package com.ibm.ServerWizard2.view;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
import java.util.Set;
import java.util.Vector;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.status.StatusLogger;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import com.ibm.ServerWizard2.ServerWizard2;
import com.ibm.ServerWizard2.utility.Github;
import com.ibm.ServerWizard2.utility.GithubRepository;
import org.eclipse.wb.swt.SWTResourceManager;

public class GitDialog extends Dialog {
	private Text txtNewRepo;
	Github git = new Github(ServerWizard2.GIT_LOCATION);

	private ListViewer listViewer;
	private Button btnCloned;
	private Button btnAdded;
	private Button btnRemoved;
	private Button btnChanged;
	private Button btnConflicting;
	private Button btnUntracked;
	private Button btnMissing;
	private Button btnNeedsPassword;
	private Button btnRefresh;
	private Text txtLocation;

	/**
	 * Create the dialog.
	 * 
	 * @param parentShell
	 */
	public GitDialog(Shell parentShell) {
		super(parentShell);
		StatusLogger.getLogger().setLevel(Level.FATAL);
	}

	private boolean isStatusSet(Set<String> status) {
		if (status.size() > 0) {
			for (String s : status) {
				ServerWizard2.LOGGER.info(s);
			}
			return true;
		}
		return false;
	}

	/**
	 * Create contents of the dialog.
	 * 
	 * @param parent
	 */
	@Override
	protected Control createDialogArea(Composite parent) {
		Composite container = (Composite) super.createDialogArea(parent);
		GridLayout gridLayout = (GridLayout) container.getLayout();

		Label lblGitRepositoryUrl = new Label(container, SWT.NONE);
		lblGitRepositoryUrl.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false, 1, 1));
		lblGitRepositoryUrl.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		lblGitRepositoryUrl.setText("Git Repository URL:");
		listViewer = new ListViewer(container, SWT.BORDER | SWT.V_SCROLL);

		List repositoryList = listViewer.getList();
		repositoryList.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		repositoryList.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {
				if (listViewer.getList().getSelectionCount() == 0) {
					return;
				}
				GithubRepository g = (GithubRepository) listViewer
						.getElementAt(listViewer.getList().getSelectionIndex());
				txtNewRepo.setText(g.getRemoteUrl());
				btnNeedsPassword.setSelection(g.needsPassword());
				if (g.isCloned()) {
					btnCloned.setSelection(true);
					txtLocation.setText(g.getRootDirectory().getAbsolutePath());
					org.eclipse.jgit.api.Status status = g.status();
					if (status != null) {
						btnAdded.setSelection(isStatusSet(status.getAdded()));
						btnRemoved.setSelection(isStatusSet(status.getRemoved()));
						btnChanged.setSelection(isStatusSet(status.getChanged()) | isStatusSet(status.getModified()));
						btnConflicting.setSelection(isStatusSet(status.getConflicting()));
						btnUntracked.setSelection(isStatusSet(status.getUntracked()));
						btnMissing.setSelection(isStatusSet(status.getMissing()));

					} else {
						MessageDialog.openError(null, "Git Error",
								"The Git Repository has been modified.  Please restart Serverwiz." + g.getRemoteUrl());
					}
				} else {
					btnCloned.setSelection(false);
				}
			}
		});
		GridData gd_repositoryList = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
		gd_repositoryList.widthHint = 314;
		gd_repositoryList.heightHint = 111;
		repositoryList.setLayoutData(gd_repositoryList);

		Composite composite = new Composite(container, SWT.NONE);
		composite.setLayout(new GridLayout(5, false));
		GridData gd_composite = new GridData(SWT.CENTER, SWT.CENTER, true, false, 1, 1);
		gd_composite.widthHint = 367;
		gd_composite.heightHint = 52;
		composite.setLayoutData(gd_composite);
		composite.setEnabled(false);

		Label lblNewLabel = new Label(composite, SWT.NONE);
		lblNewLabel.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		GridData gd_lblNewLabel = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);
		gd_lblNewLabel.widthHint = 48;
		lblNewLabel.setLayoutData(gd_lblNewLabel);
		lblNewLabel.setText("Status:");

		btnCloned = new Button(composite, SWT.CHECK);
		btnCloned.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnCloned.setText("Cloned");

		btnAdded = new Button(composite, SWT.CHECK);
		btnAdded.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnAdded.setText("Added");

		btnRemoved = new Button(composite, SWT.CHECK);
		btnRemoved.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnRemoved.setText("Removed");

		btnChanged = new Button(composite, SWT.CHECK);
		btnChanged.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnChanged.setText("Changed");
		new Label(composite, SWT.NONE);
		new Label(composite, SWT.NONE);

		btnConflicting = new Button(composite, SWT.CHECK);
		btnConflicting.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnConflicting.setText("Conflicting");

		btnUntracked = new Button(composite, SWT.CHECK);
		btnUntracked.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnUntracked.setText("Untracked");

		btnMissing = new Button(composite, SWT.CHECK);
		btnMissing.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnMissing.setText("Missing");

