cmake_minimum_required(VERSION 3.22)

# High-level configuration
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

option(USE_CCACHE "Enable compiler caching via ccache" OFF)
if (USE_CCACHE)
    find_program(CCACHE_PROGRAM ccache)
    if (CCACHE_PROGRAM)
        set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
        set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
    endif()
endif()

include(version.cmake)
if (DEFINED JAS_PATCH_INDEX)
    set(APP_VERSION "${APP_VERSION}.${JAS_PATCH_INDEX}")
endif()
project(JUST_A_SAMPLE VERSION ${APP_VERSION})

set(FETCHCONTENT_BASE_DIR ${CMAKE_SOURCE_DIR}/.deps CACHE PATH "")
set(FETCHCONTENT_UPDATES_DISCONNECTED ON)
include(FetchContent)

# Generate BuildInfo.h at build time so the timestamp reflects the actual build
set(BUILD_INFO_HEADER "${CMAKE_BINARY_DIR}/BuildInfo.h")

# Custom command with OUTPUT for proper dependency tracking
add_custom_command(OUTPUT "${BUILD_INFO_HEADER}"
    COMMAND ${CMAKE_COMMAND} -DSOURCE_DIR=${CMAKE_SOURCE_DIR} -DOUTPUT_FILE=${BUILD_INFO_HEADER}
        -P ${CMAKE_SOURCE_DIR}/CMake/generate_build_info.cmake
    DEPENDS ${CMAKE_SOURCE_DIR}/CMake/generate_build_info.cmake
)

# Phony target that always runs, forcing the custom command to re-execute
add_custom_target(RegenerateBuildInfo
    COMMAND ${CMAKE_COMMAND} -DSOURCE_DIR=${CMAKE_SOURCE_DIR} -DOUTPUT_FILE=${BUILD_INFO_HEADER}
        -P ${CMAKE_SOURCE_DIR}/CMake/generate_build_info.cmake
)

# GenerateBuildInfo depends on the header, which triggers the custom command.
# RegenerateBuildInfo forces a fresh timestamp on every build.
add_custom_target(GenerateBuildInfo ALL DEPENDS "${BUILD_INFO_HEADER}")
add_dependencies(GenerateBuildInfo RegenerateBuildInfo)

# Dependency versions
set(JUCE_VERSION 8.0.12)
set(BUNGEE_INSTALL_VERSION v2.4.10)
set(MELATONIN_BLUR_VERSION origin/main)
set(MELATONIN_INSPECTOR_VERSION origin/main)
set(LEAF_VERSION 8d86c4e96ac48740da34f24c9f995bc3c4b3b2a0)

# JAS build options
option(JAS_DARKMODE_DEFAULT "Set the default theme to dark mode" ON)
option(JAS_VST3_REAPER_INTEGRATION "Enable Reaper-specific VST3 extensions (Windows only)" OFF)
option(JAS_FAST_MATH "Enable fast-math in Release" ON)
option(JAS_ENABLE_AVX2 "Enable AVX2/FMA SIMD in Release" ON)

if (JAS_ENABLE_AVX2 AND APPLE AND "arm64" IN_LIST CMAKE_OSX_ARCHITECTURES AND "x86_64" IN_LIST CMAKE_OSX_ARCHITECTURES)
    message(WARNING "AVX2 is not compatible with universal builds on macOS. Disabling JAS_ENABLE_AVX2.")
    set(JAS_ENABLE_AVX2 OFF)
endif()

if (JAS_VST3_REAPER_INTEGRATION AND NOT WIN32)
    set(JUCE_VST3_REAPER_INTEGRATION OFF)
endif()

# Bungee build options
set(BUNGEE_BUILD_SHARED_LIBRARY OFF CACHE INTERNAL "")
set(STRETCHER_BUNGEE_MAX_OCTAVES 4)

# Paths to patch files (careful editing these, the whitespace is important for unified diffs to work correctly)
set(BUNGEE_PATCH_FILE ${CMAKE_CURRENT_SOURCE_DIR}/Patches/bungee_lower_cmake_and_set_num_octaves.patch CACHE INTERNAL "")
set(LEAF_PATCH_FILE ${CMAKE_CURRENT_SOURCE_DIR}/Patches/leaf_more_selective_imports.patch CACHE INTERNAL "")

