if(POLICY CMP0087)
  cmake_policy(SET CMP0087 NEW)
endif()

set(OBS_STANDALONE_PLUGIN_DIR ${CMAKE_SOURCE_DIR}/release)
set(INCLUDED_LIBOBS_CMAKE_MODULES ON)

include(GNUInstallDirs)
if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
  set(OS_MACOS ON)
  set(OS_POSIX ON)
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux|FreeBSD|OpenBSD")
  set(OS_POSIX ON)
  string(TOUPPER "${CMAKE_SYSTEM_NAME}" _SYSTEM_NAME_U)
  set(OS_${_SYSTEM_NAME_U} ON)
elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
  set(OS_WINDOWS ON)
  set(OS_POSIX OFF)
endif()

if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT AND (OS_WINDOWS OR OS_MACOS))
  set(CMAKE_INSTALL_PREFIX
      ${OBS_STANDALONE_PLUGIN_DIR}
      CACHE STRING "Directory to install OBS plugin after building" FORCE)
endif()

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE
      "RelWithDebInfo"
      CACHE STRING
            "OBS build type [Release, RelWithDebInfo, Debug, MinSizeRel]" FORCE)
  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Release RelWithDebInfo
                                               Debug MinSizeRel)
endif()

if(NOT QT_VERSION)
  set(QT_VERSION
      AUTO
      CACHE STRING "OBS Qt version [AUTO, 5, 6]" FORCE)
  set_property(CACHE QT_VERSION PROPERTY STRINGS AUTO 5 6)
endif()

macro(find_qt)
  set(multiValueArgs COMPONENTS COMPONENTS_WIN COMPONENTS_MAC COMPONENTS_LINUX)
  cmake_parse_arguments(FIND_QT "" "${oneValueArgs}" "${multiValueArgs}"
                        ${ARGN})
  set(QT_NO_CREATE_VERSIONLESS_TARGETS ON)
  find_package(
    Qt5
    COMPONENTS Core
    QUIET)
  find_package(
    Qt6
    COMPONENTS Core
    QUIET)

  if(NOT _QT_VERSION AND QT_VERSION STREQUAL AUTO)
    if(TARGET Qt6::Core)
      set(_QT_VERSION
          6
          CACHE INTERNAL "")
    elseif(TARGET Qt5::Core)
      set(_QT_VERSION
          5
          CACHE INTERNAL "")
    endif()
    message(STATUS "Qt version: ${_QT_VERSION}")
  elseif(NOT _QT_VERSION)
    if(TARGET Qt${QT_VERSION}::Core)
      set(_QT_VERSION
          ${QT_VERSION}
          CACHE INTERNAL "")
    else()
      if(QT_VERSION EQUAL 6)
        set(FALLBACK_QT_VERSION 5)
      else()
        set(FALLBACK_QT_VERSION 6)
      endif()
      message(
        WARNING
          "Qt${QT_VERSION} was not found, falling back to Qt${FALLBACK_QT_VERSION}"
      )

      if(TARGET Qt${FALLBACK_QT_VERSION}::Core)
        set(_QT_VERSION
            ${FALLBACK_QT_VERSION}
            CACHE INTERNAL "")
      endif()
    endif()
    message(STATUS "Qt version: ${_QT_VERSION}")
  endif()

  set(QT_NO_CREATE_VERSIONLESS_TARGETS OFF)

  if(NOT _QT_VERSION)
    message(FATAL_ERROR "Neither Qt5 or Qt6 were found")
  endif()

  if(OS_WINDOWS)
    find_package(
      Qt${_QT_VERSION}
      COMPONENTS ${FIND_QT_COMPONENTS} ${FIND_QT_COMPONENTS_WIN}
      REQUIRED)
  elseif(OS_MACOS)
    find_package(
      Qt${_QT_VERSION}
      COMPONENTS ${FIND_QT_COMPONENTS} ${FIND_QT_COMPONENTS_MAC}
      REQUIRED)
  else()
    find_package(
      Qt${_QT_VERSION}
      COMPONENTS ${FIND_QT_COMPONENTS} ${FIND_QT_COMPONENTS_LINUX}
      REQUIRED)
  endif()

  list(APPEND FIND_QT_COMPONENTS "Core")

  if("Gui" IN_LIST FIND_QT_COMPONENTS_LINUX)
    list(APPEND FIND_QT_COMPONENTS_LINUX "GuiPrivate")
  endif()