		Composite composite_4 = new Composite(container, SWT.NONE);
		composite_4.setLayout(new RowLayout(SWT.HORIZONTAL));
		GridData gd_composite_4 = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
		gd_composite_4.widthHint = 351;
		gd_composite_4.heightHint = 31;
		composite_4.setLayoutData(gd_composite_4);

		Label lblLocalLocation = new Label(composite_4, SWT.NONE);
		lblLocalLocation.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		lblLocalLocation.setLayoutData(new RowData(93, 24));
		lblLocalLocation.setText("Local Location: ");

		txtLocation = new Text(composite_4, SWT.BORDER);
		txtLocation.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		txtLocation.setEditable(false);
		txtLocation.setLayoutData(new RowData(237, SWT.DEFAULT));

		Composite composite_3 = new Composite(container, SWT.NONE);
		composite_3.setLayout(new RowLayout(SWT.HORIZONTAL));
		GridData gd_composite_3 = new GridData(SWT.RIGHT, SWT.CENTER, true, false, 1, 1);
		gd_composite_3.widthHint = 194;
		gd_composite_3.heightHint = 36;
		composite_3.setLayoutData(gd_composite_3);

		btnRefresh = new Button(composite_3, SWT.NONE);
		btnRefresh.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnRefresh.setLayoutData(new RowData(80, SWT.DEFAULT));
		btnRefresh.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {
				if (listViewer.getList().getSelectionCount() == 0) {
					return;
				}
				GithubRepository g = (GithubRepository) listViewer
						.getElementAt(listViewer.getList().getSelectionIndex());
				try {
					if (!g.isCloned()) {
						g.cloneRepository();
					}
					org.eclipse.jgit.api.Status status = g.status();

					if (!status.isClean()) {
						boolean reset = MessageDialog.openQuestion(null, "Repository is Modified",
								"The local repository for:\n" + g.getRemoteUrl() + "\n"
										+ "has been modified. Would you like to ignore changes and reset?");
						if (reset) {
							String r = g.fetch(true);
							MessageDialog.openInformation(null, "Refresh Complete", "Reset Successful");

						}
					} else {
						String r = g.fetch(false);
						MessageDialog.openInformation(null, "Refresh Complete", "Message: " + r);
					}
				} catch (Exception e) {
					MessageDialog.openError(null, "Git Refresh: " + g.getRemoteUrl(), e.getMessage());
				}
			}
		});

		btnRefresh.setText("Refresh");

		Button btnDummy = new Button(composite_3, SWT.NONE);
		btnDummy.setLayoutData(new RowData(14, SWT.DEFAULT));
		btnDummy.setVisible(false);
		btnDummy.setText("New Button");

		Button btnDelete = new Button(composite_3, SWT.NONE);
		btnDelete.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnDelete.setLayoutData(new RowData(80, SWT.DEFAULT));
		btnDelete.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {
				if (listViewer.getList().getSelectionCount() == 0) {
					return;
				}
				GithubRepository g = (GithubRepository) listViewer
						.getElementAt(listViewer.getList().getSelectionIndex());

				boolean delete = MessageDialog.openConfirm(null, "Delete Respository",
						"Are you sure you want to delete the following repository?\n" + g.getRemoteUrl() + "\n"
								+ "Note: This will NOT delete repository from disk");

				if (!delete) {
					return;
				}
				if (g.getRemoteUrl().equals(ServerWizard2.DEFAULT_REMOTE_URL)) {
					MessageDialog.openError(null, "Error", "Deleting of default repository is not allowed");
				} else {
					git.getRepositories().remove(g);
					listViewer.refresh();
				}
			}
		});
		btnDelete.setText("Delete");

		Label separator = new Label(container, SWT.SEPARATOR | SWT.HORIZONTAL);
		GridData gd_separator = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
		gd_separator.heightHint = 7;
		gd_separator.widthHint = 360;
		separator.setLayoutData(gd_separator);

		Composite composite_2 = new Composite(container, SWT.NONE);
		composite_2.setLayout(new RowLayout(SWT.HORIZONTAL));
		GridData gd_composite_2 = new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1);
		gd_composite_2.widthHint = 354;
		gd_composite_2.heightHint = 46;
		composite_2.setLayoutData(gd_composite_2);

		Label lblNewRepository = new Label(composite_2, SWT.NONE);
		lblNewRepository.setLayoutData(new RowData(95, SWT.DEFAULT));
		lblNewRepository.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		lblNewRepository.setText("New Repository:");

		txtNewRepo = new Text(composite_2, SWT.BORDER);
		txtNewRepo.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		txtNewRepo.setLayoutData(new RowData(234, SWT.DEFAULT));

