name: CI
concurrency:
  group: ${{ github.head_ref }}
  cancel-in-progress: true

on:
  pull_request:
    types:
      - opened
      - reopened
      - labeled
      - unlabeled
      - synchronize
    branches:
      - main
      - stable-*
    tags:
      - '*'

jobs:
  auto_changelog:
    name: changelog / black formatting
    if: "!contains(github.event.pull_request.labels.*.name, 'skip-changelog')"
    runs-on: ubuntu-latest
    steps:
      - name: checkout fork
        uses: actions/checkout@v3
        with:
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.head_ref }}
          fetch-depth: "0"

      - name: Set up Python '3.9'
        uses: actions/setup-python@v4
        with:
          python-version: '3.9'

      # black should be defined as input parameter of the action
      - name: Install python dependencies
        run: |
          pip install -U pyyaml pygithub tox
        shell: bash

      - name: Download script
        run: >-
          curl -o /tmp/add_changelog.py
          https://raw.githubusercontent.com/abikouo/gha_testing/main/tools/add_changelog.py

      - name: Validate or add pull request changelog
        run:
          python3 /tmp/add_changelog.py
        env:
          PR_REPOSITORY: ${{ github.repository }}
          PR_NUMBER: ${{ github.event.pull_request.number }}

      - name: Run black check
        id: black_check
        continue-on-error: true
        run: |
          tox -e black -vv 2>/tmp/black_check.txt
        shell: bash

      - name: Run black formatting
        run: |
          tox -e black_format -vv -- $(grep "would reformat" /tmp/black_check.txt | cut -d ' ' -f3 | tr '\n' ' ')
        shell: bash
        if: steps.black_check.outcome != 'success'

      - name: (debug only) list files in diff
        run: |
          git status
        shell: bash
        if: steps.black_check.outcome != 'success'

      - name: commit and push changes
        id: commit
        uses: stefanzweifel/git-auto-commit-action@v4
        with:
          commit_message: "automated changes for changelog and/or black formatting"