include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/osc_strict_compiler_options.cmake)  # OSC_STRICT_COMPILER_OPTIONS

set(
    OSC_REPO_URL "https://github.com/ComputationalBiomechanicsLab/opensim-creator"
    CACHE STRING
    "the internet location of the software's repo - used by in-app links, installers, etc."
)
mark_as_advanced(OSC_REPO_URL)
set(
    OSC_DOCS_URL "https://docs.opensimcreator.com"
    CACHE STRING
    "a url for the software's documentation - used by in-app links, installers, etc."
)
mark_as_advanced(OSC_DOCS_URL)
set(
    OSC_HELP_URL "https://github.com/ComputationalBiomechanicsLab/opensim-creator/discussions"
    CACHE STRING
    "the internet location of the software's help page - used by in-app links, installers, etc."
)
mark_as_advanced(OSC_HELP_URL)
set(
    OSC_ORGNAME "cbl"
    CACHE STRING
    "the name of the organization that created the application (affects configuration location)"
)
mark_as_advanced(OSC_ORGNAME)
set(
    OSC_APPNAME "osc"
    CACHE STRING
    "the short name for the application (affects configuration location)"
)
mark_as_advanced(OSC_APPNAME)
set(
    OSC_LONG_APPNAME "OpenSim Creator"
    CACHE STRING
    "a longer, user-friendly name of the application"
)
mark_as_advanced(OSC_LONG_APPNAME)
set(
    OSC_PACKAGE_NAME "opensimcreator"
    CACHE STRING
    "a prefix for the name of the built package (e.g. OSC_PACKAGE_NAME-version.exe)"
)
mark_as_advanced(OSC_PACKAGE_NAME)
set(
    OSC_SOFTWARE_DESCRIPTION "A standalone GUI for building OpenSim models"
    CACHE STRING
    "a desription of what the software does (shows in package installers on Debian, for example)"
)
mark_as_advanced(OSC_SOFTWARE_DESCRIPTION)
set(
    OSC_AUTHOR "Adam Kewley"
    CACHE STRING
    "the user-facing name of the author (appears in installer, etc.)"
)
mark_as_advanced(OSC_AUTHOR)
set(
    OSC_AUTHOR_EMAIL "contact@adamkewley.com"
    CACHE STRING
    "the user-facing email of the author (appears in 'email support', installer, etc.)"
)
mark_as_advanced(OSC_AUTHOR_EMAIL)
set(OSC_BUNDLE_OSCAR_DEMOS OFF
    CACHE BOOL
    "enable/disable bundling oscar demos with the `osc` application"
)

# set OSC_BUILD_ID
if(DEFINED ENV{OSC_BUILD_ID})
    set(OSC_BUILD_ID "$ENV{OSC_BUILD_ID}"
        CACHE STRING
        "a unique identifier for this particular build configuration (handy for bug tracing)"
        FORCE
    )
else()
    set(OSC_BUILD_ID "CUSTOM_BUILD"
        CACHE STRING
        "a unique identifier for this particular build configuration (handy for bug tracing)"
    )
endif()

# set OSC_PACKAGING_DIR
if(TRUE)
    if(WIN32)
        set(OSC_PACKAGING_DIR_DEFAULT "${CMAKE_CURRENT_SOURCE_DIR}/Windows")
    elseif(UNIX AND NOT APPLE)
        set(OSC_PACKAGING_DIR_DEFAULT "${CMAKE_CURRENT_SOURCE_DIR}/Debian")
    elseif(APPLE)
        set(OSC_PACKAGING_DIR_DEFAULT "${CMAKE_CURRENT_SOURCE_DIR}/MacOS")
    else()
        set(OSC_PACKAGING_DIR_DEFAULT "UNKNOWN_PACKAGING_METHOD")
    endif()

    set(OSC_PACKAGING_DIR "${OSC_PACKAGING_DIR_DEFAULT}"
        CACHE PATH
        "a path to a directory containing a `Packaging.cmake` script that package's the application for the target platform"
    )
endif()

