name: Test

on:
  push:
    branches:
      - dev
      - Feat/Backend-Direct-GLES
      - Feat/Backend-Direct-Vulkan
  workflow_dispatch:

jobs:
  build-linux:
    runs-on: ubuntu-latest
    env:
      BUILD_DIR: build-linux
      CCACHE_BASEDIR: ${{ github.workspace }}
      CCACHE_COMPRESS: "true"
      CCACHE_DIR: ${{ github.workspace }}/.ccache
      CCACHE_MAXSIZE: 4G
      CCACHE_NOHASHDIR: "true"

    steps:
      - name: Set Swap Space
        uses: pierotofy/set-swap-space@v1.0
        with:
          swap-size-gb: 32

      - name: Checkout repo
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - name: Get CMake
        uses: lukka/get-cmake@v4.3.3

      - name: Restore ccache
        uses: actions/cache@v5
        with:
          path: .ccache
          key: ${{ runner.os }}-test-${{ github.job }}-ccache-${{ github.ref_name }}-${{ github.run_id }}
          restore-keys: |
            ${{ runner.os }}-test-${{ github.job }}-ccache-${{ github.ref_name }}-
            ${{ runner.os }}-test-${{ github.job }}-ccache-

      - name: Prepare Vulkan SDK
        uses: humbletim/setup-vulkan-sdk@v1.2.1
        with:
          vulkan-query-version: 1.4.304.1
          vulkan-components: Vulkan-Headers, Vulkan-Loader
          vulkan-use-cache: true

      - name: Update glslang external sources
        working-directory: 3rdparty/glslang
        run: python update_glslang_sources.py

      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y ccache clang-20 clang++-20 lld-20 libc++-20-dev libc++abi-20-dev libvulkan-dev libegl1-mesa-dev libgles2-mesa-dev libgl1-mesa-dri mesa-vulkan-drivers ninja-build

      - name: Show installed toolchain
        run: |
          ccache --version
          clang-20 --version
          clang++-20 --version
          ld.lld-20 --version || ld.lld --version || true
          dpkg -l 'libc++*' 'libegl*' 'libgles*' 'mesa*' 'vulkan*' || true

      - name: Configure CMake
        run: |
          if [ "${{ secrets.ACTIONS_STEP_DEBUG }}" = "true" ]; then
            BUILD_TYPE=Debug
          else
            BUILD_TYPE=Release
          fi

          cmake -S . -B "${BUILD_DIR}" -G Ninja \
            -DCMAKE_C_COMPILER=clang-20 \
            -DCMAKE_CXX_COMPILER=clang++-20 \
            -DCMAKE_C_COMPILER_LAUNCHER=ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
            -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
            -DMOBILEGL_LOG_ACTIVE_LEVEL=MOBILEGL_LOG_LEVEL_INFO \
            -DMOBILEGL_BUILD_TEST=ON \
            -DMOBILEGL_BUILD_BENCHMARK=ON \
            -DMOBILEGL_BUILD_TRACE_REPLAY=OFF \
            -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON \
            -DBENCHMARK_ENABLE_TESTING=OFF \
            -DCMAKE_POLICY_VERSION_MINIMUM=3.5

      - name: Build
        run: cmake --build "${BUILD_DIR}" --parallel "$(nproc)"

      - name: Show ccache stats
        if: always()
        run: ccache --show-stats

      - name: Package Linux runtime
        run: |
          mkdir -p ci-artifacts
          mapfile -t SHARED_LIBS < <(find "${BUILD_DIR}" -type f \( -name '*.so' -o -name '*.so.*' \) -print | sort)
          tar \
            --exclude='*/CMakeFiles' \
            --exclude='*.o' \
            --exclude='*.a' \
            --exclude='*.ninja*' \
            --exclude='build.ninja' \
            --exclude='cmake_install.cmake' \
            -czf ci-artifacts/mobilegl-linux-runtime.tgz \
            "${BUILD_DIR}/CTestTestfile.cmake" \
            "${BUILD_DIR}/MobileGL/MG_Test" \
            "${BUILD_DIR}/MobileGL/MG_Benchmark" \
            "${SHARED_LIBS[@]}"

