cmake_minimum_required(VERSION 3.16)
project(grx_client CXX)
set(CMAKE_CXX_STANDARD 17)

# Find gRPC and Protobuf
find_package(Protobuf REQUIRED)
find_package(gRPC CONFIG REQUIRED)

# Find the protoc and grpc_cpp_plugin executables
find_program(PROTOC protoc)
find_program(GRPC_CPP_PLUGIN grpc_cpp_plugin)

# Proto files to compile
set(PROTO_DIR "${CMAKE_SOURCE_DIR}/proto")
set(PROTO_FILES
    Common.proto
    Receiverd.proto
    Monitord.proto
    Spectrumd.proto
    Samplestreamingd.proto
    TunableChanneld.proto
)

# Output directory for generated files
set(GENERATED_DIR "${CMAKE_BINARY_DIR}/generated")
file(MAKE_DIRECTORY ${GENERATED_DIR})

# Generate C++ sources from .proto files
set(PROTO_SRCS "")
set(PROTO_HDRS "")
foreach(PROTO_FILE ${PROTO_FILES})
    get_filename_component(PROTO_NAME ${PROTO_FILE} NAME_WE)
    set(PB_SRC "${GENERATED_DIR}/${PROTO_NAME}.pb.cc")
    set(PB_HDR "${GENERATED_DIR}/${PROTO_NAME}.pb.h")
    set(GRPC_SRC "${GENERATED_DIR}/${PROTO_NAME}.grpc.pb.cc")
    set(GRPC_HDR "${GENERATED_DIR}/${PROTO_NAME}.grpc.pb.h")

    add_custom_command(
        OUTPUT ${PB_SRC} ${PB_HDR} ${GRPC_SRC} ${GRPC_HDR}
        COMMAND ${PROTOC}
            --proto_path=${PROTO_DIR}
            --cpp_out=${GENERATED_DIR}
            --grpc_out=${GENERATED_DIR}
            --plugin=protoc-gen-grpc=${GRPC_CPP_PLUGIN}
            ${PROTO_DIR}/${PROTO_FILE}
        DEPENDS ${PROTO_DIR}/${PROTO_FILE}
        COMMENT "Generating C++ sources for ${PROTO_FILE}"
    )

    list(APPEND PROTO_SRCS ${PB_SRC} ${GRPC_SRC})
    list(APPEND PROTO_HDRS ${PB_HDR} ${GRPC_HDR})
endforeach()

# Build the example executables
add_executable(tracked_aircraft
    tracked_aircraft.cpp
    ${PROTO_SRCS}
)
target_include_directories(tracked_aircraft PRIVATE ${GENERATED_DIR})
target_link_libraries(tracked_aircraft PRIVATE
    gRPC::grpc++
    protobuf::libprotobuf
)

add_executable(modes_downlink
    modes_downlink.cpp
    ${PROTO_SRCS}
)
target_include_directories(modes_downlink PRIVATE ${GENERATED_DIR})
target_link_libraries(modes_downlink PRIVATE
    gRPC::grpc++
    protobuf::libprotobuf
)