go/.github/workflows/pr-build-pull-request.yml

# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request
name: "PR Build: Pull Request"

on:
  pull_request:
    types: [opened, synchronize, reopened]

permissions:
  contents: write
  pull-requests: read

env:
  NEXT_VERSION: "0.0.4"

jobs:
  build:
    # Only build if PR is from the same repo (not forks)
    if: github.event.pull_request.head.repo.full_name == github.repository
    strategy:
      matrix:
        include:
          - os: ubuntu-latest
            platform: linux/amd64
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v6
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Build
        uses: host-uk/build@v3
        with:
          build-name: core
          build-platform: ${{ matrix.platform }}
          build: true
          package: true
          sign: false

  draft-release:
    needs: build
    runs-on: ubuntu-latest
    env:
      PR_NUM: ${{ github.event.pull_request.number }}
      PR_SHA: ${{ github.event.pull_request.head.sha }}
    steps:
      - uses: actions/checkout@v6

      - name: Download artifacts
        uses: actions/download-artifact@v7
        with:
          path: dist
          merge-multiple: true

      - name: Prepare release files
        run: |
          mkdir -p release
          cp dist/* release/ 2>/dev/null || true
          ls -la release/

      - name: Create draft release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="v${{ env.NEXT_VERSION }}.pr.${PR_NUM}.bid.${{ github.run_id }}"

          # Delete existing draft for this PR if it exists
          gh release delete "$TAG" -y 2>/dev/null || true
          git push origin ":refs/tags/$TAG" 2>/dev/null || true

          gh release create "$TAG" \
            --title "Draft: PR #${PR_NUM}" \
            --notes "Draft build for PR #${PR_NUM}.

          **Version:** $TAG
          **PR:** #${PR_NUM}
          **Commit:** ${PR_SHA}
          **Built:** $(date -u +'%Y-%m-%d %H:%M:%S UTC')
          **Run:** ${{ github.run_id }}

          ## Channel: Draft

          This is a draft build for testing PR changes before merge.
          Not intended for production use.

          Build artifacts available for download and testing.
          " \
            --draft \
            --prerelease \
            release/*