name: Nightly Release

on:
  schedule:
    - cron: "0 0 * * *"
  workflow_dispatch: {}

jobs:
  nightly-release:
    name: Nightly Build and Release Docker image (if code changed in 24h)
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Check if code has changed within 24 hours
        id: code-change
        run: |
          if [[ $(git rev-list --after="24 hours" --first-parent HEAD) ]]; then
            echo "should-run=true" >> $GITHUB_OUTPUT
          else
            echo "should-run=false" >> $GITHUB_OUTPUT
          fi

      - name: Login into GitHub Container Registry
        if: steps.code-change.outputs.should-run == 'true'
        run: echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin

      - name: Build Docker image
        if: steps.code-change.outputs.should-run == 'true'
        run: |
          docker build \
          -t "ghcr.io/${GITHUB_REPOSITORY}:${GITHUB_SHA:0:7}" \
          -t "ghcr.io/${GITHUB_REPOSITORY}:nightly" .

      - name: Release Docker image
        if: steps.code-change.outputs.should-run == 'true'
        run: |
          docker push "ghcr.io/${GITHUB_REPOSITORY}:${GITHUB_SHA:0:7}"
          docker push "ghcr.io/${GITHUB_REPOSITORY}:nightly