module.exports = async ({ github, context, core }) => {
const fs = require('fs');
const output = fs.readFileSync('benchmark_output.txt', 'utf8');
const lines = output.split('\n').filter(l =>
l.includes('time:') || l.includes('change:') || l.includes('Performance')
);
if (lines.length === 0) {
core.info('No benchmark results to post.');
return;
}
const body = [
'## 📊 Benchmark Results',
'',
'```',
lines.join('\n'),
'```',
'',
'<details><summary>Full output</summary>',
'',
'```',
output.substring(0, 60000),
'```',
'</details>',
].join('\n');
const { data: comments } = await github.rest.issues.listComments({
owner: context.repo.owner,
repo: context.repo.repo,
issue_number: context.payload.pull_request.number,
});
const marker = '## 📊 Benchmark Results';
const existing = comments.find(c => c.body && c.body.startsWith(marker));
if (existing) {
await github.rest.issues.updateComment({
owner: context.repo.owner,
repo: context.repo.repo,
comment_id: existing.id,
body,
});
} else {
await github.rest.issues.createComment({
owner: context.repo.owner,
repo: context.repo.repo,
issue_number: context.payload.pull_request.number,
body,
});
}
};