☰

GitHub Actions Filter Button

Filter Cloud Hypervisor passed or non-required checks.

// ==UserScript==
// @name         GitHub Actions Filter Button
// @namespace    http://www.nxw.name
// @version      1.0.10
// @description  Filter Cloud Hypervisor passed or non-required checks.
// @author       Xuewei Niu
// @match        *://github.com/cloud-hypervisor/cloud-hypervisor*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=github.com
// @grant        none
// @license      Apache-2.0
// ==/UserScript==

var filteredItems = 0;
var checkCount = 0;
var filterButton;

function onFilterButtonClicked() {
    var checks = document.querySelectorAll('div.merge-status-list.hide-closed-list.js-updatable-content-preserve-scroll-position > div');
    if (checks.length == 0) {
        console.log('stop hiding checks: they aren\'t ready')
        return;
    }

    if (checkCount === 0) {
        checkCount = checks.length;
    }

    var hidden = (filteredItems === 0);
    if (!hidden) {
        // Count the number of showing checks
        var showingCheckCount = 0;
        checks.forEach(function(check) {
            if (!check.classList.contains('hidden-check')) {
                showingCheckCount += 1;
            }
        });
        // GitHub updates periodly to restore the hidden checks.
        // We need to update `hidden` to fit the above issue.
        if (checkCount === showingCheckCount) {
            console.log('checks were updated, hide checks again');
            hidden = true;
        }
        filteredItems = 0
    }
    checks.forEach(function(check) {
        if (hidden) {
            // There is no github icon in the case of non-gha,
            // so the indexes of status element and details element
            // are required to calculate dynamically.
            var elemCount = check.childElementCount;
            var statusElement = check.querySelector('div:nth-child('+ (elemCount-1) +')');
            if (!statusElement) {
                console.debug(statusElement, 'check status not found');
                return;
            }
            var detailsElement = check.querySelector('div:nth-child('+ elemCount +')');
            if (!detailsElement) {
                console.debug(detailsElement, 'check details not found');
                return;
            }

            var statusText = statusElement.textContent;
            var requiredText = detailsElement.textContent;
            // 'Successful in' for GHA, 'Build finished' for Jenkins
            var successful = statusText.includes('Successful in') || statusText.includes('Build finished');
            var required = requiredText.includes('Required');

            if (successful || !required) {
                console.debug('check item is hidden: successful: ' + successful + ', required: ' + required, check);
                check.classList.add('hidden-check');
            } else {
                console.info('check item isn\'t hidden: successful: ' + successful + ', required: ' + required, check);
            }
            filteredItems += 1;
        } else {
            check.classList.remove('hidden-check');
        }
    });
}

function insertFilterButton() {
    var body = document.querySelector('body');
    var bodyFirstChild = document.querySelector('body div:nth-child(1)');

    filterButton = document.createElement('button');
    filterButton.type = 'button';
    filterButton.textContent = 'Filter Checks';
    filterButton.classList.add('gha-filter-button');
    filterButton.classList.add('hidden-check');
    filterButton.addEventListener('click', onFilterButtonClicked);

    body.insertBefore(filterButton, bodyFirstChild);
}

function insertHiddenCheckCssStyle() {
    var styleElement = document.createElement('style');
    styleElement.type = 'text/css';
    var cssRule = document.createTextNode('.hidden-check { display: none !important }\n.gha-filter-button { position: fixed; bottom: 100px; right: 20px; display: block; z-index: 10000; background-color: #218bff; color: #fff; padding: 5px 16px; border: none; border-radius: 6px;}');
    styleElement.appendChild(cssRule);
    document.head.appendChild(styleElement);
}

function updateFilterButton(href) {
    const regex = /github\.com\/cloud-hypervisor\/cloud-hypervisor\/pull\/\d+(#pullrequestreview-\d+)?(#discussion_r\d+)?(#issuecomment-\d+)?$/;
    if (regex.test(href)) {
        console.debug('show filter button', href);
        filterButton.classList.remove('hidden-check');
    } else {
        console.debug('hide filter button', href);
        filterButton.classList.add('hidden-check');
    }
}

function listenUrlChanged(callback) {
    var _wr = function (type) {
        var orig = history[type];
        return function () {
            var rv = orig.apply(this, arguments);
            var e = new Event(type);
            e.arguments = arguments;
            window.dispatchEvent(e);
            return rv;
        };
    };
    history.pushState = _wr('pushState');

    window.addEventListener('pushState', function (e) {
        console.debug('pushState: url changed', window.location.href);
        callback();
    });
    window.addEventListener('popstate', function (e) {
        console.debug('popstate: url changed', window.location.href);
        callback();
    });
    window.addEventListener('hashchange', function (e) {
        console.debug('hashchange: url changed', window.location.href);
        callback();
    });
}

(function() {
    'use strict';

    insertHiddenCheckCssStyle();
    insertFilterButton();

    updateFilterButton(window.location.href);
    listenUrlChanged(function() {
        updateFilterButton(window.location.href);
        filteredItems = 0;
    });
})();