/*******************************************************************************
 * Copyright (c) 2004, 2008 Tasktop Technologies and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Tasktop Technologies - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.examples.monitor.study;

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

import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.mylyn.commons.core.StatusHandler;
import org.eclipse.mylyn.internal.monitor.usage.UiUsageMonitorPlugin;
import org.eclipse.mylyn.internal.monitor.usage.wizards.UsageSubmissionWizard;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

/**
 * Page to submit feedback for the user study
 * 
 * @author Shawn Minto
 * @author Mik Kersten
 */
public class SubmitFeedbackPage extends WizardPage {

	private Text firstName;

	private Text lastName;

	private Text emailAddress;

	private Text feedback;

	private Text uid;

	private Button totallyAnonymous;

	private Button identifiedUserStudyId;

	private Button identifiedNameEmail;

	private String first;

	private String last;

	private String email;

	private String feed;

	private int id;

	private boolean anon;

	private boolean named;

	private final UsageSubmissionWizard uploadWizard;

	/**
	 * Constructor
	 */
	public SubmitFeedbackPage(UsageSubmissionWizard uploadWizard) {
		super("Feedback Wizard");
		setTitle("Submit feedback for Mylyn User Study");
		// setDescription(QuestionnaireWizardPage.FEEDBACK_REQUEST);
		this.uploadWizard = uploadWizard;
	}

	/**
	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createControl(Composite parent) {
		Composite container = new Composite(parent, SWT.NULL);
		GridLayout layout = new GridLayout();
		container.setLayout(layout);
		layout.numColumns = 1;

		Composite container2 = null;

		if (uploadWizard == null) {
			container2 = new Composite(container, SWT.NULL);
			layout = new GridLayout(2, false);
			container2.setLayout(layout);

			container2 = addSubmissionStyleControls(container2);
		} else {
			container2 = new Composite(container, SWT.NULL);
			layout = new GridLayout(2, true);
			container2.setLayout(layout);
		}

		Label label = new Label(container2, SWT.NONE);
		// HACK used to make the feedback column a nice width
		label.setText("Feedback:                                                            ");
		GridData gd = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_BOTH);
		gd.horizontalSpan = 2;
		label.setLayoutData(gd);

		feedback = new Text(container2, SWT.BORDER | SWT.V_SCROLL | SWT.WRAP);
		gd = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_BOTH | GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan = 2;
		gd.verticalSpan = 40;
		feedback.setLayoutData(gd);
		feedback.setEditable(true);
		feedback.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				feed = feedback.getText();
				SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
			}
		});

		setControl(container);
	}

	private Composite addSubmissionStyleControls(Composite container) {
		totallyAnonymous = new Button(container, SWT.RADIO);
		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		totallyAnonymous.setLayoutData(gd);
		totallyAnonymous.setSelection(false);
		totallyAnonymous.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				if (e.widget == totallyAnonymous) {
					anon = true;
					named = false;
					boolean edit = !anon;
					firstName.setEditable(edit);
					lastName.setEditable(edit);
					emailAddress.setEditable(edit);
					SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
				}
			}

			public void widgetDefaultSelected(SelectionEvent e) {
				// don't care about default selection
			}
		});

		Group anonCont = new Group(container, SWT.SHADOW_ETCHED_IN);
		GridLayout layout = new GridLayout(1, true);
		layout.verticalSpacing = 9;
		layout.horizontalSpacing = 4;
		anonCont.setLayout(layout);
		anonCont.setText("Anonymous");

		identifiedUserStudyId = new Button(container, SWT.RADIO);
		gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		identifiedUserStudyId.setLayoutData(gd);
		identifiedUserStudyId.setSelection(false);
		identifiedUserStudyId.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				if (e.widget == identifiedUserStudyId) {
					anon = true;
					named = false;
					boolean edit = !anon;
					firstName.setEditable(edit);
					lastName.setEditable(edit);
					emailAddress.setEditable(edit);
					SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
				}
			}

			public void widgetDefaultSelected(SelectionEvent e) {
				// don't care about default selection
			}
		});

		Group idUserCont = new Group(container, SWT.SHADOW_ETCHED_IN);
		layout = new GridLayout(2, true);
		layout.verticalSpacing = 9;
		layout.horizontalSpacing = 4;
		idUserCont.setLayout(layout);
		idUserCont.setText("Identified By User Study Id");

		Label label = new Label(idUserCont, SWT.NULL);
		label.setText("User Id:");

		uid = new Text(idUserCont, SWT.BORDER | SWT.SINGLE);
		gd = new GridData(SWT.FILL, SWT.FILL, true, true);
		gd.horizontalSpan = 1;
		uid.setLayoutData(gd);
		uid.setEditable(false);
		id = UiUsageMonitorPlugin.getDefault().getPreferenceStore().getInt(UiUsageMonitorPlugin.PREF_USER_ID);
		if (id == 0) {
			id = -1;
		}
		uid.setText(id + "");

		identifiedNameEmail = new Button(container, SWT.RADIO);
		gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		identifiedNameEmail.setLayoutData(gd);
		identifiedNameEmail.setSelection(false);
		identifiedNameEmail.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				if (e.widget == identifiedNameEmail) {
					anon = false;
					named = true;
					boolean edit = !anon;
					firstName.setEditable(edit);
					lastName.setEditable(edit);
					emailAddress.setEditable(edit);
					SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
				}
			}

			public void widgetDefaultSelected(SelectionEvent e) {
				// don't care about default selection
			}
		});

