name: Publish Homebrew Tap

on:
  release:
    types: [published]
  workflow_dispatch:

jobs:
  publish-homebrew:
    runs-on: local
    needs: []
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Wait for release asset
        run: |
          TAG="${GITHUB_REF#refs/tags/}"
          VERSION="${TAG#v}"
          ASSET_URL="https://github.com/n0va-bot/kewt/releases/download/${TAG}/kewt"

          # Wait for the GitHub release asset to be available
          for i in $(seq 1 12); do
            if curl -sLf -o /dev/null "$ASSET_URL" 2>/dev/null; then
              echo "Asset available at $ASSET_URL"
              break
            fi
            echo "Waiting for release asset... (attempt $i)"
            sleep 10
          done

      - name: Render Formula
        run: |
          TAG="${GITHUB_REF#refs/tags/}"
          VERSION="${TAG#v}"
          ASSET_URL="https://github.com/n0va-bot/kewt/releases/download/${TAG}/kewt"

          curl -sL -o kewt-binary "$ASSET_URL"
          CHECKSUM=$(sha256sum kewt-binary | awk '{print $1}')
          rm -f kewt-binary

          mkdir -p brew-work/Formula
          sed -e "s/VERSION_PLACEHOLDER/${VERSION}/g" \
              -e "s/SHA256SUM_PLACEHOLDER/${CHECKSUM}/g" \
              packaging/homebrew/kewt.rb.template > brew-work/Formula/kewt.rb

          echo "Generated Formula:"
          cat brew-work/Formula/kewt.rb

      - name: Push to GitHub homebrew-tap
        run: |
          TAG="${GITHUB_REF#refs/tags/}"
          cd brew-work

          git init
          git remote add origin https://x-access-token:${{ secrets.GH_RELEASE_TOKEN }}@github.com/n0va-bot/homebrew-tap.git
          git fetch origin main || git checkout --orphan main
          git checkout main 2>/dev/null || git checkout --orphan main

          # Overwrite with the rendered Formula
          mkdir -p Formula
          cp Formula/kewt.rb Formula/kewt.rb

          git add Formula/kewt.rb
          git config user.name "${{ github.actor }}"
          git config user.email "${{ github.actor }}@users.noreply.github.com"
          git commit -m "Update kewt to ${TAG}" || echo "No changes to commit"
          git push origin main