# include(FetchContent)
# FetchContent_Declare(gtest
#   QUIET
#   URL https://github.com/google/googletest/archive/release-1.10.0.tar.gz
# )
# # configure build of googletest
# set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
# set(BUILD_GMOCK OFF CACHE BOOL "" FORCE)
# FetchContent_MakeAvailable(gtest)

cmake_minimum_required(VERSION 2.8...3.10)

set(DEBUG_FLAGS "-O3")

include_directories(${PROJECT_SOURCE_DIR}/test)
include_directories(${PROJECT_SOURCE_DIR}/test/deps)
include_directories(${PROJECT_SOURCE_DIR}/src)
include_directories(${PROJECT_SOURCE_DIR}/src/cells)
include_directories(${PROJECT_SOURCE_DIR}/src/metrics)
include_directories(${PROJECT_SOURCE_DIR}/include/fieldstat)

# zlib, first install zlib from https://zlib.net/
# SET (ZLIB_ROOT "/home/chenzizhan/zlib")
# SET (ZLIB_INCLUDE_DIR "/home/chenzizhan/zlib/include/")
# SET (ZLIB_LIBRARY "/home/chenzizhan/zlib/lib/libz.so.1.2.13")

if (COVERAGE) # user defined
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage --coverage")
    MESSAGE ("CMAKE_C_FLAGS in test is " ${CMAKE_C_FLAGS})
    SET(LFLAGS "-lgcov --coverage")
endif()

FIND_PACKAGE (ZLIB REQUIRED)
MESSAGE (" zlib version major is " ${ZLIB_VERSION_MAJOR})
MESSAGE (" zlib version minor is " ${ZLIB_VERSION_MINOR})
MESSAGE (" zlib include is " ${ZLIB_INCLUDE_DIR})
MESSAGE (" zlib libraries are " ${ZLIB_LIBRARIES})

SET(TEST_UTILS_SRC
  utils.cpp
  )

function (add_unit_test file_name)
    add_executable(${file_name} ${SRC} ${TEST_UTILS_SRC} ${file_name}.cpp)
    target_link_libraries(${file_name} gtest-static fieldstat4_shared ${ZLIB_LIBRARIES} ${LFLAGS} )
    set_property(TARGET ${file_name} PROPERTY CXX_STANDARD 17)
endfunction()

# add_unit_test(test_easy_fs)
# add_unit_test(test_special_tags)
# add_unit_test(test_exporter_json)
# add_unit_test(test_fuzz_test)
# add_unit_test(test_merge)
# add_unit_test(test_metric_counter)
# add_unit_test(test_metric_histogram)
# add_unit_test(test_metric_hll)
# add_unit_test(test_performance)
# add_unit_test(test_register_and_reset)
# add_unit_test(test_write_json_file)
add_unit_test(perfs)