/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.syncope.client.enduser.panels;

import de.agilecoders.wicket.extensions.markup.html.bootstrap.form.password.strength.PasswordStrengthBehavior;
import org.apache.syncope.client.enduser.SyncopeWebApplication;
import org.apache.syncope.client.enduser.commons.EnduserConstants;
import org.apache.syncope.client.enduser.panels.captcha.CaptchaPanel;
import org.apache.syncope.client.ui.commons.markup.html.form.AbstractFieldPanel;
import org.apache.syncope.client.ui.commons.markup.html.form.AjaxPasswordFieldPanel;
import org.apache.syncope.client.ui.commons.markup.html.form.SyncopePasswordStrengthConfig;
import org.apache.syncope.client.ui.commons.panels.CardPanel;
import org.apache.syncope.client.ui.commons.panels.NotificationPanel;
import org.apache.syncope.common.lib.to.UserTO;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.core.util.string.CssUtils;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Button;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.PasswordTextField;
import org.apache.wicket.markup.html.form.StatelessForm;
import org.apache.wicket.markup.html.form.validation.EqualPasswordInputValidator;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.Model;
import org.apache.wicket.util.string.AppendingStringBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class ChangePasswordPanel extends Panel {

    protected static final Logger LOG = LoggerFactory.getLogger(ChangePasswordPanel.class);

    private static final long serialVersionUID = -8937593602426944714L;

    protected static final String FORM_SUFFIX = "form_";

    protected StatelessForm<Void> form;

    protected AjaxPasswordFieldPanel passwordField;

    protected AjaxPasswordFieldPanel confirmPasswordField;

    protected CaptchaPanel<Void> captcha;

    public ChangePasswordPanel(final String id, final NotificationPanel notificationPanel) {
        super(id);
        form = new StatelessForm<>("changePassword") {

            private static final long serialVersionUID = 418292023846536149L;

            @Override
            protected void addDefaultSubmitButtonHandler(final IHeaderResponse headerResponse) {
                AppendingStringBuffer buffer = new AppendingStringBuffer();

                String cssClass = getString(CssUtils.key(Form.class, "hidden-fields"));

                // div that is not visible (but not display:none either)
                buffer.append(String.format(
                        "<div style=\"width:0px;height:0px;position:absolute;"
                        + "left:-100px;top:-100px;overflow:hidden\" class=\"%s\">",
                        cssClass));

                // add an empty textfield (otherwise IE doesn't work)
                buffer.append("<input title=\"text_hidden\" "
                        + "aria-label=\"text_hidden\" type=\"text\" "
                        + "tabindex=\"-1\" autocomplete=\"off\"/>");

                // add the submitting component
                final Component submittingComponent = (Component) getDefaultButton();
                buffer.append("<input title=\"submit_hidden\" aria-label=\"submit_hidden\" "
                        + "type=\"submit\" tabindex=\"-1\" name=\"");
                buffer.append(getDefaultButton().getInputName());
                buffer.append("\" onclick=\" var b=document.getElementById('");
                buffer.append(submittingComponent.getMarkupId());
                buffer.append(
                        "'); if (b!=null&amp;&amp;b.onclick!=null&amp;&amp;typeof(b.onclick) != 'undefined') "
                        + "{  var r = Wicket.bind(b.onclick, b)(); if (r != false) b.click(); } "
                        + "else { b.click(); };  return false;\" ");
                buffer.append(" />");

                // close div
                buffer.append("</div>");

                getResponse().write(buffer);
            }
        };
        form.setOutputMarkupId(true);
        add(form);

        passwordField = new AjaxPasswordFieldPanel(
                "password",
                getString("password"),
                Model.of(),
                false,
                new PasswordStrengthBehavior(new SyncopePasswordStrengthConfig()));
        passwordField.setRequired(true);
        passwordField.setMarkupId("password");
        passwordField.setPlaceholder("password");

        Label passwordLabel = (Label) passwordField.get(AbstractFieldPanel.LABEL);
        passwordLabel.add(new AttributeModifier("for", FORM_SUFFIX + "password"));

        ((PasswordTextField) passwordField.getField()).setResetPassword(true);
        form.add(passwordField);

        confirmPasswordField = new AjaxPasswordFieldPanel(
                "confirmPassword", getString("confirmPassword"), Model.of(), true);
        confirmPasswordField.setRequired(true);
        confirmPasswordField.setMarkupId("confirmPassword");
        confirmPasswordField.setPlaceholder("confirmPassword");

        Label confirmPasswordLabel = (Label) confirmPasswordField.get(AbstractFieldPanel.LABEL);
        confirmPasswordLabel.add(new AttributeModifier("for", FORM_SUFFIX + "confirmPassword"));

        ((PasswordTextField) confirmPasswordField.getField()).setResetPassword(true);
        form.add(confirmPasswordField);

        form.add(new EqualPasswordInputValidator(passwordField.getField(), confirmPasswordField.getField()));

        captcha = new CaptchaPanel<>(EnduserConstants.CONTENT_PANEL);
        captcha.setOutputMarkupPlaceholderTag(true);

        form.add(new CardPanel.Builder<CaptchaPanel<Void>>()
                .setName("captcha")
                .setComponent(captcha)
                .isVisible(SyncopeWebApplication.get().isCaptchaEnabled()).build("captchaPanelCard"));

        AjaxButton submitButton = new AjaxButton("submit", new Model<>(getString("submit"))) {

            private static final long serialVersionUID = 429178684321093953L;

            @Override
            protected void onSubmit(final AjaxRequestTarget target) {
                doSubmit(target, passwordField);
            }

            @Override
            protected void onError(final AjaxRequestTarget target) {
                notificationPanel.refresh(target);
            }
        };
        form.add(submitButton);
        form.setDefaultButton(submitButton);

        Button cancel = new Button("cancel") {

            private static final long serialVersionUID = 3669569969172391336L;

            @Override
            public void onSubmit() {
                doCancel();
            }
        };
        cancel.setOutputMarkupId(true);
        cancel.setDefaultFormProcessing(false);
        form.add(cancel);
    }

    public StatelessForm<Void> getForm() {
        return form;
    }

    public AjaxPasswordFieldPanel getPasswordField() {
        return passwordField;
    }

    public AjaxPasswordFieldPanel getConfirmPasswordField() {
        return confirmPasswordField;
    }

    protected abstract void doSubmit(AjaxRequestTarget target, AjaxPasswordFieldPanel passwordField);

    protected abstract void doCancel();

    protected abstract UserTO getLoggedUser();
}
