build-test-deploy.yml

name: Build, Test and Deploy Gatsby
on:
  pull_request:
  push:
    branches:
      - main
  schedule:
    # Scheduled build so pipeline failures are noticed quicker.
    - cron: "30 4 * * 3,6"
  repository_dispatch:
    types:
      - content-update

jobs:
  # Fetch dependencies and build Gatsby
  build:
    name: Build
    runs-on: ubuntu-latest
    if: github.ref != 'refs/heads/gh-pages'
    steps:
      - name: Checkout
        uses: actions/checkout@main
        with:
          fetch-depth: 1
      - name: Restore Cached Build
        uses: actions/cache@v4
        id: cache-public
        with:
          path: services/personal-website/public
          key: build
      - uses: pnpm/action-setup@v4
        name: Install pnpm
        with:
          version: 8
          run_install: false
      - uses: actions/setup-node@v4
        with:
          node-version-file: ".nvmrc"
          cache: "pnpm"
      - name: Restore node_modules
        uses: actions/cache@v4
        id: cache-node_modules
        with:
          key: node_modules-${{ hashFiles('**/package-lock.json') }}
          path: |
            node_modules
            */*/node_modules
      - name: Install Dependencies
        run: |
          pnpm install --ignore-scripts --filter @alexwilson/personal-website...
      - name: Build
        run: pnpx lerna run --scope @alexwilson/personal-website build
        env:
          GITHUB_TOKEN: ${{ secrets.CONTENT_ACCESS_TOKEN }}
          CI: true
      - name: Save Build Artefact
        uses: actions/upload-artifact@v4
        with:
          name: site-artefact
          path: services/personal-website/public

  # Run unit tests on the artefact we just built.
  test:
    name: Test
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@main
        with:
          fetch-depth: 1
      - uses: pnpm/action-setup@v4
        name: Install pnpm
        with:
          version: 8
          run_install: false
      - uses: actions/setup-node@v4
        with:
          node-version-file: ".nvmrc"
          cache: "pnpm"
      - name: Restore node_modules
        uses: actions/cache@v4
        id: cache-node_modules
        with:
          key: node_modules-${{ hashFiles('**/package-lock.json') }}
          path: |
            node_modules
            */*/node_modules
      - name: Install Dependencies
        run: |
          pnpm install --ignore-scripts --filter @alexwilson/personal-website...
      - name: Run Tests
        run: pnpx lerna run --scope @alexwilson/personal-website test

  validate-feed:
    name: "Validate feed"
    needs: build
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@main
        with:
          repository: w3c/feedvalidator
      - uses: actions/setup-python@v5
        with:
          python-version: "3.7"
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
      - name: Download Website Artefact
        uses: actions/download-artifact@v4
        with:
          name: site-artefact
          path: public
      - name: "Update feed location for local testing"
        run: |
          # Replace references to feed IRI with feedvalidator.org which W3C validator uses as a mock origin.
          sed -i 's|https://alexwilson.tech/feed.xml|http://www.feedvalidator.org/public/feed.xml|g' public/feed.xml
      - name: "Validate Artefacted Feed"
        run: |
          python src/demo.py public/feed.xml

  # Deploy to Github Pages environment
  deploy-ghpages:
    name: Deploy Gatsby to Github Pages
    needs: [test, validate-feed]
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main' && github.event_name != 'pull_request'
    steps:
      - name: Checkout
        uses: actions/checkout@main
        with:
          fetch-depth: 1
      - name: Download Website Artefact
        uses: actions/download-artifact@v4
        with:
          name: site-artefact
          path: public
      - name: Deploy to Github Pages
        uses: ./.github/actions/github-pages/
        env:
          GITHUB_TOKEN: ${{ secrets.PAGES_GH_TOKEN }}
        with:
          args: public