# Re-runs a test run once when one of its jobs ran out of time
# (evo.testsuites#25, part 2).
#
# A timeout usually means a stuck runner or a network stall rather than a
# broken test, so the first one gets a second chance. A second timeout stays
# red, so a real hang still reaches a person. A run cancelled by hand, or by a
# newer push, is left alone: only a job whose own record says it "exceeded the
# maximum execution time" counts.
#
# Costs nothing on an ordinary run. The job's `if` is false for every run that
# ended any other way, and a job skipped by its `if` never starts a runner.
name: re-run a timed-out test run

on:
  workflow_run:
    workflows: ["tests"]
    types: [completed]

permissions:
  actions: write
  checks: read

jobs:
  rerun:
    if: >-
      github.event.workflow_run.run_attempt == 1 &&
      (github.event.workflow_run.conclusion == 'cancelled' ||
       github.event.workflow_run.conclusion == 'timed_out')
    runs-on: ubuntu-latest
    timeout-minutes: 2
    steps:
      - name: Re-run it if a job ran out of time
        env:
          GH_TOKEN: ${{ github.token }}
          REPO: ${{ github.repository }}
          RUN: ${{ github.event.workflow_run.id }}
        run: |
          timed_out=""
          for job in $(gh api "repos/$REPO/actions/runs/$RUN/jobs" \
              --jq '.jobs[] | select(.conclusion == "cancelled" or .conclusion == "timed_out") | .id'); do
            if gh api "repos/$REPO/check-runs/$job/annotations" --jq '.[].message' \
                | grep -q "exceeded the maximum execution time"; then
              timed_out="$job"
            fi
          done
          if [ -n "$timed_out" ]; then
            echo "Job $timed_out ran out of time. Re-running run $RUN once."
            gh api -X POST "repos/$REPO/actions/runs/$RUN/rerun"
          else
            echo "Run $RUN was cancelled, but not by a timeout. Leaving it."
          fi