cmake_minimum_required(VERSION 3.20)
project(secsgem LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Release)
endif()

add_compile_options(-Wall -Wextra -Wpedantic)

find_package(Threads REQUIRED)

# --- Asio (standalone, header-only; from libasio-dev) ---------------------
find_path(ASIO_INCLUDE_DIR asio.hpp)
if(NOT ASIO_INCLUDE_DIR)
  message(FATAL_ERROR "asio.hpp not found. Install libasio-dev.")
endif()

add_library(asio INTERFACE)
target_include_directories(asio INTERFACE ${ASIO_INCLUDE_DIR})
target_compile_definitions(asio INTERFACE ASIO_STANDALONE ASIO_NO_DEPRECATED)
target_link_libraries(asio INTERFACE Threads::Threads)

# --- Core library ---------------------------------------------------------
add_library(secsgem
  src/secs2/item.cpp
  src/secs2/codec.cpp
  src/secs2/message.cpp
  src/hsms/header.cpp
  src/hsms/frame.cpp
  src/hsms/connection.cpp
  src/gem/control_state.cpp
  src/gem/data_model.cpp
  src/endpoint.cpp
)
target_include_directories(secsgem PUBLIC include)
target_link_libraries(secsgem PUBLIC asio)

# --- Demo executables -----------------------------------------------------
add_executable(secs_server apps/secs_server.cpp)
target_link_libraries(secs_server PRIVATE secsgem)

add_executable(secs_client apps/secs_client.cpp)
target_link_libraries(secs_client PRIVATE secsgem)

# --- Tests ----------------------------------------------------------------
enable_testing()
include(FetchContent)
FetchContent_Declare(
  doctest
  GIT_REPOSITORY https://github.com/doctest/doctest.git
  GIT_TAG        v2.4.11
)
FetchContent_MakeAvailable(doctest)

add_executable(secsgem_tests
  tests/test_main.cpp
  tests/test_secs2.cpp
  tests/test_hsms.cpp
  tests/test_control_state.cpp
  tests/test_data_model.cpp
  tests/test_messages.cpp
)
target_link_libraries(secsgem_tests PRIVATE secsgem doctest::doctest)
add_test(NAME secsgem_tests COMMAND secsgem_tests)