Refactoring: less reliance on entity-specific exceptions, more converters, etc.

src/integrationTest/java/app/mealsmadeeasy/api/image/ImageControllerTests.java

@@ -9,6 +9,7 @@ import app.mealsmadeeasy.api.image.spec.ImageUpdateSpec;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.user.UserCreateException;
 import app.mealsmadeeasy.api.user.UserService;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -393,7 +394,7 @@ public class ImageControllerTests {
                         .header("Authorization", "Bearer " + accessToken)
         )
                 .andExpect(status().isNoContent());
-        assertThrows(ImageException.class, () -> this.imageService.getById(image.getId(), owner));
+        assertThrows(NoSuchEntityWithIdException.class, () -> this.imageService.getById(image.getId(), owner));
     }
 
     @Test

src/integrationTest/java/app/mealsmadeeasy/api/image/S3ImageServiceTests.java

@@ -6,6 +6,7 @@ import app.mealsmadeeasy.api.image.spec.ImageUpdateSpec;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.user.UserCreateException;
 import app.mealsmadeeasy.api.user.UserService;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -261,7 +262,7 @@ public class S3ImageServiceTests {
         final User owner = this.seedUser();
         final Image image = this.seedImage(owner);
         this.imageService.deleteImage(image, owner);
-        assertThrows(ImageException.class, () -> this.imageService.getById(image.getId(), owner));
+        assertThrows(NoSuchEntityWithIdException.class, () -> this.imageService.getById(image.getId(), owner));
     }
 
 }

src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeRepositoryTests.java

@@ -7,6 +7,7 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.domain.Pageable;
 
 import java.time.OffsetDateTime;
 import java.util.HashSet;
@@ -46,7 +47,7 @@ public class RecipeRepositoryTests {
         publicRecipe.setRawText("Hello, World!");
         final Recipe savedRecipe = this.recipeRepository.save(publicRecipe);
 
-        final List<Recipe> publicRecipes = this.recipeRepository.findAllByIsPublicIsTrue();
+        final List<Recipe> publicRecipes = this.recipeRepository.findAllByIsPublicIsTrue(Pageable.unpaged()).toList();
         assertThat(publicRecipes).anyMatch(recipeEntity -> recipeEntity.getId().equals(savedRecipe.getId()));
     }
 
@@ -60,7 +61,7 @@ public class RecipeRepositoryTests {
         nonPublicRecipe.setRawText("Hello, World!");
         final Recipe savedRecipe = this.recipeRepository.save(nonPublicRecipe);
 
-        final List<Recipe> publicRecipes = this.recipeRepository.findAllByIsPublicIsTrue();
+        final List<Recipe> publicRecipes = this.recipeRepository.findAllByIsPublicIsTrue(Pageable.unpaged()).toList();
         assertThat(publicRecipes).noneMatch(recipeEntity -> recipeEntity.getId().equals(savedRecipe.getId()));
     }
 

src/integrationTest/java/app/mealsmadeeasy/api/recipe/RecipeServiceTests.java

@@ -1,14 +1,13 @@
 package app.mealsmadeeasy.api.recipe;
 
 import app.mealsmadeeasy.api.IntegrationTestsExtension;
-import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.recipe.spec.RecipeCreateSpec;
 import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.star.RecipeStar;
 import app.mealsmadeeasy.api.recipe.star.RecipeStarService;
-import app.mealsmadeeasy.api.recipe.view.RecipeInfoView;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.user.UserRepository;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
 import org.jetbrains.annotations.Nullable;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -21,7 +20,6 @@ import org.springframework.security.access.AccessDeniedException;
 import java.util.List;
 import java.util.UUID;
 
-import static app.mealsmadeeasy.api.recipe.ContainsRecipeInfoViewsForRecipesMatcher.containsRecipeInfoViewsForRecipes;
 import static app.mealsmadeeasy.api.recipe.ContainsRecipesMatcher.containsRecipes;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
@@ -78,13 +76,6 @@ public class RecipeServiceTests {
         assertThat(recipe.getRawText(), is("Hello!"));
     }
 
