site-deployment.yaml

name: Azure Static Web Apps CI/CD

# This GitHub Action workflow triggers in two scenarios - 
# 1. When a push is made to the main branch
# 2. When a pull request is either opened, synchronized, reopened,
#    or closed, and the target is the main branch. If the change
#    is just to the podcast_audio file, then it is ignored.

on:
  push:
    branches:
      - main
      - staging
    paths-ignore:
      - 'podcast_audio/**'
  pull_request:
    types: [opened, synchronize, reopened, closed]
    branches:
      - main
      - staging
    paths-ignore:
      - 'podcast_audio/**'
  schedule:
    - cron: '0 0 * * 0'
  workflow_dispatch:

# The workflow has several phases. Phases 1, 2 and 3 run on a push, or if the pull request activity
# type is not 'closed'.
#
# 1.  A validation phase, which is split into two separate jobs that run in parallel.
# 1.1 A set of steps that compress images
# 1.2 A set of steps that lint the markdown contents of the website
#
# 2.  Build the Static Website by using the Hugo CLI.
#
# 3.  Deploy the website to Azure Static Web Apps
# 3.1 If the workflow was triggered by a pull request (not a closed activity), then publish the static assets
#     to the static web app. This is associated with the GitHub Actions staging.azure environment.
# 3.2 If the workflow was triggered by a push to main, then publish the static assets to the static
#     web app. This is associated with the GitHub Actions production.azure environment, so requires manual approval.
#
# 4   If the workflow was triggered by a Pull Request close event, then close the staging sites which are open.

# Environment variables used for consistency across the workflow.
env:
  HUGO_VERSION: '0.112.2'

jobs:
  # A set of steps used to compress the images, making sure that images are compressed ahead of publishing to the site.
  # This is done to make sure that the browsing experience remains speedy.
  compressor:
    if: github.event_name == 'pull_request' && github.event.action != 'closed'
    uses: CloudWithChris/Reusable-Workflows/.github/workflows/compress-images.yaml@main
    with:
      friendly_environment: Compress
    secrets:
      githubtoken: ${{ secrets.GITHUB_TOKEN }}
  # A set of steps used to lint the markdown files used to generate the content.
  # This is done to make sure there are consistent standards being adopted when writing the material.
  # These standards are configured in the /.github/linters folder of the repository.
  lint:
    if: github.event_name == 'push' || (github.event.pull_request.head.repo.full_name == github.repository && github.event.action != 'closed')
    uses: CloudWithChris/Reusable-Workflows/.github/workflows/lint-static-content.yaml@main
    with:
      friendly_environment: Linter
    secrets:
      githubtoken: ${{ secrets.GITHUB_TOKEN }}
  # A set of steps used to render the website from the markdown, theme and assets into the HTML, CSS, JS and images that are delivered to a user.
  build:
    if: github.event_name == 'push' || (github.event.pull_request.head.repo.full_name == github.repository && github.event.action != 'closed')
    runs-on: ubuntu-latest
    permissions:
      contents: 'read'
      id-token: 'write'
    steps:            
    - uses: actions/checkout@v3
      with:
        submodules: 'true'
    - name: 'Dependency Review'
      if: github.event_name == 'pull_request' && github.event.action != 'closed'
      uses: actions/dependency-review-action@v3
    - name: 'Install Node Dependencies'
      run: npm ci    
    - name: 'Setup Hugo on Runner'
      uses: peaceiris/actions-hugo@v2
      with:
        hugo-version: ${{ env.HUGO_VERSION }}
        extended: true
    - name: Setup Pages
      id: pages
      uses: actions/configure-pages@v3
    - id: 'auth'
      name: 'Authenticate to Google Cloud'
      uses: 'google-github-actions/auth@v1'
      with:
        workload_identity_provider: '${{ secrets.GH_GOOGLE_FED_PROVIDER }}'
        service_account: '${{ secrets.GA_API_SERVICE_ACC_EMAIL}}'
    - run: |
        npm install @google-analytics/data
    - uses: actions/github-script@v6
      env:
        GA_TRACKING_ID: ${{ secrets.GA_TRACKING_ID }}
      with:
        script: |
          const script = require('.github/workflows/scripts/google-analytics.js')
          await script({github, context, core})
    - name: 'Update cache version for Service Worker'
      working-directory: 'static'
      run: |
        sed -i "s/GITHUB_TOKEN_FOR_SW_CACHE_VERSION/$GITHUB_SHA/" sw.js
    - name: 'Build and Minify Hugo Contents'
      run: hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
    - name: Upload artifact
      uses: actions/upload-pages-artifact@v1
      with:
        path: ./public

  # Deployment job
  deploy:
    if: github.ref == 'refs/heads/main' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
    permissions:   
      contents: read
      pages: write
      id-token: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v2