name: GitHub Release

on:
  workflow_call:

jobs:
  create-release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
    - uses: actions/checkout@v4
    
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.x'
    
    - name: Install PlatformIO
      run: |
        python -m pip install --upgrade pip
        pip install --upgrade platformio esptool
    
    - name: Install xxd
      run: |
        sudo apt-get update
        sudo apt-get install xxd
    
    - name: Check for SPIFFS changes
      id: check_spiffs
      run: |
        git fetch --unshallow || true
        CHANGED_FILES=$(git diff --name-only HEAD^..HEAD)
        if echo "$CHANGED_FILES" | grep -q "^data/\|^html/"; then
          echo "SPIFFS_CHANGED=true" >> $GITHUB_OUTPUT
        else
          echo "SPIFFS_CHANGED=false" >> $GITHUB_OUTPUT
        fi
    
    - name: Build Firmware
      run: |
        # Get version from platformio.ini
        VERSION=$(grep '^version = ' platformio.ini | cut -d'"' -f2)
        
        # Always build firmware
        pio run -e esp32dev
        cp .pio/build/esp32dev/firmware.bin .pio/build/esp32dev/filaman_${VERSION}.bin
        
        # Only build SPIFFS if changed
        if [[ "${{ steps.check_spiffs.outputs.SPIFFS_CHANGED }}" == "true" ]]; then
          echo "Building SPIFFS due to changes..."
          pio run -t buildfs
          cp .pio/build/esp32dev/spiffs.bin .pio/build/esp32dev/webpage_${VERSION}.bin
        fi
        
    - name: Prepare binaries
      run: |
        cd .pio/build/esp32dev
        VERSION=$(grep '^version = ' ../../platformio.ini | cut -d'"' -f2)
        
        # Create full binary only if SPIFFS changed
        if [[ "${{ steps.check_spiffs.outputs.SPIFFS_CHANGED }}" == "true" ]]; then
          echo "Creating full binary..."
          esptool.py --chip esp32 merge_bin \
            --fill-flash-size 4MB \
            --flash_mode dio \
            --flash_freq 40m \
            --flash_size 4MB \
            -o filaman_full_${VERSION}.bin \
            0x0000 bootloader.bin \
            0x8000 partitions.bin \
            0x10000 firmware.bin \
            0x390000 spiffs.bin
        fi
        
        # Verify file sizes
        echo "File sizes:"
        ls -lh *.bin
    
    - name: Get version from tag
      id: get_version
      run: |
        echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
      
    - name: Read CHANGELOG.md
      id: changelog
      run: |
        VERSION=${{ steps.get_version.outputs.VERSION }}
        CHANGELOG=$(awk "/## \\[$VERSION\\]/{p=1;print;next} /## \\[/{p=0} p" CHANGELOG.md)
        echo "CHANGES<<EOF" >> $GITHUB_OUTPUT
        echo "$CHANGELOG" >> $GITHUB_OUTPUT
        echo "EOF" >> $GITHUB_OUTPUT

    - name: Create GitHub Release
      env:
        GH_TOKEN: ${{ github.token }}
      run: |
        cd .pio/build/esp32dev
        VERSION=$(grep '^version = ' ../../platformio.ini | cut -d'"' -f2)
        FILES_TO_UPLOAD=""
        
        # Always add firmware
        if [ -f "filaman_${VERSION}.bin" ]; then
          FILES_TO_UPLOAD="$FILES_TO_UPLOAD filaman_${VERSION}.bin"
        fi
        
        # Add SPIFFS and full binary only if they exist
        if [ -f "webpage_${VERSION}.bin" ]; then
          FILES_TO_UPLOAD="$FILES_TO_UPLOAD webpage_${VERSION}.bin"
        fi
        
        if [ -f "filaman_full_${VERSION}.bin" ]; then
          FILES_TO_UPLOAD="$FILES_TO_UPLOAD filaman_full_${VERSION}.bin"
        fi
        
        # Create release with available files
        if [ -n "$FILES_TO_UPLOAD" ]; then
          gh release create "${{ github.ref_name }}" \
            --title "Release ${{ steps.get_version.outputs.VERSION }}" \
            --notes "${{ steps.changelog.outputs.CHANGES }}" \
            $FILES_TO_UPLOAD
        else
          echo "Error: No files found to upload"
          exit 1
        fi