name: Clang-Tidy action

on:
  push:
  pull_request:
  workflow_dispatch:
    inputs:
      scan_regex:
        description: "Regex used to select files from compile_commands.json"
        required: false
        default: "/(core|class|common|osal|port|platform)/.*[.]c$"

jobs:
  clang-tidy:
    name: clang-tidy
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y clang-tidy cmake ninja-build jq ripgrep wget

      - name: Download hpm_sdk
        run: |
          cd ~
          git clone --depth 1 https://github.com/hpmicro/hpm_sdk.git

      - name: Download RISC-V toolchain
        run: |
          cd ~
          wget -q https://github.com/hpmicro/riscv-gnu-toolchain/releases/download/2023.10.18/rv32imac_zicsr_zifencei_multilib_b_ext-linux.tar.gz
          tar -xzf rv32imac_zicsr_zifencei_multilib_b_ext-linux.tar.gz

      - name: Generate HPM compile database
        run: |
          cd tests/hpmicro
          export HPM_SDK_BASE=~/hpm_sdk
          export GNURISCV_TOOLCHAIN_PATH=~/rv32imac_zicsr_zifencei_multilib_b_ext-linux
          export HPM_SDK_TOOLCHAIN_VARIANT=
          cmake -S . -B build -GNinja \
            -DBOARD=hpm6800evk \
            -DHPM_BUILD_TYPE=flash_sdram_xip \
            -DCMAKE_BUILD_TYPE=debug \
            -DCMAKE_EXPORT_COMPILE_COMMANDS=ON

      - name: Run clang-tidy
        shell: bash
        env:
          SCAN_REGEX: ${{ github.event.inputs.scan_regex || '/(core|class|common|osal|port|platform)/.*[.]c$' }}
        run: |
          TOOLCHAIN="$HOME/rv32imac_zicsr_zifencei_multilib_b_ext-linux"
          GCC="$TOOLCHAIN/bin/riscv32-unknown-elf-gcc"
          GCC_INCLUDE="$("$GCC" -print-file-name=include)"
          GCC_INCLUDE_FIXED="$("$GCC" -print-file-name=include-fixed)"

          set +e
          jq -r '.[].file' tests/hpmicro/build/compile_commands.json \
            | rg "^${GITHUB_WORKSPACE}${SCAN_REGEX}" \
            | xargs -r -n1 clang-tidy \
                -p tests/hpmicro/build \
                --quiet \
                --extra-arg-before=--target=riscv32-unknown-elf \
                --extra-arg=-isystem"$GCC_INCLUDE" \
                --extra-arg=-isystem"$GCC_INCLUDE_FIXED" \
            > clang-tidy.log 2>&1
          tidy_status=$?
          set -e

          grep -E "warning:|error:" clang-tidy.log | tee clang-tidy-summary.log || true

          while IFS= read -r line; do
            if [[ "$line" =~ ^([^:]+):([0-9]+):([0-9]+):[[:space:]]warning:[[:space:]](.*)$ ]]; then
              echo "::warning file=${BASH_REMATCH[1]},line=${BASH_REMATCH[2]},col=${BASH_REMATCH[3]}::${BASH_REMATCH[4]}"
            elif [[ "$line" =~ ^([^:]+):([0-9]+):([0-9]+):[[:space:]]error:[[:space:]](.*)$ ]]; then
              echo "::error file=${BASH_REMATCH[1]},line=${BASH_REMATCH[2]},col=${BASH_REMATCH[3]}::${BASH_REMATCH[4]}"
            fi
          done < clang-tidy-summary.log

          if [ "$tidy_status" -ne 0 ]; then
            exit "$tidy_status"
          fi

      - name: Upload clang-tidy logs
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: clang-tidy-logs
          path: |
            clang-tidy.log
            clang-tidy-summary.log