name: android

# Android build environments (docker/noble/android/rtabmap_apiXX).
# amd64 only, so a single native runner and no manifest juggling.
# Note: these build FROM introlab3it/rtabmap:android-noble-deps, which is not
# produced by any workflow; it is still built and pushed by hand.

on:
  push:
    branches:
      - 'master'
    paths: &android_paths
      # What an Android build actually compiles: CMakeLists.txt adds only
      # utilite, corelib and app under IF(ANDROID), and rtabmap.bash builds with
      # WITH_OPENGV=OFF, BUILD_EXAMPLES=OFF, BUILD_TOOLS=OFF.
      - 'CMakeLists.txt'
      - 'Version.h.in'
      - 'RTABMapConfig.cmake.in'
      - 'cmake_uninstall.cmake.in'
      - 'cmake_modules/**'
      - 'utilite/**'
      - 'corelib/**'
      - 'app/**'
      - 'docker/noble/android/**'
      - '.github/workflows/android.yml'
  pull_request:
    branches:
      - '**'
    paths: *android_paths
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  docker:
    # A manual dispatch is honored only on master, the only ref we push from.
    if: ${{ github.event_name != 'workflow_dispatch' || github.ref == 'refs/heads/master' }}
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        docker_tag: [android23, android24, android26, android30]
        include:
        - docker_tag: android23
          docker_tags: |
            introlab3it/rtabmap:android23
            introlab3it/rtabmap:tango
          api_version: 23
        - docker_tag: android24
          docker_tags: |
            introlab3it/rtabmap:android24
          api_version: 24
        - docker_tag: android26
          docker_tags: |
            introlab3it/rtabmap:android26
          api_version: 26
        - docker_tag: android30
          docker_tags: |
            introlab3it/rtabmap:android30
          api_version: 30

    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      -
        name: Login to DockerHub
        # Only needed when pushing; skipped on pull requests (secrets are
        # unavailable for fork PRs and we don't push there anyway).
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          platforms: linux/amd64
          file: ./docker/noble/android/rtabmap_apiXX/Dockerfile
          build-args: |
            API_VERSION=${{ matrix.api_version }}
          tags: ${{ matrix.docker_tags }}
          cache-from: type=registry,ref=introlab3it/rtabmap:${{ matrix.docker_tag }}
          cache-to: type=inline