cmake_minimum_required(VERSION 3.10)
project(devGrpcClient VERSION 1.0.0 LANGUAGES CXX)

# 设置编译选项
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
add_compile_options(-fPIC -g -Wall -march=armv8-a)

# 目标目录
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
get_filename_component(DELIVER_DIR "${CMAKE_BINARY_DIR}/../../Deliver" ABSOLUTE)
file(MAKE_DIRECTORY "${DELIVER_DIR}/lib" "${DELIVER_DIR}/include")

# ========== 静态依赖 gRPC 1.30.2 相关库 ==========
# 1. 库路径（指定编译的静态库）
set(GRPC_ROOT "/usr/local/grpc-1.30.2")
set(ABSEIL_ROOT "/usr/local/abseil-20210324.2")

# 2. 头文件目录
include_directories(
  ${GRPC_ROOT}/include  # gRPC头文件
  ${ABSEIL_ROOT}/include  # Abseil头文件
  ${CMAKE_CURRENT_SOURCE_DIR}/src
  ${CMAKE_CURRENT_BINARY_DIR}
)

# 3. 库文件目录
link_directories(
  ${GRPC_ROOT}/lib  # gRPC库文件
  ${ABSEIL_ROOT}/lib  # Abseil库文件
)

# 4. gRPC静态库列表（.a文件）
set(GRPC_STATIC_LIBS
  grpc++_reflection
  grpc++
  grpc
  gpr
  address_sorting
)

# 5. Abseil静态库列表（.a文件）
set(ABSEIL_STATIC_LIBS
  absl_base
  absl_strings
  absl_synchronization
  absl_time
  absl_bad_optional_access
  absl_str_format_internal
  absl_int128
  absl_raw_logging_internal
  absl_spinlock_wait
  absl_throw_delegate
  absl_malloc_internal
)

# ========== gRPC代码生成器（1.30.2版本的编译器） ==========
set(_GRPC_CPP_PLUGIN_EXECUTABLE "${GRPC_ROOT}/bin/grpc_cpp_plugin")
if(NOT EXISTS "${_GRPC_CPP_PLUGIN_EXECUTABLE}")
  message(FATAL_ERROR "未找到gRPC 1.30.2编译器: ${_GRPC_CPP_PLUGIN_EXECUTABLE}")
else()
  message(STATUS "找到gRPC 1.30.2编译器: ${_GRPC_CPP_PLUGIN_EXECUTABLE}")
endif()

# ========== Protobuf配置（系统静态库） ==========
find_package(Protobuf REQUIRED)
message(STATUS "使用系统Protobuf版本: ${Protobuf_VERSION}")

# ========== 编译Proto文件（与1.30.2版本保持兼容） ==========
get_filename_component(DEV_PROTO "${CMAKE_CURRENT_SOURCE_DIR}/protos/device-sm.proto" ABSOLUTE)
get_filename_component(DEV_PROTO_DIR "${DEV_PROTO}" PATH)

set(DEV_PROTO_SRC "${CMAKE_CURRENT_BINARY_DIR}/device-sm.pb.cc")
set(DEV_PROTO_HDR "${CMAKE_CURRENT_BINARY_DIR}/device-sm.pb.h")
set(DEV_GRPC_SRC "${CMAKE_CURRENT_BINARY_DIR}/device-sm.grpc.pb.cc")
set(DEV_GRPC_HDR "${CMAKE_CURRENT_BINARY_DIR}/device-sm.grpc.pb.h")

add_custom_command(
  OUTPUT "${DEV_PROTO_SRC}" "${DEV_PROTO_HDR}" "${DEV_GRPC_SRC}" "${DEV_GRPC_HDR}"
  COMMAND $<TARGET_FILE:protobuf::protoc>
  ARGS 
    --grpc_out="${CMAKE_CURRENT_BINARY_DIR}"
    --cpp_out="${CMAKE_CURRENT_BINARY_DIR}"
    -I "${DEV_PROTO_DIR}"
    --plugin=protoc-gen-grpc="${_GRPC_CPP_PLUGIN_EXECUTABLE}"
    "${DEV_PROTO}"
  DEPENDS "${DEV_PROTO}"
  COMMENT "生成基于gRPC 1.30.2的proto代码"
)

add_custom_target(GenerateProto ALL
  DEPENDS "${DEV_PROTO_SRC}" "${DEV_PROTO_HDR}" "${DEV_GRPC_SRC}" "${DEV_GRPC_HDR}"
)

# ========== 编译动态库（依赖静态gRPC和Abseil） ==========
set(SRC_FILES
  ${CMAKE_CURRENT_SOURCE_DIR}/src/devGrpcClient.cpp
  ${DEV_PROTO_SRC}
  ${DEV_GRPC_SRC}
)

add_library(devGrpcClient SHARED ${SRC_FILES})
add_dependencies(devGrpcClient GenerateProto)

set_target_properties(devGrpcClient PROPERTIES
  VERSION ${PROJECT_VERSION}
  SOVERSION 1
  OUTPUT_NAME "devGrpcClient"
)

# 链接依赖库（静态库+系统库）
target_link_libraries(devGrpcClient PRIVATE
  ${GRPC_STATIC_LIBS}
  ${ABSEIL_STATIC_LIBS}
  protobuf::libprotobuf  # 系统Protobuf静态库
  pthread dl z ssl crypto  # 系统基础库
)

# ========== 输出到交付目录 ==========
add_custom_command(TARGET devGrpcClient POST_BUILD
  COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:devGrpcClient>" "${DELIVER_DIR}/lib/"
  COMMAND ${CMAKE_COMMAND} -E create_symlink "$<TARGET_FILE_NAME:devGrpcClient>" "${DELIVER_DIR}/lib/$<TARGET_SONAME_FILE_NAME:devGrpcClient>"
  COMMAND ${CMAKE_COMMAND} -E create_symlink "$<TARGET_SONAME_FILE_NAME:devGrpcClient>" "${DELIVER_DIR}/lib/$<TARGET_LINKER_FILE_NAME:devGrpcClient>"
  COMMAND ${CMAKE_COMMAND} -E copy_if_different "${CMAKE_CURRENT_SOURCE_DIR}/src/devGrpcClient.h" "${DELIVER_DIR}/include/"
)