build.yaml

name: Build and Deploy
on:
  workflow_dispatch:
  push:
    branches:
      - main
jobs:
  Build:
    permissions:
      pages: write
      id-token: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    steps:
        - name: Download prod build
          id: prevbuild
          uses: dawidd6/action-download-artifact@master
          with:
            workflow: build.yaml
            branch: main
            name: github-pages
            path: site
            if_no_artifact_found: warn
        - name: Extract previous build
          if: steps.prevbuild.outputs.found_artifact != 'false'
          run: |
            cd site
            tar -xf artifact.tar && rm artifact.tar
        - name: git clone big_imgs
          uses: actions/checkout@v4
          with:
            path: big_imgs
        - name: git clone imgs
          uses: actions/checkout@v4
          with:
            repository: buddhist-uni/imgs
            path: imgs
        - name: Generate images
          run: |
            cd big_imgs
            python build.py --remove-old --verbose --dest ../site --cores 3
        - name: Upload Build as Artifact
          uses: actions/upload-pages-artifact@main
          with:
            path: site
            retention-days: 90
        - name: Deploy to GitHub Pages
          id: deployment
          uses: actions/deploy-pages@main
        - name: Invalidate CloudFlare Cache for Modified Items
          shell: bash
          run: |
            purgeaurl(){
              HTTP_RESPONSE=$(curl --silent --show-error -X POST "https://api.cloudflare.com/client/v4/zones/${{ secrets.CF_ZONE }}/purge_cache" -H "Authorization: Bearer ${{ secrets.CF_API_TOKEN }}" -H "Content-Type:application/json" -w "HTTP_STATUS:%{http_code}" --data "{\"files\":[\"${1}\"]}")
              HTTP_BODY=$(echo "${HTTP_RESPONSE}" | sed -E 's/HTTP_STATUS\:[0-9]{3}$//')
              HTTP_STATUS=$(echo "${HTTP_RESPONSE}" | tr -d '\n' | sed -E 's/.*HTTP_STATUS:([0-9]{3})$/\1/')
              if [ "${HTTP_STATUS}" -eq "200" ]; then
                SUCCESS=$(echo ${HTTP_BODY} | python3 -c "import sys, json;print(json.load(sys.stdin)['success'])")
                if [ "${SUCCESS}" = "True" ]; then
                  echo "Purged $1"
                else
                  echo "::warning title=CloudFlare Cache-Bust Failure::Failed to purge $1 => ${HTTP_BODY}"
                fi
              else
                echo "::warning title=CloudFlare Cache-Bust Failure::Failed to purge $1 => ($HTTP_STATUS): ${HTTP_BODY}"
              fi
            }
            export -f purgeaurl
            if [ -f "site/modified_files.txt" ]; then
              cat site/modified_files.txt | sed 's/^/https:\/\/buddhistuniversity.net\/big_imgs\//g' | xargs -P 100 -I {} bash -c 'purgeaurl "{}"'
            else
              echo "No modified files to purge"
            fi