# ==============================================================================
# Find imnodes
# ==============================================================================
# Builds imnodes from the bundled sources in deps/imnodes/.
#
# Targets provided:
#   imnodes::imnodes - The imnodes library target
#
# Variables set:
#   imnodes_FOUND       - TRUE if imnodes is available
#   imnodes_LIBRARIES   - The imnodes library target (imnodes::imnodes)
#   imnodes_INCLUDE_DIR - Include directories for imnodes
# ==============================================================================

if (DEFINED _FINDIMNODES_INCLUDED)
    return()
endif()
set(_FINDIMNODES_INCLUDED TRUE)

set(_imnodes_source_dir "${CMAKE_CURRENT_LIST_DIR}/imnodes")

if (NOT EXISTS "${_imnodes_source_dir}/imnodes.cpp")
    message(FATAL_ERROR "imnodes sources not found at '${_imnodes_source_dir}'")
endif()

if (NOT TARGET imgui::imgui)
    message(FATAL_ERROR "imnodes requires imgui::imgui to be available before find_package(imnodes)")
endif()

add_subdirectory("${_imnodes_source_dir}" "${CMAKE_BINARY_DIR}/_deps/imnodes-build" EXCLUDE_FROM_ALL)

if (NOT TARGET imnodes::imnodes)
    message(FATAL_ERROR "imnodes: target imnodes::imnodes was not created")
endif()

set(imnodes_FOUND      TRUE)
set(imnodes_LIBRARIES  imnodes::imnodes)
get_target_property(_imnodes_inc imnodes INTERFACE_INCLUDE_DIRECTORIES)
set(imnodes_INCLUDE_DIR "${_imnodes_inc}")

if (_imnodes_inc AND TARGET imnodes)
    set_target_properties(imnodes PROPERTIES
        INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${_imnodes_inc}"
    )
endif()

set(IMNODES_LICENSE_FILE "${_imnodes_source_dir}/LICENSE.md" CACHE FILEPATH "Path to imnodes license file")