#[=======================================================================[.rst:
FindFX
------------

Find the FX library and header directories

Imported Targets
^^^^^^^^^^^^^^^^

This module defines the following :prop_tgt:`IMPORTED` target:

``FX::FX``
The FX library, if found

Result Variables
^^^^^^^^^^^^^^^^

This module will set the following variables in your project:

``FX_FOUND``
true if the FX C headers and libraries were found
``FX_INCLUDE_DIR``
directories containing the FX C headers.

``FX_LIBRARY``
the C library to link against

Hints
^^^^^

The user may set the environment variable ``FX_PREFIX`` to the root
directory of a FX library installation.
#]=======================================================================]

set (FX_SEARCH_PATHS
	~/Library/Frameworks
	/Library/Frameworks
	/usr/local
	/usr/local/share
	/usr
	/sw # Fink
	/opt/local # DarwinPorts
	/opt/csw # Blastwave
	/opt
	${FX_PREFIX}
	$ENV{FX_PREFIX})

if (FX_STATIC)
	set(_lib_suffix "-s")
endif ()

set(supported_components Core Ds Term Cmd Io Serial Compress)
set(components ${FX_FIND_COMPONENTS})
string(REPLACE ";" ", " supported_components_string_list "${supported_components}")

if (NOT components)
	set(components ${supported_components})
endif ()

set(required_vars)

foreach (component ${components})
	if (NOT "${component}" IN_LIST supported_components)
		message(FATAL_ERROR "'${component}' is not a valid FX module.\nSupported modules: ${supported_components_string_list}")
	endif ()

	string(TOLOWER ${component} header_name)
	set(lib_name ${header_name}${_lib_suffix})

	if (NOT FX_${component}_INCLUDE_DIR)
		find_path(FX_${component}_INCLUDE_DIR
			NAMES fx/${header_name}.h ${FX_FIND_ARGS}
			PATH_SUFFIXES include
			PATHS ${FX_SEARCH_PATHS})
	endif ()

	if (NOT FX_${component}_LIBRARY)
		find_library(FX_${component}_LIBRARY
			NAMES fx-${lib_name} ${FX_FIND_ARGS}
			PATH_SUFFIXES lib
			PATHS ${FX_SEARCH_PATHS})
	else ()
		# on Windows, ensure paths are in canonical format (forward slahes):
		file(TO_CMAKE_PATH "${FX_${component}_LIBRARY}" FX_${component}_LIBRARY)
	endif()

	list(APPEND required_vars FX_${component}_INCLUDE_DIR FX_${component}_LIBRARY)
endforeach (component)

unset(FX_FIND_ARGS)

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(FX
	REQUIRED_VARS ${required_vars})

if (FX_FOUND)
	set(created_targets)
	foreach (component ${components})
		string(TOLOWER ${component} header_name)
		set(lib_name ${header_name}${_lib_suffix})

		if(NOT TARGET FX::${component})
			add_library(FX::${component} UNKNOWN IMPORTED)
			set_target_properties(FX::${component} PROPERTIES
				INTERFACE_INCLUDE_DIRECTORIES "${FX_${component}_INCLUDE_DIR}")
			target_compile_definitions(FX::${component} INTERFACE _CRT_SECURE_NO_WARNINGS=1)

			if (FX_STATIC)
				target_compile_definitions(FX::${component} INTERFACE FX_STATIC=1)
			endif ()

			set_target_properties(FX::${component} PROPERTIES
				IMPORTED_LINK_INTERFACE_LANGUAGES "C"
				IMPORTED_LOCATION "${FX_${component}_LIBRARY}")
			set(created_targets ${created_targets} ${component})
		endif ()
	endforeach (component)

	foreach (component ${created_targets})
		if ("${component}" STREQUAL "Ds")
			if (NOT TARGET FX::Core)
				message(FATAL_ERROR "FX: Module 'Ds' depends on 'Core', which was not specified in find_package()")
			endif ()

			target_link_libraries(FX::Ds INTERFACE FX::Core)
		endif ()

		if ("${component}" STREQUAL "Term")
			if (NOT TARGET FX::Core)
				message(FATAL_ERROR "FX: Module 'Term' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET FX::Ds)
				message(FATAL_ERROR "FX: Module 'Term' depends on 'Ds', which was not specified in find_package()")
			endif ()

			target_link_libraries(FX::Term INTERFACE FX::Core FX::Ds)
		endif ()

		if ("${component}" STREQUAL "Serial")
			if (NOT TARGET FX::Core)
				message(FATAL_ERROR "FX: Module 'Serial' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET FX::Ds)
				message(FATAL_ERROR "FX: Module 'Serial' depends on 'Ds', which was not specified in find_package()")
			endif ()

			target_link_libraries(FX::Serial INTERFACE FX::Core FX::Ds)
		endif ()

		if ("${component}" STREQUAL "Cmd")
			if (NOT TARGET FX::Core)
				message(FATAL_ERROR "FX: Module 'Cmd' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET FX::Ds)
				message(FATAL_ERROR "FX: Module 'Cmd' depends on 'Ds', which was not specified in find_package()")
			endif ()

			if (NOT TARGET FX::Term)
				message(FATAL_ERROR "FX: Module 'Cmd' depends on 'Term', which was not specified in find_package()")
			endif ()

			target_link_libraries(FX::Cmd INTERFACE FX::Core FX::Ds FX::Term)
		endif ()

		if ("${component}" STREQUAL "Io")
			if (NOT TARGET FX::Core)
				message(FATAL_ERROR "FX: Module 'Io' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET FX::Ds)
				message(FATAL_ERROR "FX: Module 'Io' depends on 'Ds', which was not specified in find_package()")
			endif ()

			target_link_libraries(FX::Io INTERFACE FX::Core FX::Ds)
		endif ()

		if ("${component}" STREQUAL "Compress")
			if (NOT TARGET FX::Core)
				message(FATAL_ERROR "FX: Module 'Compress' depends on 'Core', which was not specified in find_package()")
			endif ()

			target_link_libraries(FX::Compress INTERFACE FX::Core FX::Ds)
		endif ()
	endforeach (component)
endif()