-    @Test
-    public void createWithoutOwnerThrowsAccessDenied() {
-        assertThrows(AccessDeniedException.class, () -> this.recipeService.create(
-                null, RecipeCreateSpec.builder().build()
-        ));
-    }
-
     @Test
     public void getByIdPublicNoViewerDoesNotThrow() {
         final User owner = this.seedUser();
@@ -93,7 +84,7 @@ public class RecipeServiceTests {
     }
 
     @Test
-    public void getByIdHasCorrectProperties() throws RecipeException {
+    public void getByIdHasCorrectProperties() {
         final User owner = this.seedUser();
         final Recipe recipe = this.createTestRecipe(owner, true);
         final Recipe byId = this.recipeService.getById(recipe.getId(), null);
@@ -154,7 +145,7 @@ public class RecipeServiceTests {
     }
 
     @Test
-    public void getByIdWithStarsOkayWhenPublicRecipeWithViewer() throws RecipeException, ImageException {
+    public void getByIdWithStarsOkayWhenPublicRecipeWithViewer() {
         final User owner = this.seedUser();
         final User viewer = this.seedUser();
         final Recipe notYetPublicRecipe = this.createTestRecipe(owner);
@@ -195,7 +186,7 @@ public class RecipeServiceTests {
     }
 
     @Test
-    public void getByMinimumStarsOnlySomeViewable() throws RecipeException {
+    public void getByMinimumStarsOnlySomeViewable() {
         final User owner = this.seedUser();
         final User u0 = this.seedUser();
         final User u1 = this.seedUser();
@@ -245,7 +236,7 @@ public class RecipeServiceTests {
         Recipe r0 = this.createTestRecipe(owner, true);
         Recipe r1 = this.createTestRecipe(owner, true);
 
-        final List<Recipe> publicRecipes = this.recipeService.getPublicRecipes();
+        final List<Recipe> publicRecipes = this.recipeService.getPublicRecipes(Pageable.unpaged()).toList();
         assertThat(publicRecipes, containsRecipes(r0, r1));
     }
 
@@ -255,37 +246,13 @@ public class RecipeServiceTests {
         Recipe r0 = this.createTestRecipe(owner, true);
         Recipe r1 = this.createTestRecipe(owner, false);
 
-        final Slice<RecipeInfoView> viewableInfoViewsSlice = this.recipeService.getInfoViewsViewableBy(
+        final Slice<Recipe> viewableInfoViewsSlice = this.recipeService.getViewableBy(Pageable.unpaged(), owner);
-                Pageable.ofSize(20),
+        final List<Recipe> viewableInfos = viewableInfoViewsSlice.toList();
-                owner
+        assertThat(viewableInfos, containsRecipes(r0, r1));
-        );
-        final List<RecipeInfoView> viewableInfos = viewableInfoViewsSlice.getContent();
-        assertThat(viewableInfos, containsRecipeInfoViewsForRecipes(r0, r1));
     }
 
     @Test
-    public void getRecipesViewableByUser() throws RecipeException {
+    public void updateRawText() {
-        final User owner = this.seedUser();
-        final User viewer = this.seedUser();
-
-        Recipe r0 = this.createTestRecipe(owner);
-        r0 = this.recipeService.addViewer(r0.getId(), owner, viewer);
-        final List<Recipe> viewableRecipes = this.recipeService.getRecipesViewableBy(viewer);
-        assertThat(viewableRecipes.size(), is(1));
-        assertThat(viewableRecipes, containsRecipes(r0));
-    }
-
-    @Test
-    public void getRecipesOwnedByUser() {
-        final User owner = this.seedUser();
-        final Recipe r0 = this.createTestRecipe(owner);
-        final List<Recipe> ownedRecipes = this.recipeService.getRecipesOwnedBy(owner);
-        assertThat(ownedRecipes.size(), is(1));
-        assertThat(ownedRecipes, containsRecipes(r0));
-    }
-
-    @Test
-    public void updateRawText() throws RecipeException, ImageException {
         final User owner = this.seedUser();
         final RecipeCreateSpec createSpec = RecipeCreateSpec.builder()
                 .slug(UUID.randomUUID().toString())
@@ -330,7 +297,7 @@ public class RecipeServiceTests {
         final User owner = this.seedUser();
         final Recipe toDelete = this.createTestRecipe(owner);
         this.recipeService.deleteRecipe(toDelete.getId(), owner);
-        assertThrows(RecipeException.class, () -> this.recipeService.getById(toDelete.getId(), owner));
+        assertThrows(NoSuchEntityWithIdException.class, () -> this.recipeService.getById(toDelete.getId(), owner));
     }
 
