name: Release

on:
  push:
    tags:
      - 'v*.*.*'

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Verify tag matches VERSION
        run: |
          set -euo pipefail
          tag="${GITHUB_REF_NAME#v}"
          file_version=$(tr -d '[:space:]' < VERSION)
          if [ "$tag" != "$file_version" ]; then
            echo "::error::Tag v$tag does not match VERSION file ($file_version)"
            echo "Bump VERSION first, then tag and push."
            exit 1
          fi
          echo "VERSION=$file_version OK"

      - name: Check skip-release marker
        id: skip
        run: |
          msg=$(git for-each-ref "refs/tags/${GITHUB_REF_NAME}" --format='%(contents:subject)')
          if echo "$msg" | grep -q '\[skip-release\]'; then
            echo "skip=true (tag message contains [skip-release])"
            echo "skip=true" >> "$GITHUB_OUTPUT"
          else
            echo "skip=false"
            echo "skip=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Create GitHub release
        if: steps.skip.outputs.skip != 'true'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.ref_name }}
          name: ${{ github.ref_name }}
          prerelease: true
          generate_release_notes: true