name: Build binaries

on:
  push:
    branches:
      - "**"

  pull_request:
    types:
      - opened
      - reopened
      - synchronize

  workflow_dispatch:

permissions:
  contents: read

env:
  CONFIG_WIN: RelWithDebInfo
  CONFIG_LINUX: Release


jobs:

  # ============================================================
  # Windows / MSVC
  # ============================================================

  windows:
    name: Windows x64 / MSVC
    runs-on: windows-2022

    steps:
      - name: Checkout repository
        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
        with:
          fetch-depth: 0
          submodules: recursive

      - name: Setup Python 3.14
        id: python
        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
        with:
          python-version: "3.14"
          architecture: "x64"

      - name: Show environment
        shell: pwsh
        run: |
          python --version
          cmake --version

          Write-Host "Python:"
          Get-Command python

          Write-Host "MSVC:"
          & "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe" `
            -latest `
            -products * `
            -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 `
            -property installationPath

      # README: bootstrap vcpkg + install DirectX DXC
      - name: Prepare Windows dependencies
        shell: cmd
        run: |
          call setup.bat

      - name: Configure
        shell: pwsh
        run: |
          $pythonExe = "${{ steps.python.outputs.python-path }}"
          $pythonRoot = Split-Path $pythonExe

          Write-Host "Python root: $pythonRoot"

          cmake -S . -B build `
            -G "Visual Studio 17 2022" `
            -A x64 `
            "-DPython3_ROOT_DIR=$pythonRoot"

      - name: Build
        shell: pwsh
        run: |
          cmake --build build `
            --config $env:CONFIG_WIN `
            --parallel

      - name: Copy shaders and translations
        shell: pwsh
        run: |
          $output = "build/bin/$env:CONFIG_WIN"

          New-Item `
            -ItemType Directory `
            -Force `
            -Path "$output/shaders" | Out-Null

          Copy-Item `
            -Path "shaders/*" `
            -Destination "$output/shaders" `
            -Recurse `
            -Force

          New-Item `
            -ItemType Directory `
            -Force `
            -Path "$output/lang" | Out-Null

          Copy-Item `
            -Path "lang/*" `
            -Destination "$output/lang" `
            -Recurse `
            -Force

      - name: Upload Windows build
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: maszyna-windows-x64-${{ env.CONFIG_WIN }}
          path: |
            build/bin/${{ env.CONFIG_WIN }}/
          if-no-files-found: error
          retention-days: 14

      - name: Upload Windows debug symbols
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: maszyna-windows-x64-symbols-${{ env.CONFIG_WIN }}
          path: |
            build/pdb/${{ env.CONFIG_WIN }}/*.pdb
            build/bin/${{ env.CONFIG_WIN }}/*.map
          if-no-files-found: warn
          retention-days: 14


  # ============================================================
  # Linux / GCC
  # ============================================================

  linux:
    name: Linux x64 / GCC
    runs-on: ubuntu-24.04

    steps:
      - name: Checkout repository
        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
        with:
          fetch-depth: 0
          submodules: recursive

      - name: Setup Python 3.14
        id: python
        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
        with:
          python-version: "3.14"

      - name: Install Linux dependencies
        run: |
          sudo apt-get update

          sudo apt-get install -y \
            build-essential \
            libgl1-mesa-dev \
            libglew-dev \
            libglfw3-dev \
            libpng-dev \
            libopenal-dev \
            libluajit-5.1-dev \
            libserialport-dev \
            libsndfile1-dev \
            xorg-dev \
            libxkbcommon-dev \
            libwayland-dev \
            wayland-protocols

      #
      # Existing MaSzyna CI already builds OpenAL Soft 1.24.2,
      # so retain that instead of relying only on Ubuntu's package.
      #
      - name: Build OpenAL Soft
        run: |
          git clone \
            --depth 1 \
            --branch 1.24.2 \
            https://github.com/kcat/openal-soft.git \
            /tmp/openal-soft

          cmake \
            -S /tmp/openal-soft \
            -B /tmp/openal-soft/build \
            -DCMAKE_BUILD_TYPE=Release \
            -DALSOFT_EXAMPLES=OFF \
            -DALSOFT_UTILS=OFF

          cmake \
            --build /tmp/openal-soft/build \
            --parallel "$(nproc)"

          sudo cmake \
            --install /tmp/openal-soft/build

          sudo ldconfig

      - name: Show environment
        run: |
          gcc --version
          g++ --version
          cmake --version
          python --version

      - name: Configure
        run: |
          cmake \
            -S . \
            -B build \
            -DCMAKE_BUILD_TYPE="${CONFIG_LINUX}" \
            -DWITH_BETTER_RENDERER=OFF \
            -DWITH_ZMQ=OFF \
            -DWITH_OPENVR=OFF \
            -DUSE_LTO=OFF \
            -DPython3_EXECUTABLE="${{ steps.python.outputs.python-path }}" \
            -DCMAKE_CXX_FLAGS="-Wno-attributes -fno-inline-functions-called-once"

