feat: adds GET, GET:id, POST, DELETE:id mappings

lesson_26/api/java/api_app/src/main/java/com/codedifferently/lesson26/web/MediaItemRequest.java

@@ -18,17 +18,21 @@
 @NoArgsConstructor
 @Builder
 public class MediaItemRequest {
-
   private UUID id;
+
   private String type;
+
   private String isbn;
 
   @NotBlank(message = "Title is required")
   private String title;
 
   private String[] authors;
+
   private String edition;
+
   private int pages;
+
   private int runtime;
 
   public static MediaItem asMediaItem(MediaItemRequest request) {

lesson_26/api/java/api_app/src/main/java/com/codedifferently/lesson26/web/MediaItemsController.java

@@ -4,11 +4,20 @@
 import com.codedifferently.lesson26.library.Library;
 import com.codedifferently.lesson26.library.MediaItem;
 import com.codedifferently.lesson26.library.search.SearchCriteria;
+import jakarta.validation.Valid;
 import java.io.IOException;
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
+import java.util.UUID;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
@@ -29,4 +38,54 @@ public GetMediaItemsResponse getItems() {
     var response = GetMediaItemsResponse.builder().items(responseItems).build();
     return response;
   }
+
+  @GetMapping("/items/{id}")
+  public ResponseEntity<MediaItemResponse> getItemById(@PathVariable("id") UUID id) {
+    String stringId = id.toString();
+    SearchCriteria searchCriteria = SearchCriteria.builder().id(stringId).build();
+
+    Set<MediaItem> foundItems = library.search(searchCriteria);
+
+    if (foundItems.isEmpty()) {
+      return ResponseEntity.notFound().build();
+    }
+
+    MediaItem item = foundItems.iterator().next();
+    MediaItemResponse response = MediaItemResponse.from(item);
+
+    return ResponseEntity.ok(response);
+  }
+
+  @PostMapping("/items")
+  public CreateMediaItemResponse createMediaItem(@RequestBody @Valid CreateMediaItemRequest request)
+      throws MethodArgumentNotValidException {
+
+    MediaItemRequest itemRequest = request.getItem();
+
+    var item = MediaItemRequest.asMediaItem(itemRequest);
+
+    library.addMediaItem(item, librarian);
+
+    var response =
+        CreateMediaItemResponse.builder().item(getItemById(item.getId()).getBody()).build();
+
+    return response;
+  }
+
+  @DeleteMapping("/items/{id}")
+  public ResponseEntity<Void> deleteItem(@PathVariable("id") UUID id) {
+
+    SearchCriteria query = new SearchCriteria();
+    Set<MediaItem> items = library.search(query);
+    Optional<MediaItem> item =
+        items.stream().filter(mediaItem -> mediaItem.getId().equals(id)).findFirst();
+
+    if (item.isEmpty()) {
+      return ResponseEntity.notFound().build();
+    }
+
+    library.removeMediaItem(id, librarian);
+
+    return ResponseEntity.noContent().build();
+  }
 }