build.yml

name: Build
run-name: "${{ github.event_name == 'schedule' && 'Daily master build' || format('Release build for {0}', github.ref) }}"

permissions:
  contents: write

on:
  push:
    tags:
      - '*'
  schedule:
    - cron: '0 0 * * *'

jobs:

  prepare-docker:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v4

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3

    - name: Build and export
      uses: docker/build-push-action@v5
      with:
        context: .
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: builder-image:latest
        outputs: type=docker,dest=/tmp/builder-image.tar

    - name: Upload artifact
      uses: actions/upload-artifact@v3
      with:
        name: builder-image
        path: /tmp/builder-image.tar

  setup-vars:
    runs-on: ubuntu-latest
    steps:
      - name: Setup matrix source
        id: setup-vars
        run: |
          SOURCES='
            {"name": "29.1", "repo": "emacs-mirror/emacs", ref: "emacs-29.1" },
            {"name": "29.1_native_json_rpc", "repo": "blahgeek/emacs", ref: "b8e9c30dcae19eaa8deed9bd594e84d5cf6244cb" }
          '
          if [ $GITHUB_EVENT_NAME = "schedule" ]; then
            SOURCES='
              {"name": "master", "repo": "emacs-mirror/emacs", ref: "master" }
            '
          fi
          echo sources=[$SOURCES] >> $GITHUB_OUTPUT
          echo datetimestr=$(date +%Y%m%d-%H%M) >> $GITHUB_OUTPUT
    outputs:
      sources: ${{ steps.setup-vars.outputs.sources }}
      datetimestr: ${{ steps.setup-vars.outputs.datetimestr }}

  build-emacs:
    runs-on: ubuntu-latest
    needs:
      - prepare-docker
      - setup-vars

    strategy:
      matrix:
        source: ${{ fromJson(needs.setup-vars.outputs.sources) }}
        build_with_x11: [ "yes", "no" ]

    steps:
    - name: Install fuse
      run: sudo apt-get install -y fuse libfuse2

    - name: Checkout
      uses: actions/checkout@v4

    - name: Download emacs source from repo
      uses: actions/checkout@v4
      with:
        repository: ${{ matrix.source.repo }}
        ref: ${{ matrix.source.ref }}
        path: emacs-src

    - name: Download artifact
      uses: actions/download-artifact@v2
      with:
        name: builder-image
        path: /tmp

    - name: Load image
      run: |
        docker load -i /tmp/builder-image.tar
        docker image ls -a

    - name: Run and package
      run: ./run-and-package.sh builder-image:latest ./emacs-src BUILD_WITH_X11=${{ matrix.build_with_x11 }}

    - name: Upload binary to release
      uses: svenstaro/upload-release-action@v2
      with:
        repo_token: ${{ secrets.GITHUB_TOKEN }}
        file: dist/Emacs.AppImage
        asset_name: Emacs-${{ matrix.source.name }}-${{ matrix.build_with_x11 == 'yes' && 'x11' || 'nox' }}.AppImage
        tag: ${{ github.event_name == 'schedule' && format('daily-master-build-{0}', needs.setup-vars.outputs.datetimestr) || github.ref }}
        release_name: "${{ github.event_name == 'schedule' && 'Daily master build' || 'Release build' }} ${{ needs.setup-vars.outputs.datetimestr }}"
        prerelease: ${{ github.event_name == 'schedule' }}
        make_latest: ${{ github.event_name != 'schedule' }}