module.exports = async ({github, context, core}) => {

const fs = require('fs');

// Validate pr_number.txt

if (!fs.existsSync('pr_number.txt')) {

core.setFailed("Required artifact file 'pr_number.txt' was not found in the workspace.");

return;

}

const prNumberContent = fs.readFileSync('pr_number.txt', 'utf8').trim();

const issue_number = parseInt(prNumberContent, 10);

if (!Number.isFinite(issue_number) || issue_number <= 0) {

core.setFailed('Invalid PR number in pr_number.txt: "' + prNumberContent + '"');

return;

}

// Validate comparison.md

if (!fs.existsSync('comparison.md')) {

core.setFailed("Required artifact file 'comparison.md' was not found in the workspace.");

return;

}

let comparison;

try {

comparison = fs.readFileSync('comparison.md', 'utf8');

} catch (error) {

core.setFailed("Failed to read 'comparison.md': " + error.message);

return;

}

// Find existing comment

const { data: comments } = await github.rest.issues.listComments({

owner: context.repo.owner,

repo: context.repo.repo,

issue_number: issue_number,

});

const botComment = comments.find(comment =>

comment.user.type === 'Bot' &&

comment.body.includes('Benchmark Comparison')

);

const footer = '_{🤖 This comment will be automatically updated with the latest benchmark results.}';

const commentBody = `${comparison}\n\n${footer}`;

if (botComment) {

await github.rest.issues.updateComment({

owner: context.repo.owner,

repo: context.repo.repo,

comment_id: botComment.id,

body: commentBody

});

} else {

await github.rest.issues.createComment({

owner: context.repo.owner,

repo: context.repo.repo,

issue_number: issue_number,

body: commentBody

});

}

};