cmake_minimum_required(VERSION 3.20)
project(lumacs VERSION 0.1.0 LANGUAGES CXX)

# C++20 standard
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

# Export compile commands for clangd/LSP
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# Build type
if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE Release)
endif()

# Compiler warnings
if(MSVC)
    add_compile_options(/W4 /WX)
else()
    add_compile_options(-Wall -Wextra -Wpedantic -Werror)
endif()

# Dependencies
include(FetchContent)

# FTXUI for TUI
FetchContent_Declare(
    ftxui
    GIT_REPOSITORY https://github.com/ArthurSonzogni/FTXUI.git
    GIT_TAG v5.0.0
)
set(FTXUI_BUILD_DOCS OFF CACHE BOOL "" FORCE)
set(FTXUI_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
set(FTXUI_ENABLE_INSTALL OFF CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(ftxui)

# Lua and sol2
find_package(Lua 5.4 REQUIRED)

# sol2 - use develop branch for latest compatibility fixes
FetchContent_Declare(
    sol2
    GIT_REPOSITORY https://github.com/ThePhD/sol2.git
    GIT_TAG develop
    GIT_SHALLOW TRUE
)
FetchContent_MakeAvailable(sol2)

# Core library (UI-independent)
add_library(lumacs_core STATIC
    src/buffer.cpp
    src/window.cpp
    src/editor_core.cpp
    src/lua_api.cpp
)

target_include_directories(lumacs_core PUBLIC
    ${CMAKE_CURRENT_SOURCE_DIR}/include
    ${LUA_INCLUDE_DIR}
)

target_link_libraries(lumacs_core PUBLIC
    sol2::sol2
    ${LUA_LIBRARIES}
)

# TUI executable (FTXUI-based)
add_executable(lumacs
    src/main.cpp
)

target_link_libraries(lumacs PRIVATE
    lumacs_core
    ftxui::screen
    ftxui::dom
    ftxui::component
)

# Enable testing
enable_testing()
add_subdirectory(tests EXCLUDE_FROM_ALL)