      - name: Upload Linux runtime
        uses: actions/upload-artifact@v7
        with:
          name: mobilegl-linux-runtime
          path: ci-artifacts/mobilegl-linux-runtime.tgz
          if-no-files-found: error

  test:
    runs-on: ubuntu-latest
    needs: build-linux

    steps:
      - name: Checkout repo
        uses: actions/checkout@v6

      - name: Get CMake
        uses: lukka/get-cmake@v4.3.3

      - name: Install runtime dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libvulkan1 libegl1 libgles2 libgl1-mesa-dri mesa-vulkan-drivers

      - name: Download Linux runtime
        uses: actions/download-artifact@v8
        with:
          name: mobilegl-linux-runtime
          path: .

      - name: Unpack Linux runtime
        run: tar -xzf mobilegl-linux-runtime.tgz

      - name: Normalize CTest command paths
        run: |
          python - <<'PY'
          from pathlib import Path
          import re

          for path in Path('build-linux').rglob('CTestTestfile.cmake'):
              text = path.read_text()
              text = re.sub(r'"[^"]*/cmake-[^"]*/bin/cmake"', '"cmake"', text)
              path.write_text(text)
          PY

      - name: Test
        working-directory: build-linux
        run: |
          if [ "${{ secrets.ACTIONS_STEP_DEBUG }}" = "true" ]; then
            ctest -V -L unit --no-tests=error
          else
            ctest --output-on-failure -L unit --no-tests=error
          fi

  benchmark:
    runs-on: ubuntu-latest
    needs: build-linux

    steps:
      - name: Checkout repo
        uses: actions/checkout@v6

      - name: Get CMake
        uses: lukka/get-cmake@v4.3.3

      - name: Install runtime dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libvulkan1 libegl1 libgles2 libgl1-mesa-dri mesa-vulkan-drivers

      - name: Download Linux runtime
        uses: actions/download-artifact@v8
        with:
          name: mobilegl-linux-runtime
          path: .

      - name: Unpack Linux runtime
        run: tar -xzf mobilegl-linux-runtime.tgz

      - name: Normalize CTest command paths
        run: |
          python - <<'PY'
          from pathlib import Path
          import re

          for path in Path('build-linux').rglob('CTestTestfile.cmake'):
              text = path.read_text()
              text = re.sub(r'"[^"]*/cmake-[^"]*/bin/cmake"', '"cmake"', text)
              path.write_text(text)
          PY

      - name: Benchmark
        working-directory: build-linux
        run: ctest -V -C Release -L benchmark --no-tests=error

  build-retrace:
    runs-on: ubuntu-latest
    needs:
      - build-linux
      - test
      - benchmark
    env:
      BUILD_DIR: build-retrace
      CCACHE_BASEDIR: ${{ github.workspace }}
      CCACHE_COMPRESS: "true"
      CCACHE_DIR: ${{ github.workspace }}/.ccache
      CCACHE_MAXSIZE: 4G
      CCACHE_NOHASHDIR: "true"
      MOBILEGL_LIBRARY: ${{ github.workspace }}/build-linux/libMobileGL.so

    steps:
      - name: Set Swap Space
        uses: pierotofy/set-swap-space@v1.0
        with:
          swap-size-gb: 32

      - name: Checkout repo
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - name: Get CMake
        uses: lukka/get-cmake@v4.3.3

      - name: Restore ccache
        uses: actions/cache@v5
        with:
          path: .ccache
          key: ${{ runner.os }}-test-${{ github.job }}-ccache-${{ github.ref_name }}-${{ github.run_id }}
          restore-keys: |
            ${{ runner.os }}-test-${{ github.job }}-ccache-${{ github.ref_name }}-
            ${{ runner.os }}-test-${{ github.job }}-ccache-

