scai/dist/github/postComments.js

> **AI-powered CLI for local code analysis, commit message suggestions, and natural-language queries.** 100% local, private, GDPR-friendly, made in Denmark/EU with ❤️.

import { Octokit } from '@octokit/rest';
/**
 * Parses the PR diff to determine the correct position for inline comments.
 * The position is the "index" of the changed line in the diff.
 * @param diff The diff content of the PR
 * @param lineNumber The line number to convert to a position in the diff
 */
function getLinePositionFromDiff(diff, lineNumber) {
    const lines = diff.split('\n');
    let currentLine = 0;
    // Iterate through the lines and determine the correct position for the lineNumber
    for (let i = 0; i < lines.length; i++) {
        // Only count the lines that are part of a diff chunk
        if (lines[i].startsWith('+') || lines[i].startsWith('-')) {
            currentLine++;
            if (currentLine === lineNumber) {
                return i; // Position is the index of the changed line in the diff
            }
        }
    }
    return null; // Return null if lineNumber is not found in the diff
}
/**
 * Posts an inline review comment on a specific line of a PR.
 *
 * @param token GitHub personal access token
 * @param owner Repository owner (e.g. 'my-org')
 * @param repo Repository name (e.g. 'my-repo')
 * @param prNumber Pull Request number
 * @param fileName Path to the file in the PR (relative to repo root)
 * @param lineNumber Line number to comment on in the file (not in the diff)
 * @param comment Text of the comment
 */
export async function postReviewComment(token, owner, repo, prNumber, fileName, lineNumber, comment) {
    const octokit = new Octokit({ auth: `token ${token}` });
    // First, get PR details so we can retrieve the head commit SHA
    const pr = await octokit.pulls.get({
        owner,
        repo,
        pull_number: prNumber,
    });
    const commitId = pr.data.head.sha;
    // Fetch the PR diff by getting the full diff URL from the PR
    const diffUrl = pr.data.diff_url;
    const diffRes = await fetch(diffUrl);
    const diff = await diffRes.text();
    // Get the position of the line in the diff
    const position = getLinePositionFromDiff(diff, lineNumber);
    if (position === null) {
        console.error(`❌ Unable to find line ${lineNumber} in the diff for PR #${prNumber}.`);
        return;
    }
    // Now, post the inline comment
    try {
        await octokit.pulls.createReviewComment({
            owner,
            repo,
            pull_number: prNumber,
            commit_id: commitId,
            path: fileName,
            body: comment,
            position: position, // Use the position calculated from the diff
        });
        console.log(`✅ Inline comment posted to ${fileName} at diff position ${position}.`);
    }
    catch (err) {
        console.error(`❌ Error posting inline comment: ${err.message}`);
    }
}