name: Release SGLang Kernel Wheel (cu118)

on:
  workflow_dispatch:
    inputs:
      tag_name:
        type: string
  push:
    branches:
      - main
    paths:
      - sgl-kernel/python/sgl_kernel/version.py

jobs:
  build-wheels:
    if: github.repository == 'sgl-project/sglang'
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ['3.9']
        cuda-version: ['11.8']

    steps:
      - uses: actions/checkout@v4
        with:
          submodules: 'recursive'

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Build wheels for Python ${{ matrix.python-version }} and CUDA ${{ matrix.cuda-version }}
        run: |
          cd sgl-kernel
          chmod +x ./build.sh
          ./build.sh "${{ matrix.python-version }}" "${{ matrix.cuda-version }}"

      - name: Upload artifacts
        uses: actions/upload-artifact@v4
        with:
          name: wheel-python${{ matrix.python-version }}-cuda${{ matrix.cuda-version }}
          path: sgl-kernel/dist/*

  release:
    needs: build-wheels
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Download artifacts
        uses: actions/download-artifact@v4
        with:
          path: sgl-kernel/dist/
          merge-multiple: true
          pattern: wheel-*

      - name: Set tag name
        id: set_tag_name
        run: |
          if [ -z "${{ inputs.tag_name }}" ]; then
            TAG_NAME="v$(cat sgl-kernel/python/sgl_kernel/version.py | cut -d'"' -f2)"
            echo "tag_name=$TAG_NAME" >> $GITHUB_OUTPUT
          else
            echo "tag_name=${{ inputs.tag_name }}" >> $GITHUB_OUTPUT
          fi

      - name: Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.set_tag_name.outputs.tag_name }}
          repository: sgl-project/whl
          token: ${{ secrets.WHL_TOKEN }}
          files: |
            sgl-kernel/dist/*

      - name: Clone wheel index
        run: git clone https://oauth2:${WHL_TOKEN}@github.com/sgl-project/whl.git sgl-whl
        env:
          WHL_TOKEN: ${{ secrets.WHL_TOKEN }}

      - name: Update wheel index
        run: python3 scripts/update_kernel_whl_index.py

      - name: Push wheel index
        run: |
          cd sgl-whl
          git config --local user.name "github-actions[bot]"
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add -A
          git commit -m "update whl index"
          git push
