github.js

/**
 *
 * @param { string } githubIssueUrl
 * @returns {{owner: string, repo: string, issueNumber: number}}
 */
export const issueUrlComponents = (githubIssueUrl) => {
    const url = new URL(githubIssueUrl);
    const [, owner, repo, , issueNumber] = url.pathname.split('/')
    return {owner, repo, issueNumber: parseInt(issueNumber, 10)};
}

/**
 *
 * @param {import("octokit").Octokit} octokitClient
 * @param { string } githubIssueUrl
 * @returns {Promise<string | undefined>}
 */
export const getIssueStatus = async (octokitClient, githubIssueUrl) => {
    try {
        const { owner, repo, issueNumber } = issueUrlComponents(githubIssueUrl);
        const issue = await octokitClient.rest.issues.get({owner, repo, issue_number: issueNumber});
        return issue.data.state;
    } catch (e) {
        return undefined
    }
}

/**
 * @param {import("octokit").Octokit} octokitClient
 * @param {string} githubIssueUrl
 * @param {string} comment
 * @returns {Promise<void>}
 */
export const postCommentOnIssue = async (octokitClient, githubIssueUrl, comment) => {
    const { owner, repo, issueNumber } = issueUrlComponents(githubIssueUrl);
    await octokitClient.rest.issues.createComment({owner, repo, issue_number: issueNumber, body: comment});
}

/**
 *
 * @param {import("octokit").Octokit} octokitClient
 * @param { string } githubIssueUrl
 * @returns {Promise<string | undefined>}
 */
export const getLastComment = async (octokitClient, githubIssueUrl) => {
    try {
        const { owner, repo, issueNumber } = issueUrlComponents(githubIssueUrl);
        const comments = await octokitClient.request(`GET /repos/${owner}/${repo}/issues/comments`, {
            owner,
            repo,
            sort:'created', 
            direction: 'desc', 
            per_page: '1',
            headers: {
                'X-GitHub-Api-Version': '2022-11-28'
            }
            });

            if (comments.data.length > 0) {
                // The last comment is the first item due to the sorting
                const lastComment = comments.data[0];
                return lastComment.body;
              } else {
                console.log('No comments found.');
                return undefined;
              }

    } catch (e) {
        console.error('Unable to get comments', e)
        return undefined
    }
}