		Composite composite_1 = new Composite(container, SWT.NONE);
		RowLayout rl_composite_1 = new RowLayout(SWT.HORIZONTAL);
		rl_composite_1.center = true;
		composite_1.setLayout(rl_composite_1);
		GridData gd_composite_1 = new GridData(SWT.RIGHT, SWT.CENTER, true, false, 1, 1);
		gd_composite_1.widthHint = 252;
		gd_composite_1.heightHint = 49;
		composite_1.setLayoutData(gd_composite_1);

		btnNeedsPassword = new Button(composite_1, SWT.CHECK);
		btnNeedsPassword.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnNeedsPassword.setLayoutData(new RowData(148, 40));
		btnNeedsPassword.setText("Needs Password?");

		Button btnAddRemote = new Button(composite_1, SWT.NONE);
		btnAddRemote.setLayoutData(new RowData(93, SWT.DEFAULT));
		btnAddRemote.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		btnAddRemote.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {
				String repo = txtNewRepo.getText();
				if (repo.isEmpty()) {
					MessageDialog.openError(null, "Error", "Repository URL is blank");
					return;
				}
				GithubRepository g = new GithubRepository(repo, git.getLocation(), btnNeedsPassword.getSelection());
				g.setShell(getShell());
				if (git.isRepository(g)) {
					MessageDialog.openError(null, "Error", "Repository already exists");
					return;
				}
				try {
					g.checkRemote();
					g.cloneRepository();
					git.getRepositories().add(g);
					txtNewRepo.setText("");
					listViewer.refresh();
					MessageDialog.openInformation(null, "New Repository","Repositiory added:\n"+g.getRootDirectory());
				} catch (Exception e) {
					MessageDialog.openError(null, "Add Remote: " + g.getRemoteUrl(), e.getMessage());
				}
			}
		});
		btnAddRemote.setText("Add Remote");
		
		Label label = new Label(container, SWT.SEPARATOR | SWT.HORIZONTAL);
		label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

		listViewer.setLabelProvider(new LabelProvider() {
			public Image getImage(Object element) {
				return null;
			}

			public String getText(Object element) {
				GithubRepository g = (GithubRepository) element;
				return g.getRemoteUrl();
			}
		});
		listViewer.setContentProvider(new IStructuredContentProvider() {
			public Object[] getElements(Object inputElement) {
				@SuppressWarnings("rawtypes")
				Vector v = (Vector) inputElement;
				return v.toArray();
			}

			@Override
			public void dispose() {
				// TODO Auto-generated method stub

			}

			@Override
			public void inputChanged(Viewer arg0, Object arg1, Object arg2) {
				// TODO Auto-generated method stub

			}
		});
		listViewer.setInput(git.getRepositories());
		this.getRepositories();
		listViewer.refresh();
		return container;
	}

	/**
	 * Create contents of the button bar.
	 * 
	 * @param parent
	 */
	@Override
	protected void createButtonsForButtonBar(Composite parent) {
		Button button = createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
		button.setFont(SWTResourceManager.getFont("Arial", 9, SWT.NORMAL));
		button.setText("Exit");
	}

	/**
	 * Return the initial size of the dialog.
	 */
	@Override
	protected Point getInitialSize() {
		return new Point(409, 523);
	}

	public void getRepositories() {
		try {
			boolean newFile = false;
			File f = new File(ServerWizard2.PROPERTIES_FILE);
			if (!f.exists()) {
				ServerWizard2.LOGGER.info("Preferences file doesn't exist, creating...");
				f.createNewFile();
				newFile = true;
			}
			FileInputStream propFile = new FileInputStream(ServerWizard2.PROPERTIES_FILE);
			Properties p = new Properties();
			p.load(propFile);
			propFile.close();

			if (newFile) {
				p.setProperty("repositories", ServerWizard2.DEFAULT_REMOTE_URL);
				p.setProperty("needs_password", "false");
			}
			String repos = p.getProperty("repositories");
			String pass = p.getProperty("needs_password");
			String repo[] = repos.split(",");
			String needsPass[] = pass.split(",");
			git.getRepositories().removeAllElements();

			for (int i = 0; i < repo.length; i++) {
				boolean n = false;
				if (needsPass[i].equals("true")) {
					n = true;
				}
				GithubRepository g = new GithubRepository(repo[i], ServerWizard2.GIT_LOCATION, n);
				g.setShell(getShell());
				git.getRepositories().add(g);
			}
		} catch (Exception e) {
			ServerWizard2.LOGGER.severe(e.getMessage());
		}
	}

	public boolean close() {
		Properties p = new Properties();
		try {
			FileInputStream propFile = new FileInputStream(ServerWizard2.PROPERTIES_FILE);
			p.load(propFile);
			propFile.close();

			FileOutputStream out = new FileOutputStream(ServerWizard2.PROPERTIES_FILE);
			String repo = git.getRepositoriesStr();
			String pass = git.getPasswordStr();
			p.setProperty("repositories", repo);
			p.setProperty("needs_password", pass);
			p.store(out, "");
			out.close();
		} catch (IOException e) {
			ServerWizard2.LOGGER.severe("Unable to write preferences file");
		}
		return super.close();
	}

	protected void configureShell(Shell shell) {
		super.configureShell(shell);
		shell.setText("Manage Git Repositories");
	}
}