name: clang-tidy

on:
  # Paths filtering is intentionally not used at the trigger level.
  # - For pushes, dorny/paths-filter in the setup job determines which opted-in
  #   libraries changed (via each library's path_filters) and builds the matrix.
  # - For PRs, the workflow must always run so the required check is registered
  #   for every PR; the clang-tidy job is skipped when no opted-in component is affected.
  push:
    branches:
      - develop
      - release/therock-*
  pull_request:
  workflow_dispatch:

concurrency:
  # For PRs, group by PR number so a new commit cancels any in-progress run
  # for the same PR. For postsubmits, group by commit SHA (unique per commit)
  # so runs never cancel each other. The workflow name is prepended to avoid
  # conflicts between different workflows.
  group: ${{ github.workflow }}-${{ github.event.number || github.sha }}
  cancel-in-progress: true

jobs:
  setup:
    name: "Setup"
    runs-on: ubuntu-24.04
    outputs:
      matrix: ${{ steps.build-matrix.outputs.matrix }}
    steps:
      - name: Checkout rocm-libraries
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          sparse-checkout: .github
          sparse-checkout-cone-mode: true
          fetch-depth: 2

      - name: Define opted-in libraries
        id: lib-config
        run: |
          # To opt in a new library: add one jq -cn block to LIBS below, then:
          #   - Add an "Install deps (<name>)" step in the clang-tidy job if needed.
          #   - Add a "Run clang-tidy (<name>)" step in the clang-tidy job.
          # Required fields: name, path_filters (array), checkout_paths (array)
          # Optional fields: (all build config is handled in the per-library run step)
          # path_filters controls which file changes trigger clang-tidy for this library;
          # use specific globs rather than /** to avoid false triggers.
          # NOTE: dorny/paths-filter uses picomatch where '?' means "any single char",
          # NOT GitHub Actions' "zero or one of preceding char". Use explicit extensions.
          # checkout_paths lists all repo paths needed for sparse checkout.
          LIBS=()

          # stinkytofu
          LIBS+=($(jq -cn '{
            name:           "stinkytofu",
            path_filters:   [
              "shared/stinkytofu/**/*.{c,h,cpp,hpp,cxx,hxx,def}",
              "shared/stinkytofu/.clang-tidy",
              "cmake/modules/ClangTidy.cmake",
              "cmake/modules/CheckToolVersion.cmake"
            ],
            checkout_paths: ["shared/stinkytofu", "cmake/modules"]
          }'))

          # MIOpen
          LIBS+=($(jq -cn '{
            name:           "miopen",
            path_filters:   [
              "projects/miopen/**/*.{c,h,cpp,hpp,cxx,hxx}",
              "projects/miopen/cmake/ClangTidy.cmake",
              "projects/miopen/.clang-tidy"
            ],
            checkout_paths: ["projects/miopen", "shared/ctest"]
          }'))

          # Common filters applied to every library — changes here re-run all opted-in libraries.
          COMMON_FILTERS='[".github/workflows/clang-tidy.yml"]'

          printf '%s\n' "${LIBS[@]}" \
            | jq -rs --argjson common "$COMMON_FILTERS" \
              '.[] | "\(.name):\n" + ((.path_filters + $common) | map("  - \"\(.)\"") | join("\n")) + "\n"' \
            > path-filters.yml

          LIBS_JSON=$(printf '%s\n' "${LIBS[@]}" \
            | jq -sc '[.[] | . + {checkout_paths_str: (.checkout_paths | join("\n"))}]')
          echo "libs=${LIBS_JSON}" >> "$GITHUB_OUTPUT"

      - name: Detect changed opted-in projects
        uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
        id: changes
        with:
          filters: path-filters.yml

      - name: Build job matrix
        id: build-matrix
        run: |
          CHANGED='${{ steps.changes.outputs.changes }}'
          LIBS='${{ steps.lib-config.outputs.libs }}'
          IS_DISPATCH=${{ github.event_name == 'workflow_dispatch' }}

          MATRIX=$(
            echo "$LIBS" | jq -c \
              --argjson changed "$CHANGED" \
              --argjson dispatch "$IS_DISPATCH" \
              '[.[] | select($dispatch or (.name as $n | $changed | index($n) != null))]
               | {"include": .}'
          )
          echo "matrix=${MATRIX}" >> "$GITHUB_OUTPUT"

  clang-tidy:
    name: "clang-tidy (${{ matrix.name }})"
    needs: setup
    if: needs.setup.outputs.matrix != '{"include":[]}'
    strategy:
      matrix: ${{ fromJSON(needs.setup.outputs.matrix) }}
      fail-fast: false
    runs-on: azure-linux-scale-rocm
    steps:
      - name: Checkout rocm-libraries
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          sparse-checkout: ${{ matrix.checkout_paths_str }}
          sparse-checkout-cone-mode: true

