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//
// Copyright (C) 2019-21 The Qt Company
//
// This plugin provides UI customization for codereview.qt-project.org
//

<dom-module id="qt-gerrit-ui-plugin">
    <script>
        'use strict';

        var BUTTONS = [
            'gerrit-plugin-qt-workflow~abandon',
            'gerrit-plugin-qt-workflow~defer',
            'gerrit-plugin-qt-workflow~reopen',
            'gerrit-plugin-qt-workflow~stage',
            'gerrit-plugin-qt-workflow~unstage',
            'gerrit-plugin-qt-workflow~precheck'
        ];

        Gerrit.install(plugin => {

            plugin.buttons = null;

            function htmlToElement(html) {
                var template = document.createElement('template');
                html = html.trim(); // No white space
                template.innerHTML = html;
                return template.content.firstChild;
            }

            // Customize header
            plugin.hook('header-title',  {replace: true} ).onAttached(element => {
                const css_str = '<style> \
                                  .titleText::before {\
                                  background-image: url("/static/logo_qt.png");\
                                  background-size: 40px 30px;\
                                  background-repeat: no-repeat;\
                                  content: "";\
                                  display: inline-block;\
                                  height: 36px;\
                                  vertical-align: text-top;\
                                  width: 46px;\
                                }\
                                </style>';
                const html_str = '<div id="qt-header"> \
                                    <div class="titleText">Code Review</div> \
                                  </div>';
                var elem = htmlToElement(css_str);
                element.appendChild(elem);
                elem = htmlToElement(html_str);
                element.appendChild(elem);
            });

            // Hide Sanity Bot review score row by default in reply dialog
            plugin.hook('review-label-scores-sanity-review').onAttached(element => {
                const html = '<div id="review-label-scores-sanity-review-more-button"> \
                                  <div id="sanitybotreviewmorediv" class="labelNameCell" style="display:block;">more...</div> \
                                  <div id="sanitybotreviewscorediv" style="display:none;"></div> \
                              </div>';
                var wrapper_elem = document.createElement('div');
                wrapper_elem.innerHTML = html;

                // Place the sanity review label elements inside the new wrapper element.
                // When upgrading to a new Gerrit release use, "console.log(element)" to debug structure of the elements
                var child_elem2 = element.content.root.replaceChild(wrapper_elem, element.content.root.childNodes[2]);
                var child_elem3 = element.content.root.removeChild(element.content.root.childNodes[4]);
                var child_elem4 = element.content.root.removeChild(element.content.root.childNodes[5]);
                wrapper_elem.querySelector("#sanitybotreviewscorediv").appendChild(child_elem2);
                wrapper_elem.querySelector("#sanitybotreviewscorediv").appendChild(child_elem3);
                wrapper_elem.querySelector("#sanitybotreviewscorediv").appendChild(child_elem4);

                // Install click listener to show the score buttons when clicking on more.
                var more_button_handler = wrapper_elem.querySelector("#review-label-scores-sanity-review-more-button");
                var more_button_div = wrapper_elem.querySelector("#sanitybotreviewmorediv");
                var review_score_div = wrapper_elem.querySelector("#sanitybotreviewscorediv");
                more_button_handler.addEventListener("click", function() {
                    more_button_div.style.display = "none";
                    review_score_div.style.display = "block";
                });

            });

            // Customize change view
            plugin.on('show-revision-actions', function(revisionActions, changeInfo) {
                var actions = Object.assign({}, revisionActions, changeInfo.actions);
                var cActions = plugin.changeActions();

                // always hide the rebase button
                cActions.setActionHidden('revision', 'rebase', true);

                // Hide 'Sanity-Review+1' button in header
                var secondaryActionsElem = cActions._el.root.querySelector("#secondaryActions");
                if (secondaryActionsElem &&
                    secondaryActionsElem.innerHTML &&
                    secondaryActionsElem.innerHTML.indexOf('Sanity-Review+1') != -1) {
                    cActions.hideQuickApproveAction();
                }

                // Remove any existing buttons
                if (plugin.buttons) {
                    BUTTONS.forEach((key) => {
                        if(typeof plugin.buttons[key] !== 'undefined' && plugin.buttons[key] !== null) {
                            cActions.removeTapListener(plugin.buttons[key], (param) => {} );
                            cActions.remove(plugin.buttons[key]);
                            plugin.buttons[key] = null;
                        }
                    });
                } else plugin.buttons = [];

                // Add buttons based on server response
                BUTTONS.forEach((key) => {
                    var action = actions[key];
                    if (action) {
                        // hide dropdown action
                        cActions.setActionHidden(action.__type, action.__key, true);

                        // add button
                        plugin.buttons[key] = cActions.add(action.__type, action.label);
                        cActions.setTitle(plugin.buttons[key], action.title);
                        cActions.setEnabled(plugin.buttons[key], action.enabled===true);
                        cActions.addTapListener(plugin.buttons[key], buttonEventCallback);

                        if (key === 'gerrit-plugin-qt-workflow~stage') {
                            // use the submit icon for our stage button
                            cActions.setIcon(plugin.buttons[key], 'submit');
                            // hide submit button when it would be disabled next to the stage button
                            let submit = actions['submit'];
                            if (!submit.enabled) {
                                cActions.setActionHidden('revision', 'submit', true);
                            }
                        }

                    }
                });

                function buttonEventCallback(event) {
                    var button_key = event.type.substring(0, event.type.indexOf('-tap'));
                    var button_action = null;
                    var button_index;
                    for (var k in plugin.buttons) {
                        if (plugin.buttons[k] === button_key) {
                            button_action = actions[k];
                            button_index = k;
                            break;
                        }
                    }
                    if (button_action) {
                        const buttonEl = this.$$(`[data-action-key="${button_key}"]`);
                        buttonEl.setAttribute('loading', true);
                        buttonEl.disabled = true;
                        plugin.restApi().post(button_action.__url, {})
                            .then((ok_resp) => {
                                buttonEl.removeAttribute('loading');
                                buttonEl.disabled = false;
                                window.location.reload(true);
                            }).catch((failed_resp) => {
                                buttonEl.removeAttribute('loading');
                                buttonEl.disabled = false;
                                this.fire('show-alert', {message: 'FAILED: ' + failed_resp});
                            });
                    } else console.log('unexpected error: no action');
                }
            });
        });
    </script>
</dom-module>