ci.yml

name: CI/CD

on:
  pull_request:
    types: [ opened, synchronize ]
    branches: [ main ]
  push:
    branches: [ main ]

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      re_image: ${{ steps.create-inputs.outputs.re_image }}
      re_dockerfile: ${{ steps.create-inputs.outputs.re_dockerfile }}
      do_build: ${{ steps.create-inputs.outputs.do_build }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v41
        with:
          json: true
          quotepath: false
      - name: Create inputs
        id: create-inputs
        shell: python {0}
        run: |
          import json
          import os
          import re
          import subprocess
          
          re_image = re_dockerfile = ''
          changed_files = json.loads("${{ steps.changed-files.outputs.all_changed_files }}")
          with open('images.json') as fd:
            builds = json.load(fd)
          
          dockerfiles = list(map(lambda v: v.removesuffix('.dockerfile'), filter(lambda v: re.match('.*dockerfile$', v), changed_files)))
          if len(dockerfiles) > 0:
              re_dockerfile = '|'.join(dockerfiles)
          
          if 'images.json' in changed_files:
              try:
                  data = subprocess.run(['git', 'show', 'HEAD^:images.json'], stdout=subprocess.PIPE).stdout.decode('utf-8')
                  images = json.loads(data)
                  with open('images.json', 'r') as fd:
                      new_images = json.load(fd)
                  diff = list(filter(lambda v: v not in images, new_images))
                  if len(diff) > 0:
                      re_image = '|'.join(map(lambda v: f"{v['image']}:{v['tag']}", diff))
              except json.decoder.JSONDecodeError:
                  re_image = '.*'
          
          with open(os.environ['GITHUB_OUTPUT'], 'a') as output:
            if re_dockerfile == re_image:
              print('do_build=false', file=output)
              print('::notice title=::no image build changes detected')
            else:
              print('do_build=true', file=output)
              print(f're_dockerfile=({re_dockerfile})', file=output)
              print(f're_image=({re_image})', file=output)

  build:
    needs: prepare
    if: needs.prepare.outputs.do_build == 'true'
    uses: ./.github/workflows/template_build_deploy.yml
    secrets: inherit
    with:
      image: ${{ needs.prepare.outputs.re_image }}
      dockerfile: ${{ needs.prepare.outputs.re_dockerfile }}
      refresh: true
      acceptance_test: ${{ github.event_name == 'pull_request' && 'puppetlabs/puppetlabs-stdlib' || '' }}