  foreach(_COMPONENT IN LISTS FIND_QT_COMPONENTS FIND_QT_COMPONENTS_WIN
                              FIND_QT_COMPONENTS_MAC FIND_QT_COMPONENTS_LINUX)
    if(NOT TARGET Qt::${_COMPONENT} AND TARGET Qt${_QT_VERSION}::${_COMPONENT})

      add_library(Qt::${_COMPONENT} INTERFACE IMPORTED)
      set_target_properties(
        Qt::${_COMPONENT} PROPERTIES INTERFACE_LINK_LIBRARIES
                                     "Qt${_QT_VERSION}::${_COMPONENT}")
    endif()
  endforeach()
endmacro()

file(RELATIVE_PATH RELATIVE_INSTALL_PATH ${CMAKE_SOURCE_DIR}
     ${CMAKE_INSTALL_PREFIX})
file(RELATIVE_PATH RELATIVE_BUILD_PATH ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR})

# Set up OS-specific environment and helper functions
if(OS_POSIX)
  find_program(CCACHE_PROGRAM "ccache")
  set(CCACHE_SUPPORT
      ON
      CACHE BOOL "Enable ccache support")
  mark_as_advanced(CCACHE_PROGRAM)
  if(CCACHE_PROGRAM AND CCACHE_SUPPORT)
    set(CMAKE_CXX_COMPILER_LAUNCHER
        ${CCACHE_PROGRAM}
        CACHE INTERNAL "")
    set(CMAKE_C_COMPILER_LAUNCHER
        ${CCACHE_PROGRAM}
        CACHE INTERNAL "")
    set(CMAKE_OBJC_COMPILER_LAUNCHER
        ${CCACHE_PROGRAM}
        CACHE INTERNAL "")
    set(CMAKE_OBJCXX_COMPILER_LAUNCHER
        ${CCACHE_PROGRAM}
        CACHE INTERNAL "")
    set(CMAKE_CUDA_COMPILER_LAUNCHER
        ${CCACHE_PROGRAM}
        CACHE INTERNAL "") # CMake 3.9+
  endif()
endif()

if(OS_MACOS)
  set(CMAKE_OSX_ARCHITECTURES
      "x86_64"
      CACHE STRING
            "OBS build architecture for macOS - x86_64 required at least")
  set_property(CACHE CMAKE_OSX_ARCHITECTURES PROPERTY STRINGS x86_64 arm64
                                                      "x86_64;arm64")

  set(CMAKE_OSX_DEPLOYMENT_TARGET
      "10.15"
      CACHE STRING "OBS deployment target for macOS - 10.15+ required")
  set_property(CACHE CMAKE_OSX_DEPLOYMENT_TARGET PROPERTY STRINGS 10.15 11.0
                                                          12.0 13.0)

  set(OBS_BUNDLE_CODESIGN_IDENTITY
      "-"
      CACHE STRING "OBS code signing identity for macOS")
  set(OBS_CODESIGN_ENTITLEMENTS
      ${CMAKE_SOURCE_DIR}/cmake/bundle/macos/entitlements.plist
      CACHE INTERNAL "Path to codesign entitlements plist")
  set(OBS_CODESIGN_LINKER
      ON
      CACHE BOOL "Enable linker code-signing on macOS (macOS 11+ required)")

  # Xcode configuration
  if(XCODE)
    # Tell Xcode to pretend the linker signed binaries so that editing with
    # install_name_tool preserves ad-hoc signatures. This option is supported by
    # codesign on macOS 11 or higher. See CMake Issue 21854:
    # https://gitlab.kitware.com/cmake/cmake/-/issues/21854

    set(CMAKE_XCODE_GENERATE_SCHEME ON)
    if(OBS_CODESIGN_LINKER)
      set(CMAKE_XCODE_ATTRIBUTE_OTHER_CODE_SIGN_FLAGS "-o linker-signed")
    endif()
  endif()

