emscripten.yml

name: Emscripten build

on: [push, pull_request]

jobs:
  emscripten_build:
    name: Emscripten build
    runs-on: ubuntu-latest
    concurrency:
      group: emscripten-build

    steps:
    - uses: actions/checkout@v4
    - name: Install Emscripten
      run: |
        sudo apt update
        sudo apt -q install emscripten pandoc
    - name: Find Git version
      id: version
      run: |
        if git describe --exact-match --tags >/dev/null; then
          VERSION=$(git describe --exact-match --tags)
          VERSION=${VERSION/#sdl-sopwith-/}
        else
          VERSION=git-$(git rev-parse --short HEAD)
        fi
        echo "VERSION=$VERSION-js" >> $GITHUB_OUTPUT
        # Patch the version in configure.ac:
        sed -i "s/\(AC_INIT([^,]*, \)\[[^]]*\], /\1[$VERSION], /" \
            configure.ac
    - name: build
      run: ./embuild.sh
    - name: make pkg
      run: |
        make -C pkg/emscripten
    - name: Upload build
      uses: actions/upload-artifact@v4
      with:
        path: "pkg/emscripten/page"
        name: sdl-sopwith-${{steps.version.outputs.VERSION}}

    - name: Identify deploy folder
      id: deploy_folder
      run: |
        case ${{ github.ref }} in
          refs/heads/*)
            echo "${{github.ref}}" | \
                sed "s/refs.heads./DEPLOY_FOLDER=branch\//; s/.merge//"
            ;;
          refs/pull/*/merge)
            sed "s/refs.pull./DEPLOY_FOLDER=prs\//; s/.merge//"
            pr=$(echo "${{github.ref}}" | sed "s/refs.pull.//; s/.merge//")
            echo "DEPLOY_FOLDER=/prs/$pr"
            echo "PR_NUMBER=$pr"
            ;;
          refs/tags/*)
            echo "${{github.ref}}" | sed "s/refs.tags./DEPLOY_FOLDER=tags\//"
            ;;
          *)
            ;;
        esac | tee "$GITHUB_OUTPUT"
    - name: Deploy
      if: ${{steps.deploy_folder.outputs.DEPLOY_FOLDER != ''}}
      uses: JamesIves/github-pages-deploy-action@v4
      with:
        folder: "pkg/emscripten/page"
        repository-name: "fragglet/sdl-sopwith-builds"
        token: "${{secrets.SDL_SOPWITH_LATEST_SECRET}}"
        target-folder: "${{steps.deploy_folder.outputs.DEPLOY_FOLDER}}"
        clean: true
        commit-message: "Build from fragglet/sdl-sopwith@${{github.sha}} (Version ${{steps.version.outputs.VERSION}})"
    - name: Comment PR
      if: ${{ github.event_name == 'pull_request' }}
      uses: thollander/actions-comment-pull-request@v3
      with:
        message: |
          Thanks for your pull request! A build of your change can be found [here](https://fragglet.github.io/sdl-sopwith-builds${{steps.deploy_folder.outputs.DEPLOY_FOLDER}}/sopwith.html) for people to try.
        pr_number: ${{steps.deploy_folder.outputs.PR_NUMBER}}