deploy-to-github-pages.yml

name: Deploy to GitHub Pages

on:
  push:
    branches: ['main']
  pull_request:
  workflow_dispatch:

permissions:
  contents: read
  pages: write
  id-token: write

concurrency:
  group: 'pages'
  cancel-in-progress: false

jobs:
  deploy:
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 18

      - uses: pnpm/action-setup@v2
        name: Install pnpm
        id: pnpm-install
        with:
          version: 8.6.2
          run_install: false

      - name: Install dependencies
        run: pnpm i

      - name: Build
        run: pnpm build

      - name: Prepare deployment directory
        run: |
          BRANCH_NAME=$(echo ${GITHUB_HEAD_REF:-${GITHUB_REF_NAME}} | tr '/' '_')
          mkdir -p deployment/archives
          mkdir -p deployment/${BRANCH_NAME}
          cp -r dist/* deployment/${BRANCH_NAME}/

      - name: Create archive
        run: |
          BRANCH_NAME=$(echo ${GITHUB_HEAD_REF:-${GITHUB_REF_NAME}} | tr '/' '_')
          mkdir -p deployment/archives
          tar -czf deployment/archives/${BRANCH_NAME}.tar -C deployment/${BRANCH_NAME} .

      - name: Download and unpack existing archives
        run: |
          BRANCH_NAME=$(echo ${GITHUB_HEAD_REF:-${GITHUB_REF_NAME}} | tr '/' '_')
          mkdir -p deployment/archives
          git fetch --all
          for branch in $(git branch -r | grep -v '\->' | sed 's/origin\///'); do
            safe_branch=$(echo ${branch} | tr '/' '_')
            if [ "${safe_branch}" != "${BRANCH_NAME}" ]; then
              echo "Checking for existing archive for branch: ${branch}"
              if curl --head --fail -s https://virtualidentityag.github.io/stadtKoeln-openData-frontend/archives/${safe_branch}.tar; then
                echo "Downloading archive for branch: ${branch}"
                curl -L -o deployment/archives/${safe_branch}.tar https://virtualidentityag.github.io/stadtKoeln-openData-frontend/archives/${safe_branch}.tar
                mkdir -p deployment/${safe_branch}
                tar -xzf deployment/archives/${safe_branch}.tar -C deployment/${safe_branch}
              else
                echo "Branch ${branch} was not deployed to GitHub Pages"
              fi
            fi
            done

      - name: Generate index file
        run: |
          branches=$(ls deployment/archives/*.tar | xargs -n 1 basename | sed 's/.tar//')
          node scripts/build-preview.js $branches > deployment/index.html
          rm -rf src/pages/*
          cp deployment/index.html src/pages/preview.twig
          pnpm build
          rm deployment/index.html
          mkdir -p deployment/assets
          mv dist/preview.html deployment/index.html
          mv dist/assets/styles*.css deployment/assets/

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          # Upload the deployment directory
          path: 'deployment'

      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4