# Workflow that builds libabvif with aom and libyuv, also builds MP4box,
# and runs tests with "golden" in their name. Test results are saved as artifacts
# which can be downloaded from GitHub'S UI or with 'gh run download'.

name: CI Linux Golden Tests
on: [push, pull_request]

permissions:
  contents: read

# Cancel the workflow if a new one is triggered from the same PR, branch, or tag, except on main.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

jobs:
  build-shared-run-golden-tests:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        include:
          - runs-on: ubuntu-latest
            compiler: gcc
            gcc: 13

    steps:
    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
    - name: Set GCC & G++ compiler (on Linux)
      run: echo "CC=gcc-${{matrix.gcc}}" >> $GITHUB_ENV && echo "CXX=g++-${{matrix.gcc}}" >> $GITHUB_ENV
    - uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5.1.0
      with:
        python-version: '3.x'

    - name: Cache external dependencies
      id: cache-ext
      uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
      with:
        path: ext
        key: ${{ runner.os }}-golden-tests-${{ hashFiles('ext/aom.cmd', 'ext/libyuv.cmd', 'ext/libxml2.cmd', 'ext/mp4box.sh') }}
    - name: Setup cmake
      uses: jwlawson/actions-setup-cmake@959f1116cf9f1ae42fff8ec1a4aaae6d4a0e348b
      with:
        # CMake 3.18 or higher is required for libxml2
        cmake-version: '3.18.x'
    - name: Print cmake version
      run: cmake --version
    - uses: ilammy/setup-nasm@13cbeb366c45c4379d3478cdcbadd8295feb5028 # v1.5.1
    - uses: seanmiddleditch/gha-setup-ninja@8b297075da4cd2a5f1fd21fe011b499edf06e9d2 # v4
    - name: Build aom
      if: steps.cache-ext.outputs.cache-hit != 'true'
      working-directory: ./ext
      run: bash -e aom.cmd
    - name: Build libyuv
      if: steps.cache-ext.outputs.cache-hit != 'true'
      working-directory: ./ext
      run: bash -e libyuv.cmd
    - name: Build libxml2
      if: steps.cache-ext.outputs.cache-hit != 'true'
      working-directory: ./ext
      run: bash -e libxml2.cmd
    - name: Build mp4box
      if: steps.cache-ext.outputs.cache-hit != 'true'
      working-directory: ./ext
      run: bash -e mp4box.sh

    - name: Prepare libavif (cmake)
      run: >
        mkdir build && cd build

        cmake .. -G Ninja
        -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF
        -DAVIF_CODEC_AOM=LOCAL -DAVIF_LIBYUV=LOCAL
        -DAVIF_BUILD_EXAMPLES=ON -DAVIF_BUILD_APPS=ON
        -DAVIF_ENABLE_EXPERIMENTAL_GAIN_MAP=ON
        -DAVIF_LOCAL_LIBXML2=ON
        -DAVIF_BUILD_TESTS=ON -DAVIF_ENABLE_GOLDEN_TESTS=ON
        -DAVIF_ENABLE_GTEST=OFF -DAVIF_ENABLE_WERROR=ON
        -DGOLDEN_TESTS_OUTPUT_DIR=${{ runner.temp }}/golden_tests
    - name: Build libavif (ninja)
      working-directory: ./build
      run: ninja
    - name: Run AVIF golden tests
      working-directory: ./build
      # Runs test that have "golden" in their name.
      run: ctest -j $(getconf _NPROCESSORS_ONLN) --output-on-failure -R golden

    # See https://docs.github.com/en/actions/using-workflows/storing-workflow-data-as-artifacts
    - name: Archive golden tests output for debugging
      if: failure()
      uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
      with:
        name: golden-tests-output
        path: ${{ runner.temp }}/golden_tests/**/*

    # Print instructions to help fix the tests.
    - name: How to fix failing tests
      if: failure()
      run: >
        echo "If the tests fail, download the test results from the Artifacts list at https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }} or with:
          gh run download --dir /tmp/golden-tests-output-${{ github.run_id }} --repo ${{ github.repository }} --name golden-tests-output ${{ github.run_id }}
        Update all files with:
          cp /tmp/golden-tests-output-${{ github.run_id }}/*/*.xml ~/git/libavif/tests/data/goldens
        Or look at detailed instructions in the README.txt file in the test ouputs."