cmake_minimum_required(VERSION 3.12)

if(PLAYDATE_DEVICE)
	set(PROJECT_LANGUAGES C ASM CXX)
elseif(APPLE)
	set(PROJECT_LANGUAGES C OBJC CXX)
else()
	# Some error needs to go here, and more platforms...
endif()

set(CMAKE_CXX_STANDARD 11)

project(benzene ${PROJECT_LANGUAGES})

add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/third_party/sun/runtime EXCLUDE_FROM_ALL)

if(PLAYDATE_DEVICE)
	# Playdate is software renderer
elseif(APPLE)
	add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/third_party/sdl EXCLUDE_FROM_ALL)
else()
	# Some error needs to go here, and more platforms...
endif()

set(BENZENE_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
set(BENZENE_SOURCES
	${BENZENE_SRC_DIR}/bz/impl.c

	${BENZENE_SRC_DIR}/bz/audio/ogg.h
	${BENZENE_SRC_DIR}/bz/audio/ogg.c
	${BENZENE_SRC_DIR}/bz/audio/playback.h
	${BENZENE_SRC_DIR}/bz/audio/playback_internal.h
	${BENZENE_SRC_DIR}/bz/audio/playback.c
	${BENZENE_SRC_DIR}/bz/audio/speech.h
	${BENZENE_SRC_DIR}/bz/audio/speech.cpp
	${BENZENE_SRC_DIR}/bz/audio/wav.h
	${BENZENE_SRC_DIR}/bz/audio/wav.c

	${BENZENE_SRC_DIR}/bz/collision/collision.h
	${BENZENE_SRC_DIR}/bz/collision/collision.c
	${BENZENE_SRC_DIR}/bz/collision/particle_collision.h
	${BENZENE_SRC_DIR}/bz/collision/particle_collision.c

	${BENZENE_SRC_DIR}/bz/debug/assert.h
	${BENZENE_SRC_DIR}/bz/debug/assert.c
	${BENZENE_SRC_DIR}/bz/debug/log.h
	${BENZENE_SRC_DIR}/bz/debug/log.c
	${BENZENE_SRC_DIR}/bz/debug/perfgraph.h
	${BENZENE_SRC_DIR}/bz/debug/perfgraph.c

	${BENZENE_SRC_DIR}/bz/fx/agent_simulation.h
	${BENZENE_SRC_DIR}/bz/fx/agent_simulation_internal.h
	${BENZENE_SRC_DIR}/bz/fx/agent_simulation.c
	${BENZENE_SRC_DIR}/bz/fx/particle_simulation.h
	${BENZENE_SRC_DIR}/bz/fx/particle_simulation_internal.h
	${BENZENE_SRC_DIR}/bz/fx/particle_simulation.c
	${BENZENE_SRC_DIR}/bz/fx/particle_system.h
	${BENZENE_SRC_DIR}/bz/fx/particle_system_internal.h
	${BENZENE_SRC_DIR}/bz/fx/particle_system.c

	${BENZENE_SRC_DIR}/bz/game/actor.h
	${BENZENE_SRC_DIR}/bz/game/actor_internal.h
	${BENZENE_SRC_DIR}/bz/game/actor.c
	${BENZENE_SRC_DIR}/bz/game/scene.h
	${BENZENE_SRC_DIR}/bz/game/scene_internal.h
	${BENZENE_SRC_DIR}/bz/game/scene.c
	${BENZENE_SRC_DIR}/bz/game/scene_identifiers.cpp
	${BENZENE_SRC_DIR}/bz/game/tilemap.h
	${BENZENE_SRC_DIR}/bz/game/tilemap_internal.h
	${BENZENE_SRC_DIR}/bz/game/tilemap.c

	${BENZENE_SRC_DIR}/bz/gfx/aseprite.h
	${BENZENE_SRC_DIR}/bz/gfx/aseprite_internal.h
	${BENZENE_SRC_DIR}/bz/gfx/aseprite.c
	${BENZENE_SRC_DIR}/bz/gfx/draw_queue.h
	${BENZENE_SRC_DIR}/bz/gfx/draw_queue.c
	${BENZENE_SRC_DIR}/bz/gfx/drawing.h
	${BENZENE_SRC_DIR}/bz/gfx/drawing.c
	${BENZENE_SRC_DIR}/bz/gfx/font.h
	${BENZENE_SRC_DIR}/bz/gfx/font_internal.h
	${BENZENE_SRC_DIR}/bz/gfx/font.c
	${BENZENE_SRC_DIR}/bz/gfx/gfx.h
	${BENZENE_SRC_DIR}/bz/gfx/gfx_internal.h
	${BENZENE_SRC_DIR}/bz/gfx/gfx.c
	${BENZENE_SRC_DIR}/bz/gfx/particle_drawing.h
	${BENZENE_SRC_DIR}/bz/gfx/particle_drawing.c
	${BENZENE_SRC_DIR}/bz/gfx/tilemap.h
	${BENZENE_SRC_DIR}/bz/gfx/tilemap_internal.h
	${BENZENE_SRC_DIR}/bz/gfx/tilemap.c

