- small updates

src/main/java/club/ttg/dnd5/controller/book/BookController.java

@@ -47,6 +47,13 @@ public ResponseEntity<List<SourceBookDTO>> getBooksByType(
         return ResponseEntity.ok(books);
     }
 
+    @GetMapping("/books/by-book-tag-type")
+    @Operation(summary = "Получить книги по типу тега", description = "Возвращает книги, связанные с тегами типа TAG_BOOK")
+    public ResponseEntity<List<SourceBookDTO>> getBooksByBookTagType() {
+        List<SourceBookDTO> books = bookService.getBooksByBookTagType();
+        return ResponseEntity.ok(books);
+    }
+
     /**
      * Получение книги по акрониму источника.
      *

src/main/java/club/ttg/dnd5/repository/TagRepository.java

@@ -1,12 +1,15 @@
 package club.ttg.dnd5.repository;
 
 import club.ttg.dnd5.model.base.Tag;
+import club.ttg.dnd5.model.base.TagType;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
 import java.util.Optional;
 
 @Repository
 public interface TagRepository extends JpaRepository<Tag, Long> {
     Optional<Tag> findByNameIgnoreCase(String name);
+    List<Tag> findByTagType(TagType tagType);
 }

src/main/java/club/ttg/dnd5/service/book/BookService.java

@@ -12,7 +12,6 @@
 import club.ttg.dnd5.model.book.TypeBook;
 import club.ttg.dnd5.repository.TagRepository;
 import club.ttg.dnd5.repository.book.BookRepository;
-import club.ttg.dnd5.service.TagService;
 import jakarta.transaction.Transactional;
 import lombok.RequiredArgsConstructor;
 import org.apache.commons.lang3.StringUtils;
@@ -27,7 +26,6 @@
 public class BookService {
     private final BookRepository bookRepository;
     private final TagRepository tagRepository;
-    private final TagService tagService;
 
     // Создание новой книги
     @Transactional
@@ -68,6 +66,18 @@ public List<SourceBookDTO> getBooksByTag(String tagName) {
                 .toList();
     }
 
+    public List<SourceBookDTO> getBooksByBookTagType() {
+        List<Tag> tags = tagRepository.findByTagType(TagType.TAG_BOOK);
+
+        Set<Book> books = tags.stream()
+                .flatMap(tag -> tag.getBooks().stream())
+                .collect(Collectors.toSet());
+
+        return books.stream()
+                .map(this::convertingEntityToSourceDTO)
+                .collect(Collectors.toList());
+    }
+
     private Book convertingCreateSourceToEntity(SourceBookDTO sourceBookDTO) {
         NameBasedDTO name = sourceBookDTO.getName();
         if (StringUtils.isBlank(name.getShortName())) {