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

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
if(MSVC)
  string(REPLACE "/EHsc" "/EHa" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endif()

# ── 1. VST3 SDK (Steinberg, vendored as git submodule — NOT in vcpkg) ──
if(WIN32 AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/CMakeLists.txt")
  add_subdirectory(vst3sdk EXCLUDE_FROM_ALL)
  set(VST3_SDK_TARGET sdk)
else()
  message(STATUS "vst3sdk build skipped (Windows-only) — 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}
  ${CMAKE_CURRENT_SOURCE_DIR}/include
  ${FLUIDSYNTH_INCLUDE_DIR}
  ${SFIZZ_INCLUDE_DIR}
)

if(WIN32)
add_executable(daw_vst_bridge
  src/main.cpp
  src/RenderJob.cpp
  src/RenderFxJob.cpp
  src/FxGuiServer.cpp
  src/NativeInstrumentEngine.cpp
  src/SharedMemoryIPC.cpp
  src/Vst3Instrument.cpp
  src/Vst2Instrument.cpp
  src/StateStore.cpp
        src/SandboxVst3Host.cpp
)
else()
# Linux: offline --render only (SF2/SF3 + SFZ; VST3/VST2 hosting is
# Windows-only). main_linux.cpp is the tiny --render entry.
add_executable(daw_vst_bridge
  src/main_linux.cpp
  src/RenderJob.cpp
  src/NativeInstrumentEngine.cpp
)
endif()

# 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 sdk_common)
  if(WIN32)
    target_sources(daw_vst_bridge PRIVATE
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/common/memorystream.cpp
    )
  endif()
endif()
if(WIN32)
  find_package(JPEG REQUIRED)  # libjpeg-turbo (vcpkg) — FxGuiServer.cpp JPEG encode
  target_link_libraries(daw_vst_bridge PRIVATE ${FLUIDSYNTH_LIBRARY} ${SFIZZ_LIBRARY} JPEG::JPEG)
  # Required Windows libs
  target_link_libraries(daw_vst_bridge PRIVATE winmm imm32)
else()
  target_link_libraries(daw_vst_bridge PRIVATE ${FLUIDSYNTH_LIBRARIES} ${SFIZZ_LIBRARIES})
endif()

# ── fx_vst_bridge: VST FX host (split from daw_vst_bridge). Windows-only:
#    one-shot modes --render-fx / --scan / --open-fx-gui / --fx-gui. No SHM
#    realtime loop (the live master FX chain stays in daw_vst_bridge because
#    it processes the instrument mix in-process). ──
if(WIN32)
add_executable(fx_vst_bridge
  src/main_fx.cpp
  src/RenderFxJob.cpp
  src/FxGuiServer.cpp
)
if(VST3_SDK_TARGET)
  target_compile_definitions(fx_vst_bridge PRIVATE HAVE_VST3SDK=1)
  target_link_libraries(fx_vst_bridge PRIVATE ${VST3_SDK_TARGET} sdk_hosting sdk_common)
  target_sources(fx_vst_bridge PRIVATE
    ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/common/memorystream.cpp
  )
endif()
  find_package(JPEG REQUIRED)  # libjpeg-turbo (vcpkg) — FxGuiServer.cpp JPEG encode
  # FX modes are VST3 + builtin DSP only — no fluidsynth/sfizz (avoids a
  # runtime libfluidsynth-3.dll dependency for the FX bridge).
  target_link_libraries(fx_vst_bridge PRIVATE JPEG::JPEG)
  # Required Windows libs
  target_link_libraries(fx_vst_bridge PRIVATE winmm imm32 ws2_32)
endif()

# ── gui_probe: standalone VST3 GUI attach probe (debug tool, not shipped) ──
if(WIN32)
add_executable(gui_probe
  src/gui_probe.cpp
  src/NativeInstrumentEngine.cpp
  src/SharedMemoryIPC.cpp
  src/Vst3Instrument.cpp
  src/Vst2Instrument.cpp
  src/SandboxVst3Host.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 sdk_common)
  if(WIN32)
    target_sources(gui_probe PRIVATE
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/common/memorystream.cpp
    )
  endif()
endif()
if(WIN32)
  target_link_libraries(gui_probe PRIVATE ${FLUIDSYNTH_LIBRARY} ${SFIZZ_LIBRARY} winmm)
endif()
add_executable(plugin_host
  src/plugin_host_main.cpp
  src/SharedMemoryIPC.cpp
  src/Vst3Instrument.cpp
)
if(VST3_SDK_TARGET)
  target_compile_definitions(plugin_host PRIVATE HAVE_VST3SDK=1)
  target_link_libraries(plugin_host PRIVATE ${VST3_SDK_TARGET} sdk_hosting sdk_common)
  if(WIN32)
    target_sources(plugin_host PRIVATE
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/common/memorystream.cpp
    )
  endif()
endif()
if(WIN32)
  target_link_libraries(plugin_host PRIVATE ${FLUIDSYNTH_LIBRARY} ${SFIZZ_LIBRARY} winmm)
endif()

# G3.3: seh_channel_test — SEH per-channel crash isolation (debug tool, not shipped)
add_executable(seh_channel_test
  tests/seh_channel_test.cpp
  src/Vst3Instrument.cpp
  src/Vst2Instrument.cpp
  src/SandboxVst3Host.cpp
  src/SharedMemoryIPC.cpp
)
if(VST3_SDK_TARGET)
  target_compile_definitions(seh_channel_test PRIVATE HAVE_VST3SDK=1)
  target_link_libraries(seh_channel_test PRIVATE ${VST3_SDK_TARGET} sdk_hosting sdk_common)
  if(WIN32)
    target_sources(seh_channel_test PRIVATE
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/vst/hosting/module_win32.cpp
      ${CMAKE_CURRENT_SOURCE_DIR}/vst3sdk/public.sdk/source/common/memorystream.cpp
    )
  endif()
endif()
if(WIN32)
  target_link_libraries(seh_channel_test PRIVATE ${FLUIDSYNTH_LIBRARY} ${SFIZZ_LIBRARY} winmm)
endif()
endif()  # WIN32-only debug tools (gui_probe, plugin_host, seh_channel_test)