	${BENZENE_SRC_DIR}/bz/input/input.h
	${BENZENE_SRC_DIR}/bz/input/input_internal.h
	${BENZENE_SRC_DIR}/bz/input/input.c
	${BENZENE_SRC_DIR}/bz/input/input_id.h
	${BENZENE_SRC_DIR}/bz/input/input_id_internal.h
	${BENZENE_SRC_DIR}/bz/input/platform.h

	${BENZENE_SRC_DIR}/bz/math/math.h
	${BENZENE_SRC_DIR}/bz/math/math.c
	${BENZENE_SRC_DIR}/bz/math/matrix.h
	${BENZENE_SRC_DIR}/bz/math/matrix.c
	${BENZENE_SRC_DIR}/bz/math/random.h
	${BENZENE_SRC_DIR}/bz/math/random.c
	${BENZENE_SRC_DIR}/bz/math/vector.h
	${BENZENE_SRC_DIR}/bz/math/vector.c

	${BENZENE_SRC_DIR}/bz/memory/allocator.h
	${BENZENE_SRC_DIR}/bz/memory/allocator.c
	${BENZENE_SRC_DIR}/bz/memory/arena.h
	${BENZENE_SRC_DIR}/bz/memory/arena_internal.h
	${BENZENE_SRC_DIR}/bz/memory/arena.c

	${BENZENE_SRC_DIR}/bz/renderer/palette.h
	${BENZENE_SRC_DIR}/bz/renderer/palette_internal.h
	${BENZENE_SRC_DIR}/bz/renderer/palette.c
	${BENZENE_SRC_DIR}/bz/renderer/render_pass.h
	${BENZENE_SRC_DIR}/bz/renderer/render_pass_internal.h
	${BENZENE_SRC_DIR}/bz/renderer/renderer.h
	${BENZENE_SRC_DIR}/bz/renderer/renderer_internal.h
	${BENZENE_SRC_DIR}/bz/renderer/renderer.c

	${BENZENE_SRC_DIR}/bz/resources/resource.h
	${BENZENE_SRC_DIR}/bz/resources/resource.c

	${BENZENE_SRC_DIR}/bz/scripting/bindings.h
	${BENZENE_SRC_DIR}/bz/scripting/bindings_internal.h
	${BENZENE_SRC_DIR}/bz/scripting/bindings.cpp
	${BENZENE_SRC_DIR}/bz/scripting/environment.h
	${BENZENE_SRC_DIR}/bz/scripting/environment_internal.h
	${BENZENE_SRC_DIR}/bz/scripting/environment.c
	${BENZENE_SRC_DIR}/bz/scripting/script.h
	${BENZENE_SRC_DIR}/bz/scripting/script_internal.h
	${BENZENE_SRC_DIR}/bz/scripting/script.c
	${BENZENE_SRC_DIR}/bz/scripting/static_crc32.hpp

	${BENZENE_SRC_DIR}/bz/types/common.h
	${BENZENE_SRC_DIR}/bz/types/identifier.h
	${BENZENE_SRC_DIR}/bz/types/identifier.c
	${BENZENE_SRC_DIR}/bz/types/point.h
	${BENZENE_SRC_DIR}/bz/types/rect.h
	${BENZENE_SRC_DIR}/bz/types/size.h
	${BENZENE_SRC_DIR}/bz/types/user_parameter.h
)

if(PLAYDATE_DEVICE)
	set(PLATFORM_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src_platform/playdate)
	set(BENZENE_PLATFORM_SOURCES
		${PLATFORM_SRC_DIR}/bz/debug/assert.c
		${PLATFORM_SRC_DIR}/bz/debug/log.c
		${PLATFORM_SRC_DIR}/bz/debug/perfgraph.c

		${PLATFORM_SRC_DIR}/bz/gfx/gfx_platform.h
		${PLATFORM_SRC_DIR}/bz/gfx/gfx_platform.c

