name: Docs

on:
  push:
    tags: [ 'v*.*.*' ]
    branches: ['main']
  pull_request:
  workflow_dispatch:

permissions:
  contents: write

jobs:
  changes:
    name: Detect Changes
    runs-on: ubuntu-latest
    # Required permissions
    permissions:
      pull-requests: read
    # Set job outputs to values from filter step
    outputs:
      docs: ${{ steps.filter.outputs.docs }}
    steps:
      - uses: actions/checkout@v4
      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            docs:
              - 'docs/**'
  test:
    needs: changes
    name: Test Build
    if: needs.changes.outputs.docs == 'true' && github.repository == 'benphelps/homepage' && github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: main
      - uses: actions/setup-python@v4
        with:
          python-version: 3.x
      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
      - uses: actions/cache@v3
        with:
          key: mkdocs-material-${{ env.cache_id }}
          path: .cache
          restore-keys: |
            mkdocs-material-
      - run: sudo apt-get install pngquant
      - run: pip install mike
      - run: pip install git+https://${GH_TOKEN}@github.com/benphelps/mkdocs-material-insiders.git
      - name: Test Docs Build
        run: MKINSIDERS=true mkdocs build
  deploy:
    needs: changes
    name: Build & Deploy 
    if: needs.changes.outputs.docs == 'true' && github.repository == 'benphelps/homepage' && github.event_name != 'pull_request'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: main
      - uses: actions/setup-python@v4
        with:
          python-version: 3.x
      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
      - uses: actions/cache@v3
        with:
          key: mkdocs-material-${{ env.cache_id }}
          path: .cache
          restore-keys: |
            mkdocs-material-
      - run: sudo apt-get install pngquant
      - run: pip install mike
      - run: pip install git+https://${GH_TOKEN}@github.com/benphelps/mkdocs-material-insiders.git
      - name: Set Git config
        run: |
          git config --global user.name "GitHub Action"
          git config --global user.email "action@github.com"
      - name: Sync gh-pages
        run: |
          git fetch origin gh-pages
          git checkout gh-pages
          git pull origin gh-pages
          git checkout main
      - name: Docs Deploy for Main
        if: github.ref == 'refs/heads/main'
        run: MKINSIDERS=true mike deploy --update --push ${{github.ref_name}}
      - name: Docs Deploy for Tags
        if: github.ref != 'refs/heads/main'
        run: MKINSIDERS=true mike deploy --update --push ${{github.ref_name}} latest
env:
  GH_TOKEN: ${{ secrets.GH_TOKEN }}