cmake_minimum_required(VERSION 3.14)

project(aare 
    VERSION 1.0.0
    DESCRIPTION "Data processing library for PSI detectors"
    HOMEPAGE_URL "https://github.com/slsdetectorgroup/aare"
    LANGUAGES C CXX 
)

set(CMAKE_CXX_STANDARD 17) 
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

if (${CMAKE_VERSION} VERSION_GREATER "3.24")
    cmake_policy(SET CMP0135 NEW) #Fetch content download timestamp
endif()
cmake_policy(SET CMP0079 NEW)

include(GNUInstallDirs)
include(FetchContent)

#Set default build type if none was specified
include(cmake/helpers.cmake)
default_build_type("Release")

set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})


# General options
option(AARE_PYTHON_BINDINGS "Build python bindings" ON)
option(AARE_TESTS "Build tests" OFF)
option(AARE_EXAMPLES "Build examples" OFF)
option(AARE_IN_GITHUB_ACTIONS "Running in Github Actions" OFF)
option(AARE_DOCS "Build documentation" OFF)

# Configure which of the dependencies to use FetchContent for
option(AARE_FETCH_FMT "Use FetchContent to download fmt" ON)
option(AARE_FETCH_PYBIND11 "Use FetchContent to download pybind11" ON)
option(AARE_FETCH_CATCH "Use FetchContent to download catch2" ON)
option(AARE_FETCH_JSON "Use FetchContent to download nlohmann::json" ON)
option(AARE_FETCH_ZMQ "Use FetchContent to download libzmq" ON)


#Convenience option to use system libraries only (no FetchContent)
option(AARE_SYSTEM_LIBRARIES "Use system libraries" OFF)
if(AARE_SYSTEM_LIBRARIES)
    message(STATUS "Build using system libraries")
    set(AARE_FETCH_FMT OFF CACHE BOOL "Disabled FetchContent for FMT" FORCE)
    set(AARE_FETCH_PYBIND11 OFF CACHE BOOL "Disabled FetchContent for pybind11" FORCE)
    set(AARE_FETCH_CATCH OFF CACHE BOOL "Disabled FetchContent for catch2" FORCE)
    set(AARE_FETCH_JSON OFF CACHE BOOL "Disabled FetchContent for nlohmann::json" FORCE)
    set(AARE_FETCH_ZMQ OFF CACHE BOOL "Disabled FetchContent for libzmq" FORCE)
endif()


set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if(AARE_FETCH_ZMQ)
    # Fetchcontent_Declare is deprecated need to find a way to update this
    # for now setting the policy to old is enough
    if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.30")
        cmake_policy(SET CMP0169 OLD)
    endif()
    FetchContent_Declare(
        libzmq
        GIT_REPOSITORY https://github.com/zeromq/libzmq.git
        GIT_TAG        v4.3.4
    )
    # Disable unwanted options from libzmq
    set(BUILD_TESTS OFF CACHE BOOL "Switch off libzmq test build")
    set(BUILD_SHARED OFF CACHE BOOL "Switch off libzmq shared libs")
    set(WITH_PERF_TOOL OFF CACHE BOOL "")
    set(ENABLE_CPACK OFF CACHE BOOL "")
    set(ENABLE_CLANG OFF CACHE BOOL "")
    set(ENABLE_CURVE OFF CACHE BOOL "")
    set(ENABLE_DRAFTS OFF CACHE BOOL "")

    # TODO! Verify that this is what we want to do in aare
    # Using GetProperties and Populate to be able to exclude zmq
    # from install (not possible with FetchContent_MakeAvailable(libzmq))
    FetchContent_GetProperties(libzmq)
    if(NOT libzmq_POPULATED)
        FetchContent_Populate(libzmq)
        add_subdirectory(${libzmq_SOURCE_DIR} ${libzmq_BINARY_DIR} EXCLUDE_FROM_ALL)
    endif()
else()
    find_package(ZeroMQ 4 REQUIRED)
endif()


