docbuild.yml

name: Documentation Build

on:
  pull_request:
    types: [opened, synchronize, reopened]
    branches:
      - main
      - 'v*-branch'
    paths:
      - '.github/workflows/docbuild.yml'
      - '**.rst'
      - '**/Kconfig'
      - '**/sample.yaml'
      - 'doc/**'
      - 'applications/**'
      - 'include/**'
      - 'lib/**'
      - 'doc/requirements.txt'
      - 'scripts/tools-versions-*.yml'
      - 'west.yml'
  push:
    branches:
      - main
      - 'v*-branch'
    tags:
      - v*

jobs:
  build:
    runs-on: ubuntu-latest
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
      cancel-in-progress: true
    steps:
      - name: Checkout sources
        uses: nrfconnect/action-checkout-west-update@main

      - name: cache-pip
        uses: actions/cache@v4
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-doc-pip

      - name: Install packages
        run: |
          sudo apt update
          sudo apt-get install -y ninja-build mscgen plantuml
          sudo snap install yq
          DOXYGEN_VERSION=$(yq ".doxygen.version" ./ncs/nrf/scripts/tools-versions-linux.yml)
          wget --no-verbose "https://github.com/doxygen/doxygen/releases/download/Release_${DOXYGEN_VERSION//./_}/doxygen-${DOXYGEN_VERSION}.linux.bin.tar.gz"
          tar xf doxygen-${DOXYGEN_VERSION}.linux.bin.tar.gz
          echo "${PWD}/doxygen-${DOXYGEN_VERSION}/bin" >> $GITHUB_PATH

      - name: Install Python dependencies
        working-directory: ncs
        run: |
          sudo pip3 install -U setuptools wheel pip
          pip3 install -r nrf/doc/requirements.txt

      - name: West zephyr-export
        working-directory: ncs
        run: |
          west zephyr-export

      - name: Build documentation
        working-directory: ncs/nrf
        run: |
          cmake -GNinja -Bdoc/_build -Sdoc
          ninja -C doc/_build

      - name: Check version
        run: |
          VERSION_REGEX="^v([0-9a-z\.\-]+)$"
          if [[ ${GITHUB_REF#refs/tags/} =~ $VERSION_REGEX ]]; then
            VERSION=${BASH_REMATCH[1]}
          elif [[ ${GITHUB_REF#refs/heads/} == "main" ]]; then
            VERSION="latest"
          elif [[ "${{ github.event_name }}" == "pull_request" ]]; then
            VERSION="pr-${{ github.event.number }}"
          fi

          echo "VERSION=${VERSION}" >> $GITHUB_ENV

      - name: Prepare legacy upload
        if: ${{ !contains(github.event.pull_request.labels.*.name, 'external') || contains(github.event.pull_request.labels.*.name, 'CI-trusted-author') }}
        working-directory: ncs/nrf
        run: |
          MONITOR="monitor_${{ github.run_id }}.txt"

          # Create documentation upload files
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
            ARCHIVE="legacy-ncs-pr-${{ github.event.number }}.zip"
            echo "publish2 dev PR-${{ github.event.number }} ${ARCHIVE}" > "${MONITOR}"
            echo "${{ github.event.number }}" > pr.txt
          else
            if [ -z "${VERSION}" ]; then
              echo "Not a release or latest, skipping publish"
              exit 0
            fi

            ARCHIVE="legacy-ncs-${VERSION}.zip"
            echo "publish2 main ${VERSION} ${ARCHIVE}" > "${MONITOR}"
          fi

          cd doc/_build/html
          zip -rq "${ARCHIVE}" .
          mv "${ARCHIVE}" ../../../

      - name: Prepare Zoomin upload
        if: ${{ !contains(github.event.pull_request.labels.*.name, 'external') || contains(github.event.pull_request.labels.*.name, 'CI-trusted-author') }}
        working-directory: ncs/nrf
        run: |
          mkdir doc/_build/html-doxygen

          # Zephyr APIs (Doxygen)
          mv doc/_build/html/zephyr/doxygen/html doc/_build/html-doxygen/zephyr-apis

          cp doc/_zoomin/zephyr.apis.custom.properties doc/_build/html-doxygen/zephyr-apis/custom.properties
          sed -i 's/__VERSION__/'"${VERSION}"'/g' doc/_build/html-doxygen/zephyr-apis/custom.properties

          cp doc/_zoomin/zephyr.apis.tags.yml doc/_build/html-doxygen/zephyr-apis/tags.yml
          sed -i 's/__VERSION__/'"${VERSION}"'/g' doc/_build/html-doxygen/zephyr-apis/tags.yml

          # NCS (Sphinx)
          cp doc/_zoomin/ncs.custom.properties doc/_build/html/custom.properties
          sed -i 's/__VERSION__/'"${VERSION}"'/g' doc/_build/html/custom.properties

          cp doc/_zoomin/ncs.tags.yml doc/_build/html/tags.yml
          sed -i 's/__VERSION__/'"${VERSION}"'/g' doc/_build/html/tags.yml

          # Patch links from Zephyr (Sphinx) to Zephyr APIs (Doxygen)
          find doc/_build/html/zephyr -type f -name "*.html" -exec \
            sed -ri "/href=\"(.*)\/doxygen\/html\/(.*)\"/{s//href=\"\1\/..\/..\/..\/zephyr-apis-$VERSION\/page\/\2\"/; :a s/__/_/;ta; }" {} \;

          # Prepare archives
          cd doc/_build/

          cd html-doxygen/zephyr-apis
          ARCHIVE="zephyr-apis-${VERSION}.zip"
          zip -rq "${ARCHIVE}" .
          mv "${ARCHIVE}" ../../../../
          cd ../../

          ARCHIVE="ncs-${VERSION}.zip"
          cd html
          zip -rq "${ARCHIVE}" .
          mv "${ARCHIVE}" ../../../
          cd ..

      - name: Store
        if: ${{ !contains(github.event.pull_request.labels.*.name, 'external') || contains(github.event.pull_request.labels.*.name, 'CI-trusted-author') }}
        uses: actions/upload-artifact@v4
        with:
          name: docs
          path: |
            ncs/nrf/*.zip
            ncs/nrf/monitor*.txt
            ncs/nrf/pr.txt