lua_build.yml

name: Build with Homebrew Lua/Luau

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main
  workflow_dispatch:

jobs:
  build:
    runs-on: macos-latest  # Use macOS for iOS compatible builds

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

    - name: Install dependencies
      run: |
        echo "Installing dependencies..."
        # Install essential build tools and Lua/Luau
        brew update
        brew install cmake pkg-config
        brew install luau 
        brew install lua || true
        
        # Show Lua/Luau installation details
        echo "Lua/Luau installation details:"
        brew info luau
        brew info lua || true
        
        echo "Lua/Luau paths:"
        ls -la $(brew --prefix luau)/include || echo "No include directory found"
        ls -la $(brew --prefix luau)/lib || echo "No lib directory found"
        
        # Create required directories
        mkdir -p external/dobby/include
        mkdir -p external/dobby/lib
        mkdir -p output/Resources/AIData
        mkdir -p build
        
        # Remove any CI_BUILD defines
        find source -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.cpp" -o -name "*.mm" -o -name "*.c" \) | \
          xargs sed -i '' 's/#define CI_BUILD//g' 2>/dev/null || true

    - name: Setup Xcode
      uses: maxim-lobanov/setup-xcode@v1
      with:
        xcode-version: latest-stable

    - name: Build Dobby
      id: install-dobby
      run: |
        echo "Building Dobby from source (required dependency)..."
        git clone --depth=1 https://github.com/jmpews/Dobby.git
        cd Dobby
        mkdir -p build && cd build
        
        # Configure and build Dobby
        cmake .. \
          -DCMAKE_BUILD_TYPE=Release \
          -DDOBBY_BUILD_SHARED_LIBRARY=OFF \
          -DDOBBY_BUILD_STATIC_LIBRARY=ON
        
        cmake --build . --config Release
        
        # Copy Dobby files to expected location
        mkdir -p $GITHUB_WORKSPACE/external/dobby/lib
        mkdir -p $GITHUB_WORKSPACE/external/dobby/include
        
        cp libdobby.a $GITHUB_WORKSPACE/external/dobby/lib/
        cp -r ../include/* $GITHUB_WORKSPACE/external/dobby/include/
        
        echo "Dobby successfully built and installed to external/dobby"
        cd $GITHUB_WORKSPACE

    - name: Create Minimal Lua API Patch
      run: |
        echo "Creating minimal patch for Lua API..."
        
        # Create a small header file that just fixes the specific issues
        cat > lua_fixes.h << 'EOF'
// Minimal fixes for Lua/Luau API issues
#pragma once

// Only fix the problematic static function pointer
#ifdef lua_pcall
#undef lua_pcall
#endif
extern int lua_pcall(lua_State* L, int nargs, int nresults, int errfunc);

// Fix typeerror and argerror macros
#define luaL_typeerror(L, narg, tname) luaL_typeerrorL(L, narg, tname)
#define luaL_argerror(L, narg, extramsg) luaL_argerrorL(L, narg, extramsg)
EOF

        # Create a patch for lua.h to fix the static function pointer
        if [ -f "source/cpp/luau/lua.h" ]; then
          echo "Patching source/cpp/luau/lua.h..."
          # Create a backup
          cp source/cpp/luau/lua.h source/cpp/luau/lua.h.bak
          
          # Remove the static function pointer line
          sed -i '' 's/static int (\*lua_pcall)(lua_State\* L, int nargs, int nresults, int errfunc);/int lua_pcall(lua_State* L, int nargs, int nresults, int errfunc);/' source/cpp/luau/lua.h
        fi
        
        # Copy the fixes to the source directory
        cp lua_fixes.h source/

    - name: Update CMakeLists.txt to use Homebrew Lua
      run: |
        echo "Updating CMakeLists.txt to use Homebrew Lua/Luau..."
        
        # Add Lua paths to CMakeLists.txt
        cat >> CMakeLists.txt << EOF
# Find and use Homebrew Lua/Luau
list(APPEND CMAKE_PREFIX_PATH $(brew --prefix luau))
set(LUAU_DIR $(brew --prefix luau))
set(LUA_INCLUDE_DIR \${LUAU_DIR}/include)
set(LUA_LIBRARIES \${LUAU_DIR}/lib/libluau.dylib)

# Include our fix header
include_directories(\${CMAKE_SOURCE_DIR}/source)

# Link against Homebrew Lua
target_link_libraries(roblox_executor PRIVATE \${LUA_LIBRARIES})
EOF

        # Ensure we include the fix header in lfs.c
        if [ -f "source/lfs.c" ]; then
          # Add the include to the top of the file
          sed -i '' '1i\
// Include minimal fixes for Lua API\
#include "lua_fixes.h"\
' source/lfs.c
        fi

    - name: Build Dynamic Library
      run: |
        echo "Building the iOS dynamic library..."
        
