# Require a modern version of CMake
cmake_minimum_required(VERSION 3.15)

# Define the workspace/project
project(SakuraVNE LANGUAGES CXX)

# Enforce C++20 globally
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF) # Disables compiler-specific extensions (like gnu++20)

# ------------------------------------------------------------------------------
# Output Directory Configuration (Mirrors your Premake setup)
# ------------------------------------------------------------------------------
# This mimics: build/bin/{Config}-{System}-{Architecture}
set(OUTPUT_DIR_SUFFIX "$<CONFIG>-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/${OUTPUT_DIR_SUFFIX}")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/${OUTPUT_DIR_SUFFIX}")
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/${OUTPUT_DIR_SUFFIX}")

# ------------------------------------------------------------------------------
# Dependencies
# ------------------------------------------------------------------------------

# 1. SDL3
# Disable tests and examples before adding the subdirectory
set(SDL_TESTS OFF CACHE BOOL "Disable SDL3 tests" FORCE)
set(SDL_EXAMPLES OFF CACHE BOOL "Disable SDL3 examples" FORCE)
add_subdirectory(libs/sdl3)

# 2. spdlog
# Force compiled mode instead of header-only, and disable extras
set(SPDLOG_BUILD_COMPILED ON CACHE BOOL "Build spdlog as a compiled library" FORCE)
set(SPDLOG_BUILD_EXAMPLE OFF CACHE BOOL "Disable spdlog examples" FORCE)
set(SPDLOG_BUILD_TESTS OFF CACHE BOOL "Disable spdlog tests" FORCE)
add_subdirectory(libs/spdlog)

# 3. ImGui & ImGui Node Editor
# Assuming you have CMakeLists.txt inside these directories.
# If you don't, you would use add_library() to compile their .cpp files manually here.
add_subdirectory(libs/imgui)
add_subdirectory(libs/imgui-node-editor)

# ------------------------------------------------------------------------------
# SakuraVNE Executable Target
# ------------------------------------------------------------------------------

# Gather all .cpp and .h files in the src folder
file(GLOB_RECURSE SAKURA_SRCS "SakuraVNE/src/*.cpp" "SakuraVNE/src/*.h")

# Create the ConsoleApp executable
add_executable(SakuraVNE ${SAKURA_SRCS})

# ------------------------------------------------------------------------------
# Include Directories & Linking
# ------------------------------------------------------------------------------

# Tell the compiler where the headers are
target_include_directories(SakuraVNE PRIVATE
    "SakuraVNE/src"
    "libs/spdlog/include"
    "libs/imgui"
    "libs/imgui/misc"
    "libs/imgui/backends"
    "libs/imgui-node-editor"
    "libs/sdl3/include"
)

# Link the libraries. CMake handles all the libdirs automatically!
target_link_libraries(SakuraVNE PRIVATE
    ImGui               # (Depends on what your ImGui target is actually named)
    ImGuiNodeEditor     # (Depends on what your ImGuiNodeEditor target is actually named)
    SDL3::SDL3          # The official SDL3 target name
    spdlog::spdlog      # The official spdlog target name
)

# ------------------------------------------------------------------------------
# Platform & Configuration Filters
# ------------------------------------------------------------------------------

# Windows-specific settings
if(WIN32)
    target_compile_definitions(SakuraVNE PRIVATE PLATFORM_WINDOWS)
    
    # Ignore MSVCRT default library
    target_link_options(SakuraVNE PRIVATE "/NODEFAULTLIB:MSVCRT")

# Linux-specific settings
elseif(UNIX AND NOT APPLE)
    target_compile_definitions(SakuraVNE PRIVATE PLATFORM_LINUX)
    
    # Link dl and pthread
    target_link_libraries(SakuraVNE PRIVATE dl pthread)
endif()

# Debug vs Release definitions
# $<CONFIG:...> is a generator expression that injects the flag based on the active build type
target_compile_definitions(SakuraVNE PRIVATE
    $<$<CONFIG:Debug>:DEBUG>
    $<$<CONFIG:Release>:RELEASE>
)