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-24.04
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
      cancel-in-progress: true
    steps:
      - name: Remove not needed libs
        run: |
          sudo rm -rf /usr/local/lib/android
      - name: checkout
        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0
          path: ncs/nrf

      - name: Rebase
        if: github.event_name == 'pull_request'
        continue-on-error: true
        env:
          BASE_REF: ${{ github.base_ref }}
          PR_HEAD: ${{ github.event.pull_request.head.sha }}
        working-directory: ncs/nrf
        run: |
          git config --global user.email "actions@zephyrproject.org"
          git config --global user.name "Github Actions"
          rm -fr ".git/rebase-apply"
          rm -fr ".git/rebase-merge"
          git rebase origin/${BASE_REF}
          git clean -f -d
          git log --graph --oneline HEAD...${PR_HEAD}

      - name: Install packages
        working-directory: ncs
        run: |
          sudo apt update
          sudo apt-get install -y wget python3-pip git ninja-build graphviz lcov mscgen plantuml
          sudo snap install yq
          DOXYGEN_VERSION=$(yq ".doxygen.version" nrf/scripts/tools-versions-linux.yml)
          wget --no-verbose "https://github.com/doxygen/doxygen/releases/download/Release_${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: Set up Python
        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
        with:
          python-version: 3.12
          cache: pip
          cache-dependency-path: ncs/nrf/doc/requirements.txt

      - name: Setup Zephyr project
        uses: zephyrproject-rtos/action-zephyr-setup@6a744370a22e4ecb24f5dda3c7e80ff3e0a3b847 # v1.0.8
        with:
          base-path: ncs
          app-path: nrf
          toolchains: 'all'

      - name: install-pip
        working-directory: ncs
        run: |
          pip 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: |
          if [[ "${{ github.event_name }}" == "push" ]]; then
            BUILD_CONF="-DDTS_BINDINGS=ON -DHW_FEATURES=ON"
          fi

          cmake -GNinja -Bdoc/_build -Sdoc -DSPHINXOPTS_EXTRA="-q" ${BUILD_CONF}
          ninja -C doc/_build

      - name: Check version
        run: |
          VERSION_REGEX="^v([0-9a-zA-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: Find nRF Connect SDK Edited Documents
        working-directory: ncs/nrf
        run: |
          COMMENT="comment.txt"
          PREFIX="https://ncsbmdoc.z6.web.core.windows.net/ncs/PR-${{ github.event.pull_request.number }}/"
          CHANGED=$(git diff --name-only --diff-filter=d "${{ github.event.pull_request.base.sha }}..HEAD")

          echo "You can find the documentation preview for this PR [here](${PREFIX})." >> $COMMENT

          NRF=$(echo "$CHANGED" | \
                grep -e "doc/nrf/" | \
                grep -e ".rst" | \
                sed -e "s#^doc/nrf\(.*\)\.rst#${PREFIX}nrf\1.html#g")

          NRF_EXT=$(echo "$CHANGED" | \
                    grep -e "applications/" -e "samples/" -e "scripts/" -e "tests/" | \
                    grep -e ".rst" | \
                    sed -e "s#^\(applications\|samples\|scripts\|tests\)\(.*\)\.rst#${PREFIX}nrf\/\1\2.html#g")

          NRF_ALL=$(printf "$NRF\n$NRF_EXT")

          if [ ! -z "$NRF_ALL" ]; then
            printf "\nPreview links for modified nRF Connect SDK documents:\n\n$NRF_ALL" >> $COMMENT
          fi

      - 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@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4
        with:
          name: docs
          path: |
            ncs/nrf/*.zip
            ncs/nrf/monitor*.txt
            ncs/nrf/pr.txt
            ncs/nrf/comment.txt