release.yml

name: Create GitHub release

on:
  push:
    tags:
      - "*"

permissions:
  contents: write

jobs:
  release:
    name: Release tagged main commit
    runs-on: ubuntu-latest

    steps:
      - name: Check out repository history
        uses: actions/checkout@v5
        with:
          fetch-depth: 0
          lfs: true

      - name: Check whether the tag is on main
        id: tag-check
        env:
          TAG_NAME: ${{ github.ref_name }}
        shell: bash
        run: |
          git fetch --no-tags origin main
          tag_commit="$(git rev-list -n 1 "$TAG_NAME")"

          if git merge-base --is-ancestor "$tag_commit" origin/main; then
            echo "on_mainline=true" >> "$GITHUB_OUTPUT"
          else
            echo "on_mainline=false" >> "$GITHUB_OUTPUT"
            echo "Tag $TAG_NAME does not point to a commit on main; skipping release."
          fi

      - name: Set up Java 17
        if: steps.tag-check.outputs.on_mainline == 'true'
        uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: "17"
          cache: gradle

      - name: Set up Node.js
        if: steps.tag-check.outputs.on_mainline == 'true'
        uses: actions/setup-node@v6
        with:
          node-version: "22"
          cache: npm
          cache-dependency-path: extension_host/package-lock.json

      - name: Build release extension
        if: steps.tag-check.outputs.on_mainline == 'true'
        run: ./scripts/build.sh --mode release --clean

      - name: Create GitHub release
        if: steps.tag-check.outputs.on_mainline == 'true'
        env:
          GH_TOKEN: ${{ github.token }}
          TAG_NAME: ${{ github.ref_name }}
        run: |
          if ! gh release view "$TAG_NAME" >/dev/null 2>&1; then
            gh release create "$TAG_NAME" \
              --verify-tag \
              --generate-notes \
              --title "$TAG_NAME"
          fi

          gh release upload "$TAG_NAME" dist/ZooCode-*.zip --clobber