# OpenSimCreatorConfig.h
#
# a configured header file that contains values that are accessible in the source
# code at compile-time
configure_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/osc_config.h.in"
    "${CMAKE_CURRENT_BINARY_DIR}/generated/osc/osc_config.h"
)

add_executable(osc

    # configured by `configure_file`
    "${CMAKE_CURRENT_BINARY_DIR}/generated/osc/osc_config.h"

    # entrypoint (main)
    osc.cpp

    # Windows: also link a resources file (rc)
    #
    # the resources file tells MSVC compiler how to compile non-source resources
    # into the output exe. Specifically, it's used to embed the application icon
    # into the `osc` exe
    $<$<CXX_COMPILER_ID:MSVC>:
        ${CMAKE_CURRENT_SOURCE_DIR}/Windows/resources.rc
    >
)
set_target_properties(osc PROPERTIES
    CXX_EXTENSIONS OFF
)
target_compile_features(osc PUBLIC
    cxx_std_23
)
target_compile_options(osc PRIVATE
    ${OSC_STRICT_COMPILER_OPTIONS}
)
target_link_libraries(osc PRIVATE
    OpenSimCreator
    $<$<BOOL:${OSC_BUNDLE_OSCAR_DEMOS}>:oscar_demos>
)
target_include_directories(osc PRIVATE

    # Windows: `resources.rc` uses the include path to find resources
    $<$<CXX_COMPILER_ID:MSVC>:
        ${CMAKE_CURRENT_SOURCE_DIR}/../..
    >

    # so that source code can `#include <osc/osc_config.h>`
    "${CMAKE_CURRENT_BINARY_DIR}/generated/"
)

target_link_options(osc PRIVATE

    # MSVC (Windows)
    $<$<CXX_COMPILER_ID:MSVC>:

        # open as a desktop app, not CLI
        /SUBSYSTEM:windows

        # as above, call into `main`
        /ENTRY:mainCRTStartup
    >
)


# -------------- installation/packaging ------------- #

# set shared/common CPack variables
set(CPACK_PACKAGE_NAME "${OSC_PACKAGE_NAME}")
set(CPACK_PACKAGE_VENDOR "${OSC_AUTHOR}")
set(CPACK_PACKAGE_CONTACT "${OSC_AUTHOR} <${OSC_AUTHOR_EMAIL}>")
set(CPACK_PACKAGE_HOMEPAGE_URL "${OSC_REPO_URL}")
set(CPACK_PACKAGE_DESCRIPTION "${OSC_SOFTWARE_DESCRIPTION}")
set(CPACK_PACKAGE_EXECUTABLES "osc;${OSC_LONG_APPNAME}")  # ensure human-readable application name can be searched in start bar etc. (#1079)

# `include` platform-specific packaging instructions
include(${OSC_PACKAGING_DIR}/Packaging.cmake)


# -------------- development nice-to-haves ------------- #

# generate a dev-centric `osc.toml`
#
#     - this causes osc to load resources from the current source dir
#
#     - which means that devs can edit shaders, models, icons, etc. and immediately
#       test them without having to run a huge copy/sync operation
#
#     - this config is switched out at install-time to a configuration that loads
#       resources from the (copied) resource directory
if(TRUE)
    set(OSC_CONFIG_RESOURCES_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../resources")
    configure_file(
        "${CMAKE_CURRENT_SOURCE_DIR}/osc.toml.in"
        "${CMAKE_BINARY_DIR}/osc.toml"  # CARE: this MUST be CMAKE_BINARY_DIR: multiple executables depend on it
        @ONLY
    )
    unset(OSC_CONFIG_RESOURCES_DIR)
endif()

# for development on Windows, copy all runtime dlls to the exe directory
# (because Windows doesn't have an RPATH)
#
# see: https://cmake.org/cmake/help/latest/manual/cmake-generator-expressions.7.html?highlight=runtime#genex:TARGET_RUNTIME_DLLS
if (WIN32)
    add_custom_command(
        TARGET osc
        PRE_BUILD
        COMMAND ${CMAKE_COMMAND} -E copy -t $<TARGET_FILE_DIR:osc> $<TARGET_RUNTIME_DLLS:osc>
        COMMAND_EXPAND_LISTS
    )
endif()