cmake_minimum_required(VERSION 3.1.0)

project(sway C)

set(FALLBACK_CONFIG_DIR "/etc/sway" CACHE PATH
  "Fallback config directory defaults to /etc/sway")
add_definitions(-DFALLBACK_CONFIG_DIR=\"${FALLBACK_CONFIG_DIR}\")

set(CMAKE_C_FLAGS "-g")
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_EXTENSIONS OFF)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
add_definitions(
    -D_GNU_SOURCE
)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-parameter")

list(INSERT CMAKE_MODULE_PATH 0
	${CMAKE_CURRENT_SOURCE_DIR}/CMake
)
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git)
	execute_process(
		COMMAND git describe --always
		OUTPUT_VARIABLE GIT_COMMIT_HASH
		OUTPUT_STRIP_TRAILING_WHITESPACE
		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
	)
	execute_process(
		COMMAND  git rev-parse --abbrev-ref HEAD
		OUTPUT_VARIABLE GIT_BRANCH
		OUTPUT_STRIP_TRAILING_WHITESPACE
		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
	)
endif()

add_definitions(-DSWAY_GIT_VERSION=\"${GIT_COMMIT_HASH}\")
add_definitions(-DSWAY_GIT_BRANCH=\"${GIT_BRANCH}\")

string(TIMESTAMP CURRENT_DATE "%Y-%m-%d" UTC)
add_definitions(-DSWAY_VERSION_DATE=\"${CURRENT_DATE}\")

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)

add_subdirectory(swaybg)
add_subdirectory(swaymsg)
add_subdirectory(swaygrab)
add_subdirectory(swaybar)

find_package(XKBCommon REQUIRED)
find_package(WLC REQUIRED)
find_package(A2X REQUIRED)
find_package(PCRE REQUIRED)
find_package(Wayland REQUIRED)
find_package(JsonC REQUIRED)

file(GLOB sources ${PROJECT_SOURCE_DIR}/sway/*.c)
file(GLOB common ${PROJECT_SOURCE_DIR}/common/*.c)

include(Wayland)
WAYLAND_ADD_PROTOCOL_SERVER(proto-desktop-shell
	${PROJECT_SOURCE_DIR}/protocols/desktop-shell.xml
	desktop-shell
)

include_directories(
	${WLC_INCLUDE_DIRS}
	${PCRE_INCLUDE_DIRS}
	${JSONC_INCLUDE_DIRS}
	${XKBCOMMON_INCLUDE_DIRS}
	${CMAKE_CURRENT_BINARY_DIR}
)

add_executable(sway
	${sources}
	${common}
	${proto-desktop-shell}
)

target_link_libraries(sway
	${WLC_LIBRARIES}
	${XKBCOMMON_LIBRARIES}
	${PCRE_LIBRARIES}
	${JSONC_LIBRARIES}
	${WAYLAND_SERVER_LIBRARIES}
)

install(
	TARGETS sway
	RUNTIME
	DESTINATION bin
	COMPONENT runtime
)
install(
	FILES ${CMAKE_CURRENT_SOURCE_DIR}/config
	DESTINATION ${FALLBACK_CONFIG_DIR}
	COMPONENT configuration
)

add_custom_target(man ALL)

function(add_manpage name section)
	add_custom_command(
	OUTPUT  ${CMAKE_CURRENT_BINARY_DIR}/${name}.${section}
	COMMAND ${A2X_COMMAND}
			--no-xmllint
			--doctype manpage
			--format manpage
			-D ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
			${CMAKE_CURRENT_SOURCE_DIR}/${name}.${section}.txt
	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.${section}.txt
	COMMENT Generating manpage for ${name}.${section}
	)

	add_custom_target(man-${name}.${section}
	DEPENDS
		${CMAKE_CURRENT_BINARY_DIR}/${name}.${section}
	)
	add_dependencies(man
		man-${name}.${section}
	)

	install(
	FILES ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${name}.${section}
	DESTINATION share/man/man${section}
	COMPONENT documentation
	)
endfunction()

add_manpage(sway 1)
add_manpage(sway 5)
add_manpage(swaymsg 1)
add_manpage(swaygrab 1)

install(
	FILES ${CMAKE_CURRENT_SOURCE_DIR}/sway.desktop
	DESTINATION share/wayland-sessions
	COMPONENT data
)
install(
	FILES ${CMAKE_CURRENT_SOURCE_DIR}/sway-xorg.desktop
	DESTINATION share/xsessions
	COMPONENT data
)