     @Test

src/integrationTest/java/app/mealsmadeeasy/api/recipe/star/RecipeStarServiceTests.java

@@ -2,7 +2,6 @@ package app.mealsmadeeasy.api.recipe.star;
 
 import app.mealsmadeeasy.api.IntegrationTestsExtension;
 import app.mealsmadeeasy.api.recipe.Recipe;
-import app.mealsmadeeasy.api.recipe.RecipeException;
 import app.mealsmadeeasy.api.recipe.RecipeService;
 import app.mealsmadeeasy.api.recipe.spec.RecipeCreateSpec;
 import app.mealsmadeeasy.api.user.User;
@@ -63,7 +62,6 @@ public class RecipeStarServiceTests {
                 recipe.getSlug(),
                 starer
         ));
-        //noinspection DataFlowIssue
         assertThat(star.getTimestamp(), is(notNullValue()));
     }
 
@@ -76,12 +74,11 @@ public class RecipeStarServiceTests {
                 recipe.getId(),
                 starer.getId()
         ));
-        //noinspection DataFlowIssue
         assertThat(star.getTimestamp(), is(notNullValue()));
     }
 
     @Test
-    public void find() throws RecipeException {
+    public void find() {
         final User owner = this.seedUser();
         final User starer = this.seedUser();
         final Recipe recipe = this.seedRecipe(owner);

src/main/java/app/mealsmadeeasy/api/image/ImageController.java

@@ -1,12 +1,14 @@
 package app.mealsmadeeasy.api.image;
 
 import app.mealsmadeeasy.api.image.body.ImageUpdateBody;
+import app.mealsmadeeasy.api.image.converter.ImageToViewConverter;
 import app.mealsmadeeasy.api.image.spec.ImageCreateSpec;
 import app.mealsmadeeasy.api.image.spec.ImageUpdateSpec;
 import app.mealsmadeeasy.api.image.view.ImageView;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.user.UserService;
 import app.mealsmadeeasy.api.util.AccessDeniedView;
+import lombok.RequiredArgsConstructor;
 import org.springframework.core.io.InputStreamResource;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -24,15 +26,12 @@ import java.util.stream.Collectors;
 
 @RestController
 @RequestMapping("/images")
+@RequiredArgsConstructor
 public class ImageController {
 
     private final ImageService imageService;
     private final UserService userService;
-
+    private final ImageToViewConverter imageToViewConverter;
-    public ImageController(ImageService imageService, UserService userService) {
-        this.imageService = imageService;
-        this.userService = userService;
-    }
 
     private ImageUpdateSpec getImageUpdateSpec(ImageUpdateBody body) {
         final var builder = ImageUpdateSpec.builder()
@@ -73,7 +72,7 @@ public class ImageController {
             @AuthenticationPrincipal User principal,
             @PathVariable String username,
             @PathVariable String filename
-    ) throws ImageException, IOException {
+    ) throws IOException {
         final User owner = this.userService.getUser(username);
         final Image image = this.imageService.getByOwnerAndFilename(owner, filename, principal);
         final InputStream imageInputStream = this.imageService.getImageContent(image, principal);
@@ -110,7 +109,7 @@ public class ImageController {
                 image.getSize(),
                 specBuilder.build()
         );
-        return ResponseEntity.status(201).body(this.imageService.toImageView(saved, principal));
+        return ResponseEntity.status(201).body(this.imageToViewConverter.convert(saved, principal, true));
     }
 
