include(CheckCXXSourceCompiles)
set(LIBPURPLE_LIBRARY_DIRS "")
if (NOT WIN32)
	include(FindPkgConfig)
	pkg_check_modules(LIBPURPLE purple)	
endif ()

if (LIBPURPLE_FOUND)	
	FIND_LIBRARY(LIBPURPLE_LIBRARY
	  NAMES libpurple purple
		PATHS ${LIBPURPLE_LIBRARY_DIRS}
	)
	
else()
	FIND_LIBRARY(LIBPURPLE_LIBRARY_RELEASE
	  NAMES purple libpurple libpurple-static
	)
	if (LIBPURPLE_LIBRARY_RELEASE)
		list(APPEND LIBPURPLE_LIBRARY optimized ${LIBPURPLE_LIBRARY_RELEASE})
	endif()

	FIND_LIBRARY(LIBPURPLE_LIBRARY_DEBUG
	  NAMES purple_d libpurple_d libpurple-static_d
	)
	if (LIBPURPLE_LIBRARY_DEBUG)
		list(APPEND LIBPURPLE_LIBRARY debug ${LIBPURPLE_LIBRARY_DEBUG})
	else()
		if (UNIX)
			list(APPEND LIBPURPLE_LIBRARY debug ${LIBPURPLE_LIBRARY_RELEASE})
		endif()
	endif()
endif()

# message("LIBPURPLE_LIBRARY: ${LIBPURPLE_LIBRARY}")
# message("LIBPURPLE_INCLUDE_DIR: ${LIBPURPLE_INCLUDE_DIR}")

FIND_PATH(LIBPURPLE_INCLUDE_DIR purple.h
  PATH_SUFFIXES include/libpurple src/libpurple
  PATHS
  /usr/local
  /usr
  /sw # Fink
  /opt/local # DarwinPorts
  /opt/csw # Blastwave
  /opt
	${LIBPURPLE_INCLUDE_DIRS}
)

INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBPURPLE DEFAULT_MSG LIBPURPLE_LIBRARY LIBPURPLE_INCLUDE_DIR)

if (LIBPURPLE_FOUND)
	set(LIBPURPLE_VERSION_HPP_CONTENTS "")
		
	file(STRINGS "${LIBPURPLE_INCLUDE_DIR}/version.h" LIBPURPLE_VERSION_HPP_CONTENTS REGEX "#define PURPLE_(.*)_VERSION (.)")

	STRING(REGEX MATCH "PURPLE_MAJOR_VERSION \\\(([0-9]*)\\\)" _LIBPURPLE_VERSION_MAJOR ${LIBPURPLE_VERSION_HPP_CONTENTS})
	STRING(REGEX MATCH "[0-9]+" LIBPURPLE_VERSION_MAJOR ${_LIBPURPLE_VERSION_MAJOR})
	unset(_LIBPURPLE_VERSION_MAJOR)

	STRING(REGEX MATCH "PURPLE_MINOR_VERSION \\\(([0-9]*)\\\)" _LIBPURPLE_VERSION_MINOR ${LIBPURPLE_VERSION_HPP_CONTENTS})
	STRING(REGEX MATCH "[0-9]+" LIBPURPLE_VERSION_MINOR ${_LIBPURPLE_VERSION_MINOR})
	unset(_LIBPURPLE_VERSION_MINOR)

	STRING(REGEX MATCH "PURPLE_MICRO_VERSION \\\(([0-9]*)\\\)" _LIBPURPLE_VERSION_PATCH ${LIBPURPLE_VERSION_HPP_CONTENTS})
	STRING(REGEX MATCH "[0-9]+" LIBPURPLE_VERSION_PATCH ${_LIBPURPLE_VERSION_PATCH})
	unset(_LIBPURPLE_VERSION_PATCH)

	set(LIBPURPLE_VERSION "${LIBPURPLE_VERSION_MAJOR}.${LIBPURPLE_VERSION_MINOR}.${LIBPURPLE_VERSION_PATCH}")
	unset(LIBPURPLE_VERSION_HPP_CONTENTS)
endif()

# we need to check the API of libpurple, but need a couple more libraries - solved via version > 3
# find_package(ICONV)
# find_package(GLIB2)
# find_package(GObject)
# if (LIBPURPLE_FOUND AND GLIB2_FOUND AND ICONV_FOUND AND GOBJECT_FOUND)
# 	set(CMAKE_REQUIRED_INCLUDES ${LIBPURPLE_INCLUDE_DIR} ${GLIB2_INCLUDE_DIRS} ${ICONV_INCLUDE_DIR} ${GOBJECT_INCLUDE_DIR})
# 	set(CMAKE_REQUIRED_LIBRARIES ${LIBPURPLE_LIBRARY} ${GLIB2_LIBRARIES} ${ICONV_LIBRARIES} ${GOBJECT_LIBRARIES})
# 	if (LIBPURPLE_FOUND)
# 	  check_cxx_source_compiles("
# 		extern \"C\" {
# 			#include <purple.h>
# 		}
# 	  int main(){
# 			/* 
# 			 * There was a refactoring to glib datastructures, 
# 			 * The PurpleRequestFeature occured at the same time.
# 			 */
# 			PurpleRequestFeature _features;
# 	  }
# 	" LIBPURPLE_GLIB_DATASTRUCTS)
# 	endif()
# 	set(CMAKE_REQUIRED_INCLUDES)
# 	set(CMAKE_REQUIRED_LIBRARIES)
# endif()

MARK_AS_ADVANCED(LIBPURPLE_LIBRARY LIBPURPLE_INCLUDE_DIR)