbrains.teamcity.command;

import com.jetbrains.teamcity.*;
import com.jetbrains.teamcity.Util.StringTable;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import javax.naming.directory.InvalidAttributesException;
import jetbrains.buildServer.BuildTypeData;
import jetbrains.buildServer.ProjectData;
import jetbrains.buildServer.core.runtime.IProgressMonitor;

public class ListCommand implements ICommand {

  private static final String EMPTY = Messages.getString("List.empty.description"); //$NON-NLS-1$

  private static final String CONFIGURATION_SWITCH_LONG = Messages.getString("List.conf.runtime.param.long"); //$NON-NLS-1$
  private static final String CONFIGURATION_SWITCH = Messages.getString("List.conf.runtime.param"); //$NON-NLS-1$

  private static final String PROJECT_SWITCH_LONG = Messages.getString("List.project.runtime.param.long"); //$NON-NLS-1$
  private static final String PROJECT_SWITCH = Messages.getString("List.project.runtime.param"); //$NON-NLS-1$

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

  private String myResultDescription;

  public void execute(final Server server, final Args args, final IProgressMonitor monitor) throws EAuthorizationException, ECommunicationException, ERemoteError, InvalidAttributesException {
    if (args.hasArgument(PROJECT_SWITCH, PROJECT_SWITCH_LONG) 
        &&args.getArgument(PROJECT_SWITCH, PROJECT_SWITCH_LONG) == null 
        &&!args.hasArgument(CONFIGURATION_SWITCH, CONFIGURATION_SWITCH_LONG)) {

      myResultDescription = printProjects(server);

    } else if (args.getArgument(PROJECT_SWITCH, PROJECT_SWITCH_LONG) != null
        || args.hasArgument(CONFIGURATION_SWITCH, CONFIGURATION_SWITCH_LONG)) {

      myResultDescription = printConfigurations(server, args);

    } else {

      final StringBuffer resultBuffer = new StringBuffer();
      resultBuffer.append(Messages.getString("List.projects.section.header")); //$NON-NLS-1$
      resultBuffer.append(printProjects(server));
      resultBuffer.append(Messages.getString("List.configurations.section.header")); //$NON-NLS-1$
      resultBuffer.append(printConfigurations(server, null));

      myResultDescription = resultBuffer.toString();
    }
  }

  private String printConfigurations(final Server server, Args args) throws ECommunicationException {
    final String filterByProject;
    if (args != null && args.hasArgument(PROJECT_SWITCH, PROJECT_SWITCH_LONG)) {
      filterByProject = args.getArgument(PROJECT_SWITCH, PROJECT_SWITCH_LONG);
    } else {
      filterByProject = null;
    }
    // get & sort
    // cache projects
    final HashMap<String, String> prjMap = new HashMap<String, String>();
    for (final ProjectData prj : server.getProjects()) {
      prjMap.put(prj.getExternalId(), prj.getName());
    }
    final ArrayList<BuildTypeData> configurations = new ArrayList<BuildTypeData>(server.getConfigurations());
    Collections.sort(configurations, new Comparator<BuildTypeData>() {
      public int compare(BuildTypeData o1, BuildTypeData o2) {
        if (filterByProject != null) {
          return o1.getName().compareTo(o2.getName());
        }
        final String prj1name = prjMap.get(o1.getExternalId());
        final String prj2name = prjMap.get(o2.getExternalId());
        return (prj1name + " " + o1.getName()).compareTo(prj2name + " " + o2.getName());
      }
    });
    // display
    final StringTable table = new Util.StringTable(Messages.getString("List.config.list.header")); //$NON-NLS-1$
    for (final BuildTypeData config : configurations) {
      // check
      if ((filterByProject == null) || config.getProjectExternalId().equals(filterByProject)) {
        final String description = config.getDescription() == null ? EMPTY : config.getDescription();
        final String prjName = prjMap.get(config.getProjectExternalId());
        table.addRow(MessageFormat.format(Messages.getString("List.config.list.pattern"), config.getExternalId(), prjName, config.getName(), config.getStatus(), description)); //$NON-NLS-1$
      }
    }
    return table.toString();
  }

  private String printProjects(final Server server) throws ECommunicationException {
    // get & sort
    final ArrayList<ProjectData> projects = new ArrayList<ProjectData>(server.getProjects());
    Collections.sort(projects, new Comparator<ProjectData>() {
      public int compare(ProjectData o1, ProjectData o2) {
        return o1.getName().compareTo(o2.getName());
      }
    });

    // display
    final StringTable table = new Util.StringTable(Messages.getString("List.project.list.header")); //$NON-NLS-1$
    for (final ProjectData project : projects) {
      final String description = project.getDescription() == null ? EMPTY : project.getDescription();
      table.addRow(MessageFormat.format(Messages.getString("List.project.list.pattern"), project.getExternalId(), project.getName(), project.getStatus(), description)); //$NON-NLS-1$
    }
    return table.toString();
  }

  public String getId() {
    return ID;
  }

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

  public String getUsageDescription() {
    return MessageFormat.format(Messages.getString("List.help.usage.pattern"), //$NON-NLS-1$
        getCommandDescription(), getId(), PROJECT_SWITCH, CONFIGURATION_SWITCH, PROJECT_SWITCH, PROJECT_SWITCH, PROJECT_SWITCH_LONG, CONFIGURATION_SWITCH, CONFIGURATION_SWITCH_LONG);
  }

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

  public String getResultDescription() {
    return myResultDescription;
  }

  public void validate(Args args) throws IllegalArgumentException {
    // TODO Auto-generated method stub

  }

}