name: ESP32
on:
  push:
    branches: [master]
    paths:
      - '.github/workflows/esp32.yml'
      - 'CMakeLists.txt'
      - 'cmake/**'
      - 'src/*'
      - 'src/layer/*'
  pull_request:
    branches: [master]
    paths:
      - '.github/workflows/esp32.yml'
      - 'CMakeLists.txt'
      - 'cmake/**'
      - 'src/*'
      - 'src/layer/*'

concurrency:
  group: esp32-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  build:
    name: ESP32
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
        with:
          submodules: true

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.8'

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y cmake ninja-build ccache
            
      - name: Checkout ESP-IDF
        uses: actions/checkout@v4
        with:
          repository: espressif/esp-idf
          path: esp-idf-install
          ref: release/v5.3
          
      - name: Install ESP-IDF
        run: |
          cd esp-idf-install
          git submodule update --init --recursive
          ./install.sh

      - name: Set environment and build NCNN for ESP32
        run: |
          source esp-idf-install/export.sh
          echo "IDF_PATH=$IDF_PATH" >> $GITHUB_ENV
          echo "${IDF_PATH}/tools" >> $GITHUB_PATH
          echo "${IDF_PATH}/components" >> $GITHUB_PATH
          mkdir -p build-esp32 && cd build-esp32
          cmake -DCMAKE_TOOLCHAIN_FILE="../toolchains/esp32.toolchain.cmake" -DCMAKE_BUILD_TYPE=Release -DNCNN_BUILD_EXAMPLES=OFF ..
          make -j 4
          make install