pr-desc-cli/dist/git-utils.js

AI-powered PR description generator

import simpleGit from "simple-git";
const git = simpleGit();
export async function getGitChanges(baseBranch, maxFiles) {
    try {
        await git.fetch();
        const currentBranch = (await git.revparse(["--abbrev-ref", "HEAD"])).trim();
        const diffSummary = await git.diffSummary([`${baseBranch}...HEAD`]);
        const log = await git.log({
            from: baseBranch,
            to: "HEAD",
            maxCount: 10,
        });
        const numstatOutput = await git.raw([
            "diff",
            `${baseBranch}...HEAD`,
            "--numstat",
        ]);
        const numstatMap = {};
        numstatOutput.split("\n").forEach((line) => {
            if (!line.trim())
                return;
            const [add, del, path] = line.split("\t");
            numstatMap[path] = {
                additions: add === "-" ? 0 : parseInt(add, 10),
                deletions: del === "-" ? 0 : parseInt(del, 10),
            };
        });
        const diffFiles = diffSummary.files.slice(0, maxFiles);
        const files = [];
        for (const file of diffFiles) {
            const stats = numstatMap[file.file] || { additions: 0, deletions: 0 };
            let patch = null;
            try {
                patch = await git.diff([`${baseBranch}...HEAD`, "--", file.file]);
            }
            catch {
                patch = null;
            }
            files.push({
                path: file.file,
                status: getFileStatus(stats),
                additions: stats.additions,
                deletions: stats.deletions,
                patch,
            });
        }
        const commits = log.all.map((commit) => ({
            hash: commit.hash,
            message: commit.message,
            author: commit.author_name || "Unknown",
            date: commit.date,
        }));
        return {
            baseBranch,
            currentBranch,
            files,
            commits,
            stats: {
                insertions: diffSummary.insertions,
                deletions: diffSummary.deletions,
                filesChanged: diffSummary.files.length,
            },
        };
    }
    catch (error) {
        throw new Error(`Failed to get git changes: ${error instanceof Error ? error.message : "Unknown error"}`);
    }
}
function getFileStatus(file) {
    if (file.additions > 0 && file.deletions === 0)
        return "added";
    if (file.additions === 0 && file.deletions > 0)
        return "deleted";
    if (file.additions > 0 && file.deletions > 0)
        return "modified";
    return "unknown";
}