actions/biome-fix/action.yml

# yaml-language-server: $schema=https://json.schemastore.org/github-action.json
# permissions:
#   - contents: write  # Required for pushing fixes back to repository
---
name: Biome Fix
description: Run Biome fix on the repository
author: Ismo Vuorinen

branding:
  icon: check-circle
  color: green

inputs:
  token:
    description: 'GitHub token for authentication'
    required: false
    default: ${{ github.token }}
  username:
    description: 'GitHub username for commits'
    required: false
    default: 'github-actions'
  email:
    description: 'GitHub email for commits'
    required: false
    default: 'github-actions@github.com'
  max-retries:
    description: 'Maximum number of retry attempts for npm install operations'
    required: false
    default: '3'

outputs:
  files_changed:
    description: 'Number of files changed by formatting'
    value: ${{ steps.fix.outputs.files_changed }}
  fix_status:
    description: 'Fix status (success/failure)'
    value: ${{ steps.fix.outputs.status }}

runs:
  using: composite
  steps:
    - name: Validate Inputs
      id: validate
      shell: bash
      env:
        GITHUB_TOKEN: ${{ inputs.token }}
        EMAIL: ${{ inputs.email }}
        USERNAME: ${{ inputs.username }}
        MAX_RETRIES: ${{ inputs.max-retries }}
      run: |
        set -euo pipefail

        # Validate GitHub token format (basic validation)
        if [[ -n "$GITHUB_TOKEN" ]]; then
          # Skip validation for GitHub expressions (they'll be resolved at runtime)
          if ! [[ "$GITHUB_TOKEN" =~ ^gh[efpousr]_[a-zA-Z0-9]{36}$ ]] && ! [[ "$GITHUB_TOKEN" =~ ^\$\{\{ ]]; then
            echo "::warning::GitHub token format may be invalid. Expected format: gh*_36characters"
          fi
        fi

        # Validate email format (basic check)
        if [[ "$EMAIL" != *"@"* ]] || [[ "$EMAIL" != *"."* ]]; then
          echo "::error::Invalid email format: '$EMAIL'. Expected valid email address"
          exit 1
        fi

        # Validate username format (prevent command injection)
        if [[ "$USERNAME" =~ [;&|] ]]; then
          echo "::error::Invalid username: '$USERNAME'. Command injection patterns not allowed"
          exit 1
        fi

        # Validate username length
        username="$USERNAME"
        if [ ${#username} -gt 39 ]; then
          echo "::error::Username too long: ${#username} characters. GitHub usernames are max 39 characters"
          exit 1
        fi

        # Validate max retries (positive integer with reasonable upper limit)
        if ! [[ "$MAX_RETRIES" =~ ^[0-9]+$ ]] || [ "$MAX_RETRIES" -le 0 ] || [ "$MAX_RETRIES" -gt 10 ]; then
          echo "::error::Invalid max-retries: '$MAX_RETRIES'. Must be a positive integer between 1 and 10"
          exit 1
        fi

        echo "Input validation completed successfully"

    - name: Checkout Repository
      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
      with:
        token: ${{ inputs.token }}

    - name: Set Git Config
      uses: ./set-git-config
      with:
        token: ${{ inputs.token }}
        username: ${{ inputs.username }}
        email: ${{ inputs.email }}

    - name: Node Setup
      id: node-setup
      uses: ./node-setup

    - name: Cache Node Dependencies
      id: cache
      uses: ./common-cache
      with:
        type: 'npm'
        paths: 'node_modules'
        key-files: 'package-lock.json,yarn.lock,pnpm-lock.yaml,bun.lockb'
        key-prefix: 'biome-fix-${{ steps.node-setup.outputs.package-manager }}'

    - name: Install Biome
      shell: bash
      env:
        PACKAGE_MANAGER: ${{ steps.node-setup.outputs.package-manager }}
        MAX_RETRIES: ${{ inputs.max-retries }}
      run: |
        set -euo pipefail

        # Check if biome is already installed
        if command -v biome >/dev/null 2>&1; then
          echo "✅ Biome already installed: $(biome --version)"
          exit 0
        fi

        echo "Installing Biome using $PACKAGE_MANAGER..."

        for attempt in $(seq 1 "$MAX_RETRIES"); do
          echo "Attempt $attempt of $MAX_RETRIES"

          case "$PACKAGE_MANAGER" in
            "pnpm")
              if pnpm add -g @biomejs/biome; then
                echo "✅ Biome installed successfully with pnpm"
                exit 0
              fi
              ;;
            "yarn")
              if yarn global add @biomejs/biome; then
                echo "✅ Biome installed successfully with yarn"
                exit 0
              fi
              ;;
            "bun")
              if bun add -g @biomejs/biome; then
                echo "✅ Biome installed successfully with bun"
                exit 0
              fi
              ;;
            "npm"|*)
              if npm install -g @biomejs/biome; then
                echo "✅ Biome installed successfully with npm"
                exit 0
              fi
              ;;
          esac

          if [ $attempt -lt "$MAX_RETRIES" ]; then
            echo "❌ Installation failed, retrying in 5 seconds..."
            sleep 5
          fi
        done

        echo "::error::Failed to install Biome after $MAX_RETRIES attempts"
        exit 1

    - name: Run Biome Fix
      id: fix
      shell: bash
      run: |
        set -euo pipefail

        echo "Running Biome fix..."

        # Run Biome fix and capture exit code
        biome_exit_code=0
        biome check --write . || biome_exit_code=$?

        # Count changed files using git diff (strip whitespace from wc output)
        files_changed=$(git diff --name-only | wc -l | tr -d ' ')

        # Set status based on biome check result and changes
        if [ $biome_exit_code -eq 0 ] && [ "$files_changed" -eq 0 ]; then
          status="success"
        else
          status="failure"
        fi

        echo "files_changed=$files_changed" >> "$GITHUB_OUTPUT"
        echo "status=$status" >> "$GITHUB_OUTPUT"

        echo "✅ Biome fix completed. Files changed: $files_changed, Status: $status"

    - name: Push Fixes
      if: success()
      uses: stefanzweifel/git-auto-commit-action@28e16e81777b558cc906c8750092100bbb34c5e3 # v7.0.0
      with:
        commit_message: 'style: autofix Biome violations'
        add_options: '-u'