SwiftLint.yml

name: SwiftLint on Changed Files

on: [pull_request]

jobs:
  swiftlint:
    name: Run SwiftLint
    runs-on: macos-latest

    steps:
    - name: Checkout Repository
      uses: actions/checkout@v3
      with:
        fetch-depth: 0  # fetch all history so that we can get the proper list of changed files

    - name: Get changed files
      run: |
        echo "CHANGED_FILES=$(git diff --name-only --diff-filter=ACMRT ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | xargs)" >> $GITHUB_ENV

    - name: Install SwiftLint
      run: brew install swiftlint

    - name: Run SwiftLint on changed files
      run: |
        # Extract changed files and filter for Swift files
        SWIFT_FILES=$(echo "$CHANGED_FILES" | grep -E '\.(swift)$' | xargs)
        
        # Display the list of Swift files to be linted
        echo "Swift files to be linted:"
        echo "$SWIFT_FILES"
        
        # Run SwiftLint on each changed Swift file
        # If no Swift files changed, skip the step
        if [ -z "$SWIFT_FILES" ]; then
          echo "No Swift files to lint."
        else
          echo "Linting changed Swift files..."
          swiftlint --config dydx/.swiftlint.yml --fix lint -- $SWIFT_FILES
        fi