cmake_minimum_required(VERSION 3.20)
project(effector VERSION 0.5.1 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
endif()

set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG")

find_package(PkgConfig REQUIRED)
pkg_check_modules(GTKMM REQUIRED IMPORTED_TARGET gtkmm-4.0)
pkg_check_modules(GDKPIXBUF REQUIRED IMPORTED_TARGET gdk-pixbuf-2.0)
# Pango and Cairo draw the text effect's glyphs. Neither needs a display, so
# the core stays headless.
pkg_check_modules(PANGOCAIRO REQUIRED IMPORTED_TARGET pangocairo)

find_package(Threads REQUIRED)

# --- version: the one number, and the changelog that goes with it ------------
# The version is the project() line above; each release is a vX.Y.Z tag on the
# commit that set it. CHANGELOG.md is baked in so the interface can show it,
# and editing it re-runs the configure step.
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/CHANGELOG.md EFFECTOR_CHANGELOG)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS CHANGELOG.md)
configure_file(src/core/version.hpp.in ${CMAKE_CURRENT_BINARY_DIR}/generated/core/version.hpp @ONLY)

# --- core: effects and image handling, no GUI ---------------------------------
add_library(effector_core STATIC
    src/core/canvas.cpp
    src/core/chain.cpp
    src/core/effect.cpp
    src/core/image.cpp
    src/core/params.cpp
    src/core/project.cpp
    src/core/registry.cpp
    src/core/rng.cpp
    src/core/style.cpp
    src/effects/bitcrush.cpp
    src/effects/blur.cpp
    src/effects/channelsplit.cpp
    src/effects/corrupt.cpp
    src/effects/feedback.cpp
    src/effects/grain.cpp
    src/effects/monochrome.cpp
    src/effects/overlay.cpp
    src/effects/pixelsort.cpp
    src/effects/scanlines.cpp
    src/effects/shatter.cpp
    src/effects/slitshift.cpp
    src/effects/text.cpp
    src/effects/tiles.cpp
    src/effects/warp.cpp
)
target_include_directories(effector_core PUBLIC src ${CMAKE_CURRENT_BINARY_DIR}/generated)
# The core is GUI-free: it only needs gdk-pixbuf for decoding and encoding,
# so headless rendering works without a display.
target_link_libraries(effector_core PUBLIC PkgConfig::GDKPIXBUF PkgConfig::PANGOCAIRO Threads::Threads)
target_compile_options(effector_core PRIVATE -Wall -Wextra -Wpedantic)

# --- interface: the GTK window, split out so the GUI tests can link it --------
add_library(effector_gui STATIC
    src/cli/options.cpp
    src/gui/app.cpp
    src/gui/window.cpp
)
target_link_libraries(effector_gui PUBLIC effector_core PkgConfig::GTKMM)
target_compile_options(effector_gui PRIVATE -Wall -Wextra -Wpedantic)

# --- application --------------------------------------------------------------
add_executable(effector src/main.cpp)
target_link_libraries(effector PRIVATE effector_gui)
target_compile_options(effector PRIVATE -Wall -Wextra -Wpedantic)

install(TARGETS effector RUNTIME DESTINATION bin)
# The launcher entry, so the interface shows up in the desktop's app menu.
install(FILES data/org.effector.Effector.desktop DESTINATION share/applications)

# --- tests --------------------------------------------------------------------
include(CTest)
if(BUILD_TESTING)
    add_subdirectory(tests)
endif()