# Copyright 2019 Proyectos y Sistemas de Mantenimiento SL (eProsima).
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

###############################################################################
# CMake build rules for micro XRCE-DDS
###############################################################################

cmake_minimum_required(VERSION 3.16)

# Set CMAKE_BUILD_TYPE to Release by default.
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    message(STATUS "Setting build type to 'Release' as none was specified.")
    set(CMAKE_BUILD_TYPE Release CACHE STRING
        "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."
        FORCE)
    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()

project(microxrcedds VERSION "3.0.1")

set(_client_tag v3.0.0)
set(_client_version 3.0.0)
set(_agent_tag v3.0.1)
set(_gen_tag v2.0.2)

###############################################################################
# Build options.
###############################################################################
option(UXRCE_BUILD_EXAMPLES "Build and install examples." OFF)
option(UXRCE_ENABLE_CLIENT "Enable the building and installation of Micro XRCE-DDS Client." ON)
option(UXRCE_ENABLE_AGENT "Enable the building and installation of Micro XRCE-DDS Agent." ON)
option(UXRCE_BUILD_AGENT_EXECUTABLE "Enable the building Micro XRCE-DDS Agent executable." OFF)
option(UXRCE_ENABLE_GEN "Enable the building and installation of Micro XRCE-DDS Gen." OFF)
option(UXRCE_BUILD_TESTS "Build tests." OFF)
option(UXRCE_BUILD_PROFILING "Build profiling test executables.")

option(UXRCE_BUILD_CI_TESTS "Build CI tests." OFF)
if(UXRCE_BUILD_CI_TESTS)
    set(UXRCE_BUILD_TESTS ON)
endif()

include(GNUInstallDirs)
set(BIN_INSTALL_DIR     ${CMAKE_INSTALL_BINDIR}     CACHE PATH "Installation directory for binaries")
set(INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_INCLUDEDIR} CACHE PATH "Installation directory for C headers")
set(LIB_INSTALL_DIR     ${CMAKE_INSTALL_LIBDIR}     CACHE PATH "Installation directory for libraries")
set(DATA_INSTALL_DIR    ${CMAKE_INSTALL_DATADIR}    CACHE PATH "Installation directory for data")
if(WIN32)
    set(LICENSE_INSTALL_DIR . CACHE PATH "Installation directory for licenses")
else()
    set(LICENSE_INSTALL_DIR ${DATA_INSTALL_DIR}/${PROJECT_NAME} CACHE PATH "Installation directory for licenses")
endif()

###############################################################################
# Tests
###############################################################################
set(_run_tests OFF)
set(_test_command "")

if(UXRCE_BUILD_TESTS)
    set(_run_tests ON)
    list(APPEND _test_command COMMAND ${CMAKE_CTEST_COMMAND} -VV -C ${CMAKE_BUILD_TYPE} -T Test)
endif()

if(UXRCE_BUILD_CI_TESTS)
    if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
        list(APPEND _test_command COMMAND ${CMAKE_CTEST_COMMAND} -VV -T MemCheck)
    endif()
endif()

###############################################################################
# Dependencies
###############################################################################
include(ExternalProject)

if(UXRCE_ENABLE_CLIENT)
    ExternalProject_Add(client
        GIT_REPOSITORY
            https://github.com/eProsima/Micro-XRCE-DDS-Client.git
        GIT_TAG
            ${_client_tag}
        PREFIX
            ${PROJECT_BINARY_DIR}/client
        INSTALL_DIR
            ${PROJECT_BINARY_DIR}/temp_install
        TEST_AFTER_INSTALL
            ${_run_tests}
        TEST_COMMAND
            ${_test_command}
        CMAKE_CACHE_ARGS
            -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
            -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
            -DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}
            -DCMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}
            -DCMAKE_EXE_LINKER_FLAGS:STRING=${CMAKE_EXE_LINKER_FLAGS}
            -DCMAKE_SHARED_LINKER_FLAGS:STRING=${CMAKE_SHARED_LINKER_FLAGS}
            -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
            -DCMAKE_PREFIX_PATH:PATH=<INSTALL_DIR>
            -DBIN_INSTALL_DIR:PATH=${BIN_INSTALL_DIR}
            -DINCLUDE_INSTALL_DIR:PATH=${INCLUDE_INSTALL_DIR}
            -DLIB_INSTALL_DIR:PATH=${LIB_INSTALL_DIR}
            -DDATA_INSTALL_DIR:PATH=${DATA_INSTALL_DIR}
            -DUCLIENT_BUILD_EXAMPLES:BOOL=${UXRCE_BUILD_EXAMPLES}
            -DUCLIENT_INSTALL_EXAMPLES:BOOL=${UXRCE_BUILD_EXAMPLES}
            -DUCLIENT_PIC:BOOL=ON
            -DUCLIENT_BUILD_TESTS:BOOL=${UXRCE_BUILD_TESTS}
            -DUCLIENT_ISOLATED_INSTALL:BOOL=OFF
            -DGTEST_INDIVIDUAL:BOOL=ON
            -DUCLIENT_PROFILE_CAN:BOOL=ON
        )
    list(APPEND _deps client)
endif()

