Write prerelease comment #157

	name: Write prerelease comment

	on:
	workflow_run:
	workflows: ['Create Pull Request Prerelease']
	types:
	- completed

	jobs:
	comment:
	if: ${{ github.repository_owner == 'cloudflare' }}
	runs-on: ubuntu-latest
	name: Write comment to the PR
	steps:
	- name: 'Put PR and workflow ID on the environment'
	uses: actions/github-script@v5
	with:
	script: \|
	const allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
	owner: context.repo.owner,
	repo: context.repo.repo,
	run_id: context.payload.workflow_run.id,
	});
	for (const artifact of allArtifacts.data.artifacts) {
	// Extract the PR number from the artifact name
	const match = /^npm-package-itty-router-openapi-(\d+)$/.exec(artifact.name);
	if (match) {
	require("fs").appendFileSync(
	process.env.GITHUB_ENV,
	`\nWORKFLOW_RUN_PR=${match[1]}` +
	`\nWORKFLOW_RUN_ID=${context.payload.workflow_run.id}`
	);
	break;
	}
	}
	- name: 'Comment on PR with Link'
	uses: marocchino/sticky-pull-request-comment@v2
	with:
	number: ${{ env.WORKFLOW_RUN_PR }}
	message: \|
	🧪 A prerelease is available for testing 🧪

	You can install this latest build in your project with:

	```sh
	npm install --save https://prerelease-registry.devprod.cloudflare.dev/itty-router-openapi/runs/${{ env.WORKFLOW_RUN_ID }}/npm-package-itty-router-openapi-${{ env.WORKFLOW_RUN_PR }}
	```

	Or you can immediately run this with `npx`:

	```sh
	npx https://prerelease-registry.devprod.cloudflare.dev/itty-router-openapi/runs/${{ env.WORKFLOW_RUN_ID }}/npm-package-itty-router-openapi-${{ env.WORKFLOW_RUN_PR }}
	```

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