cookbook_pr_trigger.yaml

name: Trigger preproc on comment with "/regenerate-cache"

on:
  issue_comment:
    types: [created]

jobs:
  trigger:
    if: ${{ github.event.issue.pull_request }}
    runs-on: ubuntu-latest

    steps:
      - name: Dispatch preproc
        if: ${{ github.event.issue.pull_request }}
        uses: actions/github-script@v6
        with:
          script: |
            const owner = context.repo.owner
            const repo = context.repo.repo
            const pr_number = context.issue.number

            const comment = context.payload.comment

            // Return early if comment is not the trigger phrase
            if (comment.body != '/regenerate-cache') {
              console.log("Comment is not trigger phrase")
              return
            }

            const commenter = await github.request(
              'GET /repos/{owner}/{repo}/collaborators/{username}/permission',
              {
                owner: owner,
                repo: repo,
                username: comment.user.login,
                headers: {
                  'X-GitHub-Api-Version': '2022-11-28'
                }
              },
            )

            const commenter_can_push = commenter.data.user.permissions.push

            // Return early if comment sender doesn't have push rights
            if (!commenter_can_push) {
              console.log("User does not have push permissions")
              return
            }

            const pr = await github.rest.pulls.get({
              pull_number: pr_number,
              owner: owner,
              repo: repo,
            })

            const ref = pr.data.head.ref

            // We didn't return early, so dispatch the workflow
            const dispatch = await github.request(
              'POST /repos/{owner}/{repo}/actions/workflows/{workflow_id}/dispatches',
              {
                owner: owner,
                repo: repo,
                workflow_id: 'cookbook_preproc.yaml',
                ref: ref,
                inputs: {pr_number: pr_number.toString()},
                headers: {
                  'X-GitHub-Api-Version': '2022-11-28'
                }
              },
            )

            console.log(dispatch)