  # Set default options for bundling on macOS
  set(CMAKE_MACOSX_RPATH ON)
  set(CMAKE_SKIP_BUILD_RPATH OFF)
  set(CMAKE_BUILD_WITH_INSTALL_RPATH OFF)
  set(CMAKE_INSTALL_RPATH "@executable_path/../Frameworks/")
  set(CMAKE_INSTALL_RPATH_USE_LINK_PATH OFF)

  function(setup_plugin_target target)
    if(NOT DEFINED MACOSX_PLUGIN_GUI_IDENTIFIER)
      message(
        FATAL_ERROR
          "No 'MACOSX_PLUGIN_GUI_IDENTIFIER' set, but is required to build plugin bundles on macOS - example: 'com.yourname.pluginname'"
      )
    endif()

    if(NOT DEFINED MACOSX_PLUGIN_BUNDLE_VERSION)
      message(
        FATAL_ERROR
          "No 'MACOSX_PLUGIN_BUNDLE_VERSION' set, but is required to build plugin bundles on macOS - example: '25'"
      )
    endif()

    if(NOT DEFINED MACOSX_PLUGIN_SHORT_VERSION_STRING)
      message(
        FATAL_ERROR
          "No 'MACOSX_PLUGIN_SHORT_VERSION_STRING' set, but is required to build plugin bundles on macOS - example: '1.0.2'"
      )
    endif()

    set(MACOSX_PLUGIN_BUNDLE_NAME
        "${target}"
        PARENT_SCOPE)
    set(MACOSX_PLUGIN_BUNDLE_VERSION
        "${MACOSX_BUNDLE_BUNDLE_VERSION}"
        PARENT_SCOPE)
    set(MACOSX_PLUGIN_SHORT_VERSION_STRING
        "${MACOSX_BUNDLE_SHORT_VERSION_STRING}"
        PARENT_SCOPE)
    set(MACOSX_PLUGIN_EXECUTABLE_NAME
        "${target}"
        PARENT_SCOPE)
    set(MACOSX_PLUGIN_BUNDLE_TYPE
        "BNDL"
        PARENT_SCOPE)

    install(
      TARGETS ${target}
      LIBRARY DESTINATION "."
              COMPONENT obs_plugins
              NAMELINK_COMPONENT ${target}_Development)

    if(${QT_VERSION} EQUAL 5)
      set(_QT_FW_VERSION "${QT_VERSION}")
    else()
      set(_QT_FW_VERSION "A")
    endif()

    set(_COMMAND
        "${CMAKE_INSTALL_NAME_TOOL} \\
      -change ${CMAKE_PREFIX_PATH}/lib/QtWidgets.framework/Versions/${QT_VERSION}/QtWidgets @rpath/QtWidgets.framework/Versions/${_QT_FW_VERSION}/QtWidgets \\
      -change ${CMAKE_PREFIX_PATH}/lib/QtCore.framework/Versions/${QT_VERSION}/QtCore @rpath/QtCore.framework/Versions/${_QT_FW_VERSION}/QtCore \\
      -change ${CMAKE_PREFIX_PATH}/lib/QtGui.framework/Versions/${QT_VERSION}/QtGui @rpath/QtGui.framework/Versions/${_QT_FW_VERSION}/QtGui \\
      \\\"\${CMAKE_INSTALL_PREFIX}/${target}.plugin/Contents/MacOS/${target}\\\""
    )
    install(CODE "execute_process(COMMAND /bin/sh -c \"${_COMMAND}\")"
            COMPONENT obs_plugins)
    unset(_QT_FW_VERSION)

    if(NOT XCODE)
      set(_COMMAND
          "/usr/bin/codesign --force \\
          --sign \\\"${OBS_BUNDLE_CODESIGN_IDENTITY}\\\" \\
          --options runtime \\
          --entitlements \\\"${CMAKE_CURRENT_FUNCTION_LIST_DIR}/bundle/macOS/entitlements.plist\\\" \\
          \\\"\${CMAKE_INSTALL_PREFIX}/${target}.plugin\\\"")
      install(CODE "execute_process(COMMAND /bin/sh -c \"${_COMMAND}\")"
              COMPONENT obs_plugins)
    endif()

    set_target_properties(
      ${target}
      PROPERTIES
        BUNDLE ON
        BUNDLE_EXTENSION "plugin"
        OUTPUT_NAME ${target}
        MACOSX_BUNDLE_INFO_PLIST
        "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/bundle/macOS/Plugin-Info.plist.in"
        XCODE_ATTRIBUTE_PRODUCT_BUNDLE_IDENTIFIER
        "${MACOSX_PLUGIN_GUI_IDENTIFIER}"
        XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "${OBS_BUNDLE_CODESIGN_IDENTITY}"
        XCODE_ATTRIBUTE_CODE_SIGN_ENTITLEMENTS
        "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/bundle/macOS/entitlements.plist")

