cmake_minimum_required(VERSION 3.7)

project(ceev)

execute_process(
    COMMAND git status --porcelain=v1 --ignored=no
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_ISCOMMITTED
    OUTPUT_STRIP_TRAILING_WHITESPACE)
string(COMPARE EQUAL "${GIT_ISCOMMITTED}" "" is_committed)

execute_process(
    COMMAND git rev-parse --short HEAD
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_COMMIT_HASH
    OUTPUT_STRIP_TRAILING_WHITESPACE)

execute_process(
    COMMAND git log -1 --pretty=%B
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_COMMIT_MSG
    OUTPUT_STRIP_TRAILING_WHITESPACE)

execute_process(
    COMMAND git log -1 --pretty=%cD
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_COMMIT_DATE
    OUTPUT_STRIP_TRAILING_WHITESPACE)

execute_process(
    COMMAND git log -1 --pretty="%cN <%ce>" 
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_COMMIT_AUTHOR
    OUTPUT_STRIP_TRAILING_WHITESPACE)

if(NOT is_committed)
    set(GIT_COMMIT_HASH "${GIT_COMMIT_HASH}-dev")
    set(GIT_COMMIT_DATE "Not committed yet")
endif()

set(CMAKE_CXX_STANDARD 17)
find_package(SDL2 REQUIRED)
include_directories(${SDL2_INCLUDE_DIRS})

add_executable(${PROJECT_NAME} src/ceev.cc src/ceev.h)
find_package(ceev REQUIRED)
include_directories(${ceev_INCLUDE_DIRS})
target_link_libraries(${PROJECT_NAME} ${ceev_LIBRARIES})

target_link_libraries(${PROJECT_NAME} ${SDL2_LIBRARIES})

target_compile_definitions(${PROJECT_NAME} PRIVATE
    "-DGIT_COMMIT_HASH=\"${GIT_COMMIT_HASH}\"")

string(REPLACE "\n" "\\n" GIT_COMMIT_MSG "${GIT_COMMIT_MSG}")
string(REPLACE "\"" "" GIT_COMMIT_AUTHOR "${GIT_COMMIT_AUTHOR}")

target_compile_definitions(${PROJECT_NAME} PRIVATE
    "-DGIT_COMMIT_MSG=\"${GIT_COMMIT_MSG}\"")

target_compile_definitions(${PROJECT_NAME} PRIVATE "-DGIT_COMMIT_DATE=\"${GIT_COMMIT_DATE}\"")

target_compile_definitions(${PROJECT_NAME} PRIVATE "-DGIT_COMMIT_AUTHOR=\"${GIT_COMMIT_AUTHOR}\"")

install(TARGETS ${PROJECT_NAME} RUNTIME DESTINATION bin)