cmake_minimum_required(VERSION 3.16)

project(
    TDengine
    VERSION 3.0
    DESCRIPTION "An open-source big data platform designed and optimized for the Internet of Things(IOT)"
)

# ============================================================================
# DEPENDENCIES
# ============================================================================
set(CMAKE_SUPPORT_DIR "${CMAKE_SOURCE_DIR}/cmake")
include(${CMAKE_SUPPORT_DIR}/cmake.options)

function(cat IN_FILE OUT_FILE)
    file(READ ${IN_FILE} CONTENTS)
    file(APPEND ${OUT_FILE} "${CONTENTS}")
endfunction(cat IN_FILE OUT_FILE)

set(DEPS_TMP_FILE "${CMAKE_BINARY_DIR}/deps_tmp_CMakeLists.txt.in")
configure_file("${CMAKE_SUPPORT_DIR}/deps_CMakeLists.txt.in" ${DEPS_TMP_FILE})

## googletest
if(${BUILD_TEST})
    cat("${CMAKE_SUPPORT_DIR}/gtest_CMakeLists.txt.in" ${DEPS_TMP_FILE})
endif(${BUILD_TEST})

## lz4
cat("${CMAKE_SUPPORT_DIR}/lz4_CMakeLists.txt.in" ${DEPS_TMP_FILE})

## zlib
cat("${CMAKE_SUPPORT_DIR}/zlib_CMakeLists.txt.in" ${DEPS_TMP_FILE})

## cJson
cat("${CMAKE_SUPPORT_DIR}/cjson_CMakeLists.txt.in" ${DEPS_TMP_FILE})

## leveldb
if(${BUILD_WITH_LEVELDB})
    cat("${CMAKE_SUPPORT_DIR}/leveldb_CMakeLists.txt.in" ${DEPS_TMP_FILE})
endif(${BUILD_WITH_LEVELDB})

## rocksdb
if(${BUILD_WITH_ROCKSDB})
    cat("${CMAKE_SUPPORT_DIR}/rocksdb_CMakeLists.txt.in" ${DEPS_TMP_FILE})
    add_definitions(-DUSE_ROCKSDB)
endif(${BUILD_WITH_ROCKSDB})

## lucene
if(${BUILD_WITH_LUCENE})
    cat("${CMAKE_SUPPORT_DIR}/lucene_CMakeLists.txt.in" ${DEPS_TMP_FILE})
endif(${BUILD_WITH_LUCENE})

## NuRaft
if(${BUILD_WITH_NURAFT})
    cat("${CMAKE_SUPPORT_DIR}/nuraft_CMakeLists.txt.in" ${DEPS_TMP_FILE})
endif(${BUILD_WITH_NURAFT})

## download dependencies
configure_file(${DEPS_TMP_FILE} "${CMAKE_SOURCE_DIR}/deps/deps-download/CMakeLists.txt")
execute_process(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/deps/deps-download")
execute_process(COMMAND "${CMAKE_COMMAND}" --build .
        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/deps/deps-download")

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC -gdwarf-2 -msse4.2 -mfma")

# deps
add_subdirectory(deps)

# api
add_library(api INTERFACE)
target_include_directories(api INTERFACE "include/client")

# src
add_subdirectory(source)

# docs
if(${BUILD_DOCS})
    find_program(DOC_GENERATOR doxygen)
    if(NOT DOC_GENERATOR)
        message("doxygen is not found, skip doc build")
    else()
        execute_process(
            COMMAND doxygen ${CMAKE_SOURCE_DIR}/docs/Doxyfile
            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        )
    endif(NOT DOC_GENERATOR)
endif(${BUILD_DOCS})

# tests (TODO)