name: deploy

on:
  push:
    branches: [main]

jobs:
  documentation:
    # Do not attempt to deploy documentation on forks
    if: github.repository_owner == 'networkx'

    runs-on: ubuntu-22.04

    steps:
      - uses: actions/checkout@v3
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.9"

      - name: Before install
        run: |
          sudo apt-get update
          sudo apt-get install graphviz graphviz-dev
          sudo apt-get install libspatialindex-dev

      - name: Install packages
        run: |
          pip install --upgrade pip wheel setuptools
          pip install -r requirements/default.txt -r requirements/test.txt
          pip install -r requirements/extra.txt
          pip install -r requirements/example.txt
          pip install -U -r requirements/doc.txt
          pip install .
          pip list

      # To set up a cross-repository deploy key:
      # 1. Create a key pair:
      #   `ssh-keygen -t ed25519 -C "nx_doc_deploy_bot@nomail"`
      # 2. Add the public key to the networkx/documentation repo
      #   - Settings -> Deploy keys -> Add new
      #   - Make sure the key has write permissions
      # 3. Add private key as a secret to networkx/networkx repo
      #   - Settings -> Secrets -> New Repository Secret
      #   - Make sure the name is the same as below: CI_DEPLOY_KEY
      - name: Install SSH agent
        if: github.ref == 'refs/heads/main'
        uses: webfactory/ssh-agent@v0.7.0
        with:
          ssh-private-key: ${{ secrets.CI_DEPLOY_KEY }}

      - name: Build docs
        if: github.ref == 'refs/heads/main'
        run: |
          export DISPLAY=:99
          make -C doc/ html

      - name: Deploy docs
        if: github.ref == 'refs/heads/main'
        uses: JamesIves/github-pages-deploy-action@releases/v4
        with:
          git-config-name: nx-doc-deploy-bot
          git-config-email: nx-doc-deploy-bot@nomail
          folder: doc/build/html
          repository-name: networkx/documentation
          branch: gh-pages
          target-folder: latest
          ssh-key: true