review-site.yml

name: Build & deploy review site
on:
  pull_request:
    paths-ignore:
      - 'dist/**'
  push:
    paths-ignore:
      - 'dist/**'
    branches:
      - main
      - 2.x

jobs:
  lint-code:
    name: Check code for linting errors
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout repository to workspace
        uses: actions/checkout@v3
      - name: Set variables for Docker images
        run: |
          oldhash=${{ hashFiles('Dockerfile', 'package.json', 'package-lock.json', 'scripts/*') }}
          registry='ghcr.io'
          imageprefix="${registry}/${GITHUB_REPOSITORY}/"
          imagename='az-nodejs-ephemeral'
          imagestem="${imageprefix}${imagename}:"
          echo "AZ_DOCKER_REGISTRY=${registry}" >> ${GITHUB_ENV}
          echo "AZ_OLD_HASH=${oldhash}" >> ${GITHUB_ENV}
          echo "AZ_IMAGE_STEM=${imagestem}" >> ${GITHUB_ENV}
          echo "AZ_EPHEMERAL_IMAGE=${imagestem}${oldhash}" >> ${GITHUB_ENV}
          echo "AZ_BOOTSTRAP_SOURCE_DIR=/arizona-bootstrap-source" >> ${GITHUB_ENV}
          echo "AZ_BOOTSTRAP_FROZEN_DIR=/azbuild/arizona-bootstrap" >> ${GITHUB_ENV}
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Docker authentication
        run: |
          docker login "$AZ_DOCKER_REGISTRY" -u "$GITHUB_ACTOR" -p ${{ secrets.AZ_DOCKER_REGISTRY_TOKEN }}
      - name: Search for Docker image
        id: dockerpull
        continue-on-error: true
        run: |
          docker pull "$AZ_EPHEMERAL_IMAGE"
      - name: Conditionally rebuild and save the Docker image
        if: ${{ steps.dockerpull.outcome == 'failure' }}
        run: |
          workingtitle=$(docker build -q . )
          tempname="old${AZ_OLD_HASH}"
          docker run --name "$tempname" "$workingtitle" true
          docker cp -a "${tempname}:${AZ_BOOTSTRAP_FROZEN_DIR}/." .
          docker rm "$tempname"
          lockhash=${{ hashFiles('Dockerfile', 'package.json', 'package-lock.json', 'scripts/*') }}
          ephemeral="${AZ_IMAGE_STEM}${lockhash}"
          docker tag "$workingtitle" "$ephemeral"
          docker push "$ephemeral"
          echo "AZ_EPHEMERAL_IMAGE=${ephemeral}" >> ${GITHUB_ENV}
      - name: Run the code linting checks
        run: |
          sudo touch config.yml
          sudo find . -path "./.git" -prune -o -exec chown 1000:1000 {} \;
          sudo chown 1000:1000 .
