cmake_minimum_required(VERSION 3.16)
project(Tahgibu VERSION 2.0.0 LANGUAGES C CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  set(CMAKE_BUILD_TYPE Release CACHE STRING "Tipo de compilación" FORCE)
endif()

option(TAHGIBU_BUILD_APP     "Compilar el editor (requiere raylib)"        ON)
option(TAHGIBU_BUILD_TESTS   "Compilar las pruebas del núcleo"             ON)
option(TAHGIBU_FETCH_RAYLIB  "Descargar y compilar raylib si no se encuentra (requiere red y git)" OFF)

# ---------------------------------------------------------------------------
# Núcleo: modelo de datos del proyecto. NO depende de raylib.
# ---------------------------------------------------------------------------
add_library(tahgibu_core STATIC
  source/core/Frame.cpp
  source/core/Project.cpp
)
target_include_directories(tahgibu_core PUBLIC source)
target_compile_definitions(tahgibu_core PUBLIC TAHGIBU_VERSION="${PROJECT_VERSION}")
if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
  target_compile_options(tahgibu_core PUBLIC -Wall -Wextra)
endif()

# ---------------------------------------------------------------------------
# Lua: solo se detecta. No se enlaza hasta la etapa 10.
# ---------------------------------------------------------------------------
find_package(Lua QUIET)
if(LUA_FOUND)
  message(STATUS "Lua ${LUA_VERSION_STRING} encontrado (se usará a partir de la etapa 10)")
else()
  message(STATUS "Lua no encontrado. No hace falta todavía; será necesario en la etapa 10.")
endif()

# ---------------------------------------------------------------------------
# Editor (raylib)
# ---------------------------------------------------------------------------
if(TAHGIBU_BUILD_APP)
  set(TAHGIBU_RAYLIB_TARGET "")

  find_package(raylib QUIET)
  if(TARGET raylib)
    set(TAHGIBU_RAYLIB_TARGET raylib)
  else()
    find_package(PkgConfig QUIET)
    if(PKG_CONFIG_FOUND)
      pkg_check_modules(RAYLIB QUIET IMPORTED_TARGET raylib)
      if(RAYLIB_FOUND)
        set(TAHGIBU_RAYLIB_TARGET PkgConfig::RAYLIB)
      endif()
    endif()
  endif()

  if(NOT TAHGIBU_RAYLIB_TARGET AND TAHGIBU_FETCH_RAYLIB)
    include(FetchContent)
    set(BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
    FetchContent_Declare(raylib
      GIT_REPOSITORY https://github.com/raysan5/raylib.git
      GIT_TAG 5.0
      GIT_SHALLOW ON)
    FetchContent_MakeAvailable(raylib)
    set(TAHGIBU_RAYLIB_TARGET raylib)
  endif()

  if(NOT TAHGIBU_RAYLIB_TARGET)
    message(FATAL_ERROR
      "No se encontró raylib.\n"
      "Opciones:\n"
      "  1) Instalarla con el gestor de paquetes de tu distribución (ver README.md).\n"
      "  2) Reconfigurar con -DTAHGIBU_FETCH_RAYLIB=ON (descarga y compila raylib).\n"
      "  3) Compilar solo el núcleo y las pruebas con -DTAHGIBU_BUILD_APP=OFF.")
  endif()
  message(STATUS "raylib: ${TAHGIBU_RAYLIB_TARGET}")

  add_executable(tahgibu
    source/main.cpp
    source/ui/Application.cpp
    source/ui/Layout.cpp
  )
  target_link_libraries(tahgibu PRIVATE tahgibu_core ${TAHGIBU_RAYLIB_TARGET})
endif()

# ---------------------------------------------------------------------------
# Pruebas del núcleo (no necesitan raylib ni pantalla)
# ---------------------------------------------------------------------------
if(TAHGIBU_BUILD_TESTS)
  enable_testing()
  add_executable(tahgibu_core_tests tests/core_tests.cpp)
  target_link_libraries(tahgibu_core_tests PRIVATE tahgibu_core)
  add_test(NAME core COMMAND tahgibu_core_tests)
endif()