# app/vpn/CMakeLists_vpn.cmake
#
# Include this file from the top-level moonlight-qt CMakeLists.txt:
#
#   include(app/vpn/CMakeLists_vpn.cmake)
#
# Prerequisites:
#   Run scripts/build-boringtun.sh first to produce deps/boringtun/libboringtun.a

# ─── boringtun static library ─────────────────────────────────────────────────

set(BORINGTUN_LIB "${CMAKE_SOURCE_DIR}/deps/boringtun/libboringtun.a")

if(NOT EXISTS "${BORINGTUN_LIB}")
    message(FATAL_ERROR
        "boringtun static library not found at ${BORINGTUN_LIB}\n"
        "Run:  bash scripts/build-boringtun.sh --universal\n"
        "then re-run CMake.")
endif()

add_library(boringtun STATIC IMPORTED)
set_target_properties(boringtun PROPERTIES
    IMPORTED_LOCATION "${BORINGTUN_LIB}"
)

# ─── VPN source files ──────────────────────────────────────────────────────────

set(VPN_SOURCES
    app/vpn/wireguardconfig.cpp
    app/vpn/relayclient.cpp
)

if(APPLE)
    list(APPEND VPN_SOURCES app/vpn/tunnelmanager_mac.mm)
elseif(WIN32)
    list(APPEND VPN_SOURCES app/vpn/tunnelmanager_win.cpp)   # future
elseif(UNIX)
    list(APPEND VPN_SOURCES app/vpn/tunnelmanager_linux.cpp) # future
endif()

# ─── Integration into moonlight-qt target ────────────────────────────────────
# Replace moonlight-qt below with whatever your top-level CMakeLists calls the app target.

target_sources(moonlight-qt PRIVATE ${VPN_SOURCES})

target_include_directories(moonlight-qt PRIVATE
    "${CMAKE_SOURCE_DIR}/app/vpn"
)

target_link_libraries(moonlight-qt PRIVATE boringtun)

if(APPLE)
    # Frameworks required by boringtun on macOS
    target_link_libraries(moonlight-qt PRIVATE
        "-framework Security"
        "-framework Network"
        "-framework SystemConfiguration"
    )
    # Objective-C++ needed for tunnelmanager_mac.mm
    set_source_files_properties(
        app/vpn/tunnelmanager_mac.mm
        PROPERTIES COMPILE_FLAGS "-fobjc-arc"
    )
endif()