namuan/fuzzy-swagger

name: Autoupdate project structure
on:
  workflow_dispatch:
  schedule:
    - cron: "0 0 * * *"  # at the end of every day

jobs:
  auto-update-project:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.9

      - name: Install dependencies
        run: python -m pip install cruft poetry jello tabulate

      - name: Update project structure
        run: |
          cruft update -y

      - name: Check if there are changes
        id: changes
        uses: UnicornGlobal/has-changes-action@v1.0.11

      - name: apply additional changes and fixes
        if: steps.changes.outputs.changed == 1
        run: |
          poetry lock --no-update  # add new dependencies
          poetry install
          poetry run pre-commit run -a || true  # we have to fix other issues manually

      - name: Get template versions
        id: get_versions
        if: steps.changes.outputs.changed == 1
        shell: bash
        run: |
          echo ::set-output name=current_version::$(git show HEAD:.cruft.json | jello -r "_['commit'][:8]")
          echo ::set-output name=next_version::$(cat .cruft.json | jello -r "_['commit'][:8]")

      - name: Get changelog
        id: get_changelog
        if: steps.changes.outputs.changed == 1
        shell: bash
        run: |
          export TEMPLATE=$(cat .cruft.json | jello -r "_['template']")
          git clone $TEMPLATE /tmp/template
          cd /tmp/template
          body=$((echo "Date;Change;Hash"; git log --pretty=format:"%as;%s;%h" ${{ steps.get_versions.outputs.current_version }}..${{ steps.get_versions.outputs.next_version }}) | tabulate --header --format github -s ';' -)
          body=$(cat <<EOF
          Changes from $TEMPLATE

          $body
          EOF
          )
          body="${body//'%'/'%25'}"
          body="${body//$'\n'/'%0A'}"
          body="${body//$'\r'/'%0D'}"
          echo ::set-output name=changelog::$body

      # behaviour if PR already exists: https://github.com/marketplace/actions/create-pull-request#action-behaviour
      - name: Create Pull Request
        env:
          # a PAT is required to be able to update workflows
          GITHUB_TOKEN: ${{ secrets.AUTO_UPDATE_GITHUB_TOKEN }}
        if: ${{ steps.changes.outputs.changed == 1 && env.GITHUB_TOKEN != 0 }}
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ env.GITHUB_TOKEN }}
          commit-message: >-
            chore: update project structure to ${{ steps.get_versions.outputs.next_version }}
          title: "[Actions] Auto-Update cookiecutter template"
          body: ${{ steps.get_changelog.outputs.changelog }}
          branch: chore/auto-update-project-from-template
          delete-branch: true