build.yml

name: Release

on:
  push:
    tags:
      - 'v*'

jobs:
  release:
    name: goreleaser
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v4
        with:
          go-version: '1.21'

      - name: Run goreleaser
        uses: goreleaser/goreleaser-action@v3
        with:
          version: latest
          args: release --clean
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  update-homebrew:
    name: Update Homebrew Tap
    runs-on: ubuntu-latest
    needs: release
    steps:
      - name: Checkout this repo
        uses: actions/checkout@v4

      - name: Get release asset URL and sha256
        id: asset
        run: |
          set -e
          TAG=${GITHUB_REF#refs/tags/}
          API_URL="https://api.github.com/repos/${GITHUB_REPOSITORY}/releases/tags/${TAG}"
          # try to find darwin_amd64 asset; fallback to first asset
          ASSET_URL=$(curl -s $API_URL | jq -r '.assets[] | select(.name|test("darwin_amd64")) | .browser_download_url' || true)
          if [ -z "$ASSET_URL" ] || [ "$ASSET_URL" = "null" ]; then
            ASSET_URL=$(curl -s $API_URL | jq -r '.assets[0].browser_download_url')
          fi
          if [ -z "$ASSET_URL" ] || [ "$ASSET_URL" = "null" ]; then
            echo "no asset url"; exit 1
          fi
          curl -L "$ASSET_URL" -o /tmp/bb.tar.gz
          sha256=$(shasum -a 256 /tmp/bb.tar.gz | awk '{print $1}')
          echo "asset_url=$ASSET_URL" >> $GITHUB_OUTPUT
          echo "sha256=$sha256" >> $GITHUB_OUTPUT
          echo "version=$TAG" >> $GITHUB_OUTPUT

      - name: Checkout homebrew tap
        uses: actions/checkout@v4
        with:
          repository: livepo/homebrew-tap
          token: ${{ secrets.HOMEBREW_GITHUB_TOKEN }}
          path: tap
          fetch-depth: 0

      - name: Update formula file in tap
        run: |
          set -e
          # ensure tap repo is aligned with remote master before making edits
          cd tap
          git checkout .
          git fetch origin
          git checkout master || git switch -c master
          git reset --hard origin/master
          cd ..

          TAG=${{ steps.asset.outputs.version }}
          # strip leading v if present
          VERSION=${TAG#v}
          sha256=${{ steps.asset.outputs.sha256 }}
          ASSET_URL=${{ steps.asset.outputs.asset_url }}
          # Ensure formula exists
          if [ ! -f tap/Formula/bb.rb ]; then
            echo "tap/Formula/bb.rb not found"; ls -al tap; exit 1
          fi
          # Replace placeholders ${VERSION} and ${sha256}
          sed -i.bak "s|\${VERSION}|${VERSION}|g" tap/Formula/bb.rb
          sed -i.bak "s|\${sha256}|${sha256}|g" tap/Formula/bb.rb
          # Replace url line with actual asset URL
          sed -n '1,200p' tap/Formula/bb.rb >/tmp/bb.rb.tmp || true
          awk -v url="${ASSET_URL}" '{ if ($1=="url") { print "  url \""url"\"" } else print $0 }' /tmp/bb.rb.tmp > tap/Formula/bb.rb

      - name: Commit and push formula
        run: |
          set -e
          cd tap
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add Formula/bb.rb
          # commit only if there are changes
          if git diff --staged --quiet && git diff --quiet; then
            echo "no changes to commit"
          else
            git commit -m "chore: bump bb to ${VERSION}"
            git push origin HEAD:master
          fi
        env:
          GIT_ASKPASS: /bin/true
          HOMEBREW_GITHUB_TOKEN: ${{ secrets.HOMEBREW_GITHUB_TOKEN }}