      - name: Prepare Vulkan SDK
        uses: humbletim/setup-vulkan-sdk@v1.2.1
        with:
          vulkan-query-version: 1.4.304.1
          vulkan-components: Vulkan-Headers, Vulkan-Loader
          vulkan-use-cache: true

      - name: Update glslang external sources
        working-directory: 3rdparty/glslang
        run: python update_glslang_sources.py

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y ccache clang-20 clang++-20 lld-20 libc++-20-dev libc++abi-20-dev libvulkan-dev libegl1-mesa-dev libgles2-mesa-dev libgl1-mesa-dri mesa-vulkan-drivers ninja-build

      - name: Show installed toolchain
        run: |
          ccache --version
          clang-20 --version
          clang++-20 --version
          ld.lld-20 --version || ld.lld --version || true
          dpkg -l 'libc++*' 'libegl*' 'libgles*' 'mesa*' 'vulkan*' || true

      - name: Download Linux runtime
        uses: actions/download-artifact@v8
        with:
          name: mobilegl-linux-runtime
          path: .

      - name: Unpack Linux runtime
        run: |
          tar -xzf mobilegl-linux-runtime.tgz
          test -f "${MOBILEGL_LIBRARY}"

      - name: Configure CMake
        run: |
          if [ "${{ secrets.ACTIONS_STEP_DEBUG }}" = "true" ]; then
            BUILD_TYPE=Debug
          else
            BUILD_TYPE=Release
          fi

          cmake -S . -B "${BUILD_DIR}" -G Ninja \
            -DCMAKE_C_COMPILER=clang-20 \
            -DCMAKE_CXX_COMPILER=clang++-20 \
            -DCMAKE_C_COMPILER_LAUNCHER=ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
            -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
            -DMOBILEGL_LOG_ACTIVE_LEVEL=MOBILEGL_LOG_LEVEL_INFO \
            -DMOBILEGL_BUILD_TEST=OFF \
            -DMOBILEGL_BUILD_BENCHMARK=OFF \
            -DMOBILEGL_BUILD_TRACE_REPLAY=ON \
            -DMOBILEGL_TRACE_REPLAY_MOBILEGL_LIBRARY="${MOBILEGL_LIBRARY}" \
            -DCMAKE_POLICY_VERSION_MINIMUM=3.5

      - name: Build trace replay
        run: cmake --build "${BUILD_DIR}" --target mobilegl_trace_replay --parallel "$(nproc)"

      - name: Show ccache stats
        if: always()
        run: ccache --show-stats

      - name: Normalize CTest command paths
        run: |
          python - <<'PY'
          from pathlib import Path
          import re

          for path in Path('build-retrace').rglob('CTestTestfile.cmake'):
              text = path.read_text()
              text = re.sub(r'"[^"]*/cmake-[^"]*/bin/cmake"', '"cmake"', text)
              path.write_text(text)
          PY

      - name: Package trace replay
        run: |
          mkdir -p ci-artifacts
          tar -czf ci-artifacts/mobilegl-trace-replay.tgz \
            build-retrace/tools/trace_replay/mobilegl_trace_replay \
            build-retrace/tools/trace_replay/CTestTestfile.cmake

      - name: Upload trace replay
        uses: actions/upload-artifact@v7
        with:
          name: mobilegl-trace-replay
          path: ci-artifacts/mobilegl-trace-replay.tgz
          if-no-files-found: error

  trace-cases:
    name: trace case matrix
    runs-on: ubuntu-latest
    needs:
      - test
      - benchmark
    outputs:
      names: ${{ steps.trace-cases.outputs.names }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v6

