In-App purchasing demo

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## hangman Binary:
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cmake_minimum_required(VERSION 3.16)
project(hangman LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOMOC ON)

if(NOT DEFINED INSTALL_EXAMPLESDIR)
    set(INSTALL_EXAMPLESDIR "examples")
endif()

set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/demos/hangman")
set(OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/demos/hangman")

find_package(Qt6 REQUIRED COMPONENTS Core Gui Qml Quick QuickControls2)

qt_add_executable(hangman
    MANUAL_FINALIZATION
    hangmangame.cpp hangmangame.h
    main.cpp
    purchasing/inapp/inappproduct.cpp purchasing/inapp/inappproduct.h
    purchasing/inapp/inapppurchasebackend.cpp purchasing/inapp/inapppurchasebackend.h
    purchasing/inapp/inappstore.cpp purchasing/inapp/inappstore.h
    purchasing/inapp/inapptransaction.cpp purchasing/inapp/inapptransaction.h
    purchasing/qmltypes/inappproductqmltype.cpp purchasing/qmltypes/inappproductqmltype.h
    purchasing/qmltypes/inappstoreqmltype.cpp purchasing/qmltypes/inappstoreqmltype.h
)

target_include_directories(hangman PRIVATE
    purchasing/inapp
    purchasing/qmltypes
)

qt_add_qml_module(hangman
    URI Hangman
    VERSION  1.0
    NO_RESOURCE_TARGET_PATH
    QML_FILES
      qml/GameView.qml
      qml/GuessWordView.qml
      qml/Hangman.qml
      qml/HowToView.qml
      qml/Key.qml
      qml/Letter.qml
      qml/LetterSelector.qml
      qml/MainView.qml
      qml/PageHeader.qml
      qml/ScoreItem.qml
      qml/SimpleButton.qml
      qml/SplashScreen.qml
      qml/StoreItem.qml
      qml/StoreView.qml
      qml/Word.qml
      main.qml
)

qt_add_resources(hangman "resources"
    PREFIX
        "/"
    FILES
        dict.txt
)

if(ANDROID)
    set_property(TARGET hangman APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
        ${CMAKE_CURRENT_SOURCE_DIR}/purchasing/android/
    )

    target_sources(hangman PRIVATE
        purchasing/android/androidinappproduct.cpp purchasing/android/androidinappproduct.h
        purchasing/android/androidinapppurchasebackend.cpp purchasing/android/androidinapppurchasebackend.h
        purchasing/android/androidinapptransaction.cpp purchasing/android/androidinapptransaction.h
        purchasing/android/androidjni.cpp
    )
endif()

if(IOS)
    target_sources(hangman PRIVATE
            purchasing/ios/iosinapppurchasebackend.h purchasing/ios/iosinapppurchasebackend.mm
            purchasing/ios/iosinapppurchaseproduct.h purchasing/ios/iosinapppurchaseproduct.mm
            purchasing/ios/iosinapppurchasetransaction.h purchasing/ios/iosinapppurchasetransaction.mm
    )

    target_link_libraries(hangman PRIVATE
        "-framework Foundation"
        "-framework StoreKit"
    )
endif()

target_link_libraries(hangman PRIVATE
    Qt::Core
    Qt::Gui
    Qt::Qml
    Qt::Quick
    Qt::QuickControls2
)

qt_finalize_executable(hangman)

install(TARGETS hangman
    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
)