		${PLATFORM_SRC_DIR}/bz/input/input.c

		${PLATFORM_SRC_DIR}/bz/memory/arena.c

		${PLATFORM_SRC_DIR}/bz/renderer/renderer.c

		${PLATFORM_SRC_DIR}/bz/resources/resource.c

		${PLATFORM_SRC_DIR}/playdate/entrypoint.h
		${PLATFORM_SRC_DIR}/playdate/entrypoint.c
	)
else()
	set(PLATFORM_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src_platform/sdl)
	set(BENZENE_PLATFORM_SOURCES
		${PLATFORM_SRC_DIR}/bz/audio/playback.c

		${PLATFORM_SRC_DIR}/bz/debug/assert.c
		${PLATFORM_SRC_DIR}/bz/debug/log.c
		${PLATFORM_SRC_DIR}/bz/debug/perfgraph.c

		${PLATFORM_SRC_DIR}/bz/gfx/gfx_platform.h
		${PLATFORM_SRC_DIR}/bz/gfx/gfx_platform.c

		${PLATFORM_SRC_DIR}/bz/input/input.c

		${PLATFORM_SRC_DIR}/bz/memory/arena.c

		${PLATFORM_SRC_DIR}/bz/renderer/renderer.c

		${PLATFORM_SRC_DIR}/bz/resources/file_system_internal.h
		${PLATFORM_SRC_DIR}/bz/resources/resource.c

		${PLATFORM_SRC_DIR}/main.c
	)
endif()

if(NOT PLAYDATE_DEVICE)
	set(PHYSFS_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/physfs/)
	set(PHYSFS_SOURCES
		${PHYSFS_SRC_DIR}/src/physfs.c
		${PHYSFS_SRC_DIR}/src/physfs.h
		${PHYSFS_SRC_DIR}/src/physfs_archiver_7z.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_dir.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_grp.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_hog.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_iso9660.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_mvl.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_qpak.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_slb.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_unpacked.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_vdf.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_wad.c
		${PHYSFS_SRC_DIR}/src/physfs_archiver_zip.c
		${PHYSFS_SRC_DIR}/src/physfs_byteorder.c
		${PHYSFS_SRC_DIR}/src/physfs_casefolding.h
		${PHYSFS_SRC_DIR}/src/physfs_internal.h
		${PHYSFS_SRC_DIR}/src/physfs_lzmasdk.h
		${PHYSFS_SRC_DIR}/src/physfs_miniz.h
		${PHYSFS_SRC_DIR}/src/physfs_platform_android.c
		${PHYSFS_SRC_DIR}/src/physfs_platform_os2.c
		${PHYSFS_SRC_DIR}/src/physfs_platform_posix.c
		${PHYSFS_SRC_DIR}/src/physfs_platform_qnx.c
		${PHYSFS_SRC_DIR}/src/physfs_platform_unix.c
		${PHYSFS_SRC_DIR}/src/physfs_platform_windows.c
		${PHYSFS_SRC_DIR}/src/physfs_platforms.h
		${PHYSFS_SRC_DIR}/src/physfs_unicode.c
	)
	if(APPLE)
		list(APPEND PHYSFS_SOURCES ${PHYSFS_SRC_DIR}/src/physfs_platform_apple.m)
	endif()
endif()

set(PARSON_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/parson/)
set(PARSON_SOURCES
	${PARSON_SRC_DIR}/parson.h
	${PARSON_SRC_DIR}/parson.c
)

set(PCG_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/pcg-c-basic/)
set(PCG_SOURCES
	${PCG_SRC_DIR}/pcg_basic.h
	${PCG_SRC_DIR}/pcg_basic.c
)

set(CRC_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/snippets_org_crc/)
set(CRC_SOURCES
	${CRC_SRC_DIR}/crc.h
	${CRC_SRC_DIR}/crc.c
)

set(SOLOUD_SPEECH_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/soloud_speech/)
set(SOLOUD_SPEECH_SOURCES
	${SOLOUD_SPEECH_SRC_DIR}/darray.h
	${SOLOUD_SPEECH_SRC_DIR}/darray.cpp
	${SOLOUD_SPEECH_SRC_DIR}/klatt.h
	${SOLOUD_SPEECH_SRC_DIR}/klatt.cpp
	${SOLOUD_SPEECH_SRC_DIR}/resonator.h
	${SOLOUD_SPEECH_SRC_DIR}/resonator.cpp
	${SOLOUD_SPEECH_SRC_DIR}/tts.h
	${SOLOUD_SPEECH_SRC_DIR}/tts.cpp
)


add_library(benzene STATIC ${BENZENE_SOURCES})
set_property(TARGET benzene PROPERTY C_STANDARD 11)

if(PLAYDATE_DEVICE)
	# NB: This is copied out of the Playdate SDK. Check for correctness on update.