      - name: Load trace cases
        id: trace-cases
        run: echo "names=$(python3 tools/trace_replay/trace_cases.py --ci --format names)" >> "$GITHUB_OUTPUT"

  trace-fixtures:
    name: trace fixture (${{ matrix.case }})
    runs-on: ubuntu-latest
    needs: trace-cases
    strategy:
      fail-fast: false
      max-parallel: 4
      matrix:
        case: ${{ fromJSON(needs.trace-cases.outputs.names) }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v6

      - name: Fetch trace fixture
        run: bash .github/scripts/fetch-trace-fixture-lfs.sh '${{ matrix.case }}'

      - name: Stage trace fixture
        run: |
          safe_case="$(printf '%s' '${{ matrix.case }}' | sed 's/[^A-Za-z0-9._-]/_/g')"
          stage_dir="trace-fixtures/${safe_case}"
          mkdir -p "${stage_dir}"
          python3 tools/trace_replay/trace_cases.py --format fixture-files --case '${{ matrix.case }}' |
            while IFS= read -r file; do
              cp "${file}" "${stage_dir}/"
            done

      - name: Upload trace fixture
        uses: actions/upload-artifact@v7
        with:
          name: trace-fixture-${{ matrix.case }}
          path: trace-fixtures/**
          if-no-files-found: error

  retrace:
    name: retrace (${{ matrix.backend }}, ${{ matrix.case }})
    runs-on: ubuntu-latest
    needs:
      - build-linux
      - build-retrace
      - trace-cases
      - trace-fixtures
    if: ${{ always() && needs.build-linux.result == 'success' && needs.build-retrace.result == 'success' && needs.trace-cases.result == 'success' }}
    strategy:
      fail-fast: false
      max-parallel: 4
      matrix:
        backend:
          - DirectGLES
          - DirectVulkan
        case: ${{ fromJSON(needs.trace-cases.outputs.names) }}

    steps:
      - name: Set Swap Space
        uses: pierotofy/set-swap-space@v1.0
        with:
          swap-size-gb: 16

      - name: Checkout repo
        uses: actions/checkout@v6

      - name: Download trace fixture
        uses: actions/download-artifact@v8
        with:
          name: trace-fixture-${{ matrix.case }}
          path: trace-fixture-download

      - name: Install trace fixture
        run: |
          mkdir -p tools/trace_replay/fixtures
          find trace-fixture-download -type f -exec cp {} tools/trace_replay/fixtures/ \;

      - name: Get CMake
        uses: lukka/get-cmake@v4.3.3

      - name: Install runtime dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libvulkan1 libegl1-mesa-dev libgles2-mesa-dev libgl1-mesa-dri mesa-vulkan-drivers
          test -e /usr/lib/x86_64-linux-gnu/libEGL.so
          test -e /usr/lib/x86_64-linux-gnu/libGLESv2.so

      - name: Download Linux runtime
        uses: actions/download-artifact@v8
        with:
          name: mobilegl-linux-runtime
          path: .

      - name: Download trace replay
        uses: actions/download-artifact@v8
        with:
          name: mobilegl-trace-replay
          path: .

      - name: Unpack retrace runtime
        run: |
          tar -xzf mobilegl-linux-runtime.tgz
          tar -xzf mobilegl-trace-replay.tgz
          test -f build-linux/libMobileGL.so
          test -f build-retrace/tools/trace_replay/mobilegl_trace_replay

      - name: Retrace and validate
        working-directory: build-retrace/tools/trace_replay
        run: |
          if [ '${{ matrix.backend }}' = 'DirectVulkan' ]; then
            export MOBILEGL_MAGMA_R11G11B10F_FALLBACK=1
          fi
          # The blended depth-write quirk auto-enables only on Qualcomm, which no CI
          # runner has, so force it on for the OIT case it exists to fix. ForceOn
          # bypasses only the vendor gate, so this exercises the real strip on
          # lavapipe. The Android AVD lane deliberately leaves it off, keeping the
          # unstripped path covered for the same trace.
          if [ '${{ matrix.backend }}' = 'DirectVulkan' ] \
             && [ '${{ matrix.case }}' = 'improved-transparency-minecraft-26.3' ]; then
            export MOBILEGL_MAGMA_DISABLE_BLENDED_DEPTH_WRITE=1
          fi
          ctest -V --no-tests=error -R '^MobileGLTraceReplay\.${{ matrix.case }}\.${{ matrix.backend }}$'