     @PostMapping("/{username}/{filename}")
@@ -119,14 +118,14 @@ public class ImageController {
             @PathVariable String username,
             @PathVariable String filename,
             @RequestBody ImageUpdateBody body
-    ) throws ImageException {
+    ) {
         if (principal == null) {
             throw new AccessDeniedException("Must be logged in.");
         }
         final User owner = this.userService.getUser(username);
         final Image image = this.imageService.getByOwnerAndFilename(owner, filename, principal);
         final Image updated = this.imageService.update(image, principal, this.getImageUpdateSpec(body));
-        return ResponseEntity.ok(this.imageService.toImageView(updated, principal));
+        return ResponseEntity.ok(this.imageToViewConverter.convert(updated, principal, true));
     }
 
     @DeleteMapping("/{username}/{filename}")
@@ -134,7 +133,7 @@ public class ImageController {
             @AuthenticationPrincipal User principal,
             @PathVariable String username,
             @PathVariable String filename
-    ) throws ImageException, IOException {
+    ) throws IOException {
         if (principal == null) {
             throw new AccessDeniedException("Must be logged in.");
         }

src/main/java/app/mealsmadeeasy/api/image/ImageException.java

@@ -3,9 +3,6 @@ package app.mealsmadeeasy.api.image;
 public class ImageException extends Exception {
 
     public enum Type {
-        INVALID_ID,
-        INVALID_USERNAME_OR_FILENAME,
-        IMAGE_NOT_FOUND,
         UNSUPPORTED_IMAGE_TYPE,
     }
 

src/main/java/app/mealsmadeeasy/api/image/ImageSecurityImpl.java

@@ -1,6 +1,7 @@
 package app.mealsmadeeasy.api.image;
 
 import app.mealsmadeeasy.api.user.User;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.springframework.stereotype.Component;
 
@@ -16,7 +17,7 @@ public class ImageSecurityImpl implements ImageSecurity {
     }
 
     @Override
-    public boolean isViewableBy(Image image, @Nullable User viewer) {
+    public boolean isViewableBy(@NotNull Image image, @Nullable User viewer) {
         if (image.getIsPublic()) {
             // public image
             return true;
@@ -40,7 +41,7 @@ public class ImageSecurityImpl implements ImageSecurity {
     }
 
     @Override
-    public boolean isOwner(Image image, @Nullable User user) {
+    public boolean isOwner(@NotNull Image image, @Nullable User user) {
         return image.getOwner() != null && user != null && Objects.equals(image.getOwner().getId(), user.getId());
     }
 

src/main/java/app/mealsmadeeasy/api/image/ImageService.java

@@ -2,7 +2,6 @@ package app.mealsmadeeasy.api.image;
 
 import app.mealsmadeeasy.api.image.spec.ImageCreateSpec;
 import app.mealsmadeeasy.api.image.spec.ImageUpdateSpec;
-import app.mealsmadeeasy.api.image.view.ImageView;
 import app.mealsmadeeasy.api.user.User;
 import org.jetbrains.annotations.Nullable;
 
@@ -15,9 +14,9 @@ public interface ImageService {
     Image create(User owner, String userFilename, InputStream inputStream, long objectSize, ImageCreateSpec infoSpec)
             throws IOException, ImageException;
 
-    Image getById(Integer id, @Nullable User viewer) throws ImageException;
+    Image getById(Integer id, @Nullable User viewer);
-    Image getByOwnerAndFilename(User owner, String filename, User viewer) throws ImageException;
+    Image getByOwnerAndFilename(User owner, String filename, User viewer);
-    Image getByUsernameAndFilename(String username, String filename, User viewer) throws ImageException;
+    Image getByUsernameAndFilename(String username, String filename, User viewer);
 