		Group idCont = new Group(container, SWT.SHADOW_ETCHED_IN);
		layout = new GridLayout(1, true);
		layout.verticalSpacing = 9;
		layout.horizontalSpacing = 4;
		idCont.setLayout(layout);
		idCont.setText("Identifed By Name and Email");

		Composite names = new Composite(idCont, SWT.NULL);
		layout = new GridLayout(6, true);
		layout.verticalSpacing = 9;
		layout.horizontalSpacing = 4;
		names.setLayout(layout);

		label = new Label(names, SWT.NULL);
		label.setText("First Name:");

		firstName = new Text(names, SWT.BORDER | SWT.SINGLE);
		gd = new GridData(SWT.FILL, SWT.FILL, true, true);
		gd.horizontalSpan = 2;
		firstName.setLayoutData(gd);
		firstName.setEditable(true);
		firstName.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				first = firstName.getText();
				SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
			}
		});

		label = new Label(names, SWT.NULL);
		label.setText("Last Name:");

		lastName = new Text(names, SWT.BORDER | SWT.SINGLE);
		gd = new GridData(SWT.FILL, SWT.FILL, true, true);
		gd.horizontalSpan = 2;
		lastName.setLayoutData(gd);
		lastName.setEditable(true);
		lastName.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				last = lastName.getText();
				SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
			}
		});

		label = new Label(names, SWT.NONE);
		label.setText("Email Address:");

		emailAddress = new Text(names, SWT.BORDER | SWT.SINGLE);
		gd = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_BOTH);
		gd.horizontalSpan = 5;
		emailAddress.setLayoutData(gd);
		emailAddress.setEditable(true);
		emailAddress.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				email = emailAddress.getText();
				boolean valid = vaidateEmail(email);
				if (!valid) {
					SubmitFeedbackPage.this.setErrorMessage("Must be a valid e-mail address");
				} else {
					SubmitFeedbackPage.this.setErrorMessage(null);
				}
				SubmitFeedbackPage.this.setPageComplete(SubmitFeedbackPage.this.isPageComplete());
			}
		});

		if (id == -1) {
			identifiedUserStudyId.setEnabled(false);
			identifiedNameEmail.setSelection(true);
		} else {
			identifiedUserStudyId.setSelection(true);
			firstName.setEditable(false);
			lastName.setEditable(false);
			emailAddress.setEditable(false);
		}
		return container;
	}

	private boolean vaidateEmail(String emailToVerify) {
		if (emailToVerify.contains("@")) {
			emailToVerify = emailToVerify.substring(emailToVerify.indexOf("@"));
			return emailToVerify.contains(".");
		}
		return false;
	}

	public boolean hasAllFields() {
		if (uploadWizard != null) {
			return (((!firstName.getText().equals("") && !lastName.getText().equals("") && !emailAddress.getText()
					.equals("")) || anon) && !feedback.getText().equals(""));
		} else {
			return !feedback.getText().equals("");
		}
	}

	@Override
	public boolean isPageComplete() {
		if (hasAllFields() && this.getErrorMessage() == null) {
			return true;
		} else {
			return false;
		}
	}

	@Override
	public IWizardPage getNextPage() {
		return super.getNextPage();

	}

	/** ONLY VALID IF WIZARD NOT STARTED FROM UPLOAD WIZARD */
	public boolean isAnon() {
		return anon;
	}

	public int getUid() {
		if (anon || named) {
			return -1;
		}
		return id;
	}

	public String getStringUid() {
		if (anon) {
			return "anon";
		} else if (named) {
			return "named";
		} else {
			return "" + getUid();
		}
	}

	/** ONLY VALID IF WIZARD NOT STARTED FROM UPLOAD WIZARD */
	public String getEmailAddress() {
		if (anon) {
			return "null";
		}
		return email;
	}

	/** ONLY VALID IF WIZARD NOT STARTED FROM UPLOAD WIZARD */
	public String getFirstName() {
		if (anon) {
			return "null";
		}
		return first;
	}

	/** ONLY VALID IF WIZARD NOT STARTED FROM UPLOAD WIZARD */
	public String getLastName() {
		if (anon) {
			return "null";
		}
		return last;
	}

	/** ONLY VALID IF WIZARD NOT STARTED FROM UPLOAD WIZARD */
	public String getFeedback() {
		return feed;
	}

	public File createFeedbackFile() {
		IPath rootPath = ResourcesPlugin.getWorkspace().getRoot().getLocation();
		String path = rootPath.toString() + File.separator + "feedback.txt";
		File feedbackFile = new File(path);

		if (feedbackFile.exists()) {
			feedbackFile.delete();
		}

		OutputStream outputStream;
		try {
			outputStream = new FileOutputStream(feedbackFile);

			String buffer = "First Name: " + getFirstName() + "\r\n";
			outputStream.write(buffer.getBytes());
			buffer = "Last Name: " + getLastName() + "\r\n";
			outputStream.write(buffer.getBytes());
			buffer = "E-mail Address: " + getEmailAddress() + "\r\n";
			outputStream.write(buffer.getBytes());
			buffer = "UID: " + getUid() + "\r\n";
			outputStream.write(buffer.getBytes());
			buffer = "Feedback: " + getFeedback() + "\r\n";
			outputStream.write(buffer.getBytes());
			outputStream.close();
			return feedbackFile;
		} catch (IOException e) {
			StatusHandler.log(new Status(IStatus.ERROR, MylynUserStudyExamplePlugin.ID_PLUGIN, "Failed to submit", e));
		}
		return null;
	}

}