pr_checker_build.yml

name: "Pull Request Checker 🛃"

# Inspired from: https://github.com/docker-mailserver/docker-mailserver/blob/master/.github/workflows/docs-preview-prepare.yml

on:
  pull_request:
    branches:
      - main

# Environment variables
env:
  BUILD_DIR: build/mkdocs/site
  NETLIFY_SITE_NAME: geotribu-preprod
  NETLIFY_SITE_PREFIX: geotribu-english-${{ github.event.pull_request.number }}
  PR_NUMBER: ${{ github.event.pull_request.number }}

# If the workflow for a PR is triggered multiple times, previous existing runs will be canceled.
# eg: Applying multiple suggestions from a review directly via the Github UI.
# Instances of the 2nd phase of this workflow (via `workflow_run`) presently lack concurrency limits due to added complexity.
concurrency:
  group: deploypreview-pullrequest-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  build:
    name: "Check site build 📦"
    runs-on: ubuntu-latest
    if: ${{ github.repository_owner == 'geotribu' }}

    steps:
      - name: Get source code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: 3.11
          cache: "pip"

      - name: Install dependencies
        id: dependencies
        env:
          GH_TOKEN_MATERIAL_INSIDERS: ${{ secrets.GH_TOKEN_MATERIAL_INSIDERS }}
        run: |
          python -m pip install -U pip setuptools wheel

          # if secret (PR created by repo collaborator) exists = paid features, else only free
          if [[ -z "${GH_TOKEN_MATERIAL_INSIDERS}" ]]; then
            echo "::warning:: L'accès aux token est réservé aux comptes avec droits d'écriture sur le dépôt. La version gratuite du thème est donc utilisée sans mots-clés, etc.)"
            python -m pip install -U -r requirements-free.txt
            echo "MKDOCS_CONFIG_FILENAME=mkdocs-free.yml" >> $GITHUB_ENV
          else
            # install insiders version using token
            python -m pip install -U -r requirements-insiders.txt
            echo "MKDOCS_CONFIG_FILENAME=mkdocs.yml" >> $GITHUB_ENV
          fi

      - name: Cache build dependencies (external assets downloaded)
        uses: actions/cache@v4
        with:
          key: ${{ github.ref }}
          path: .cache

      - name: Build in strict mode
        env:
          MKDOCS_EDIT_URI: "edit/$GITHUB_HEAD_REF/content"
          MKDOCS_ENABLE_PLUGIN_RSS: true
          MKDOCS_ENABLE_PLUGIN_SOCIAL: true
          MKDOCS_ENABLE_PLUGIN_SOCIAL_CARDS: true
          MKDOCS_PLUGIN_BLOG_DRAFT_FUTURE_DATE: false
          MKDOCS_SITE_NAME: "Geotribu in English PREVIEW - PR ${{ github.event.pull_request.number }}"
          MKDOCS_SITE_COPYRIGHT: '<a href="https://www.netlify.com/"><img alt="Deploys by Netlify" src="https://www.netlify.com/img/global/badges/netlify-color-accent.svg" style="float: right;"></a>'
        run: |
          # store custom env vars that need resolution
          export MKDOCS_EDIT_URI="edit/${GITHUB_HEAD_REF}/content"
          export MKDOCS_SITE_URL="https://${NETLIFY_SITE_PREFIX}--${NETLIFY_SITE_NAME}.netlify.app/"

          # merge different configs
          python scripts/100_mkdocs_config_merger.py -c ${{ env.MKDOCS_CONFIG_FILENAME }}

          # build
          mkdocs build --config-file ${{ env.MKDOCS_CONFIG_FILENAME }} --strict

          # save mkdocs.yml for debug
          cp ${{ env.MKDOCS_CONFIG_FILENAME }} ${{ env.BUILD_DIR }}

          # remove files reserved for production
          rm ${{ env.BUILD_DIR }}/CNAME
          rm ${{ env.BUILD_DIR }}/robots.txt
          rm ${{ env.BUILD_DIR }}/sitemap.xml
          rm ${{ env.BUILD_DIR }}/sitemap.xml.gz

          # store specific env vars
          echo "MKDOCS_EDIT_URI=$MKDOCS_EDIT_URI"                   >> pr.env
          echo "MKDOCS_SITE_COPYRIGHT=$MKDOCS_SITE_COPYRIGHT"       >> pr.env
          echo "MKDOCS_SITE_NAME=$MKDOCS_SITE_NAME"                 >> pr.env
          echo "MKDOCS_SITE_URL=$MKDOCS_SITE_URL"                   >> pr.env

        # Minimize risk of upload failure by bundling files to a single compressed archive (tar + zstd).
        # Bundles build dir and env file into a compressed archive, nested file paths will be preserved.
      - name: "Prepare artifact for transfer"
        run: |
          # Save ENV for transfer
          echo "GITHUB_REPOSITORY=$GITHUB_REPOSITORY"                 >> pr.env
          echo "GITHUB_HEAD_REF=$GITHUB_HEAD_REF"                     >> pr.env
          echo "PR_HEADSHA=${{ github.event.pull_request.head.sha }}" >> pr.env
          echo "PR_NUMBER=${{ github.event.pull_request.number }}"    >> pr.env
          echo "PR_TITLE=${{ github.event.pull_request.title }}"      >> pr.env
          echo "NETLIFY_SITE_NAME=${{ env.NETLIFY_SITE_NAME }}"       >> pr.env
          echo "NETLIFY_SITE_PREFIX=${{ env.NETLIFY_SITE_PREFIX }}"   >> pr.env
          echo "BUILD_DIR=${{ env.BUILD_DIR }}"                       >> pr.env

          # archive build dir
          tar --zstd -cf artifact.tar.zst pr.env ${{ env.BUILD_DIR }}

      - name: Save build website as artifact
        uses: actions/upload-artifact@v4
        with:
          name: pr-build-website
          path: artifact.tar.zst
          retention-days: 1