name: Auto Versioning and Release

on:
  push:
    branches: [ main ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: false

permissions:
  contents: write  # Required for creating releases via API

jobs:
  version:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
        with:
          fetch-depth: 0

      - name: Calculate Semantic Version
        id: semver
        uses: paulhatch/semantic-version@a8f8f59fd7f0625188492e945240f12d7ad2dca3 # v5.4.0
        with:
          # The prefix to use to create tags
          tag_prefix: "v"
          # Regex pattern for major version bump (breaking changes)
          # Matches: "feat!:", "fix!:", "BREAKING CHANGE:" in commit messages
          major_pattern: "/!:|BREAKING CHANGE:/"
          # Regex pattern for minor version bump (new features)
          # Matches: "feat:" prefix in commit messages (Conventional Commits)
          minor_pattern: "/feat:/"
          # Pattern to determine formatting
          version_format: "${major}.${minor}.${patch}"
          # If no tags are found, this version is used
          version_from_branch: "0.0.0"
          # This helps it search through history to find the last tag
          search_commit_body: true
          # Important: This enables the output 'changed' which your other steps rely on
          enable_prerelease_mode: false

      - name: Show version
        run: |
          echo "Next version: ${{ steps.semver.outputs.version }}"
          echo "Version changed: ${{ steps.semver.outputs.changed }}"

      - name: Determine tag name
        id: determine_tag
        run: |
          # Normalize the version: remove any leading 'v' so we don't end up with 'vvX.Y.Z'
          RAW="${{ steps.semver.outputs.version }}"
          VERSION_NO_V="${RAW#v}"
          TAG="v${VERSION_NO_V}"
          echo "Determined tag: $TAG"
          echo "tag=$TAG" >> $GITHUB_OUTPUT

      - name: Check for existing GitHub Release
        id: check_release
        run: |
          TAG=${{ steps.determine_tag.outputs.tag }}
          echo "Checking for release for tag: ${TAG}"
          STATUS=$(curl -s -o /dev/null -w "%{http_code}" \
            -H "Authorization: token ${GITHUB_TOKEN}" \
            -H "Accept: application/vnd.github+json" \
            "https://api.github.com/repos/${GITHUB_REPOSITORY}/releases/tags/${TAG}") || true
          if [ "${STATUS}" = "200" ]; then
            echo "exists=true" >> $GITHUB_OUTPUT
            echo "ℹ️  Release already exists for tag: ${TAG}"
          else
            echo "exists=false" >> $GITHUB_OUTPUT
            echo "✅ No existing release found for tag: ${TAG}"
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create GitHub Release (creates tag via API)
        if: ${{ steps.semver.outputs.changed == 'true' && steps.check_release.outputs.exists == 'false' }}
        uses: softprops/action-gh-release@a06a81a03ee405af7f2048a818ed3f03bbf83c7b # v2
        with:
          tag_name: ${{ steps.determine_tag.outputs.tag }}
          name: Release ${{ steps.determine_tag.outputs.tag }}
          generate_release_notes: true
          make_latest: true
          draft: false
          prerelease: false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Output release information
        if: ${{ steps.semver.outputs.changed == 'true' && steps.check_release.outputs.exists == 'false' }}
        run: |
          echo "✅ Successfully created release: ${{ steps.determine_tag.outputs.tag }}"
          echo "📦 Release URL: https://github.com/${{ github.repository }}/releases/tag/${{ steps.determine_tag.outputs.tag }}"