          docker run --rm -v $(pwd):"${AZ_BOOTSTRAP_SOURCE_DIR}" "$AZ_EPHEMERAL_IMAGE" lint
  review-site:
    name: Build & deploy review site
    needs: lint-code
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout repository to workspace
        uses: actions/checkout@v3
        with:
          token: ${{ secrets.REPO_DISPATCH_TOKEN }}
          fetch-depth: 20
      - name: Find the push source branch name
        if: ${{ github.event_name != 'pull_request' }}
        run: echo "AZ_TRIMMED_REF=${GITHUB_REF#refs/*/}" >> ${GITHUB_ENV}
      - name: Find the pull request source branch name
        if: ${{ github.event_name == 'pull_request' }}
        run: echo "AZ_TRIMMED_REF=${GITHUB_HEAD_REF}" >> ${GITHUB_ENV}
      - name: Set variables for Docker images
        run: |
          oldhash=${{ hashFiles('Dockerfile', 'package.json', 'package-lock.json', 'scripts/*') }}
          registry='ghcr.io'
          imageprefix="${registry}/${GITHUB_REPOSITORY}/"
          imagename='az-nodejs-ephemeral'
          imagestem="${imageprefix}${imagename}:"
          echo "AZ_DOCKER_REGISTRY=${registry}" >> ${GITHUB_ENV}
          echo "AZ_OLD_HASH=${oldhash}" >> ${GITHUB_ENV}
          echo "AZ_IMAGE_STEM=${imagestem}" >> ${GITHUB_ENV}
          echo "AZ_EPHEMERAL_IMAGE=${imagestem}${oldhash}" >> ${GITHUB_ENV}
          echo "AZ_BOOTSTRAP_SOURCE_DIR=/arizona-bootstrap-source" >> ${GITHUB_ENV}
          echo "AZ_BOOTSTRAP_FROZEN_DIR=/azbuild/arizona-bootstrap" >> ${GITHUB_ENV}
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Docker authentication
        run: |
          docker login "$AZ_DOCKER_REGISTRY" -u "$GITHUB_ACTOR" -p ${{ secrets.GITHUB_TOKEN }}
      - name: Search for Docker image
        id: dockerpull
        continue-on-error: true
        run: |
          docker pull "$AZ_EPHEMERAL_IMAGE"
      - name: Conditionally rebuild and save the Docker image
        if: ${{ steps.dockerpull.outcome == 'failure' }}
        run: |
          workingtitle=$(docker build -q . )
          tempname="old${AZ_OLD_HASH}"
          docker run --name "$tempname" "$workingtitle" true
          docker cp -a "${tempname}:${AZ_BOOTSTRAP_FROZEN_DIR}/." .
          docker rm "$tempname"
          lockhash=${{ hashFiles('Dockerfile', 'package.json', 'package-lock.json', 'scripts/*') }}
          ephemeral="${AZ_IMAGE_STEM}${lockhash}"
          docker tag "$workingtitle" "$ephemeral"
          docker push "$ephemeral"
          echo "AZ_EPHEMERAL_IMAGE=${ephemeral}" >> ${GITHUB_ENV}
      - name: Build variables
        run: |
          echo "AZ_REVIEW_BASEURL=/arizona-bootstrap/${AZ_TRIMMED_REF}" >> ${GITHUB_ENV}
          echo "AZ_SITE_HOST=https://review.digital.arizona.edu" >> ${GITHUB_ENV}
      - name: Build review site artifact
        run: |
          sudo touch config.yml
          sudo find . -path "./.git" -prune -o -exec chown 1000:1000 {} \;
          sudo chown 1000:1000 .
          docker run --rm -e "AZ_SITE_BASE_URL=${AZ_REVIEW_BASEURL}" -e "AZ_SITE_HOST=${AZ_SITE_HOST}" -v $(pwd):"${AZ_BOOTSTRAP_SOURCE_DIR}" "$AZ_EPHEMERAL_IMAGE" expose-review-site
      - name: Push back the updated deployable files to the repository (CSS, JS, and so on)
        run: |
          git config --global user.email "${GITHUB_ACTOR}@users.noreply.github.com"
          git config --global user.name "${GITHUB_ACTOR}"
          if [ -n "$(git status --porcelain dist)" ] ; then
            git add dist
            git commit -m "Save updated CSS and JS files before deployment to ${AZ_SITE_HOST}${AZ_REVIEW_BASEURL}"
            git push --force origin "HEAD:${AZ_TRIMMED_REF}"
          fi
        shell: sh
      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v2
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: us-west-2
      - name: Deploy review site artifact to S3 + CloudFront
        run: |
          aws s3 sync --delete _site/ s3://${{ secrets.REVIEW_BUCKET }}${AZ_REVIEW_BASEURL}/
          aws cloudfront create-invalidation --distribution-id ${{ secrets.REVIEW_CDN }} --paths ${AZ_REVIEW_BASEURL}/*
      - name: Display review site URL
        # TODO: replace with step that publishes link to review site on PR.
        run: |
          echo "Review site deployed to ${AZ_SITE_HOST}${AZ_REVIEW_BASEURL}"