feat:add MediaItemsController.java with all features passing For Lesson_26.

Author: DavisD251

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

@@ -1,17 +1,26 @@
 package com.codedifferently.lesson26.web;
 
-import com.codedifferently.lesson26.library.Librarian;
-import com.codedifferently.lesson26.library.Library;
-import com.codedifferently.lesson26.library.MediaItem;
-import com.codedifferently.lesson26.library.search.SearchCriteria;
 import java.io.IOException;
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
+import java.util.UUID;
+
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 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;
 
+import com.codedifferently.lesson26.library.Librarian;
+import com.codedifferently.lesson26.library.Library;
+import com.codedifferently.lesson26.library.MediaItem;
+import com.codedifferently.lesson26.library.search.SearchCriteria;
+
 @RestController
 @CrossOrigin
 public class MediaItemsController {
@@ -31,4 +40,50 @@ public ResponseEntity<GetMediaItemsResponse> getItems() {
     var response = GetMediaItemsResponse.builder().items(responseItems).build();
     return ResponseEntity.ok(response);
   }
+  @PostMapping("/items")
+public ResponseEntity<MediaItemResponse> createItem(@RequestBody MediaItemRequest request) {
+    MediaItem newItem = MediaItemRequest.asMediaItem(request);
+
+    Librarian librarian = new Librarian("system", "system@example.com");
+
+    library.addMediaItem(newItem, librarian);
+
+    return new ResponseEntity<>(MediaItemResponse.from(newItem), HttpStatus.CREATED);
+}
+
+@GetMapping("/items/{id}")
+public ResponseEntity<MediaItemResponse> getItemById(@PathVariable UUID id) {
+    Set<MediaItem> allItems = library.search(SearchCriteria.builder().build());
+
+    Optional<MediaItem> itemOpt = allItems.stream()
+        .filter(item -> item.getId().equals(id))
+        .findFirst();
+
+    if (itemOpt.isEmpty()) {
+        return ResponseEntity.notFound().build();
+    }
+
+    MediaItemResponse response = MediaItemResponse.from(itemOpt.get());
+    return ResponseEntity.ok(response);
+}
+
+
+@DeleteMapping("/items/{id}")
+public ResponseEntity<Void> deleteItemById(@PathVariable UUID id) {
+    Optional<MediaItem> itemOpt = library.search(SearchCriteria.builder().build())
+        .stream()
+        .filter(item -> item.getId().equals(id))
+        .findFirst();
+
+    if (itemOpt.isEmpty()) {
+        return ResponseEntity.notFound().build();
+    }
+
+    MediaItem item = itemOpt.get();
+    Librarian librarian = new Librarian("system", "system@example.com"); // placeholder
+    library.removeMediaItem(item, librarian);
+
+    return ResponseEntity.noContent().build(); // 204 No Content
+}
+
 }