name: Auto Versioning and Release

on:
  push:
    branches: [ main ]

permissions:
  contents: write
  pull-requests: write

jobs:
  version:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Generate semantic version (fallback script)
        id: semver
        run: |
          # Ensure git tags are fetched
          git fetch --tags --quiet || true
          # Get latest tag or default to v0.0.0
          TAG=$(git describe --abbrev=0 --tags 2>/dev/null || echo "v0.0.0")
          echo "Detected latest tag: $TAG"
          # Set outputs for downstream steps
          echo "version=$TAG" >> $GITHUB_OUTPUT
          echo "release_notes=Fallback: using latest tag only" >> $GITHUB_OUTPUT
          echo "changed=false" >> $GITHUB_OUTPUT

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

      - name: Create annotated tag and push
        if: ${{ steps.semver.outputs.changed }}
        run: |
          git tag -a v${{ steps.semver.outputs.version }} -m "Release v${{ steps.semver.outputs.version }}"
          git push origin --tags
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create GitHub Release (tag-only, no workspace changes)
        if: ${{ steps.semver.outputs.changed }}
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ steps.semver.outputs.version }}
          name: Release ${{ steps.semver.outputs.version }}
          body: ${{ steps.semver.outputs.release_notes }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}