# Fetch dependencies
FetchContent_Declare(
        JUCE
        GIT_REPOSITORY  https://github.com/juce-framework/JUCE.git
        GIT_TAG         ${JUCE_VERSION}
        SOURCE_DIR      ${FETCHCONTENT_BASE_DIR}/JUCE
)

FetchContent_Declare(
        bungee
        GIT_REPOSITORY  https://github.com/bungee-audio-stretch/bungee.git
        GIT_TAG         ${BUNGEE_INSTALL_VERSION}
        SOURCE_DIR      ${FETCHCONTENT_BASE_DIR}/bungee
        # We patch in our own maxPitchOctaves constant and lower the overly restrictive CMake version requirement
        PATCH_COMMAND ${CMAKE_COMMAND} -DREPO_DIR=<SOURCE_DIR> -DPATCH_FILE=${BUNGEE_PATCH_FILE}
            -DNAME=bungee -P ${CMAKE_SOURCE_DIR}/Patches/apply_patch_if_needed.cmake
)

FetchContent_Declare(
        melatonin_blur
        GIT_REPOSITORY  https://github.com/sudara/melatonin_blur.git
        GIT_TAG         ${MELATONIN_BLUR_VERSION}
        SOURCE_DIR      ${FETCHCONTENT_BASE_DIR}/melatonin_blur
)

FetchContent_Declare(
        melatonin_inspector
        GIT_REPOSITORY  https://github.com/sudara/melatonin_inspector.git
        GIT_TAG         ${MELATONIN_INSPECTOR_VERSION}
        SOURCE_DIR      ${FETCHCONTENT_BASE_DIR}/melatonin_inspector
)

FetchContent_Declare(
        LEAF
        GIT_REPOSITORY  https://github.com/spiricom/LEAF.git
        GIT_TAG         ${LEAF_VERSION}
        SOURCE_DIR      ${FETCHCONTENT_BASE_DIR}/LEAF
        # We patch leaf-config.h to allow including only the headers we need
        # This patch is quite brittle and will likely fail on newer commits, but the pitch detection algorithm is stable
        PATCH_COMMAND ${CMAKE_COMMAND} -DREPO_DIR=<SOURCE_DIR> -DPATCH_FILE=${LEAF_PATCH_FILE}
            -DNAME=LEAF -P ${CMAKE_SOURCE_DIR}/Patches/apply_patch_if_needed.cmake
)

FetchContent_MakeAvailable(JUCE)
FetchContent_MakeAvailable(bungee)
FetchContent_MakeAvailable(melatonin_blur)
FetchContent_MakeAvailable(melatonin_inspector)
FetchContent_MakeAvailable(LEAF)

# Bungee
set_target_properties(bungee_executable PROPERTIES EXCLUDE_FROM_ALL TRUE)
target_compile_definitions(bungee_library PRIVATE BUNGEE_MAX_OCTAVES=${STRETCHER_BUNGEE_MAX_OCTAVES})

# LEAF
set_source_files_properties(
        ${leaf_SOURCE_DIR}/leaf/Src/leaf.c
        ${leaf_SOURCE_DIR}/leaf/Src/leaf-analysis.c
        ${leaf_SOURCE_DIR}/leaf/Src/leaf-mempool.c
        PROPERTIES LANGUAGE CXX  # LEAF uses some bad semantics that trip up the linker on GCC
)

add_library(leaf STATIC
        ${leaf_SOURCE_DIR}/leaf/Externals/d_fft_mayer.c
        ${leaf_SOURCE_DIR}/leaf/Src/leaf.c
        ${leaf_SOURCE_DIR}/leaf/Src/leaf-analysis.c
        ${leaf_SOURCE_DIR}/leaf/Src/leaf-mempool.c
)

target_include_directories(leaf SYSTEM PUBLIC
        ${leaf_SOURCE_DIR}/leaf
        ${leaf_SOURCE_DIR}/leaf/Inc
)

target_compile_options(leaf PRIVATE
        $<$<C_COMPILER_ID:MSVC>:/W0>
        $<$<C_COMPILER_ID:GNU,Clang>:-w>
)

# External
add_library(external_deps STATIC
        External/MTS/libMTSClient.cpp
)

target_include_directories(external_deps SYSTEM PUBLIC
        External/MTS
        External/reaper-plugins
        External/Gin
        External/readerwriterqueue
)

target_compile_options(external_deps PRIVATE
        $<$<C_COMPILER_ID:MSVC>:/W0>
        $<$<C_COMPILER_ID:GNU,Clang>:-w>
)

