Add Labels to GitHub Notifications

Use API calls to get the labels of all issues and pull requests from the notification list.
当前为 2023-08-03 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name        Add Labels to GitHub Notifications
// @namespace   https://gf.qytechs.cn/en/users/668659-denvercoder1
// @match       https://github.com/notifications
// @grant       none
// @license     MIT
// @version     1.0.0
// @author      Jonah Lawrence
// @description Use API calls to get the labels of all issues and pull requests from the notification list.
// ==/UserScript==

/*
 * Manually clear cache by running the following in the console:
 * localStorage.setItem("labels", "{}");
 *
 * Get more GitHub API requests and enable private repos with a personal access token:
 * localStorage.setItem("gh_token", "YOUR_TOKEN_HERE");
 *
 * To get a personal access token go to https://github.com/settings/tokens/new
 * To enable private repos, you will need to enable the repos scope for the token.
 */

(() => {
    function hexToRgb(hex) {
        const bigint = parseInt(hex, 16);
        const r = (bigint >> 16) & 255;
        const g = (bigint >> 8) & 255;
        const b = bigint & 255;
        return [r, g, b];
    }

    function hexToHsl(hex) {
        let [r, g, b] = hexToRgb(hex);
        r /= 255;
        g /= 255;
        b /= 255;
        const l = Math.max(r, g, b);
        const s = l - Math.min(r, g, b);
        const h = s ? (l === r ? (g - b) / s : l === g ? 2 + (b - r) / s : 4 + (r - g) / s) : 0;
        return [
            60 * h < 0 ? 60 * h + 360 : 60 * h,
            100 * (s ? (l <= 0.5 ? s / (2 * l - s) : s / (2 - (2 * l - s))) : 0),
            (100 * (2 * l - s)) / 2,
        ];
    }

    function addLabels(labels, container) {
        // if there are already labels, do nothing
        if (container.querySelector(".js-issue-labels")) {
            return;
        }
        // append colored labels to the notification list
        const labelContainer = document.createElement("div");
        labelContainer.className = "js-issue-labels d-flex flex-wrap";
        labelContainer.style.marginTop = "10px";
        labelContainer.style.maxHeight = "20px";
        labels.forEach((label) => {
            const labelElement = document.createElement("span");
            labelElement.className = "IssueLabel hx_IssueLabel width-fit mb-1 mr-1 d-inline-flex";
            const [r, g, b] = hexToRgb(label.color);
            const [h, s, l] = hexToHsl(label.color);
            labelElement.setAttribute(
                "style",
                `--label-r:${r};--label-g:${g};--label-b:${b};--label-h:${h};--label-s:${s};--label-l:${l};`
            );
            labelElement.innerText = label.name;
            labelElement.addEventListener("click", (e) => {
                e.stopPropagation();
                window.open(label.url);
            });
            labelContainer.appendChild(labelElement);
        });
        container.appendChild(labelContainer);
    }

    function run() {
        const cachedLabels = JSON.parse(localStorage.getItem("labels") || "{}");
        [...document.querySelectorAll(".notification-list-item-link:not(.added-notifications)")].map((a) => {
            a.classList.add("added-notifications");
            const url = a.href;
            if (cachedLabels[url]) {
                console.info("cached", url, cachedLabels[url]);
                addLabels(cachedLabels[url], a.parentElement);
                return;
            }
            const issueRegex = /https:\/\/github.com\/(.*)\/(.*)\/(issues|pull)\/(\d+)/;
            const match = url.match(issueRegex);
            if (match) {
                const [, owner, repo, , number] = match;
                const apiUrl = `https://api.github.com/repos/${owner}/${repo}/issues/${number}`;
                const headers = {
                    Accept: "application/vnd.github.v3+json",
                };
                const token = localStorage.getItem("gh_token") || "";
                if (token) {
                    headers.Authorization = `token ${token}`;
                }
                fetch(apiUrl, {
                    headers,
                })
                    .then((response) => response.json())
                    .then((data) => {
                        const labels = data.labels || [];
                        console.info("fetched", apiUrl, labels);
                        cachedLabels[url] = labels.map((label) => ({
                            date: new Date(),
                            name: label.name,
                            color: label.color,
                            url: label.url,
                        }));
                        localStorage.setItem("labels", JSON.stringify(cachedLabels));
                        addLabels(cachedLabels[url], a.parentElement);
                    })
                    .catch((error) => console.error(error));
            }
        });
    }

    function init() {
        // clear cache older than 2 hours
        const cachedLabels = JSON.parse(localStorage.getItem("labels") || "{}");
        Object.keys(cachedLabels).forEach((url) => {
            const { date } = cachedLabels[url];
            if (new Date() - new Date(date) > 2 * 60 * 60 * 1000) {
                delete cachedLabels[url];
            }
        });
        localStorage.setItem("labels", JSON.stringify(cachedLabels));

        // run every 500ms
        setInterval(run, 500);
    }

    // run init when the page loads or if it has already loaded
    if (document.readyState === "loading") {
        document.addEventListener("DOMContentLoaded", init);
    } else {
        init();
    }
})();
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