name: Code Format

on:
  pull_request:
    branches: [master]

permissions:
  contents: read

jobs:
  check-commit-msg:
    name: Check Commit Message Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Validate commit messages
        run: |
          errors=0
          for sha in $(git log --format=%H origin/master..HEAD); do
            msg=$(git log -1 --format=%s "$sha")
            # Allow merge commits
            if echo "$msg" | grep -qE "^Merge "; then
              continue
            fi
            if ! echo "$msg" | grep -qE '^\[[A-Za-z0-9]+:(Feature|Bugfix|Perf|Refact|Style|Doc|Test|Chore)\] .+'; then
              echo "BAD: $sha $msg"
              errors=1
            fi
          done
          if [ "$errors" -eq 1 ]; then
            echo ""
            echo "Commit message must match: [Module:Type] Description"
            echo "  Module: LLM, CPU, Metal, CUDA, OpenCL, Vulkan, Core, Infra, Doc, etc."
            echo "  Type:   Feature, Bugfix, Perf, Refact, Style, Doc, Test, Chore"
            exit 1
          fi

  check-format:
    name: Check Changed Lines Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Install clang-format-17
        run: |
          wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
          echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main" | sudo tee /etc/apt/sources.list.d/llvm.list
          sudo apt-get update
          sudo apt-get install -y clang-format-17
          sudo ln -sf /usr/bin/clang-format-17 /usr/bin/clang-format
          sudo ln -sf /usr/bin/git-clang-format-17 /usr/bin/git-clang-format
      - name: Check format of changed lines
        run: |
          git clang-format --diff origin/master --extensions cpp,c,h,hpp,cc,m,mm > /tmp/format.diff 2>&1 || true
          if grep -q "^diff" /tmp/format.diff; then
            echo "Format issues in changed lines:"
            cat /tmp/format.diff
            exit 1
          fi
          echo "All changed lines are properly formatted."