# sdl3 cmake project-config input for ./configure script

include(FeatureSummary)
set_package_properties(SDL3 PROPERTIES
    URL "https://www.libsdl.org/"
    DESCRIPTION "low level access to audio, keyboard, mouse, joystick, and graphics hardware"
)

# Copied from `configure_package_config_file`
macro(set_and_check _var _file)
    set(${_var} "${_file}")
    if(NOT EXISTS "${_file}")
        message(FATAL_ERROR "File or directory ${_file} referenced by variable ${_var} does not exist !")
    endif()
endmacro()

get_filename_component(prefix "${CMAKE_CURRENT_LIST_DIR}/@cmake_prefix_relpath@" ABSOLUTE)

set(exec_prefix "@exec_prefix@")
set(bindir "@bindir@")
set(libdir "@libdir@")
set(includedir "@includedir@")

set_and_check(SDL3_PREFIX         "${prefix}")
set_and_check(SDL3_EXEC_PREFIX    "${exec_prefix}")
set_and_check(SDL3_BINDIR         "${bindir}")
set_and_check(SDL3_INCLUDE_DIR    "${includedir}/SDL3")
set_and_check(SDL3_LIBDIR         "${libdir}")
set(SDL3_INCLUDE_DIRS             "${includedir};${SDL3_INCLUDE_DIR}")

set(SDL3_LIBRARIES SDL3::SDL3)
set(SDL3_STATIC_LIBRARIES SDL3::SDL3-static)
set(SDL3MAIN_LIBRARY)
set(SDL3TEST_LIBRARY SDL3::SDL3test)

unset(prefix)
unset(exec_prefix)
unset(bindir)
unset(libdir)
unset(includedir)

set(_sdl3_libraries_in "@SDL_LIBS@")
set(_sdl3_static_private_libs_in "@SDL_STATIC_LIBS@")

# Convert _sdl3_libraries to list and keep only libraries + library directories
string(REGEX MATCHALL "-[lm]([-a-zA-Z0-9._]+)" _sdl3_libraries "${_sdl3_libraries_in}")
string(REGEX REPLACE "^-l" "" _sdl3_libraries "${_sdl3_libraries}")
string(REGEX REPLACE ";-l" ";" _sdl3_libraries "${_sdl3_libraries}")
string(REGEX MATCHALL "-L([-a-zA-Z0-9._/]+)" _sdl3_libdirs "${_sdl3_libraries_in}")
string(REGEX REPLACE "^-L" "" _sdl3_libdirs "${_sdl3_libdirs}")
string(REGEX REPLACE ";-L" ";" _sdl3_libdirs "${_sdl3_libdirs}")
list(APPEND _sdl3_libdirs "${SDL3_LIBDIR}")

# Convert _sdl3_static_private_libs to list and keep only libraries + library directories
string(REGEX MATCHALL "(-[lm]([-a-zA-Z0-9._]+))|(-Wl,[^ ]*framework[^ ]*)|(-pthread)" _sdl3_static_private_libs "${_sdl3_static_private_libs_in}")
string(REGEX REPLACE "^-l" "" _sdl3_static_private_libs "${_sdl3_static_private_libs}")
string(REGEX REPLACE ";-l" ";" _sdl3_static_private_libs "${_sdl3_static_private_libs}")
string(REGEX MATCHALL "-L([-a-zA-Z0-9._/]+)" _sdl3_static_private_libdirs "${_sdl3_static_private_libs_in}")
string(REGEX REPLACE "^-L" "" _sdl3_static_private_libdirs "${_sdl3_static_private_libdirs}")
string(REGEX REPLACE ";-L" ";" _sdl3_static_private_libdirs "${_sdl3_static_private_libdirs}")

if(_sdl3_libraries MATCHES ".*SDL3main.*")
  list(INSERT SDL3_LIBRARIES 0 SDL3::SDL3main)
  list(INSERT SDL3_STATIC_LIBRARIES 0 SDL3::SDL3main)
endif()

set(_sdl3main_library ${SDL3_LIBDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}SDL3main${CMAKE_STATIC_LIBRARY_SUFFIX})
if(EXISTS "${_sdl3main_library}")
  set(SDL3MAIN_LIBRARY SDL3::SDL3main)
  if(NOT TARGET SDL3::SDL3main)
    add_library(SDL3::SDL3main STATIC IMPORTED)
    set_target_properties(SDL3::SDL3main
      PROPERTIES
        IMPORTED_LOCATION "${_sdl3main_library}"
    )
    if(WIN32)
      # INTERFACE_LINK_OPTIONS needs CMake 3.13
      cmake_minimum_required(VERSION 3.13)
      # Mark WinMain/WinMain@16 as undefined, such that it will be withheld by the linker.
      if(CMAKE_SIZEOF_VOID_P EQUAL 4)
        set_target_properties(SDL3::SDL3main
          PROPERTIES
            INTERFACE_LINK_OPTIONS "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:-Wl,--undefined=_WinMain@16>"
        )
      else()
        set_target_properties(SDL3::SDL3main
          PROPERTIES
            INTERFACE_LINK_OPTIONS "$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:-Wl,--undefined=WinMain>"
        )
      endif()
    endif()
  endif()
  set(SDL3_SDL3main_FOUND TRUE)
else()
  set(SDL3_SDL3main_FOUND FALSE)
endif()
unset(_sdl3main_library)

