cmake_minimum_required(VERSION 3.10)

# 1. Define the Version Bumper Target
# This target is like a "recipe" that isn't cooked until we ask for it.
add_custom_target(BumpVersion
        COMMAND python3 ${CMAKE_CURRENT_SOURCE_DIR}/bump_version.py
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
        COMMENT "Bumping version in version.txt..."
)

# 2. Read the version for the Project metadata
# This still happens during "Reload" so CMake knows the project version.
file(READ "${CMAKE_CURRENT_SOURCE_DIR}/version.txt" RAW_VERSION)
string(STRIP "${RAW_VERSION}" DIXON_VERSION_FROM_FILE)

message(STATUS "Dixon Version detected from file: ${DIXON_VERSION_FROM_FILE}")

# Use that variable in your project definition
project(Dixon VERSION ${DIXON_VERSION_FROM_FILE} LANGUAGES CXX)

# Forces the compiler to use C++20 features
set(CMAKE_CXX_STANDARD 20)

# Define the executable and its source files
add_executable(dixon
        main.cpp
        DixonNodeState.cpp
        DixonNodeState.h
        DixonBrain.cpp
        DixonBrain.h
        CardioCenter/Heart.cpp
        CardioCenter/Heart.h)

# 3. Create the Dependency
# This tells CMake: "Before you build Dixon, you MUST run BumpVersion."
add_dependencies(dixon BumpVersion)

# Generate the header from the template
configure_file(Version.h.in "${CMAKE_CURRENT_BINARY_DIR}/Version.h")

# Consolidated Include Paths
target_include_directories(dixon PRIVATE
        "${CMAKE_CURRENT_BINARY_DIR}"                           # For generated Version.h
        "${CMAKE_CURRENT_SOURCE_DIR}/extern/libgpiod/include"  # For libgpiod headers
)

# Link the gpiod libraries
target_link_libraries(dixon PRIVATE
        "${CMAKE_CURRENT_SOURCE_DIR}/extern/libgpiod/aarch64/libgpiodcxx.so.2"
        "${CMAKE_CURRENT_SOURCE_DIR}/extern/libgpiod/aarch64/libgpiod.so.3")

# Tell the linker: "Trust me, the Pi has the rest of the C++ and C libraries"
target_link_options(dixon PRIVATE "-Wl,--allow-shlib-undefined")