cmake_minimum_required(VERSION 3.20)
project(daw_vst_bridge LANGUAGES C CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# ── 1. VST3 SDK (Steinberg, vendored as git submodule — NOT in vcpkg) ──
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/CMakeLists.txt")
  add_subdirectory(vst3sdk EXCLUDE_FROM_ALL)
  set(VST3_SDK_TARGET sdk)
else()
  message(WARNING "vst3sdk submodule missing — VST3 host disabled; SF2/SF3/SFZ still build")
  set(VST3_SDK_TARGET "")
endif()

# ── 2. FluidSynth + sfizz ──
# Windows: vcpkg toolchain (-DCMAKE_TOOLCHAIN_FILE=.../vcpkg.cmake) cung cap
# headers/libs; pkg_check_modules khong co san tren MSVC.
# Linux/macOS: pkg-config duoc dung (spec goc).
if(WIN32)
  find_path(FLUIDSYNTH_INCLUDE_DIR fluidsynth.h)
  find_library(FLUIDSYNTH_LIBRARY NAMES fluidsynth libfluidsynth libfluidsynth-3)
  if(NOT FLUIDSYNTH_INCLUDE_DIR OR NOT FLUIDSYNTH_LIBRARY)
    message(FATAL_ERROR "fluidsynth not found — cai qua vcpkg: vcpkg install fluidsynth")
  endif()
  # sfizz: built from source (native_bridge/sfizz-src, see build/_sfizz.bat) —
  # the sfizz port is NOT in vcpkg upstream. Fall back to vcpkg if present.
  set(SFIZZ_SRC_BUILD "${CMAKE_CURRENT_SOURCE_DIR}/sfizz-src/build/library/lib/Release")
  if(EXISTS "${SFIZZ_SRC_BUILD}/sfizz_static.lib")
    file(GLOB SFIZZ_SRC_LIBS "${SFIZZ_SRC_BUILD}/*.lib")
    set(SFIZZ_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/sfizz-src/src")
    set(SFIZZ_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/sfizz-src/src")
    set(SFIZZ_LIBRARY ${SFIZZ_SRC_LIBS})
  else()
    find_path(SFIZZ_INCLUDE_DIR sfizz.hpp)
    find_library(SFIZZ_LIBRARY NAMES sfizz)
    if(NOT SFIZZ_INCLUDE_DIR OR NOT SFIZZ_LIBRARY)
      message(FATAL_ERROR "sfizz not found — build native_bridge/sfizz-src first")
    endif()
  endif()
else()
  find_package(PkgConfig REQUIRED)
  pkg_check_modules(FLUIDSYNTH REQUIRED fluidsynth)
  pkg_check_modules(SFIZZ REQUIRED sfizz)
endif()

include_directories(
  ${CMAKE_CURRENT_SOURCE_DIR}/include
  ${FLUIDSYNTH_INCLUDE_DIR}
  ${SFIZZ_INCLUDE_DIR}
)

add_executable(daw_vst_bridge
  src/main.cpp
  src/NativeInstrumentEngine.cpp
  src/SharedMemoryIPC.cpp
  src/Vst3Instrument.cpp
)

# VST3 SDK hosting: sdk_hosting lacks the platform module loader — module_win32.cpp
# is added to the bridge itself (same approach as the audiohost sample).
if(VST3_SDK_TARGET)
  target_compile_definitions(daw_vst_bridge PRIVATE HAVE_VST3SDK=1)
  target_link_libraries(daw_vst_bridge PRIVATE ${VST3_SDK_TARGET} sdk_hosting)
  if(WIN32)
    target_sources(daw_vst_bridge PRIVATE
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
    )
  endif()
endif()
if(WIN32)
  target_link_libraries(daw_vst_bridge PRIVATE ${FLUIDSYNTH_LIBRARY} ${SFIZZ_LIBRARY})
  # Required Windows libs
  target_link_libraries(daw_vst_bridge PRIVATE winmm)
else()
  target_link_libraries(daw_vst_bridge PRIVATE ${FLUIDSYNTH_LIBRARIES} ${SFIZZ_LIBRARIES})
endif()

# ── gui_probe: standalone VST3 GUI attach probe (debug tool, not shipped) ──
add_executable(gui_probe
  src/gui_probe.cpp
  src/NativeInstrumentEngine.cpp
  src/SharedMemoryIPC.cpp
  src/Vst3Instrument.cpp
)
if(VST3_SDK_TARGET)
  target_compile_definitions(gui_probe PRIVATE HAVE_VST3SDK=1)
  target_link_libraries(gui_probe PRIVATE ${VST3_SDK_TARGET} sdk_hosting)
  if(WIN32)
    target_sources(gui_probe PRIVATE
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
    )
  endif()
endif()
if(WIN32)
  target_link_libraries(gui_probe PRIVATE ${FLUIDSYNTH_LIBRARY} ${SFIZZ_LIBRARY} winmm)
endif()