actions/php-version-detect/action.yml

# yaml-language-server: $schema=https://json.schemastore.org/github-action.json
# permissions:
#   - contents: read  # Required for reading version files
---
name: PHP Version Detect
description: "Detects the PHP version from the project's composer.json, phpunit.xml, or other configuration files."
author: 'Ismo Vuorinen'

branding:
  icon: code
  color: purple

inputs:
  default-version:
    description: 'Default PHP version to use if no version is detected.'
    required: false
    default: '8.2'
  token:
    description: 'GitHub token for authentication'
    required: false
    default: ''

outputs:
  php-version:
    description: 'Detected or default PHP version.'
    value: ${{ steps.parse-version.outputs.detected-version }}

runs:
  using: composite
  steps:
    - name: Validate Inputs
      id: validate
      shell: bash
      env:
        DEFAULT_VERSION: ${{ inputs.default-version }}
      run: |
        set -euo pipefail

        # Validate default-version format
        if ! [[ "$DEFAULT_VERSION" =~ ^[0-9]+\.[0-9]+(\.[0-9]+)?$ ]]; then
          echo "::error::Invalid default-version format: '$DEFAULT_VERSION'. Expected format: X.Y or X.Y.Z (e.g., 8.2, 8.3.1)"
          exit 1
        fi

        # Check for reasonable version range (prevent malicious inputs)
        major_version=$(echo "$DEFAULT_VERSION" | cut -d'.' -f1)
        if [ "$major_version" -lt 7 ] || [ "$major_version" -gt 9 ]; then
          echo "::error::Invalid default-version: '$DEFAULT_VERSION'. PHP major version should be between 7 and 9"
          exit 1
        fi

        # Check minor version range for PHP 8
        if [ "$major_version" -eq 8 ]; then
          minor_version=$(echo "$DEFAULT_VERSION" | cut -d'.' -f2)
          if [ "$minor_version" -lt 0 ] || [ "$minor_version" -gt 4 ]; then
            echo "::error::Invalid default-version: '$DEFAULT_VERSION'. PHP 8 minor version should be between 0 and 4"
            exit 1
          fi
        fi

        echo "Input validation completed successfully"

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

    - name: Parse PHP Version
      id: parse-version
      uses: ivuorinen/actions/version-file-parser@2f1c73dd8b23ffec17bb93ebd0f32e7a7c7546fc
      with:
        language: 'php'
        tool-versions-key: 'php'
        dockerfile-image: 'php'
        version-file: '.php-version'
        validation-regex: '^[0-9]+\.[0-9]+(\.[0-9]+)?$'
        default-version: ${{ inputs.default-version }}