name: Test Build

on:
  pull_request:

jobs:
  build:
    name: Test ${{ matrix.arch }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        arch:
          - arc_archs
          - arm_cortex-a9_vfpv3-d16
          - mips_24kc
          - powerpc_464fp
          - powerpc_8540
        runtime_test: [false]
        include:
          - arch: aarch64_cortex-a53
            runtime_test: true
          - arch: arm_cortex-a15_neon-vfpv4
            runtime_test: true
          - arch: i386_pentium-mmx
            runtime_test: true
          - arch: x86_64
            runtime_test: true

    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Determine branch name
        run: |
          BRANCH="${GITHUB_BASE_REF#refs/heads/}"
          echo "Building for $BRANCH"
          echo "BRANCH=$BRANCH" >> $GITHUB_ENV

      - name: Determine changed packages
        run: |
          # only detect packages with changes
          PKG_ROOTS=$(find . -name Makefile | grep -v ".*/src/Makefile" | sed -e 's@./\(.*\)/Makefile@\1/@')
          CHANGES=$(git diff --diff-filter=d --name-only origin/$BRANCH)

          for ROOT in $PKG_ROOTS; do
            for CHANGE in $CHANGES; do
              if [[ "$CHANGE" == "$ROOT"* ]]; then
                PACKAGES+=$(echo "$ROOT" | sed -e 's@.*/\(.*\)/@\1 @')
                break
              fi
            done
          done

          # fallback to test packages if nothing explicitly changes this is
          # should run if other mechanics in packages.git changed
          PACKAGES="${PACKAGES:-vim tmux bmon}"

          echo "Building $PACKAGES"
          echo "PACKAGES=$PACKAGES" >> $GITHUB_ENV

      - name: Build
        uses: openwrt/gh-action-sdk@v1
        env:
          ARCH: ${{ matrix.arch }}-${{ env.BRANCH }}
          FEEDNAME: packages_ci

      - name: Move created packages to project dir
        run: cp bin/packages/${{ matrix.arch }}/packages_ci/*.ipk . || true

      - name: Store packages
        uses: actions/upload-artifact@v2
        with:
          name: ${{ matrix.arch}}-packages
          path: "*.ipk"

      - name: Store logs
        uses: actions/upload-artifact@v2
        with:
          name: ${{ matrix.arch}}-logs
          path: logs/

      - name: Remove logs
        run: sudo rm -rf logs/ || true

      - name: Register QEMU
        if: ${{ matrix.runtime_test }}
        run: |
          sudo docker run --rm --privileged aptman/qus -s -- -p

      - name: Build Docker container
        if: ${{ matrix.runtime_test }}
        run: |
          docker build -t test-container --build-arg ARCH .github/workflows/
        env:
          ARCH: ${{ matrix.arch }}

      - name: Test via Docker container
        if: ${{ matrix.runtime_test }}
        run: |
          docker run --rm -v $GITHUB_WORKSPACE:/ci test-container