# Adapted from https://blog.deepjyoti30.dev/pypi-release-github-action

name: PyPI release

on:
  workflow_dispatch:
  push:
    tags:
      - "*"

jobs:
  find-and-checkout-latest-branch:
    runs-on: ubuntu-latest
    outputs:
      latest_branch: ${{ steps.set_latest_branch.outputs.latest_branch }}
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v3

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.8'

      - name: Fetch latest branch
        id: fetch_latest_branch
        run: |
          pip install -U requests packaging
          LATEST_BRANCH=$(python utils/fetch_latest_release_branch.py)
          echo "Latest branch: $LATEST_BRANCH"
          echo "latest_branch=$LATEST_BRANCH" >> $GITHUB_ENV
          
      - name: Set latest branch output
        id: set_latest_branch
        run: echo "::set-output name=latest_branch::${{ env.latest_branch }}"

  release:
    needs: find-and-checkout-latest-branch
    runs-on: ubuntu-latest

    steps:
      - name: Checkout Repo
        uses: actions/checkout@v3
        with:
          ref: ${{ needs.find-and-checkout-latest-branch.outputs.latest_branch }}
          
      - name: Setup Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.8"
      
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -U setuptools wheel twine
          pip install -U torch --index-url https://download.pytorch.org/whl/cpu
          pip install -U transformers
      
      - name: Build the dist files
        run: python setup.py bdist_wheel && python setup.py sdist
      
      - name: Publish to the test PyPI
        env:
          TWINE_USERNAME: ${{ secrets.TEST_PYPI_USERNAME }}
          TWINE_PASSWORD: ${{ secrets.TEST_PYPI_PASSWORD }}
        run: twine upload dist/* -r pypitest --repository-url=https://test.pypi.org/legacy/    

      - name: Test installing diffusers and importing
        run: |
          pip install diffusers && pip uninstall diffusers -y
          pip install -i https://testpypi.python.org/pypi diffusers
          python -c "from diffusers import __version__; print(__version__)"
          python -c "from diffusers import DiffusionPipeline; pipe = DiffusionPipeline.from_pretrained('fusing/unet-ldm-dummy-update'); pipe()"
          python -c "from diffusers import DiffusionPipeline; pipe = DiffusionPipeline.from_pretrained('hf-internal-testing/tiny-stable-diffusion-pipe', safety_checker=None); pipe('ah suh du')"
          python -c "from diffusers import *"

      - name: Publish to PyPI
        env:
          TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
          TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
        run: twine upload dist/* -r pypi
