dispatch-pr-build.yml

name: Request dispatched PR Build

on:
  pull_request:
    types: [ opened, reopened, synchronize, edited ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  dispatchedPR:
    name: Dispatch wait and check
    runs-on: ubuntu-latest

    steps:
      - name: Check if PR edit changed deps string
        if: ${{ github.event.action == 'edited' }}
        id: pr-string-changed
        continue-on-error: true
        run: |
          old_pr_string=$(grep -P '^/(jenkins-pr-deps|jpd|prd)' <<< "$OLD_PR_BODY" | \
            grep -ioP '(Graylog2/\S+?#|https?://github.com/Graylog2/\S+?/pull/)[0-9]+' || true)
          new_pr_string=$(grep -P '^/(jenkins-pr-deps|jpd|prd)' <<< "$NEW_PR_BODY" | \
            grep -ioP '(Graylog2/\S+?#|https?://github.com/Graylog2/\S+?/pull/)[0-9]+' || true)
          if [ "$old_pr_string" != "$new_pr_string" ]; then
            echo "PR deps string change detected: \"$old_pr_string\" -> \"$new_pr_string\""
            echo "Re-triggering PR build..."
            exit 0
          fi
          exit 1
        env:
          OLD_PR_BODY: "${{ github.event.changes.body.from }}"
          NEW_PR_BODY: "${{ github.event.pull_request.body }}"

      - name: Dispatch job to graylog-project-internal
        if: ${{ github.event.action != 'edited' || steps.pr-string-changed.outcome == 'success' }}
        run: >
          gh workflow run -R Graylog2/graylog-project-internal pr-build.yml --ref master
          -f caller_repo=${{ github.repository }}
          -f caller_pr_nr=${{ github.event.number }}
          -f caller_base_branch=${{ github.base_ref || github.ref_name }}
          -f caller_head_branch=${{ github.head_ref }}
          -f head_sha=${{ github.event.pull_request.head.sha }}
          -f initial_actor="${{ github.actor }}/${{ github.triggering_actor }}"
        env:
          GITHUB_TOKEN: ${{ secrets.PAT_GRAYLOG_PROJECT_INTERNAL_WORKFLOW_RW }}

      - name: Give dispatched build time to add its status
        run: sleep 20
        # This is mostly cosmetic. If this workflow finishes before the dispatched
        # build creates the status on the PR, the build will show up green for a while.