name: format

on:
  workflow_call:
    inputs:
      language:
        description: the language to target for code formatting
        required: true
        type: string
      directory:
        description: "the directory to format (default: .)"
        required: false
        type: string
      command:
        description: custom command to run for formatting
        required: false
        type: string

jobs:
  format:
    timeout-minutes: 15
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: fetch latest commit
        run:  git pull origin "$(git rev-parse --abbrev-ref HEAD)"
      - name: set up csharp
        if: inputs.language == 'csharp'
        uses: c4patino/actions/.github/actions/setup-csharp@main
      - name: set up c
        if: inputs.language == 'c'
        uses: c4patino/actions/.github/actions/setup-c@main
      - name: set up cpp
        if: inputs.language == 'cpp'
        uses: c4patino/actions/.github/actions/setup-cpp@main
      - name: set up go
        if: inputs.language == 'go'
        uses: c4patino/actions/.github/actions/setup-go@main
      - name: set up javascript
        if: inputs.language == 'js'
        uses: c4patino/actions/.github/actions/setup-js@main
      - name: set up lua
        if: inputs.language == 'lua'
        uses: c4patino/actions/.github/actions/setup-lua@main
      - name: set up nix
        if: inputs.language == 'nix'
        uses: c4patino/actions/.github/actions/setup-nix@main
      - name: set up racket
        if: inputs.language == 'racket'
        uses: c4patino/actions/.github/actions/setup-racket@main
      - name: set up python
        if: inputs.language == 'python'
        uses: c4patino/actions/.github/actions/setup-python@main
      - name: set up rust
        if: inputs.language == 'rust'
        uses: c4patino/actions/.github/actions/setup-rust@main
      - name: run formatting command
        if: inputs.command != ''
        run: ${{ inputs.command }}
      - name: format all files
        if: inputs.command == ''
        run: |
          TARGET_DIR="${{ inputs.directory || '.' }}"

          case "${{ inputs.language }}" in
            "csharp")
              (cd "$TARGET_DIR" && dotnet format)
              ;;
            "go")
              (cd "$TARGET_DIR" && go fmt ./...)
              ;;
            "js")
              prettier --write "$TARGET_DIR" --cache
              ;;
            "lua")
              stylua "$TARGET_DIR"
              ;;
            "nix")
              alejandra "$TARGET_DIR"
              ;;
            "python")
              if find "$TARGET_DIR" -type f \( -name "*.py" \) | grep -q .; then
                yapf --in-place --parallel --recursive --exclude ".venv" "$TARGET_DIR"
              else
                echo "No Python files found in $TARGET_DIR. Skipping yapf."
              fi
              ;;
            "racket")
              if find "$TARGET_DIR" -type f -name "*.rkt" | grep -q .; then
                find "$TARGET_DIR" -type f -name "*.rkt" -exec raco fmt -i {} \;
              else
                echo "No Racket files found in $TARGET_DIR. Skipping raco fmt."
              fi
              ;;
            "rust")
              (cd "$TARGET_DIR" && cargo fmt --all)
              ;;
            "cpp")
              if find "$TARGET_DIR" -type f \( -name "*.cpp" -o -name "*.hpp" \) -not -path "*/extern/*" | grep -q .; then
                find "$TARGET_DIR" -type f \( -name "*.cpp" -o -name "*.hpp" \) -not -path "*/extern/*" -exec clang-format -i --style=file {} \;
              else
                echo "No C++ files found in $TARGET_DIR. Skipping clang-format."
              fi
              ;;
            "c")
              if find "$TARGET_DIR" -type f \( -name "*.c" -o -name "*.h" \) -not -path "*/extern/*" | grep -q .; then
                find "$TARGET_DIR" -type f \( -name "*.c" -o -name "*.h" \) -not -path "*/extern/*" -exec clang-format -i --style=file {} \;
              else
                echo "No C files found in $TARGET_DIR. Skipping clang-format."
              fi
              ;;
            *)
              echo "unsupported language: ${{ inputs.language }}"
              exit 1
              ;;
          esac
      - name: commit changes
        uses: stefanzweifel/git-auto-commit-action@v6.0.1
        with:
          commit_message: |
            style: autoformatting all ${{ inputs.language }} files

            [skip ci]