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Upload Preview

Upload Preview #136

name: Upload Preview
on:
workflow_run:
workflows: [Preview]
types:
- completed
jobs:
upload:
name: Upload
runs-on: ubuntu-latest
permissions:
contents: 'read'
id-token: 'write'
issues: 'write'
pull-requests: 'write'
if: ${{ github.event.workflow_run.conclusion == 'success' }}
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 2
- name: Authenticate to Google Cloud
uses: google-github-actions/auth@v2
with:
workload_identity_provider: 'projects/28141583151/locations/global/workloadIdentityPools/github/providers/github-actions'
service_account: 'github@spec-previews.iam.gserviceaccount.com'
- name: Fetch artifact
uses: actions/github-script@v7
with:
script: |
const fs = require('fs');
const allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
...context.repo,
run_id: context.payload.workflow_run.id
});
let artifact = allArtifacts.data.artifacts.find(
artifact => artifact.name === "upload-compressed");
if (!artifact)
process.exit(1);
let download = await github.rest.actions.downloadArtifact({
...context.repo,
artifact_id: artifact.id,
archive_format: 'zip',
});
fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/upload-compressed.zip`, Buffer.from(download.data));
- name: Unzip artifact
shell: bash
run: |
mkdir -p upload-compressed
unzip upload-compressed.zip -d upload-compressed
size=`du --summarize --block-size=1K upload-compressed | cut -f1`
if [[ "$size" -gt 4096 ]]; then
echo "Too large (was $size kilobytes)." >&2
exit 1
fi
pull_number="$(cat upload-compressed/.pull-number)"
if ! [[ "$pull_number" =~ ^[0-9]+$ ]]; then
echo "Invalid pull request number." >&2
exit 1
fi
echo "PULL_NUMBER=$pull_number" >> $GITHUB_ENV
- name: Upload to Google Cloud Storage
uses: google-github-actions/upload-cloud-storage@v0
with:
path: upload-compressed
glob: "**/*.html"
destination: "spec-previews/${{ github.repository }}/pull/${{ env.PULL_NUMBER }}"
parent: false
gzip: false
headers: |-
content-type: text/html; charset=UTF-8
content-encoding: br
cache-control: no-transform, max-age=30
- name: Post comment
uses: actions/github-script@v7
env:
GCS_BASE: "spec-previews/${{ github.repository }}/pull/${{ env.PULL_NUMBER }}"
with:
script: |
const fs = require("fs");
const baseUrl = `https://storage.googleapis.com/${process.env.GCS_BASE}`;
let body = "<!-- preview-magic-74656 -->Preview:";
for (let headFile of await fs.promises.readdir("upload-compressed/head")) {
if (!headFile.endsWith('.html')) continue;
body += `\n- [${headFile}](${baseUrl}/head/${headFile})`;
const extraLinks =
(await Promise.all(
["diff", "base"]
.map(k => fs.promises.access(`upload-compressed/${k}/${headFile}`)
.then(() => [`[${k}](${baseUrl}/${k}/${headFile})`], () => []))))
.flat();
if (extraLinks.length)
body += ` (${extraLinks.join(" ")})`;
}
console.log(body);
const issue = {...context.repo, issue_number: process.env.PULL_NUMBER};
const comments = await github.paginate(
github.rest.issues.listComments.endpoint.merge({...issue}));
let comment = comments.find(
comment => comment.body.includes("<!-- preview-magic-74656 -->"));
if (comment) {
await github.rest.issues.updateComment({...issue, comment_id: comment.id, body});
} else {
await github.rest.issues.createComment({...issue, body});
}