cmake_minimum_required(VERSION 3.26)

# Additional paths to search for custom and third-party CMake modules
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")

include(BuildProperties)

prevent_in_source_build()
disable_deprecated_features()

# When this package is included as a subproject, there's no need to
# build and run the unit-tests.
# Sets -DENABLE_TESTS to false by default if this is a third-party lib build
# This check must appear before project()
disable_tests_if_subproject()


project(<APPLICATION-NAME>
	VERSION 0.1
	LANGUAGES C CXX
	# HOMEPAGE_URL <URL>
	DESCRIPTION "Description"
)
include(CPM)

option(USE_CCACHE
	[=[Use ccache compiler cache to speed up builds.
Enabled by default if ccache is found]=]
ON
)

IF( NOT CMAKE_BUILD_TYPE )
  SET( CMAKE_BUILD_TYPE Debug )
ENDIF()

set(CMAKE_C_STANDARD 17)
set(CMAKE_CXX_STANDARD 20)

# Disable GNU compiler extensions
set(CMAKE_C_EXTENSIONS OFF)
set(CMAKE_CXX_EXTENSIONS OFF)

# Search for the code caching compiler wrapper, ccache and enable it
# if found. This will speed up repeated builds.
if (USE_CCACHE)
	message(CHECK_START "Detecting cacche")

	find_program(CCACHE_PATH ccache)
	if(DEFINED CCACHE_PATH)
  	  message(CHECK_PASS("found"))
  	  set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE_PATH})
  	  set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ${CCACHE_PATH})
	endif()

	list(APPEND CMAKE_MESSAGE_INDENT " ")
  	message(STATUS "(set -DUSE_CCACHE=Off to disable)")
	list(POP_BACK CMAKE_MESSAGE_INDENT)
endif()

# enable compile_commands.json generation for clangd
set(CMAKE_EXPORT_COMPILE_COMMANDS On)

# Initialize FetchContent
include(FetchContent)

# Initialize pkgconf
#find_package(PkgConfig REQUIRED)

# Example: Find SDL2, SDL2_image, and SDL2_gfx using PkgConfig
# add IMPORTED_TARGET to enable fancy PkgConfig::SDL2 syntax
#pkg_check_modules(SDL2 REQUIRED IMPORTED_TARGET SDL2)
#pkg_check_modules(SDL2_IMAGE REQUIRED IMPORTED_TARGET SDL2_image)
#pkg_check_modules(SDL2_GFX REQUIRED IMPORTED_TARGET SDL2_gfx)

#set(engine_DEP_LIBS
#	PkgConfig::SDL2
#	PkgConfig::SDL2_IMAGE
#	PkgConfig::SDL2for_GFX
#	# if not using PkgConfig:: IMPORTED_TARGET syntax
#	${SDL2_LIBRARIES}
#	${SDL2_IMG_LIBRARIES}
#	${SDL2_GFX_LIBRARIES}
#)

if (ENABLE_TESTS)
	CPMFindPackage(NAME Catch2
		GITHUB_REPOSITORY catchorg/Catch2
		VERSION 3.4.0
		OPTIONS
			"CATCH_DEVELOPMENT_BUILD OFF"
			"CATCH_BUILD_TESTING OFF"
	)
	CPMFindPackage(NAME FakeIt
		GITHUB_REPOSITORY eranpeer/FakeIt
		GIT_TAG 2.4.0
		OPTIONS
 	   		"ENABLE_TESTING OFF"
	)

	if (TARGET Catch2)
		set_target_properties(Catch2 PROPERTIES
			CXX_STANDARD 20
		)
	elseif (TARGET Catch2WithMain)
		set_target_properties(Catch2WithMain PROPERTIES
 		    	CXX_STANDARD 20
		)
	endif()
	if (Catch2_ADDED STREQUAL "YES")
		list(APPEND CMAKE_MODULE_PATH ${Catch2_SOURCE_DIR}/extras)
	else()
		list(APPEND CMAKE_MODULE_PATH ${Catch2_DIR})
	endif()
endif()

# Set output directories for build targets
set(ARTIFACT_DIR "${CMAKE_BINARY_DIR}/out")
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${ARTIFACT_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${ARTIFACT_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${ARTIFACT_DIR}/bin)

# Include directories
include_directories(${CMAKE_SOURCE_DIR}/src)
include_directories(${CMAKE_SOURCE_DIR}/include)

# Example: Add a target to copy application resource files to the build dir
#add_custom_target(copy_assets
#COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_LIST_DIR}/data ${CMAKE_BINARY_DIR}/artifacts/share/data
#	COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_LIST_DIR}/data ${CMAKE_BINARY_DIR}/tests/data
#)

# Add subdirectories
add_subdirectory(src)
add_subdirectory(app)

if(ENABLE_TESTS)
	add_subdirectory(tests)
endif()

# vim: ts=4 sw=4 noet foldmethod=indent :