ci.yml

name: GitHub CI

on:
  pull_request:
  push:
    branches:
      - master
  workflow_dispatch:
  schedule:
    - cron: 0 0 * * 0

defaults:
  run:
    shell: 'bash -Eeuo pipefail -x {0}'

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

permissions:
  contents: read

jobs:

  generate-jobs:
    name: Generate Jobs
    runs-on: ubuntu-latest
    outputs:
      strategy: ${{ steps.generate-jobs.outputs.strategy }}
    steps:
      - uses: actions/checkout@v4
      - uses: docker-library/bashbrew@HEAD
      - id: generate-jobs
        name: Generate Jobs
        run: |
          strategy="$(GENERATE_STACKBREW_LIBRARY='.github/workflows/fake-gsl.sh' "$BASHBREW_SCRIPTS/github-actions/generate.sh")"
          strategy="$(.github/workflows/munge-build.sh -c <<<"$strategy")"
          strategy="$(.github/workflows/munge-unstable.sh -c <<<"$strategy")"

          EOF="EOF-$RANDOM-$RANDOM-$RANDOM"
          echo "strategy<<$EOF" >> "$GITHUB_OUTPUT"
          jq <<<"$strategy" . | tee -a "$GITHUB_OUTPUT"
          echo "$EOF" >> "$GITHUB_OUTPUT"

  test:
    needs: generate-jobs
    strategy: ${{ fromJson(needs.generate-jobs.outputs.strategy) }}
    name: ${{ matrix.name }}
    runs-on: ${{ matrix.os }}
    env:
      BASHBREW_ARCH: amd64 # TODO consider using "$BASHBREW_SCRIPTS/bashbrew-host-arch.sh" ? (would make it harder to force i386 in our matrix too, so explicit is probably better)
    steps:
      - uses: actions/checkout@v4
      - uses: docker-library/bashbrew@HEAD # build.sh needs bashbrew
      - name: Prepare Environment
        run: ${{ matrix.runs.prepare }}
      - name: Pull Dependencies
        run: ${{ matrix.runs.pull }}
      - name: Build ${{ matrix.name }}
        run: ${{ matrix.runs.build }}
      - name: History ${{ matrix.name }}
        run: ${{ matrix.runs.history }}
      - name: Test ${{ matrix.name }}
        run: ${{ matrix.runs.test }}
      - name: '"docker images"'
        run: ${{ matrix.runs.images }}
      - name: Git Diff # see "munge-build.sh"
        run: |
          if git diff --exit-code */*/Dockerfile.builder; then # see "hack-unstable.sh" (and "munge-unstable.sh")
            git diff --exit-code
          else
            # for unstable builds, let's leave this in but purely informational (instead of causing CI to fail)
            git diff
          fi