	set(ENVSDK $ENV{PLAYDATE_SDK_PATH})

	if (NOT ${ENVSDK} STREQUAL "")
		# Convert path from Windows
		file(TO_CMAKE_PATH ${ENVSDK} SDK)
	else()
		execute_process(
				COMMAND bash -c "egrep '^\\s*SDKRoot' $HOME/.Playdate/config"
				COMMAND head -n 1
				COMMAND cut -c9-
				OUTPUT_VARIABLE SDK
				OUTPUT_STRIP_TRAILING_WHITESPACE
		)
	endif()

	if (NOT EXISTS ${SDK})
		message(FATAL_ERROR "SDK Path not found; set ENV value PLAYDATE_SDK_PATH")
		return()
	endif()

	##

	include_directories("${SDK}/C_API")
	set(PDC "${SDK}/bin/pdc" -sdkpath "${SDK}")

	add_compile_definitions(TARGET_EXTENSION=1)

	set(HEAP_SIZE 8388208)
	set(STACK_SIZE 61800)
	set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -x assembler-with-cpp -D__HEAP_SIZE=${HEAP_SIZE} -D__STACK_SIZE=${STACK_SIZE}")

	set(MCFLAGS -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-sp-d16 -D__FPU_USED=1)

	target_compile_definitions(benzene PUBLIC TARGET_PLAYDATE=1)
	target_compile_options(benzene PUBLIC -Wall -Wno-unknown-pragmas -Wdouble-promotion)
#	target_compile_options(benzene PUBLIC $<$<CONFIG:DEBUG>:-O2>)
#	target_compile_options(benzene PUBLIC $<$<CONFIG:RELEASE>:-O2>)
	target_compile_options(benzene PUBLIC -O2)

	target_compile_options(benzene PUBLIC ${MCFLAGS})
	target_compile_options(benzene PUBLIC -falign-functions=16 -fomit-frame-pointer)
	target_compile_options(benzene PUBLIC -gdwarf-2)
	target_compile_options(benzene PUBLIC -fverbose-asm)
	target_compile_options(benzene PUBLIC -ffunction-sections -fdata-sections)
	target_compile_options(benzene PUBLIC -mword-relocations -fno-common)

	#target_compile_options(benzene PUBLIC $<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>)

	target_link_options(benzene PUBLIC ${MCFLAGS})

	target_link_options(benzene PUBLIC -specs=nosys.specs)

#	target_compile_options(benzene PUBLIC "-funroll-loops")

	target_compile_options(benzene PUBLIC "-nostdlib")
#	target_compile_options(benzene PUBLIC "-nostdinc")
	target_compile_options(benzene PUBLIC "-nodefaultlibs")

elseif(APPLE)

endif()

if(PLAYDATE_DEVICE)
	target_sources(benzene PRIVATE ${BENZENE_PLATFORM_SOURCES} ${PARSON_SOURCES} ${PCG_SOURCES} ${CRC_SOURCES})
else()
	target_sources(benzene PRIVATE ${BENZENE_PLATFORM_SOURCES} ${PHYSFS_SOURCES} ${PARSON_SOURCES} ${PCG_SOURCES} ${CRC_SOURCES} ${SOLOUD_SPEECH_SOURCES})
endif()

target_precompile_headers(benzene PRIVATE ${BENZENE_SRC_DIR}/bz/common.pch)

target_link_libraries(benzene PRIVATE sun)
target_include_directories(benzene PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/third_party/sun/runtime/src)

if(PLAYDATE_DEVICE)

else()
	if(TARGET SDL2::SDL2main)
		target_link_libraries(benzene PRIVATE SDL2::SDL2main)
	endif()

	# FIXME, Ideally we want to use the DLLs so that Steam etc. can patch
	#target_link_libraries(benzene PRIVATE SDL2::SDL2)
	target_link_libraries(benzene PRIVATE SDL2::SDL2-static)
endif()

if(APPLE)
	target_link_libraries(benzene PRIVATE "-framework Foundation")
	target_link_libraries(benzene PRIVATE "-framework IOKit")
endif()

target_include_directories(benzene PRIVATE ${GAME_SRC_DIR})
target_include_directories(benzene PRIVATE ${BENZENE_SRC_DIR})
target_include_directories(benzene PRIVATE ${PLATFORM_SRC_DIR})
target_include_directories(benzene PRIVATE ${PARSON_SRC_DIR})
target_include_directories(benzene PRIVATE ${PCG_SRC_DIR})
target_include_directories(benzene PRIVATE ${CRC_SRC_DIR})
target_include_directories(benzene PRIVATE ${SOLOUD_SPEECH_SRC_DIR})
target_include_directories(benzene PRIVATE ${PHYSFS_SRC_DIR}/src)
target_include_directories(benzene PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/third_party/stb)