# Remove SDL3 since this is the "central" library
# Remove SDL3main since this will be provided by SDL3::SDL3main (if available)
# Remove mingw32 and cygwin since these are not needed when using `-Wl,--undefined,WinMain`
set(_sdl3_link_libraries ${_sdl3_libraries})
list(REMOVE_ITEM _sdl3_link_libraries SDL3 SDL3main mingw32 cygwin)

if(WIN32)
  set(_sdl3_implib "${SDL3_LIBDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}SDL3${CMAKE_SHARED_LIBRARY_SUFFIX}${CMAKE_STATIC_LIBRARY_SUFFIX}")
  set(_sdl3_dll "${SDL3_BINDIR}/SDL3${CMAKE_SHARED_LIBRARY_SUFFIX}")
  if(EXISTS "${_sdl3_implib}" AND EXISTS "${_sdl3_dll}")
    if(NOT TARGET SDL3::SDL3)
      add_library(SDL3::SDL3 SHARED IMPORTED)
      set_target_properties(SDL3::SDL3 PROPERTIES
        INTERFACE_INCLUDE_DIRECTORIES "${SDL3_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${_sdl3_link_libraries}"
        INTERFACE_LINK_DIRECTORIES "${_sdl3_libdirs}"
        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
        IMPORTED_IMPLIB "${_sdl3_implib}"
        IMPORTED_LOCATION "${_sdl3_dll}"
      )
    endif()
    set(SDL3_SDL3_FOUND TRUE)
  else()
    set(SDL3_SDL3_FOUND FALSE)
  endif()
  unset(_sdl3_implib)
  unset(_sdl3_dll)
else()
  set(_sdl3_shared "${SDL3_LIBDIR}/${CMAKE_SHARED_LIBRARY_PREFIX}SDL3${CMAKE_SHARED_LIBRARY_SUFFIX}")
  if(EXISTS "${_sdl3_shared}")
    if(NOT TARGET SDL3::SDL3)
      add_library(SDL3::SDL3 SHARED IMPORTED)
      set_target_properties(SDL3::SDL3 PROPERTIES
        INTERFACE_INCLUDE_DIRECTORIES "${SDL3_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${_sdl3_link_libraries}"
        INTERFACE_LINK_DIRECTORIES "${_sdl3_libdirs}"
        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
        IMPORTED_LOCATION "${_sdl3_shared}"
      )
    endif()
    set(SDL3_SDL3_FOUND TRUE)
  else()
    set(SDL3_SDL3_FOUND FALSE)
  endif()
  unset(_sdl3_shared)
endif()

set(_sdl3_static "${SDL3_LIBDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}SDL3${CMAKE_STATIC_LIBRARY_SUFFIX}")
if(EXISTS "${_sdl3_static}")
  if(NOT TARGET SDL3::SDL3-static)
    add_library(SDL3::SDL3-static STATIC IMPORTED)
    set_target_properties(SDL3::SDL3-static
      PROPERTIES
        IMPORTED_LOCATION "${_sdl3_static}"
        INTERFACE_INCLUDE_DIRECTORIES "${SDL3_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${_sdl3_link_libraries};${_sdl3_static_private_libs}"
        INTERFACE_LINK_DIRECTORIES "${_sdl3_libdirs};${_sdl3_static_private_libdirs}"
        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
    )
  endif()
  set(SDL3_SDL3-static_FOUND TRUE)
else()
  set(SDL3_SDL3-static_FOUND FALSE)
endif()
unset(_sdl3_static)

unset(_sdl3_link_libraries)

set(_sdl3test_library "${SDL3_LIBDIR}/${CMAKE_STATIC_LIBRARY_PREFIX}SDL3_test${CMAKE_STATIC_LIBRARY_SUFFIX}")
if(EXISTS "${_sdl3test_library}")
  if(NOT TARGET SDL3::SDL3test)
    add_library(SDL3::SDL3test STATIC IMPORTED)
    set_target_properties(SDL3::SDL3test
      PROPERTIES
        IMPORTED_LOCATION "${_sdl3test_library}"
        INTERFACE_INCLUDE_DIRECTORIES "${SDL3_INCLUDE_DIR}"
        IMPORTED_LINK_INTERFACE_LANGUAGES "C"
    )
  endif()
  set(SDL3_SDL3test_FOUND TRUE)
else()
  set(SDL3_SDL3test_FOUND FALSE)
endif()
unset(_sdl3test_library)

# Copied from `configure_package_config_file`
macro(check_required_components _NAME)
  foreach(comp ${${_NAME}_FIND_COMPONENTS})
    if(NOT ${_NAME}_${comp}_FOUND)
      if(${_NAME}_FIND_REQUIRED_${comp})
        set(${_NAME}_FOUND FALSE)
      endif()
    endif()
  endforeach()
endmacro()

check_required_components(SDL3)

# Create SDL3::SDL3 alias for static-only builds
if(TARGET SDL3::SDL3-static AND NOT TARGET SDL3::SDL3)
  if(CMAKE_VERSION VERSION_LESS "3.18")
    # FIXME: Aliasing local targets is not supported on CMake < 3.18, so make it global.
    add_library(SDL3::SDL3 INTERFACE IMPORTED)
    set_target_properties(SDL3::SDL3 PROPERTIES INTERFACE_LINK_LIBRARIES "SDL3::SDL3-static")
  else()
    add_library(SDL3::SDL3 ALIAS SDL3::SDL3-static)
  endif()
endif()