if(UXRCE_ENABLE_AGENT)
    ExternalProject_Add(agent
        GIT_REPOSITORY
            https://github.com/eProsima/Micro-XRCE-DDS-Agent.git
        GIT_TAG
            ${_agent_tag}
        PREFIX
            ${PROJECT_BINARY_DIR}/agent
        INSTALL_DIR
            ${PROJECT_BINARY_DIR}/temp_install
        TEST_AFTER_INSTALL
            ${_run_tests}
        TEST_COMMAND
            ${_test_command}
        CMAKE_CACHE_ARGS
            -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
            -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
            -DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}
            -DCMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}
            -DCMAKE_EXE_LINKER_FLAGS:STRING=${CMAKE_EXE_LINKER_FLAGS}
            -DCMAKE_SHARED_LINKER_FLAGS:STRING=${CMAKE_SHARED_LINKER_FLAGS}
            -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
            -DCMAKE_PREFIX_PATH:PATH=<INSTALL_DIR>
            -DBIN_INSTALL_DIR:PATH=${BIN_INSTALL_DIR}
            -DINCLUDE_INSTALL_DIR:PATH=${INCLUDE_INSTALL_DIR}
            -DLIB_INSTALL_DIR:PATH=${LIB_INSTALL_DIR}
            -DDATA_INSTALL_DIR:PATH=${DATA_INSTALL_DIR}
            -DUAGENT_BUILD_TESTS:BOOL=${UXRCE_BUILD_TESTS}
            -DUAGENT_P2P_CLIENT_TAG:STRING=${_client_tag}
            -DUAGENT_P2P_CLIENT_VERSION:STRING=${_client_version}
            -DUAGENT_BUILD_EXECUTABLE:BOOL=${UXRCE_BUILD_AGENT_EXECUTABLE}
            -DUAGENT_ISOLATED_INSTALL:BOOL=OFF
            -DGTEST_INDIVIDUAL:BOOL=ON
        DEPENDS
            client
        )
    list(APPEND _deps agent)
endif()

if(UXRCE_ENABLE_GEN)
    ExternalProject_Add(gen
        GIT_REPOSITORY
            https://github.com/eProsima/Micro-XRCE-DDS-Gen.git
        GIT_TAG
            ${_gen_tag}
        PREFIX
            ${PROJECT_BINARY_DIR}/gen
        INSTALL_DIR
            ${PROJECT_BINARY_DIR}/temp_install
        CONFIGURE_COMMAND
            ""
        BUILD_COMMAND
            cd <SOURCE_DIR> && ./gradlew assemble && ./gradlew test -Dbranch=${_client_tag}
        INSTALL_COMMAND
            COMMAND ${CMAKE_COMMAND} -E make_directory <INSTALL_DIR>/${BIN_INSTALL_DIR}
            COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/scripts/microxrceddsgen <INSTALL_DIR>/${BIN_INSTALL_DIR}/
            COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/scripts/microxrceddsgen.bat <INSTALL_DIR>/${BIN_INSTALL_DIR}/
            COMMAND ${CMAKE_COMMAND} -E make_directory <INSTALL_DIR>/share/microxrcedds
            COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/share/microxrcedds/microxrceddsgen.jar <INSTALL_DIR>/share/microxrcedds/
        )
    list(APPEND _deps gen)
endif()

if(UXRCE_BUILD_TESTS)
    find_package(GTest QUIET)
    find_package(GMock QUIET)
    if(NOT GTest_FOUND OR NOT GMock_FOUND)
        unset(GTEST_ROOT CACHE)
        unset(GMOCK_ROOT CACHE)
        ExternalProject_Add(googletest
            GIT_REPOSITORY
                https://github.com/google/googletest.git
            GIT_TAG
                release-1.11.0
            PREFIX
                ${PROJECT_BINARY_DIR}/googletest
            INSTALL_DIR
                ${PROJECT_BINARY_DIR}/temp_install/googletest
            CMAKE_ARGS
                -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
                $<$<PLATFORM_ID:Windows>:-Dgtest_force_shared_crt:BOOL=ON>
            BUILD_COMMAND
                COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --config Release --target install
                COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --config Debug --target install
            INSTALL_COMMAND
                ""
            )
        list(APPEND _deps googletest)
    endif()

    ExternalProject_Add(itests
        SOURCE_DIR
            ${CMAKE_CURRENT_LIST_DIR}/test
        PREFIX
            ${PROJECT_BINARY_DIR}/itests
        INSTALL_COMMAND
            ""
        TEST_COMMAND
            ${_test_command}
        CMAKE_CACHE_ARGS
            -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
            -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
            -DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}
            -DCMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}
            -DCMAKE_EXE_LINKER_FLAGS:STRING=${CMAKE_EXE_LINKER_FLAGS}
            -DCMAKE_SHARED_LINKER_FLAGS:STRING=${CMAKE_SHARED_LINKER_FLAGS}
            -DCMAKE_PREFIX_PATH:PATH=${PROJECT_BINARY_DIR}/temp_install
            -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
            -DGTEST_INDIVIDUAL:BOOL=ON
            -DGTEST_ROOT:PATH=${PROJECT_BINARY_DIR}/temp_install/googletest
            -DGMOCK_ROOT:PATH=${PROJECT_BINARY_DIR}/temp_install/googletest
        DEPENDS
            ${_deps}
        )
endif()

if(UXRCE_BUILD_PROFILING)
    add_subdirectory(test/profiling)
endif()

###############################################################################
# Install
###############################################################################
if(EXISTS ${CMAKE_BINARY_DIR}/temp_install/)
    install(
        DIRECTORY
            ${CMAKE_BINARY_DIR}/temp_install/
        DESTINATION
            ${CMAKE_INSTALL_PREFIX}
        USE_SOURCE_PERMISSIONS
        )
endif()