if (AARE_FETCH_FMT)
    set(FMT_TEST OFF CACHE INTERNAL "disabling fmt tests")
    FetchContent_Declare(
            fmt
            GIT_REPOSITORY  https://github.com/fmtlib/fmt.git
            GIT_TAG         10.2.1
            GIT_PROGRESS    TRUE
            USES_TERMINAL_DOWNLOAD TRUE
    )
    FetchContent_MakeAvailable(fmt)
    set_property(TARGET fmt PROPERTY POSITION_INDEPENDENT_CODE ON)
else()
      find_package(fmt 6 REQUIRED)
endif()


if (AARE_FETCH_JSON)
    FetchContent_Declare(
        json 
        URL https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz
    )
    FetchContent_MakeAvailable(json)
else()
    find_package(nlohmann_json 3.11.3 REQUIRED)
endif()

include(GNUInstallDirs)

# If conda build, always set lib dir to 'lib'
if($ENV{CONDA_BUILD})
  set(CMAKE_INSTALL_LIBDIR "lib")
endif()

# Set lower / upper case project names
string(TOUPPER "${PROJECT_NAME}" PROJECT_NAME_UPPER)
string(TOLOWER "${PROJECT_NAME}" PROJECT_NAME_LOWER)


# Set targets export name (used by slsDetectorPackage and dependencies)
set(TARGETS_EXPORT_NAME "${PROJECT_NAME_LOWER}-targets")
set(namespace "aare::")

set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})

# Check if project is being used directly or via add_subdirectory
set(AARE_MASTER_PROJECT OFF)
if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
    set(AARE_MASTER_PROJECT ON)
endif()

add_library(aare_compiler_flags INTERFACE)
target_compile_features(aare_compiler_flags INTERFACE cxx_std_17)

if(AARE_PYTHON_BINDINGS)
    add_subdirectory(python)
endif()

#################
# MSVC specific #
#################
if(MSVC)
add_compile_definitions(AARE_MSVC)
if(CMAKE_BUILD_TYPE STREQUAL "Release")
    message(STATUS "Release build")
    target_compile_options(aare_compiler_flags INTERFACE /O2)
else()
    message(STATUS "Debug build")
    target_compile_options(
        aare_compiler_flags 
        INTERFACE 
            /Od 
            /Zi 
            /MDd
            /D_ITERATOR_DEBUG_LEVEL=2
    )
    target_link_options(
        aare_compiler_flags
        INTERFACE
            /DEBUG:FULL
            )
endif()
target_compile_options(
    aare_compiler_flags 
    INTERFACE
    /w # disable warnings
)


else()
######################
# GCC/Clang specific #
######################

if(CMAKE_BUILD_TYPE STREQUAL "Release")
    message(STATUS "Release build")
    target_compile_options(aare_compiler_flags INTERFACE -O3)
else()
    message(STATUS "Debug build")
    target_compile_options(
        aare_compiler_flags 
        INTERFACE 
            -Og 
            -ggdb3 
    )

endif()

# Common flags for GCC and Clang
target_compile_options(
    aare_compiler_flags 
    INTERFACE 
        -Wall 
        -Wextra 
        -pedantic 
        -Wshadow 
        -Wnon-virtual-dtor
        -Woverloaded-virtual
        -Wdouble-promotion
        -Wformat=2
        -Wredundant-decls
        -Wvla
        -Wdouble-promotion
        -Werror=return-type #important can cause segfault in optimzed builds
    )

endif() #GCC/Clang specific








if(AARE_TESTS)
    enable_testing()
    add_subdirectory(tests)
endif()

###------------------------------------------------------------------------------MAIN LIBRARY
###------------------------------------------------------------------------------------------

set(PUBLICHEADERS
    include/aare/ClusterFinder.hpp
    include/aare/defs.hpp
    include/aare/Dtype.hpp
    include/aare/File.hpp
    include/aare/FileInterface.hpp
    include/aare/Frame.hpp
    include/aare/json.hpp
    include/aare/NDArray.hpp
    include/aare/NDView.hpp
    include/aare/NumpyFile.hpp
    include/aare/NumpyHelpers.hpp
    include/aare/Pedestal.hpp
    include/aare/PixelMap.hpp
    include/aare/RawFile.hpp
    include/aare/SubFile.hpp
    include/aare/VarClusterFinder.hpp

