name: "Deploy Docs"
on:
  push:
    branches: ["master", "release/stable"]
  pull_request:
    branches: ["master", "release/*"]
    paths:
      - ".github/workflows/docs-deploy.yml"
      # TODO: this workflow is just for debugging. extend the paths that should trigger it

defaults:
  run:
    shell: bash

jobs:
  # https://github.com/marketplace/actions/deploy-to-github-pages
  build-docs-deploy:
    if: github.repository_owner == 'Lightning-AI'
    runs-on: ubuntu-latest
    container:
      image: pytorchlightning/pytorch_lightning:docs
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v3
        # If you're using actions/checkout@v3 you must set persist-credentials to false in most cases for the deployment to work correctly.
        with:
          persist-credentials: false

      - uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_KEY_ID }}
          aws-region: us-east-1
      - run: aws s3 sync s3://sphinx-packages/ pypi/

      # Note: This uses an internal pip API and may not always work
      # https://github.com/actions/cache/blob/master/examples.md#multiple-oss-in-a-workflow
      - name: Cache pip
        uses: actions/cache@v3
        with:
          path: ~/.cache/pip
          key: deploy-docs-pip-${{ hashFiles('requirements/**/*.txt') }}
          restore-keys: deploy-docs-pip-

      - name: Install package & dependencies
        env:
          FREEZE_REQUIREMENTS: 1
          TORCH_URL: "https://download.pytorch.org/whl/cpu/torch_stable.html"
        run: |
          pip --version
          pip install -e . -r requirements/app/docs.txt \
            -f ${TORCH_URL} -f pypi
          pip list

      - name: Make Documentation
        working-directory: ./docs/source-app
        run: |
          # First run the same pipeline as Read-The-Docs
          make clean
          make html --jobs 2

      - name: Deploy 🚀
        uses: JamesIves/github-pages-deploy-action@v4.4.1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          branch: gh-pages # The branch the action should deploy to.
          folder: docs/build/html # The folder the action should deploy.
          clean: true # Automatically remove deleted files from deploy branch
          target-folder: docs # If you'd like to push the contents of the deployment folder into a specific directory
          single-commit: true # you'd prefer to have a single commit on the deployment branch instead of full history
        if: github.event_name == 'push' && github.ref == 'refs/heads/master'

      - name: Authenticate to Google Cloud
        if: github.event_name == 'push'
        uses: google-github-actions/auth@v1
        with:
          credentials_json: ${{ secrets.GCS_SA_KEY }}

      - name: Setup gcloud
        if: github.event_name == 'push'
        uses: google-github-actions/setup-gcloud@v1
        with:
          project_id: ${{ secrets.GCS_PROJECT }}

      # Uploading docs to GCS, so they can be served on lightning.ai
      - name: Upload docs/stable to GCS 🪣
        if: github.event_name == 'push' && startsWith(github.ref, 'refs/heads/release/')
        run: gsutil -m rsync -d -R docs/build/html/ gs://lightning-docs-stable

      # Uploading docs to GCS, so they can be served on lightning.ai
      - name: Upload docs/latest to GCS 🪣
        if: github.event_name == 'push' && github.ref == 'refs/heads/master'
        run: gsutil -m rsync -d -R docs/build/html/ gs://lightning-docs-latest