# build docker images on:
# * every pull request
# * push to master
# * stable release published
# * tag name is:
#   - commit sha if pull request
#   - 'latest' if push to master
#   - release name if release

# pushes to registry if:
# * is not a pull request
# * is master branch
# * is the result of release

# builds all nuttx targets and deploys metadata

name: Build docker

on:
  release:
    types: [released]
  push:
    branches:
      - 'master'
  pull_request:

jobs:
  set_docker_tag:
    name: Set docker tag
    runs-on: ubuntu-latest
    env:
      DOCKER_TAG: "px4io/px4-dev"
    outputs:
      docker_tag: ${{ steps.set-outputs.outputs.docker_tag }}

    steps:
      - name: Set pull request docker tag
        if: github.event_name == 'pull_request'
        run: echo "DOCKER_TAG=px4io/px4-dev:${{ github.sha }}" >> $GITHUB_ENV

      - name: Set push docker tag
        if: github.event_name == 'push'
        run: echo "DOCKER_TAG=px4io/px4-dev:latest" >> $GITHUB_ENV

      - name: Set release docker tag
        if: github.event_name == 'release'
        run: echo "DOCKER_TAG=px4io/px4-dev:${{ github.event.release.name }}" >> $GITHUB_ENV

      - name: Set docker tag outputs
        id: set-outputs
        run: echo "::set-output name=docker_tag::$DOCKER_TAG"

  build_docker:
    name: Build Docker image
    runs-on: ubuntu-latest
    needs: set_docker_tag

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Login to Github Registry
        uses: docker/login-action@v1
        if: github.event_name == 'push'
        with:
          registry: ghrc.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up image builder
        uses: docker/setup-buildx-action@v1

      - name: Build image
        uses: docker/build-push-action@v2
        id: docker_build
        with:
          file: Tools/setup/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ needs.set_docker_tag.outputs.docker_tag }}
          outputs: type=tar,dest=/tmp/px4_docker_image.tar

      - name: Save container to artifacts
        uses: actions/upload-artifact@v2
        with:
          name: px4_docker_image
          path: /tmp/px4_docker_image.tar

      - name: Push to Github Registry
        uses: docker/build-push-action@v2
        if: github.event_name == 'push'

      - name: Image Digest
        run: echo ${{ steps.docker_build.outputs.digest }}

  list_targets:
    name: Generate target list
    runs-on: ubuntu-latest
    needs: build_docker
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}

    steps:
      - name: Checkout Code
        uses: actions/checkout@v2

      - name: Setup Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.9

      #- name: Install Python packages
        #run: pip install -r Tools/setup/requirements.txt
        #run: pip install kconfiglib

      - id: set-matrix
        name: Get all nuttx targets
        run: echo "::set-output name=matrix::$(./Tools/generate_board_targets_json.py -a)"

  build_px4:
    name: Build targets with Docker
    runs-on: ubuntu-latest
    needs: [list_targets, set_docker_tag]
    #strategy:
      #matrix: ${{ fromJson(needs.enumerate_targets.outputs.matrix) }}

    steps:
      - name: Get container from artifacts
        uses: actions/download-artifact@v2
        with:
          name: px4_docker_image
          path: /tmp

      - name: Load Docker image
        run: |
          docker import /tmp/px4_docker_image.tar ${{ needs.set_docker_tag.outputs.docker_tag }}
          docker image ls -a

      - name: Checkout Code
        uses: actions/checkout@v2

      - name: Build targets
        #run: |
          #docker run --rm -w "${GITHUB_ACTION_PATH}" \
            #--env=LOCAL_USER_ID="$(id -u)" \
            #--volume=/tmp:/tmp:rw \
            #--volume=${GITHUB_ACTION_PATH}:${GITHUB_ACTION_PATH}:rw \
            #px4io/px4-dev:${{ needs.set_docker_tag.outputs.docker_tag }} /bin/bash -c "make ${{ matrix.target }}"

        run: |
          docker run --rm -w ${{ env.GITHUB_ACTION_PATH }} \
            --env=LOCAL_USER_ID="$(id -u)" \
            --volume=/tmp:/tmp:rw \
            --volume=${{ env.GITHUB_ACTION_PATH }}:${{ env.GITHUB_ACTION_PATH }}:rw \
            ${{ needs.set_docker_tag.outputs.docker_tag }} /bin/bash -c "make px4_fmu-v6x"