    add_custom_command(
      TARGET ${target}
      POST_BUILD
      COMMAND
        /bin/sh -c
        "codesign --force --sign \"-\" $<$<BOOL:${OBS_CODESIGN_LINKER}>:--options linker-signed >\"$<TARGET_BUNDLE_DIR:${target}>\""
      COMMENT "Codesigning ${target}"
      VERBATIM)

    install_bundle_resources(${target})
  endfunction()

  function(install_bundle_resources target)
    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/data)
      file(GLOB_RECURSE _DATA_FILES "${CMAKE_CURRENT_SOURCE_DIR}/data/*")
      foreach(_DATA_FILE IN LISTS _DATA_FILES)
        file(RELATIVE_PATH _RELATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/data/
             ${_DATA_FILE})
        get_filename_component(_RELATIVE_PATH ${_RELATIVE_PATH} PATH)
        target_sources(${target} PRIVATE ${_DATA_FILE})
        set_source_files_properties(
          ${_DATA_FILE} PROPERTIES MACOSX_PACKAGE_LOCATION
                                   Resources/${_RELATIVE_PATH})
        string(REPLACE "\\" "\\\\" _GROUP_NAME ${_RELATIVE_PATH})
        source_group("Resources\\${_GROUP_NAME}" FILES ${_DATA_FILE})
      endforeach()
    endif()
  endfunction()
else()
  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
    set(_ARCH_SUFFIX 64)
  else()
    set(_ARCH_SUFFIX 32)
  endif()
  set(OBS_OUTPUT_DIR ${CMAKE_BINARY_DIR}/rundir)

  if(OS_POSIX)
    option(LINUX_PORTABLE "Build portable version (Linux)" ON)
    if(NOT LINUX_PORTABLE)
      set(OBS_LIBRARY_DESTINATION ${CMAKE_INSTALL_LIBDIR})
      set(OBS_PLUGIN_DESTINATION ${OBS_LIBRARY_DESTINATION}/obs-plugins)
      set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/lib)
      set(OBS_DATA_DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/obs)
    else()
      set(OBS_LIBRARY_DESTINATION bin/${_ARCH_SUFFIX}bit)
      set(OBS_PLUGIN_DESTINATION obs-plugins/${_ARCH_SUFFIX}bit)
      set(CMAKE_INSTALL_RPATH
          "$ORIGIN/" "${CMAKE_INSTALL_PREFIX}/${OBS_LIBRARY_DESTINATION}")
      set(OBS_DATA_DESTINATION "data")
    endif()

    if(OS_LINUX)
      set(CPACK_PACKAGE_NAME "${CMAKE_PROJECT_NAME}")
      set(CPACK_DEBIAN_PACKAGE_MAINTAINER "${LINUX_MAINTAINER_EMAIL}")
      set(CPACK_PACKAGE_VERSION "${CMAKE_PROJECT_VERSION}")
      set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-linux-x86_64")

      set(CPACK_GENERATOR "DEB")
      if(${QT_VERSION} STREQUAL "6")
        set(CPACK_DEBIAN_PACKAGE_DEPENDS
            "obs-studio (>= 28.0.0), libqt6core6 (>= 6.2.0), libqt6gui6 (>= 6.1.2), libqt6widgets6 (>= 6.1.2)"
        )
      else()
        set(CPACK_DEBIAN_PACKAGE_DEPENDS
            "obs-studio (>= 28.0.0), libqt5core5a (>= 5.9.0~beta), libqt5gui5 (>= 5.3.0), libqt5widgets5 (>= 5.7.0)"
        )
      endif()

      set(CPACK_OUTPUT_FILE_PREFIX ${CMAKE_SOURCE_DIR}/release)

      if(NOT LINUX_PORTABLE)
        set(CPACK_SET_DESTDIR ON)
      endif()
      include(CPack)
    endif()
  else()
    set(OBS_LIBRARY_DESTINATION "bin/${_ARCH_SUFFIX}bit")
    set(OBS_LIBRARY32_DESTINATION "bin/32bit")
    set(OBS_LIBRARY64_DESTINATION "bin/64bit")
    set(OBS_PLUGIN_DESTINATION "obs-plugins/${_ARCH_SUFFIX}bit")
    set(OBS_PLUGIN32_DESTINATION "obs-plugins/32bit")
    set(OBS_PLUGIN64_DESTINATION "obs-plugins/64bit")

    set(OBS_DATA_DESTINATION "data")
  endif()

  function(setup_plugin_target target)
    set_target_properties(${target} PROPERTIES PREFIX "")

