release.yml

name: Release
on:
  push:
    branches:
      - main
      - 'release/**'

permissions:
  contents: write

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

      - uses: actions/setup-node@v4
        with:
          node-version: 20

      - name: Build bundle (smoke test)
        run: |
          npm ci
          npm run package

      - name: Release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          set -euo pipefail
          BRANCH="${GITHUB_REF_NAME}"
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          # Version source of truth = latest stable tag vX.Y.Z (pushed manually).
          # Used for BOTH production and beta — the branch only selects the channel.
          STABLE="$(git tag --list 'v*' | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -1)"
          if [ -z "$STABLE" ]; then
            echo "::error::No stable vX.Y.Z tag found. Push the release tag (e.g. v0.5.0) first."
            exit 1
          fi
          echo "Latest stable tag: $STABLE"

          if [ "$BRANCH" = "main" ]; then
            if gh release view "$STABLE" >/dev/null 2>&1; then
              echo "Release $STABLE already exists — nothing to do."
              exit 0
            fi
            echo "Production release: $STABLE"
            gh release create "$STABLE" --title "$STABLE" --generate-notes --latest
            MAJOR="${STABLE%%.*}"
            git tag -f "$MAJOR" "$STABLE"
            git push origin -f "refs/tags/$MAJOR"
            echo "Moved major alias $MAJOR -> $STABLE"
          elif [[ "$BRANCH" == release/* ]]; then
            # Beta of the latest stable tag; auto-increment N from existing beta tags.
            LAST="$(git tag --list "${STABLE}-beta.*" | sed -E 's/.*-beta\.([0-9]+)$/\1/' | sort -n | tail -1)"
            N=$(( ${LAST:-0} + 1 ))
            TAG="${STABLE}-beta.${N}"
            echo "Beta release: $TAG (base $STABLE)"
            git tag "$TAG"
            git push origin "refs/tags/$TAG"
            gh release create "$TAG" --title "$TAG" --generate-notes --prerelease
          else
            echo "Branch '$BRANCH' is not configured for release — skipping."
          fi