cmake_minimum_required(VERSION 3.7.2)

if ("${CMAKE_BINARY_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
    message(FATAL_ERROR "In-source builds are disabled.
    Please create a subfolder called build and use `cmake ..` inside it.
    NOTE: cmake will now create CMakeCache.txt and CMakeFiles/*.
          You must delete them, or cmake will refuse to work.")
endif()
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "bin" "doc" "CMakeFiles" "lib" "include")

set(CMAKE_C_COMPILER "clang")
set(CMAKE_CXX_COMPILER "clang++")

project(library)
set(CMAKE_CXX_STANDARD 14)

# enable clang_tidy
set(CMAKE_CXX_CLANG_TIDY clang-tidy;)


file(GLOB_RECURSE SOURCES src/*.cpp)
file(GLOB_RECURSE HEADERS src/*.hpp)
file(GLOB_RECURSE TESTS test/*.cpp)
include_directories(src)
include_directories(test)

add_library(library ${SOURCES} ${HEADERS})


file(COPY "${CMAKE_SOURCE_DIR}/src/"
        DESTINATION "${CMAKE_SOURCE_DIR}/include"
        FILES_MATCHING
        PATTERN *.hpp
        )

set(LIBRARY_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/lib)

enable_testing()
find_package(Catch2 REQUIRED)
add_executable(UnitTests test/test_main.cpp ${SOURCES} ${HEADERS} ${TESTS})
target_link_libraries(UnitTests Catch2::Catch2)

include(CTest)
include(Catch)
catch_discover_tests(UnitTests)

if (ENABLE_COVERAGE)
    set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/../external/codecov/cmake" ${CMAKE_MODULE_PATH})
    list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/CMake")
    find_package(codecov)
    add_coverage(UnitTests)
    list(APPEND LCOV_REMOVE_PATTERNS "/usr/")
    coverage_evaluate()
endif()