cmake_minimum_required(VERSION 3.26)
project(mio LANGUAGES CXX)

# Set C++20 as the minimum required standard
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Enable CTest support if BUILD_TESTING is enabled
include(CTest)
if(BUILD_TESTING)
  enable_testing()
endif()

# Create an interface library "mio" to provide the include directory.
# It is assumed that the headers are located in "single_include/mio".
add_library(mio INTERFACE)
target_include_directories(mio INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/single_include)

# Add a basic test executable that is built on all platforms.
# Note that the test source file is assumed to be located at "test/test.cpp".
add_executable(mio.test ${CMAKE_CURRENT_SOURCE_DIR}/test/test.cpp)
target_link_libraries(mio.test PRIVATE mio)
if(BUILD_TESTING)
  add_test(NAME mio.test COMMAND mio.test)
endif()

# Windows-specific targets (only built on Windows)
if(WIN32)
  # Unicode version: add the UNICODE compile definition.
  add_executable(mio.unicode.test ${CMAKE_CURRENT_SOURCE_DIR}/test/test.cpp)
  target_link_libraries(mio.unicode.test PRIVATE mio)
  target_compile_definitions(mio.unicode.test PRIVATE UNICODE)
  if(BUILD_TESTING)
    add_test(NAME mio.unicode.test COMMAND mio.unicode.test)
  endif()

  # Full WinAPI version (adjust additional settings as needed).
  add_executable(mio.fullwinapi.test ${CMAKE_CURRENT_SOURCE_DIR}/test/test.cpp)
  target_link_libraries(mio.fullwinapi.test PRIVATE mio)
  if(BUILD_TESTING)
    add_test(NAME mio.fullwinapi.test COMMAND mio.fullwinapi.test)
  endif()

  # Minimal WinAPI version: minimal Windows API configuration.
  add_executable(mio.minwinapi.test ${CMAKE_CURRENT_SOURCE_DIR}/test/test.cpp)
  target_link_libraries(mio.minwinapi.test PRIVATE mio)
  if(BUILD_TESTING)
    add_test(NAME mio.minwinapi.test COMMAND mio.minwinapi.test)
  endif()
endif()

  #
  # Rudimentary CPack support.
  #
  # CPack provides a mechanism to generate installation packaging for a project,
  # e.g., self-extracting shell scripts, compressed tarballs, Debian Package files,
  # RPM Package Manager files, Windows NSIS installation wizards,
  # Apple Disk Images (.dmg), etc.
  #
  # A packaged installation can be generated by calling
  #
  # ```sh
  # cpack -G <packaging type> --config CPackConfig.cmake
  # ```
  #
  # See `cpack --help` or the CPack documentation for more information.
  #
if(NOT subproject)
 set(CPACK_PACKAGE_VENDOR "mandreyel")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY
    "Cross-platform C++20 header-only library for memory mapped file IO")
 set(CMAKE_PROJECT_HOMEPAGE_URL "https://github.com/Twilight-Dream-Of-Magic/mio")
 set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
 set(CPACK_PACKAGE_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}")
 set(CPACK_PACKAGE_VERSION_MINOR "${PROJECT_VERSION_MINOR}")
 set(CPACK_PACKAGE_VERSION_PATCH "${PROJECT_VERSION_PATCH}")
 include(CPack)
endif()