action.yml

name: 'Align codebase'
description: 'Check monorepo structural alignment against rules defined in align.toml'
branding:
  color: orange
  icon: chevron-up

inputs:
  config:
    description: 'Path to align.toml config file'
    required: false
    default: 'align.toml'
  version:
    description: 'Release version to use (e.g. v0.1.0). Default: latest'
    required: false
    default: 'latest'

outputs:
  passed:
    description: 'Number of checks that passed'
    value: ${{ steps.run.outputs.passed }}
  failed:
    description: 'Number of checks that failed'
    value: ${{ steps.run.outputs.failed }}
  total:
    description: 'Total number of checks'
    value: ${{ steps.run.outputs.total }}

runs:
  using: 'composite'
  steps:
    - name: Detect platform
      id: platform
      shell: bash
      run: |
        ARCH=$(uname -m)
        case "$ARCH" in
          x86_64)        ARCH="x86_64" ;;
          aarch64|arm64) ARCH="aarch64" ;;
          *) echo "::error::Unsupported architecture: $ARCH"; exit 1 ;;
        esac
        OS=$(uname -s | tr '[:upper:]' '[:lower:]')
        case "$OS" in
          linux)  PLATFORM="${ARCH}-linux" ;;
          darwin) PLATFORM="${ARCH}-macos" ;;
          *) echo "::error::Unsupported OS: $OS"; exit 1 ;;
        esac
        echo "archive=align-${PLATFORM}.tar.gz" >> "$GITHUB_OUTPUT"

    - name: Download binary
      shell: bash
      run: |
        VERSION="${{ inputs.version }}"
        ARCHIVE="${{ steps.platform.outputs.archive }}"
        REPO="${{ github.action_repository }}"
        if [ "$VERSION" = "latest" ]; then
          URL="https://github.com/${REPO}/releases/latest/download/${ARCHIVE}"
        else
          URL="https://github.com/${REPO}/releases/download/${VERSION}/${ARCHIVE}"
        fi
        curl -fsSL "$URL" | tar xz -C /tmp
        chmod +x /tmp/align

    - name: Register problem matcher
      shell: bash
      run: echo "::add-matcher::${{ github.action_path }}/problem-matcher.json"

    - name: Run align
      id: run
      shell: bash
      run: |
        set +e
        OUTPUT=$(/tmp/align --config "${{ inputs.config }}" --format json)
        EXIT_CODE=$?
        set -e

        PASSED=$(echo "$OUTPUT" | jq -r '.passed')
        FAILED=$(echo "$OUTPUT" | jq -r '.failed')
        TOTAL=$(echo "$OUTPUT" | jq -r '.total')

        echo "passed=$PASSED" >> "$GITHUB_OUTPUT"
        echo "failed=$FAILED" >> "$GITHUB_OUTPUT"
        echo "total=$TOTAL" >> "$GITHUB_OUTPUT"

        # Emit FAIL lines for problem matcher
        echo "$OUTPUT" | jq -r '.results[] | select(.status == "FAIL") | "FAIL  \(.rule)  \(.path)  \(.message)"'

        # Job summary
        {
          echo "## Align Results"
          echo ""
          if [ "$FAILED" -eq 0 ]; then
            echo "All **${TOTAL}** checks passed."
          else
            echo "**${FAILED}** of **${TOTAL}** checks failed."
          fi
          echo ""
          echo "<details><summary>Details (${PASSED} passed, ${FAILED} failed)</summary>"
          echo ""
          echo "| Status | Rule | Path | Message |"
          echo "|--------|------|------|---------|"
          echo "$OUTPUT" | jq -r '.results[] | "| \(.status) | \(.rule) | \(.path) | \(.message) |"'
          echo ""
          echo "</details>"
        } >> "$GITHUB_STEP_SUMMARY"

        exit $EXIT_CODE

    - name: Deregister problem matcher
      if: always()
      shell: bash
      run: echo "::remove-matcher owner=align::"