    install(
      TARGETS ${target}
      RUNTIME DESTINATION "${OBS_PLUGIN_DESTINATION}"
              COMPONENT ${target}_Runtime
      LIBRARY DESTINATION "${OBS_PLUGIN_DESTINATION}"
              COMPONENT ${target}_Runtime
              NAMELINK_COMPONENT ${target}_Development)

    install(
      FILES $<TARGET_FILE:${target}>
      DESTINATION $<CONFIG>/${OBS_PLUGIN_DESTINATION}
      COMPONENT obs_rundir
      EXCLUDE_FROM_ALL)

    if(OS_WINDOWS)
      install(
        FILES $<TARGET_PDB_FILE:${target}>
        CONFIGURATIONS "RelWithDebInfo" "Debug"
        DESTINATION ${OBS_PLUGIN_DESTINATION}
        COMPONENT ${target}_Runtime
        OPTIONAL)

      install(
        FILES $<TARGET_PDB_FILE:${target}>
        CONFIGURATIONS "RelWithDebInfo" "Debug"
        DESTINATION $<CONFIG>/${OBS_PLUGIN_DESTINATION}
        COMPONENT obs_rundir
        OPTIONAL EXCLUDE_FROM_ALL)
    endif()

    if(MSVC)
      target_link_options(
        ${target}
        PRIVATE
        "LINKER:/OPT:REF"
        "$<$<NOT:$<EQUAL:${CMAKE_SIZEOF_VOID_P},8>>:LINKER\:/SAFESEH\:NO>"
        "$<$<CONFIG:DEBUG>:LINKER\:/INCREMENTAL:NO>"
        "$<$<CONFIG:RELWITHDEBINFO>:LINKER\:/INCREMENTAL:NO>")
    endif()

    setup_target_resources(${target} obs-plugins/${target})

    if(OS_WINDOWS AND DEFINED OBS_BUILD_DIR)
      setup_target_for_testing(${target} obs-plugins/${target})
    endif()

    add_custom_command(
      TARGET ${target}
      POST_BUILD
      COMMAND
        "${CMAKE_COMMAND}" -DCMAKE_INSTALL_PREFIX=${OBS_OUTPUT_DIR}
        -DCMAKE_INSTALL_COMPONENT=obs_rundir
        -DCMAKE_INSTALL_CONFIG_NAME=$<CONFIG> -P
        ${CMAKE_CURRENT_BINARY_DIR}/cmake_install.cmake
      COMMENT "Installing to plugin rundir"
      VERBATIM)
  endfunction()

  function(setup_target_resources target destination)
    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/data)
      install(
        DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/data/
        DESTINATION ${OBS_DATA_DESTINATION}/${destination}
        USE_SOURCE_PERMISSIONS
        COMPONENT obs_plugins)

      install(
        DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/data
        DESTINATION $<CONFIG>/${OBS_DATA_DESTINATION}/${destination}
        USE_SOURCE_PERMISSIONS
        COMPONENT obs_rundir
        EXCLUDE_FROM_ALL)
    endif()
  endfunction()

  if(OS_WINDOWS)
    function(setup_target_for_testing target destination)
      install(
        FILES $<TARGET_FILE:${target}>
        DESTINATION $<CONFIG>/${OBS_PLUGIN_DESTINATION}
        COMPONENT obs_testing
        EXCLUDE_FROM_ALL)

      install(
        FILES $<TARGET_PDB_FILE:${target}>
        CONFIGURATIONS "RelWithDebInfo" "Debug"
        DESTINATION $<CONFIG>/${OBS_PLUGIN_DESTINATION}
        COMPONENT obs_testing
        OPTIONAL EXCLUDE_FROM_ALL)

      install(
        DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/data/
        DESTINATION $<CONFIG>/${OBS_DATA_DESTINATION}/${destination}
        USE_SOURCE_PERMISSIONS
        COMPONENT obs_testing
        EXCLUDE_FROM_ALL)

      add_custom_command(
        TARGET ${target}
        POST_BUILD
        COMMAND
          "${CMAKE_COMMAND}" -DCMAKE_INSTALL_PREFIX=${OBS_BUILD_DIR}/rundir
          -DCMAKE_INSTALL_COMPONENT=obs_testing
          -DCMAKE_INSTALL_CONFIG_NAME=$<CONFIG> -P
          ${CMAKE_CURRENT_BINARY_DIR}/cmake_install.cmake
        COMMENT "Installing to OBS test directory"
        VERBATIM)
    endfunction()
  endif()
endif()