name: Build Firmware

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]
  release:
    types: [ created ]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Setup Arduino CLI
      uses: arduino/setup-arduino-cli@v1

    - name: Install ESP8266 platform
      run: |
        arduino-cli core update-index
        arduino-cli core install esp8266:esp8266

    - name: Install libraries
      run: |
        arduino-cli lib install "Adafruit GFX Library"
        arduino-cli lib install "Adafruit SSD1306"
        arduino-cli lib install "NTPClient"
        arduino-cli lib install "WiFiManager"
        arduino-cli lib install "AsyncHTTPRequest_Generic"
        arduino-cli lib install "ESPAsyncTCP"

    - name: Compile firmware
      run: |
        arduino-cli compile --fqbn esp8266:esp8266:generic \
          --build-property "build.flash_size=1M64" \
          --build-property "build.flash_mode=dio" \
          --output-dir build \
          src/clock_ntp_ota_v1.9.ino

    - name: Check firmware size
      run: |
        SIZE=$(stat -c%s "build/clock_ntp_ota_v1.9.ino.bin")
        echo "Firmware size: $SIZE bytes"
        MAX_SIZE=470000  # 470KB max for OTA
        if [ $SIZE -gt $MAX_SIZE ]; then
          echo "ERROR: Firmware too large ($SIZE > $MAX_SIZE)"
          exit 1
        fi

    - name: Upload build artifacts
      uses: actions/upload-artifact@v3
      with:
        name: firmware
        path: |
          build/clock_ntp_ota_v1.9.ino.bin
          build/clock_ntp_ota_v1.9.ino.elf
          build/clock_ntp_ota_v1.9.ino.map
        retention-days: 30

    - name: Upload release assets
      if: github.event_name == 'release'
      uses: actions/upload-release-asset@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        upload_url: ${{ github.event.release.upload_url }}
        asset_path: build/clock_ntp_ota_v1.9.ino.bin
        asset_name: esp8266-weather-clock-${{ github.event.release.tag_name }}.bin
        asset_content_type: application/octet-stream