cmake_minimum_required(VERSION 3.10)
project(simulator_SIC_XE VERSION 1.0 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Put all build outputs under target/bin as requested
set(OUTPUT_DIR ${CMAKE_SOURCE_DIR}/target/bin)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${OUTPUT_DIR})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_DIR})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${OUTPUT_DIR})

# Collect all .cpp sources under src/
file(GLOB_RECURSE SOURCES "${PROJECT_SOURCE_DIR}/src/*.cpp")

if(NOT SOURCES)
  message(WARNING "No source files found in ${PROJECT_SOURCE_DIR}/src — the build will create an empty library")
endif()

# Build a static library from all sources
add_library(simulator_lib STATIC ${SOURCES})
target_include_directories(simulator_lib PUBLIC ${PROJECT_SOURCE_DIR}/include)
set_target_properties(simulator_lib PROPERTIES OUTPUT_NAME "simulator")

# If a main.cpp exists, create an executable that links the library.
if(EXISTS "${PROJECT_SOURCE_DIR}/src/main.cpp")
  add_executable(simulator_exec "${PROJECT_SOURCE_DIR}/src/main.cpp")
  target_link_libraries(simulator_exec PRIVATE simulator_lib)
endif()

# Convenience target: `cmake --build build --target run`
# This target will build `simulator_exec` (if present) and then execute it.
if(TARGET simulator_exec)
  add_custom_target(run
    DEPENDS simulator_exec
    COMMAND ${CMAKE_COMMAND} -E echo "Running simulator_exec..."
    COMMAND $<TARGET_FILE:simulator_exec>
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    COMMENT "Builds and runs simulator_exec"
  )
endif()

message(STATUS "Project: ${PROJECT_NAME}")
message(STATUS "Sources found: ${SOURCES}")
message(STATUS "Output directory: ${OUTPUT_DIR}")