)


set(SourceFiles
    ${CMAKE_CURRENT_SOURCE_DIR}/src/defs.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/Dtype.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/Frame.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/File.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/NumpyFile.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/PixelMap.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/RawFile.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/SubFile.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/src/NumpyHelpers.cpp
)


add_library(aare_core STATIC ${SourceFiles})
target_include_directories(aare_core PUBLIC 
    "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>" 
    "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
)

target_link_libraries(aare_core PUBLIC fmt::fmt PRIVATE aare_compiler_flags nlohmann_json::nlohmann_json)

set_target_properties(aare_core PROPERTIES
    ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}
    PUBLIC_HEADER "${PUBLICHEADERS}"
)

if (AARE_PYTHON_BINDINGS)
    set_property(TARGET aare_core PROPERTY POSITION_INDEPENDENT_CODE ON)
endif()

if(AARE_TESTS)
    set(TestSources
            ${CMAKE_CURRENT_SOURCE_DIR}/src/defs.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/Dtype.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/Frame.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/NDArray.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/NDView.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/ClusterFinder.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/Pedestal.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/NumpyFile.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/NumpyHelpers.test.cpp
            ${CMAKE_CURRENT_SOURCE_DIR}/src/RawFile.test.cpp

        )
    target_sources(tests PRIVATE ${TestSources} )
endif()



###------------------------------------------------------------------------------------------
###------------------------------------------------------------------------------------------


if(AARE_MASTER_PROJECT)
    install(TARGETS aare_core aare_compiler_flags 
        EXPORT "${TARGETS_EXPORT_NAME}"
        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/aare
    )
endif()

set(CMAKE_POSITION_INDEPENDENT_CODE ON)
set(CMAKE_INSTALL_RPATH $ORIGIN)
set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)


# #Overall target to link to when using the library
# add_library(aare INTERFACE) 
# target_link_libraries(aare INTERFACE aare_core aare_compiler_flags)
# target_include_directories(aare INTERFACE 
#     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
#     $<INSTALL_INTERFACE:include>
# )

# add_subdirectory(examples)

if(AARE_DOCS)
    add_subdirectory(docs)
endif()


# custom target to run check formatting with clang-format
add_custom_target(
    check-format
    COMMAND find \( -name "*.cpp" -o -name "*.hpp" \) -not -path "./build/*" | xargs -I {} -n 1 -P 10 bash -c  "clang-format -Werror -style=\"file:.clang-format\" {} | diff {} -"
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMENT "Checking code formatting with clang-format"
    VERBATIM
    
)

add_custom_target(
    format-files
    COMMAND find \( -name "*.cpp" -o -name "*.hpp" \) -not -path "./build/*" | xargs -I {} -n 1 -P 10 bash -c "clang-format -i -style=\"file:.clang-format\" {}"
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMENT "Formatting with clang-format"
    VERBATIM
)

if (AARE_IN_GITHUB_ACTIONS)
    message(STATUS "Running in Github Actions")
    set(CLANG_TIDY_COMMAND "clang-tidy-17")
else()
    set(CLANG_TIDY_COMMAND "clang-tidy")
endif()

add_custom_target(
    clang-tidy
    COMMAND find \( -path "./src/*" -a -not -path "./src/python/*" -a \( -name "*.cpp"   -not -name "*.test.cpp"\)  \)    -not -name "CircularFifo.hpp" -not -name "ProducerConsumerQueue.hpp" -not -name "VariableSizeClusterFinder.hpp" | xargs -I {} -n 1 -P 10 bash -c "${CLANG_TIDY_COMMAND} --config-file=.clang-tidy -p build {}"
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMENT "linting with clang-tidy"
    VERBATIM
)

# if(AARE_MASTER_PROJECT)
#     set(CMAKE_INSTALL_DIR "share/cmake/${PROJECT_NAME}")
#     set(PROJECT_LIBRARIES slsSupportShared slsDetectorShared slsReceiverShared)
#     include(cmake/package_config.cmake)
# endif()