        # Create a direct link to Homebrew's luau lib as liblua.dylib (for backward compatibility)
        LUAU_LIB=$(brew --prefix luau)/lib
        if [ -f "$LUAU_LIB/libluau.dylib" ] && [ ! -f "$LUAU_LIB/liblua.dylib" ]; then
          echo "Creating symlink from libluau.dylib to liblua.dylib..."
          ln -sf "$LUAU_LIB/libluau.dylib" "$LUAU_LIB/liblua.dylib" || sudo ln -sf "$LUAU_LIB/libluau.dylib" "$LUAU_LIB/liblua.dylib" || true
        fi
        
        # Configure with Homebrew Lua paths
        echo "Configuring with Lua from: $(brew --prefix luau)"
        cmake -S . -B build \
          -DCMAKE_OSX_ARCHITECTURES="arm64" \
          -DCMAKE_OSX_DEPLOYMENT_TARGET="15.0" \
          -DCMAKE_BUILD_TYPE=Release \
          -DCMAKE_SYSTEM_NAME=iOS \
          -DCMAKE_PREFIX_PATH="$(brew --prefix luau)" \
          -DLUA_INCLUDE_DIR="$(brew --prefix luau)/include" \
          -DLUA_LIBRARIES="$(brew --prefix luau)/lib/libluau.dylib" \
          -DENABLE_AI_FEATURES=ON \
          -DUSE_DOBBY=ON
        
        # Print the CMake configuration
        cat build/CMakeCache.txt | grep -E "LUA|Lua|luau|DOBBY"
        
        # Build the library
        cmake --build build --config Release || {
          echo "🔎 Build failed, analyzing errors..."
          
          # Show the problematic part of lua.h
          echo "lua.h line with lua_pcall:"
          grep -n "lua_pcall" source/cpp/luau/lua.h || echo "Not found"
          
          # Check if the lua_fixes.h was properly included in lfs.c
          echo "First 10 lines of lfs.c:"
          head -10 source/lfs.c
          
          # Show build errors
          if [ -f "build/CMakeFiles/CMakeError.log" ]; then
            echo "=== CMakeError.log ==="
            cat build/CMakeFiles/CMakeError.log
          fi
          
          # Check for specific error logs
          echo "Searching for error logs..."
          find build -name "*.log" -type f -exec grep -l "error:" {} \; | xargs cat 2>/dev/null || echo "No error logs found"
          
          exit 1
        }
        
        # Check if build produced the library
        if [ -f "build/lib/libmylibrary.dylib" ]; then
          echo "✅ Successfully built libmylibrary.dylib"
          ls -la build/lib/libmylibrary.dylib
          
          # Copy to output directory
          mkdir -p output
          cp build/lib/libmylibrary.dylib output/
          
          # Copy any resources
          if [ -d "Resources" ]; then
            mkdir -p output/Resources
            cp -r Resources/* output/Resources/ 2>/dev/null || true
          fi
          
          # Create default config if it doesn't exist
          mkdir -p output/Resources/AIData
          if [ ! -f "output/Resources/AIData/config.json" ]; then
            echo '{"version":"1.0.0","led_effects":true,"ai_features":true,"memory_optimization":true}' > output/Resources/AIData/config.json
          fi
          
          echo "== Built files =="
          ls -la output/
        else
          echo "❌ Failed to build libmylibrary.dylib"
          echo "== Build directory contents =="
          find build -name "*.dylib" -o -name "*.a"
          exit 1
        fi

    - name: Verify Library
      run: |
        echo "Verifying built dylib..."
        
        if [ -f "output/libmylibrary.dylib" ]; then
          echo "✅ libmylibrary.dylib exists"
          
          # Check for exported symbols
          echo "Exported symbols:"
          nm -g output/libmylibrary.dylib | grep -E "luaopen_|ExecuteScript" || echo "No key symbols found!"
          
          # Check library type
          file output/libmylibrary.dylib
          
          # Check library dependencies
          otool -L output/libmylibrary.dylib
        else
          echo "❌ libmylibrary.dylib not found in output directory"
          exit 1
        fi

    - name: Upload Artifact
      uses: actions/upload-artifact@v3
      with:
        name: ios-dylib-with-real-lua
        path: |
          output/libmylibrary.dylib
          output/Resources/**