      - name: Checkout TheRock
        uses: actions/checkout@v6.0.2
        with:
          repository: ROCm/TheRock
          path: TheRock

      - name: Install base dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            ninja-build \
            python3-venv \
            python3-dev \
            lsb-release wget \
            software-properties-common \
            gnupg
          python3 -m venv .venv
          . .venv/bin/activate
          pip install boto3 cmake
          pip install -r TheRock/requirements.txt

      - name: Install ROCm
        run: |
          sudo .venv/bin/python3 TheRock/build_tools/install_rocm_from_artifacts.py \
            --latest-release \
            --amdgpu-family gfx94X-dcgpu \
            --output-dir /opt/rocm \
            --base-only

      # Per-library optional dependency steps — only the matching step runs.
      # Add a new step here when opting in a library that has custom deps.
      - name: Install deps (stinkytofu)
        if: matrix.name == 'stinkytofu'
        run: |
          wget https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh 20
          sudo apt-get update
          sudo apt-get install -y \
            clang-tidy-20 \
            clang-tools-20 \
            libgtest-dev \
            python3-dev
          . .venv/bin/activate
          pip install -r shared/stinkytofu/requirements.txt

      - name: Install deps (miopen)
        if: matrix.name == 'miopen'
        run: |
          . .venv/bin/activate
          # cmake 4.x removed compat with cmake_minimum_required(VERSION <3.5);
          # several MIOpen deps (e.g. bzip2@1.0.8) still declare old minimums.
          pip install 'cmake<4' \
            https://github.com/pfultz2/cget/archive/b5dd36cafa2804e6146c5021eb2469c4b2d3ad42.tar.gz \
            https://github.com/RadeonOpenCompute/rbuild/archive/c33b1a7e74ae7f72379364b523f73d30fd4d765c.tar.gz
          wget https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh 21
          sudo apt-get install -y clang-tidy-21
          cp projects/miopen/requirements.txt     /tmp/requirements.txt
          cp projects/miopen/rbuild.ini           /tmp/rbuild.ini
          cp projects/miopen/dev-requirements.txt /tmp/dev-requirements.txt
          # Strip deps not available/needed on CI runner
          sed -i '/composablekernel/d; /half/d; /rocMLIR/d' /tmp/requirements.txt
          cd /tmp && CMAKE_GENERATOR=Ninja rbuild prepare -s develop -d /tmp/miopen-deps

      - name: Run clang-tidy (stinkytofu)
        if: matrix.name == 'stinkytofu'
        run: |
          . .venv/bin/activate
          export ROCM_PATH=/opt/rocm
          cd shared/stinkytofu
          invoke build
          invoke tidy

      - name: Run clang-tidy (miopen)
        if: matrix.name == 'miopen'
        run: |
          . .venv/bin/activate
          export PATH=/opt/rocm/bin:/opt/rocm/llvm/bin:$PATH
          export CXX=/opt/rocm/llvm/bin/clang++
          # TODO: remove -DMIOPEN_USE_MLIR=OFF once rocMLIR is removed from MIOpen
          cmake -S projects/miopen -B build-miopen -G Ninja \
            -DMIOPEN_BACKEND=HIP \
            -DBUILD_DEV=ON \
            -DMIOPEN_USE_MLIR=OFF \
            -DCLANG_TIDY_EXE=/usr/bin/clang-tidy-21 \
            -DCMAKE_PREFIX_PATH="/opt/rocm;/tmp/miopen-deps" \
            -DROCM_PATH=/opt/rocm
          ninja -C build-miopen analyze

  clang_tidy_summary:
    name: "clang-tidy summary"
    if: always()
    needs:
      - setup
      - clang-tidy
    runs-on: ubuntu-24.04
    steps:
      - name: Output failed jobs
        run: |
          echo '${{ toJson(needs) }}'
          FAILED_JOBS="$(echo '${{ toJson(needs) }}' \
            | jq --raw-output \
            'map_values(select(.result!="success" and .result!="skipped")) | keys | join(",")' \
          )"
          if [[ "${FAILED_JOBS}" != "" ]]; then
            echo "The following jobs failed: ${FAILED_JOBS}"
            exit 1
          fi