name: Build Linux (System Libs)

on:
  # Build on releases
  release:
    types: [published]
  # Allow manual trigger
  workflow_dispatch:
    inputs:
      build_type:
        description: 'Build type (all, basic, hardsubx)'
        required: false
        default: 'all'
  # Build on pushes to workflow file for testing
  push:
    paths:
      - '.github/workflows/build_linux_systemlibs.yml'
      - 'linux/build'

permissions:
  contents: write

jobs:
  build-systemlibs:
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        build_type: [basic, hardsubx]

    steps:
      - name: Check if should build this variant
        id: should_build
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            INPUT_TYPE="${{ github.event.inputs.build_type }}"
            if [ "$INPUT_TYPE" = "all" ] || [ "$INPUT_TYPE" = "${{ matrix.build_type }}" ]; then
              echo "should_build=true" >> $GITHUB_OUTPUT
            else
              echo "should_build=false" >> $GITHUB_OUTPUT
            fi
          else
            echo "should_build=true" >> $GITHUB_OUTPUT
          fi

      - name: Checkout repository
        if: steps.should_build.outputs.should_build == 'true'
        uses: actions/checkout@v6

      - name: Install base dependencies
        if: steps.should_build.outputs.should_build == 'true'
        run: |
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends \
            build-essential \
            pkg-config \
            zlib1g-dev \
            libpng-dev \
            libfreetype-dev \
            libutf8proc-dev \
            libgpac-dev \
            libtesseract-dev \
            libleptonica-dev \
            tesseract-ocr-eng \
            clang \
            libclang-dev

      - name: Install FFmpeg dependencies (HardSubX)
        if: steps.should_build.outputs.should_build == 'true' && matrix.build_type == 'hardsubx'
        run: |
          sudo apt-get install -y --no-install-recommends \
            libavcodec-dev \
            libavformat-dev \
            libavutil-dev \
            libswscale-dev \
            libswresample-dev \
            libavfilter-dev \
            libavdevice-dev \
            libxcb1-dev \
            libxcb-shm0-dev \
            libx11-dev \
            liblzma-dev

      - name: Install Rust toolchain
        if: steps.should_build.outputs.should_build == 'true'
        uses: dtolnay/rust-toolchain@stable

      - name: Build with system libraries
        if: steps.should_build.outputs.should_build == 'true'
        run: |
          cd linux
          if [ "${{ matrix.build_type }}" = "hardsubx" ]; then
            ./build -system-libs -hardsubx
          else
            ./build -system-libs
          fi

      - name: Verify build
        if: steps.should_build.outputs.should_build == 'true'
        run: |
          ./linux/ccextractor --version
          echo "=== Library dependencies ==="
          ldd ./linux/ccextractor | grep -E 'freetype|png|utf8proc|tesseract|leptonica' || true

      - name: Get output name
        if: steps.should_build.outputs.should_build == 'true'
        id: output_name
        run: |
          case "${{ matrix.build_type }}" in
            basic)
              echo "name=ccextractor-linux-systemlibs-x86_64" >> $GITHUB_OUTPUT
              ;;
            hardsubx)
              echo "name=ccextractor-linux-systemlibs-hardsubx-x86_64" >> $GITHUB_OUTPUT
              ;;
          esac

      - name: Package binary
        if: steps.should_build.outputs.should_build == 'true'
        run: |
          mkdir -p package
          cp linux/ccextractor package/
          # Create a simple README for the package
          cat > package/README.txt << 'EOF'
          CCExtractor - System Libraries Build
          =====================================

          This build uses system libraries (dynamic linking).

          Required system packages (Debian/Ubuntu):
            sudo apt install libgpac12 libtesseract5 libleptonica6 \
                             libpng16-16 libfreetype6 libutf8proc3

          For HardSubX builds, also install:
            sudo apt install libavcodec60 libavformat60 libswscale7 libavfilter9

          Run with: ./ccextractor --help
          EOF
          tar -czvf ${{ steps.output_name.outputs.name }}.tar.gz -C package .

      - name: Upload artifact
        if: steps.should_build.outputs.should_build == 'true'
        uses: actions/upload-artifact@v7
        with:
          name: ${{ steps.output_name.outputs.name }}
          path: ${{ steps.output_name.outputs.name }}.tar.gz

      - name: Upload to Release
        if: steps.should_build.outputs.should_build == 'true' && github.event_name == 'release'
        uses: softprops/action-gh-release@v3
        with:
          files: ${{ steps.output_name.outputs.name }}.tar.gz
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}