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   *        http://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.causeway.testdomain.jdo;
  
  import java.util.List;
  import java.util.function.Consumer;
  import java.util.stream.Collectors;
  
  import jakarta.inject.Inject;
  import jakarta.inject.Named;
  import jakarta.xml.bind.JAXBException;
  
  import org.springframework.web.context.request.RequestContextHolder;
  import org.springframework.web.context.request.ServletRequestAttributes;
  
  import org.apache.causeway.applib.annotation.Action;
  import org.apache.causeway.applib.annotation.DomainService;
  import org.apache.causeway.applib.annotation.ParameterLayout;
  import org.apache.causeway.applib.annotation.PriorityPrecedence;
  import org.apache.causeway.applib.services.factory.FactoryService;
  import org.apache.causeway.applib.services.repository.RepositoryService;
  import org.apache.causeway.commons.internal.base._NullSafe;
  import org.apache.causeway.commons.internal.collections._Lists;
  import org.apache.causeway.extensions.fullcalendar.applib.value.CalendarEvent;
  import org.apache.causeway.testdomain.jdo.entities.JdoBook;
  import org.apache.causeway.testdomain.jdo.entities.JdoProduct;
  import org.apache.causeway.testdomain.util.dto.BookDto;
  
  import lombok.RequiredArgsConstructor;
  
  @Named("testdomain.jdo.InventoryResource")
  @DomainService(
          aliased = "testdomain.jdo.InventoryResourceAlias" // <-- as tested with RestEndpointService
  )
  @jakarta.annotation.Priority(PriorityPrecedence.EARLY)
  @RequiredArgsConstructor(onConstructor_ = { @Inject })
  public class JdoInventoryResource {
  
      final RepositoryService repository;
      final FactoryService factoryService;
      final JdoTestFixtures jdoTestFixtures;
  
      @Action
      public List<JdoProduct> listProducts() {
          return repository.allInstances(JdoProduct.class);
      }
  
      @Action
      public List<JdoBook> listBooks() {
          return repository.allInstances(JdoBook.class);
      }
  
      @Action
      public JdoBook recommendedBookOfTheWeek() {
          return repository.persist(
                  JdoBook.fromDto(recommendedBookOfTheWeekDto()));
      }
  
      @Action // REST stress test action
      public BookDto recommendedBookOfTheWeekDto() {
          return BookDto.builder()
                  .name("Book of the week")
                  .description("An awesome Book")
                  .price(12)
                  .author("Author")
                  .isbn("ISBN")
                  .publisher("Publisher")
                  .build();
      }
  
      @Action
      public List<JdoBook> multipleBooks(
              @ParameterLayout(named = "")
              final int nrOfBooks) {
          return listBooks();
      }
  
      @Action //XXX improve the REST client such that the param can be of type JdoBook?
      public JdoBook storeBook(final String newBook) throws JAXBException {
          var book = JdoBook.fromDto(BookDto.decode(newBook));
          return repository.persist(book);
      }
  
      @Action // echos given CalendarEvent (composite value type test)
      public CalendarEvent echoCalendarEvent(final CalendarEvent calendarEvent) throws JAXBException {
          return calendarEvent;
      }
  
      // -- NON - ENTITIES
  
      @Action
      public String httpSessionInfo() {
  
          // when running with basic-auth strategy, we don't want to create HttpSessions at all
  
          var servletRequestAttributes =
                  (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();
          var httpSession = servletRequestAttributes.getRequest().getSession(false);
          if(httpSession==null) {
              return "no http-session";
          }
          var sessionAttributeNames = _NullSafe.stream(httpSession.getAttributeNames())
          .collect(Collectors.joining(","));
  
          return String.format("http-session attribute names: {%s}", sessionAttributeNames);
      }
  
      @Action
      public BookDto recommendedBookOfTheWeekAsDto() {
          // for this test we do not care if we generate duplicates
          var book = JdoBook
                  .of("Book of the week", "An awesome Book", 12, "Author", "ISBN", "Publisher");
          return BookDto.from(book);
      }
  
      @Action
      public List<BookDto> multipleBooksAsDto(
              @ParameterLayout(named = "") final
              int nrOfBooks) {
  
          var books = _Lists.<BookDto>newArrayList();
          createMultipleBooks("MultipleBooksAsDtoTest", nrOfBooks, newBook->books.add(BookDto.from(newBook)));
          return books;
      }
  
      @Action
      public JdoInventoryJaxbVm inventoryAsJaxbVm() {
          var inventoryJaxbVm = factoryService.viewModel(new JdoInventoryJaxbVm());
          var books = listBooks();
          if(_NullSafe.size(books)>0) {
              inventoryJaxbVm.setName("Bookstore");
              inventoryJaxbVm.setBooks(books);
              inventoryJaxbVm.setFavoriteBook(books.get(0));
          }
          return inventoryJaxbVm;
      }
  
      // -- HELPER
  
      private List<JdoBook> createMultipleBooks(
              final String bookTitle,
              final int nrOfBooks,
              final Consumer<JdoBook> onNewBook) {
  
          var books = _Lists.<JdoBook>newArrayList();
  
          // for this test we do not care if we generate duplicates
          for(int i=0; i<nrOfBooks; ++i) {
              var book = JdoBook
                      .of(bookTitle, "An awesome Book["+i+"]", 12, "Author", "ISBN-"+i, "Publisher");
              onNewBook.accept(book);
              books.add(book);
          }
          return books;
      }
  
  }
  