python/.github/workflows/update_protobufs.yml

name: "Update protobufs"

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Protobufs version tag to sync to (e.g., v2.7.26). Defaults to the latest protobufs release."
        required: false
        default: ""
        type: string
  repository_dispatch:
    types: [protobufs-release]

permissions:
  contents: write

jobs:
  update-protobufs:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: true
          persist-credentials: false

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Install Poetry
        run: |
          python -m pip install --upgrade pip
          python -m pip install poetry

      - name: Determine target protobufs version
        id: version
        env:
          INPUT_VERSION: ${{ github.event.inputs.version }}
          PAYLOAD_VERSION: ${{ github.event.client_payload.version }}
        run: |
          cd protobufs
          git fetch --tags

          if [ -n "${INPUT_VERSION}" ]; then
            target="${INPUT_VERSION}"
          elif [ -n "${PAYLOAD_VERSION}" ]; then
            target="${PAYLOAD_VERSION}"
          else
            target=$(git tag --list 'v*' --sort=-version:refname | head -n1)
            if [ -z "${target}" ]; then
              echo "Error: no release tags found in meshtastic/protobufs"
              exit 1
            fi
          fi

          if ! git show-ref --verify --quiet "refs/tags/${target}"; then
            echo "Error: '${target}' is not a valid tag in meshtastic/protobufs"
            exit 1
          fi

          printf 'version=%s\n' "${target}" >> "$GITHUB_OUTPUT"
          echo "Target protobufs version: ${target}"

      - name: Update protobuf submodule to release
        env:
          TARGET_VERSION: ${{ steps.version.outputs.version }}
        run: |
          git submodule sync --recursive
          git submodule update --init --recursive
          cd protobufs
          git checkout "${TARGET_VERSION}"
          cd ..

      - name: Download nanopb
        run: |
          curl -L -o nanopb-0.4.8-linux-x86.tar.gz https://jpa.kapsi.fi/nanopb/download/nanopb-0.4.8-linux-x86.tar.gz
          tar xvzf nanopb-0.4.8-linux-x86.tar.gz
          mv nanopb-0.4.8-linux-x86 nanopb-0.4.8

      - name: Install Python dependencies
        run: |
          poetry install --with dev

      - name: Re-generate protocol buffers
        run: |
          ./bin/regen-protobufs.sh

      - name: Commit update
        env:
          TARGET_VERSION: ${{ steps.version.outputs.version }}
        run: |
          git config --global user.name 'github-actions'
          git config --global user.email 'bot@noreply.github.com'
          git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}
          git add protobufs
          git add meshtastic/protobuf
          if [[ -n "$(git status --porcelain)" ]]; then
            git commit -m "protobufs: ${TARGET_VERSION}"
            git push
          else
            echo "No changes to commit"
          fi