gen.yml

name: Build

permissions:
  contents: write

on:
  schedule:
    - cron: 0 4 * * * # 4:00 UTC everyday
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.13"]
    steps:
      - uses: actions/checkout@v4

      - name: setup Python with uv
        id: setup-uv
        uses: astral-sh/setup-uv@v5
        with:
          version: latest
          python-version: ${{ matrix.python-version }}
          enable-cache: true
          prune-cache: false # do not remove pre-built wheels
          ignore-nothing-to-cache: true
          cache-dependency-glob: "**/pyproject.toml"

      - name: hint on cache hit
        if: steps.setup-uv.outputs.cache-hit == 'true'
        run: echo "Hit cache"

      - name: install dependencies
        run: uv pip install .

      - name: execute py script
        run: python cngal_calendar.py

      - name: check release changes
        id: check_changes
        run: if [[ $(git diff --name-only HEAD) == *"output/cngal-release.txt"* ]]; then echo "changes=true" > "$GITHUB_OUTPUT"; else echo "changes=false" > "$GITHUB_OUTPUT"; fi

      - name: commit files only if new release is available
        if: ${{ steps.check_changes.outputs.changes == 'true' }}
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git add -A
          git commit -m "ics: update release calendar" -a

      - name: push changes
        if: ${{ steps.check_changes.outputs.changes == 'true' }}
        uses: ad-m/github-push-action@master
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: main