#the usual set of dependencies

find_package(OpenGL REQUIRED)

find_package(GLEW REQUIRED)

find_package(SDL REQUIRED)

find_package(SDL_mixer REQUIRED)

find_package(SDL_net REQUIRED)

find_package(SDL_image REQUIRED)

find_package(SDL_ttf REQUIRED)

#compile our rtl implementation

add_subdirectory(rtl)

include_directories("${GLEW_INCLUDE_PATH}")

include_directories("${CMAKE_CURRENT_SOURCE_DIR}/rtl")

configure_file(${CMAKE_SOURCE_DIR}/hedgewars/config.inc.in ${CMAKE_CURRENT_BINARY_DIR}/config.inc)

#get the list of pas files that are going to be converted and compiled

file(GLOB engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/*.pas")

#TODO: temporary until cmake can configure itself accordingly

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/uWeb.pas")

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/uVideoRec.pas")

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/uTouch.pas")

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/PNGh.pas")

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/pas2cSystem.pas")

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/pas2cRedo.pas")

list(REMOVE_ITEM engine_sources_pas "${CMAKE_SOURCE_DIR}/hedgewars/hwLibrary.pas")

foreach(sourcefile ${engine_sources_pas})

    get_filename_component(sourcename ${sourcefile} NAME_WE) #drops .pas

    set(engine_sources "${CMAKE_CURRENT_BINARY_DIR}/${sourcename}.c" ${engine_sources})

endforeach()

#invoke pas2c on our pas files

add_custom_command(OUTPUT ${engine_sources}

        COMMAND "${EXECUTABLE_OUTPUT_PATH}/pas2c${CMAKE_EXECUTABLE_SUFFIX}"

        ARGS -n "hwengine"

             -i "${CMAKE_SOURCE_DIR}/hedgewars"

             -o "${CMAKE_CURRENT_BINARY_DIR}"

             -a "${CMAKE_CURRENT_BINARY_DIR}"

        DEPENDS pas2c

    )

add_custom_target(engine_c DEPENDS ${engine_sources})

#compile the c files

add_executable(hwengine WIN32 ${engine_sources})

target_link_libraries(hwengine  fpcrtl

                                ${LUA_LIBRARY}

                                ${OPENGL_LIBRARY}

                                ${SDL_LIBRARY}

                                ${SDLMIXER_LIBRARY}

                                ${SDLNET_LIBRARY}

                                ${SDLIMAGE_LIBRARY}

                                ${SDLTTF_LIBRARY}

                                #TODO: add other libraries

                            )

#TODO: move this away in its proper findxxx.cmake

if(APPLE)

    #let's look for the installed sdlmain file; if it is not found, let's build our own

    find_package(SDL REQUIRED)

    #remove the ";-framework Cocoa" from the SDL_LIBRARY variable

    string(REGEX REPLACE "(.*);-.*" "\\1" sdl_dir "${SDL_LIBRARY}")

    #find libsdmain.a

    find_file(SDLMAIN_LIB libSDLMain.a PATHS ${sdl_dir}/Resources/)

    if(SDLMAIN_LIB MATCHES "SDLMAIN_LIB-NOTFOUND")

        include_directories(${SDL_INCLUDE_DIR})

        add_library (SDLmain STATIC ${CMAKE_SOURCE_DIR}/hedgewars/sdlmain_osx/SDLMain.m)

        #add a dependency to the hwengine target

        set(SDLMAIN_LIB "${LIBRARY_OUTPUT_PATH}/libSDLmain.a")

    endif()

    target_link_libraries(hwengine ${SDLMAIN_LIB})

endif(APPLE)

install(PROGRAMS "${EXECUTABLE_OUTPUT_PATH}/hwengine${CMAKE_EXECUTABLE_SUFFIX}" DESTINATION ${target_dir})