      - name: Upload actual image
        if: always()
        uses: actions/upload-artifact@v7
        with:
          name: retrace-result-${{ matrix.backend }}-${{ matrix.case }}
          path: |
            build-retrace/tools/trace_replay/${{ matrix.case }}/actual-images/**
            build-retrace/tools/trace_replay/${{ matrix.case }}/${{ matrix.backend }}/output/**
          if-no-files-found: warn

  retrace-summary:
    name: retrace summary
    runs-on: ubuntu-latest
    needs: retrace
    if: ${{ always() && needs.retrace.result != 'skipped' }}

    steps:
      - name: Checkout repo
        uses: actions/checkout@v6

      - name: Set artifact metadata
        run: |
          echo "date_today=$(date +'%Y-%m-%d')" >> "$GITHUB_ENV"

      - name: Set up Node.js
        uses: actions/setup-node@v7
        with:
          node-version: '22'

      - name: Download retrace results
        uses: actions/download-artifact@v8
        with:
          pattern: retrace-result-*
          path: retrace-artifacts

      - name: Render retrace summary
        run: |
          node tools/trace_replay/render_retrace_summary.mjs \
            --input retrace-artifacts \
            --output-dir retrace-summary \
            --title "MobileGL Linux retrace overview" \
            --group-label "Linux" \
            --html mobilegl-linux-retrace-overview.html

      - name: Upload retrace summary
        uses: actions/upload-artifact@v7
        with:
          path: retrace-summary/mobilegl-linux-retrace-overview.html
          archive: false
          if-no-files-found: error

  remove-artifact-clutter:
    name: remove artifact clutter
    runs-on: ubuntu-latest
    needs: retrace-summary
    if: always()
    permissions:
      actions: write
    steps:
      - name: Delete intermediate Linux retrace artifacts
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          declare -A failed_cases=()
          while IFS= read -r job_name; do
            case_name="${job_name#retrace (*, }"
            case_name="${case_name%)}"
            failed_cases["${case_name}"]=1
          done < <(
            gh api --paginate "repos/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}/jobs?per_page=100" \
              --jq '.jobs[] | select(.name | startswith("retrace (")) | select(.conclusion == "failure" or .conclusion == "cancelled" or .conclusion == "timed_out" or .conclusion == "action_required") | .name'
          )

          if ((${#failed_cases[@]})); then
            echo "Retaining fixtures for failed retrace case(s):"
            printf '  %s\n' "${!failed_cases[@]}"
          else
            echo "All retrace jobs succeeded; no fixtures need to be retained."
          fi

          deleted=0
          retained=0
          while IFS=$'\t' read -r artifact_id artifact_name; do
            if [[ "${artifact_name}" == trace-fixture-* ]]; then
              case_name="${artifact_name#trace-fixture-}"
              if [[ -v "failed_cases[${case_name}]" ]]; then
                echo "Retaining ${artifact_name} (${artifact_id}) for failed retrace."
                ((retained += 1))
                continue
              fi
            fi

            echo "Deleting ${artifact_name} (${artifact_id})"
            gh api --method DELETE "repos/${GITHUB_REPOSITORY}/actions/artifacts/${artifact_id}"
            ((deleted += 1))
          done < <(
            gh api --paginate "repos/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}/artifacts?per_page=100" \
              --jq '.artifacts[] | select(.name | startswith("trace-fixture-") or startswith("retrace-result-")) | [.id, .name] | @tsv'
          )

          echo "Deleted ${deleted} intermediate Linux artifact(s); retained ${retained} failed-retrace fixture(s)."