      - name: Build
        run: |
          cmake \
            --build build \
            --parallel "$(nproc)"
            
      - name: Prepare Linux Python environment
        run: |
          PYTHON_ROOT="$(python -c 'import sys; print(sys.base_prefix)')"
          PYTHON_VERSION="$(python -c 'import sys; print(f"{sys.version_info.major}.{sys.version_info.minor}")')"
          PYTHON_HOME="$GITHUB_WORKSPACE/build/bin/linuxpython64"

          echo "Python root: $PYTHON_ROOT"
          echo "Python version: $PYTHON_VERSION"
          echo "Embedded Python home: $PYTHON_HOME"

          python -m venv --copies "$PYTHON_HOME"

          cp -a \
            "$PYTHON_ROOT/lib/python${PYTHON_VERSION}/." \
            "$PYTHON_HOME/lib/python${PYTHON_VERSION}/"

          "$PYTHON_HOME/bin/python" -m pip install --upgrade pip
          "$PYTHON_HOME/bin/python" -m pip install --no-cache-dir Pillow

          "$PYTHON_HOME/bin/python" -c "from PIL import Image; print('Pillow:', Image.__version__)"
          
      - name: Copy shaders and translations
        run: |
          mkdir -p build/bin/shaders build/bin/lang
          cp -R shaders/. build/bin/shaders/
          cp -R lang/. build/bin/lang/

      - name: Upload Linux build
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: maszyna-linux-x64-${{ env.CONFIG_LINUX }}
          path: |
            build/bin/
          if-no-files-found: error
          retention-days: 14


  # ============================================================
  # Public download: release assets need no GitHub account
  # ============================================================

  publish:
    name: Publish public download
    needs: [windows, linux]
    if: github.event_name != 'pull_request'
    runs-on: ubuntu-24.04
    permissions:
      contents: write
    concurrency:
      group: publish-${{ github.ref }}
      cancel-in-progress: false

    steps:
      - name: Download Windows build
        uses: actions/download-artifact@v4
        with:
          name: maszyna-windows-x64-${{ env.CONFIG_WIN }}
          path: dist/maszyna-windows-x64

      - name: Download Linux build
        uses: actions/download-artifact@v4
        with:
          name: maszyna-linux-x64-${{ env.CONFIG_LINUX }}
          path: dist/maszyna-linux-x64

      - name: Pack
        run: |
          cd dist

          find maszyna-linux-x64 -type f -exec sh -c 'file -b "$1" | grep -q "^ELF" && chmod +x "$1"' _ {} \;
          if [ -d maszyna-linux-x64/linuxpython64/bin ]; then
            chmod +x maszyna-linux-x64/linuxpython64/bin/*
          fi

          (cd maszyna-windows-x64 && zip -qr9 ../maszyna-windows-x64.zip .)
          tar -czf maszyna-linux-x64.tar.gz -C maszyna-linux-x64 .
          ls -la

      - name: Publish rolling release of the branch
        env:
          GH_TOKEN: ${{ github.token }}
          GH_REPO: ${{ github.repository }}
          BRANCH: ${{ github.ref_name }}
          SHA: ${{ github.sha }}
          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
        run: |
          slug="$(printf '%s' "$BRANCH" | tr '/ ' '--' | tr -cd '[:alnum:]._-')"
          tag="build-$slug"
          base="${{ github.server_url }}/${{ github.repository }}/releases/download/$tag"

          notes="$(printf '%s\n' \
            "Automatic build of branch \`$BRANCH\`, commit $SHA, replaced by every push to the branch." \
            "" \
            "Download without a GitHub account:" \
            "- Windows: $base/maszyna-windows-x64.zip" \
            "- Linux: $base/maszyna-linux-x64.tar.gz" \
            "" \
            "Unpack over a MaSzyna installation (the game data isn't included). Build log: $RUN_URL")"

          gh release delete "$tag" --yes --cleanup-tag || true
          gh release create "$tag" \
            dist/maszyna-windows-x64.zip \
            dist/maszyna-linux-x64.tar.gz \
            --target "$SHA" \
            --prerelease \
            --latest=false \
            --title "Build: $BRANCH" \
            --notes "$notes"

          echo "### Public download" >> "$GITHUB_STEP_SUMMARY"
          echo "- Windows: $base/maszyna-windows-x64.zip" >> "$GITHUB_STEP_SUMMARY"
          echo "- Linux: $base/maszyna-linux-x64.tar.gz" >> "$GITHUB_STEP_SUMMARY"