csvoss's GitHub Homepage++

BetterGitHubHomepage.js

// ==UserScript==
// @name         GitHub Homepage ++
// @namespace
// @version      0.1
// @description  Inject any PRs with reviews requested from me & any PRs waiting on me into the GitHub main page
// @author       Chelsea Voss
// @match        https://github.com/
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Edit this variable!
    const REPOS_YOU_CARE_ABOUT = [
        "/YourOrg/yourrepo",
    ];

    const username = document.getElementsByClassName("header-nav-current-user").item(0).getElementsByTagName("strong").item(0).innerHTML;
    const dash = document.getElementById("dashboard");
    const parser = new DOMParser();

    function getDOMFromPath(path) {
      const xmlhttp=new XMLHttpRequest();

      xmlhttp.open("GET", path, false);
      xmlhttp.send();
      return parser.parseFromString(xmlhttp.responseText, "text/html");
    }

    function prependSpace(place) {
        place.prepend(parser.parseFromString("<br/>", "text/html").firstChild);
    }

    function prependHeader(place, headerString, headerType) {
        place.prepend(parser.parseFromString("<" + headerType + ">" + headerString + "</" + headerType + ">", "text/html").firstChild);
    }

    function prependSlot(place, id) {
        place.prepend(parser.parseFromString("<div id=\"" + id + "\"></div>", "text/html").firstChild);
        return document.getElementById(id);
    }

    function addGenericSearch(id, header, path) {
        prependSpace(dash);
        const slot = prependSlot(dash, id);

        new Promise(function(resolve, reject) {
            const searchPage = getDOMFromPath(path);

            resolve(searchPage.getElementById("issue_search_results"));
        }).then(function(searchResults) {
            if (searchResults) {
                slot.prepend(searchResults);
                prependHeader(slot, header, "h3");
            } else {
                slot.prepend(header + ": none!");
            }
        });
    }

    function addPullRequestSearch(id, header, path, showStatus, showButton) {
        prependSpace(dash);
        const slot = prependSlot(dash, id);

        function fetchList() {
            const searchPage = getDOMFromPath(path);

            return searchPage.getElementById("issue_search_results");
        }
        async function fillSlot() {
            const searchResults = await fetchList();

            if (searchResults) {
                const pullRequests = searchResults.getElementsByClassName("issue-list-item");

                for (let i=0; i<pullRequests.length; i+=0) {
                    const oldLength = pullRequests.length;
                    const searchResult = pullRequests.item(i);

                    if (showStatus || showButton) {
                        const subSlot = prependSlot(slot, id + i);

                        new Promise(function(resolve, reject) {
                            const pullRequestPath = searchResult.getElementsByTagName("h3").item(0).getElementsByTagName("a").item(0).getAttribute("href");

                            resolve(getDOMFromPath(pullRequestPath));
                        }).then(function(pullRequestPage) {
                            const changesSinceLastViewed = pullRequestPage.getElementsByClassName("discussion-item-changes-marker").item(0);

                            if (showButton) {
                                const reviewRequestButton = pullRequestPage.getElementsByClassName("issues-listing").item(0).getElementsByClassName("flash-warn").item(0);

                                subSlot.prepend(reviewRequestButton);
                            }
                            if (showStatus) {
                                const pullRequestStatus = pullRequestPage.getElementsByClassName("branch-action-body").item(0).getElementsByClassName("branch-action-item").item(0);

                                subSlot.prepend(pullRequestStatus);
                            }
                            if (changesSinceLastViewed !== null) {
                                subSlot.prepend(changesSinceLastViewed.getElementsByClassName("discussion-item-header").item(0));
                            }
                        });
                    }
                    slot.prepend(searchResult);

                    // i+=0 in the loop because weirdly, newLength goes down. I'm not sure why.
                    // Hedge against both of the possible behaviors while not infinite looping.
                    const newLength = pullRequests.length;

                    if (newLength === oldLength) {
                        i += 1;
                    }
                }
                prependHeader(slot, header, "h3");
            } else {
                slot.prepend(header + ": none!");
            }
        }
        fillSlot();
    }

    function addRecentlyPushedBranches(id, header) {
        prependSpace(dash);
        let prependedHeader = false;

        REPOS_YOU_CARE_ABOUT.forEach(function(path) {
            const slot = prependSlot(dash, id + path);
            const headerSlot = prependSlot(dash, id + "header");

            function fetchList() {
                const repositoryPage = getDOMFromPath(path + "/show_partial?partial=tree%2Frecently_touched_branches_list");

                return repositoryPage.getElementsByClassName("RecentBranches").item(0);
            }
            async function fillSlot() {
                const newBranchAlert = await fetchList();
                if (newBranchAlert) {
                    slot.prepend(newBranchAlert);
                    if (!prependedHeader) {
                        prependSpace(slot);
                        prependHeader(headerSlot, header, "h3");
                        prependedHeader = true;
                    }
                }
            }
            fillSlot();
        });
    }

    prependSpace(dash);
    prependSpace(dash);
    addPullRequestSearch(
        "prsopenednotreviewed",
        "PRs you opened that aren't yet reviewed",
        "/search?utf8=%E2%9C%93&q=is%3Aopen+is%3Apr+author%3A" + username + "+review%3Anone",
        true, false
    );
    prependHeader(dash, "Waiting", "h1");
    addGenericSearch(
        "issuesassignedto",
        "Issues you are assigned to",
        "/search?utf8=%E2%9C%93&q=is%3Aopen+is%3Aissue+assignee%3A" + username + "+"
    );
    addPullRequestSearch(
        "prswaitingonchanges",
        "PRs waiting on your changes",
        "/search?utf8=✓&q=is%3Aopen+is%3Apr+review%3Achanges-requested+author%3A" + username + "+",
        true, false
    );
    addPullRequestSearch(
        "prswaitingonship",
        "PRs waiting for you to ship them",
        "/search?utf8=✓&q=is%3Aopen+is%3Apr+review%3Aapproved+author%3A" + username + "+",
        true, false
    );
    addPullRequestSearch(
        "prswaitingonreview",
        "PRs waiting on your review",
        "/search?utf8=✓&q=is%3Aopen+is%3Apr+review-requested%3A" + username + "+",
        false, true
    );
    addRecentlyPushedBranches(
        "recentlypushedbranches",
        "Your recently pushed branches"
    );
    prependHeader(dash, "Ready", "h1");
    window.scrollTo(0, 0);
})();