# Just a Sample plugin
juce_add_plugin(JustASample
        PRODUCT_NAME                "Just a Sample"
        DESCRIPTION                 "Just a Sample is a modern, open-source audio sampler"
        ICON_BIG                    "Assets/Icons/IconLogo.svg"
        ICON_SMALL                  "Assets/Icons/IconLogo.svg"
        COMPANY_NAME                "Just a Sample"
        COMPANY_COPYRIGHT           "(c) 2026 B. Friedman & A. Jenewein"
        COMPANY_WEBSITE             "https://codeberg.org/armin/justasample"
        BUNDLE_ID                   org.justasample.JustASample
        PLUGIN_MANUFACTURER_CODE    Manu
        PLUGIN_CODE                 Bpf2
        FORMATS                     AU VST3
        VST3_CATEGORIES             Sampler
        IS_SYNTH                    TRUE
        NEEDS_MIDI_INPUT            TRUE
        EDITOR_WANTS_KEYBOARD_FOCUS FALSE
)

juce_generate_juce_header(JustASample)

target_sources(JustASample PRIVATE
        Source/CustomLookAndFeel.cpp
        Source/CustomLookAndFeel.h
        Source/PluginEditor.cpp
        Source/PluginEditor.h
        Source/PluginParameters.h
        Source/PluginProcessor.cpp
        Source/PluginProcessor.h
        Source/Components/Buttons.h
        Source/Components/FxChain.cpp
        Source/Components/FxChain.h
        Source/Components/FxDragTarget.h
        Source/Components/FxModule.cpp
        Source/Components/FxModule.h
        Source/Components/InputDeviceSelector.cpp
        Source/Components/InputDeviceSelector.h
        Source/Components/Prompt.h
        Source/Components/RangeSelector.h
        Source/Components/SampleEditor.cpp
        Source/Components/SampleEditor.h
        Source/Components/SampleNavigator.cpp
        Source/Components/SampleNavigator.h
        Source/Components/Displays/ChorusVisualizer.cpp
        Source/Components/Displays/ChorusVisualizer.h
        Source/Components/Displays/DistortionVisualizer.cpp
        Source/Components/Displays/DistortionVisualizer.h
        Source/Components/Displays/FilterResponse.cpp
        Source/Components/Displays/FilterResponse.h
        Source/Components/Displays/ReverbResponse.cpp
        Source/Components/Displays/ReverbResponse.h
        Source/Components/Displays/SamplePainter.cpp
        Source/Components/Displays/SamplePainter.h
        Source/Sampler/CustomSamplerVoice.cpp
        Source/Sampler/CustomSamplerVoice.h
        Source/Sampler/CustomSynthesizer.h
        Source/Sampler/SamplerParameters.cpp
        Source/Sampler/SamplerParameters.h
        Source/Sampler/Stretcher.h
        Source/Sampler/Effects/BandEQ.h
        Source/Sampler/Effects/Chorus.h
        Source/Sampler/Effects/Distortion.h
        Source/Sampler/Effects/Effect.h
        Source/Sampler/Effects/Reverb.h
        External/Gin/gin_distortion.h
        External/Gin/gin_simpleverb.cpp
        External/Gin/gin_simpleverb.h
        Source/Utilities/BufferUtils.h
        Source/Utilities/ComponentUtils.h
        Source/Utilities/DeviceRecorder.h
        Source/Utilities/ListenableValue.h
        Source/Utilities/PitchDetector.h
        Source/Utilities/SampleLoader.h
        Source/Utilities/Reaper/ReaperVST3Extensions.cpp
        Source/Utilities/Reaper/ReaperVST3Extensions.h
)

juce_add_binary_data(AudioPluginData
        SOURCES
        Assets/Fonts/InriaSans-Bold.ttf
        Assets/Fonts/InriaSans-Regular.ttf
        Assets/Fonts/Inter-Bold.ttf
        Assets/Fonts/Inter-Regular.ttf
        Assets/Icons/IconAdd.svg
        Assets/Icons/IconDarkMode.svg
        Assets/Icons/IconDetect.svg
        Assets/Icons/IconDrag.svg
        Assets/Icons/IconFit.svg
        Assets/Icons/IconHelp.svg
        Assets/Icons/IconHideFX.svg
        Assets/Icons/IconLightMode.svg
        Assets/Icons/IconLinkEnabled.svg
        Assets/Icons/IconLofi.svg
        Assets/Icons/IconLogo.svg
        Assets/Icons/IconLoop.svg
        Assets/Icons/IconLoopStart.svg
        Assets/Icons/IconPingPong.svg
        Assets/Icons/IconMono.svg
        Assets/Icons/IconPin.svg
        Assets/Icons/IconPlay.svg
        Assets/Icons/IconPreFX.svg
        Assets/Icons/IconRecordSettings.svg
        Assets/Icons/IconShowFX.svg
        Assets/Icons/IconSpeed.svg
        Assets/Icons/IconWaveformMode.svg
        Assets/Icons/Logo.svg
)

target_link_libraries(JustASample
        PRIVATE
        AudioPluginData
        juce::juce_audio_utils
        juce::juce_cryptography
        juce::juce_dsp
        juce::juce_opengl
        external_deps
        bungee_library
        melatonin_blur
        $<$<OR:$<CONFIG:Debug>,$<STREQUAL:${CMAKE_GENERATOR},Xcode>>:melatonin_inspector>  # Only link the inspector in debug
        leaf
        PUBLIC
        juce::juce_recommended_config_flags
        juce::juce_recommended_lto_flags
        juce::juce_recommended_warning_flags
)

target_include_directories(JustASample
        PRIVATE
        "${bungee_SOURCE_DIR}/bungee"
        "${CMAKE_BINARY_DIR}"
)

target_compile_definitions(JustASample PUBLIC
        JUCE_WEB_BROWSER=0
        JUCE_USE_CURL=0
        JUCE_VST3_CAN_REPLACE_VST2=0
        JUCE_APP_VERSION="${APP_VERSION}"
        DONT_SET_USING_JUCE_NAMESPACE=1
        BUNGEE_MAX_OCTAVES=${STRETCHER_BUNGEE_MAX_OCTAVES}
        JAS_DARKMODE_DEFAULT=$<BOOL:${JAS_DARKMODE_DEFAULT}>
        JAS_VST3_REAPER_INTEGRATION=$<BOOL:${JAS_VST3_REAPER_INTEGRATION}>
)

add_dependencies(JustASample GenerateBuildInfo)

# JustASample itself already gets LTO via juce::juce_recommended_lto_flags
set_target_properties(bungee_library leaf PROPERTIES
        INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
)

if (JAS_FAST_MATH)
    if (MSVC)
        foreach(_jas_target IN ITEMS JustASample bungee_library leaf)
            target_compile_options(${_jas_target} PRIVATE $<$<CONFIG:Release>:/fp:fast>)
        endforeach()
    else()
        foreach(_jas_target IN ITEMS JustASample bungee_library leaf)
            target_compile_options(${_jas_target} PRIVATE $<$<CONFIG:Release>:-ffast-math>)
        endforeach()
    endif()
endif()

if (JAS_ENABLE_AVX2)
    if (MSVC)
        foreach(_jas_target IN ITEMS JustASample bungee_library leaf)
            target_compile_options(${_jas_target} PRIVATE $<$<CONFIG:Release>:/arch:AVX2>)
        endforeach()
    else()
        foreach(_jas_target IN ITEMS JustASample bungee_library leaf)
            target_compile_options(${_jas_target} PRIVATE $<$<CONFIG:Release>:-mavx2 -mfma>)
        endforeach()
    endif()
endif()

# MSVC patching for Bungee
if (MSVC)
    # Add a dummy unistd.h
    target_include_directories(bungee_library PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/fake_headers)
    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/fake_headers/unistd.h "")

    # Use _USE_MATH_DEFINES to get M_PI and other math constants
    target_compile_definitions(pffft PRIVATE _USE_MATH_DEFINES)

    target_compile_options(pffft PRIVATE "/fp:fast" "/GS-")

    if (NOT CMAKE_CXX_COMPILER_ID MATCHES "Clang")
        # Add a header to define remove __attribute__, since MSVC doesn't support it
        set(BUNGEE_COMPAT_H "${CMAKE_CURRENT_BINARY_DIR}/bungee_msvc_compat.h")
        file(WRITE "${BUNGEE_COMPAT_H}" "
#ifndef BUNGEE_MSVC_COMPAT_H
#define BUNGEE_MSVC_COMPAT_H
#define __attribute__(x)
#endif
")

        target_compile_options(bungee_library PRIVATE "SHELL:/FI \"${BUNGEE_COMPAT_H}\"")
    endif()
endif()