     InputStream getImageContent(Image image, @Nullable User viewer) throws IOException;
     List<Image> getImagesOwnedBy(User user);
@@ -26,6 +25,4 @@ public interface ImageService {
 
     void deleteImage(Image image, User modifier) throws IOException;
 
-    ImageView toImageView(Image image, @Nullable User viewer);
-
 }

src/main/java/app/mealsmadeeasy/api/image/S3ImageService.java

@@ -2,10 +2,11 @@ package app.mealsmadeeasy.api.image;
 
 import app.mealsmadeeasy.api.image.spec.ImageCreateSpec;
 import app.mealsmadeeasy.api.image.spec.ImageUpdateSpec;
-import app.mealsmadeeasy.api.image.view.ImageView;
 import app.mealsmadeeasy.api.s3.S3Manager;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.util.MimeTypeService;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithUsernameAndFilenameException;
 import org.jetbrains.annotations.Nullable;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.security.access.prepost.PostAuthorize;
@@ -27,20 +28,17 @@ public class S3ImageService implements ImageService {
     private final S3Manager s3Manager;
     private final ImageRepository imageRepository;
     private final String imageBucketName;
-    private final String baseUrl;
     private final MimeTypeService mimeTypeService;
 
     public S3ImageService(
             S3Manager s3Manager,
             ImageRepository imageRepository,
             @Value("${app.mealsmadeeasy.api.images.bucketName}") String imageBucketName,
-            @Value("${app.mealsmadeeasy.api.baseUrl}") String baseUrl,
             MimeTypeService mimeTypeService
     ) {
         this.s3Manager = s3Manager;
         this.imageRepository = imageRepository;
         this.imageBucketName = imageBucketName;
-        this.baseUrl = baseUrl;
         this.mimeTypeService = mimeTypeService;
     }
 
@@ -164,42 +162,38 @@ public class S3ImageService implements ImageService {
 
     @Override
     @PostAuthorize("@imageSecurity.isViewableBy(returnObject, #viewer)")
-    public Image getById(Integer id, @Nullable User viewer) throws ImageException {
+    public Image getById(Integer id, @Nullable User viewer) {
-        return this.imageRepository.findById(id).orElseThrow(() -> new ImageException(
+        return this.imageRepository.findById(id).orElseThrow(() -> new NoSuchEntityWithIdException(Image.class, id));
-                ImageException.Type.INVALID_ID, "No Image with id: " + id
+    }
+
+    @Override
+    @PostAuthorize("@imageSecurity.isViewableBy(returnObject, #viewer)")
+    public Image getByOwnerAndFilename(User owner, String filename, User viewer) {
+        return this.imageRepository.findByOwnerAndUserFilename(owner, filename)
+                .orElseThrow(() -> new NoSuchEntityWithUsernameAndFilenameException(
+                        Image.class,
+                        owner.getUsername(),
+                        filename
                 ));
     }
 
     @Override
     @PostAuthorize("@imageSecurity.isViewableBy(returnObject, #viewer)")
-    public Image getByOwnerAndFilename(User owner, String filename, User viewer) throws ImageException {
+    public Image getByUsernameAndFilename(String username, String filename, User viewer) {
-        return this.imageRepository.findByOwnerAndUserFilename((User) owner, filename)
-                .orElseThrow(() -> new ImageException(
-                        ImageException.Type.IMAGE_NOT_FOUND,
-                        "No such image for owner " + owner + " with filename " + filename
-                ));
-    }
-
-    @Override
-    @PostAuthorize("@imageSecurity.isViewableBy(returnObject, #viewer)")
-    public Image getByUsernameAndFilename(String username, String filename, User viewer) throws ImageException {
         return this.imageRepository.findByOwnerUsernameAndFilename(username, filename).orElseThrow(
-                () -> new ImageException(
+                () -> new NoSuchEntityWithUsernameAndFilenameException(Image.class, username, filename)
-                        ImageException.Type.INVALID_USERNAME_OR_FILENAME,
-                        "No such Image for username " + username + " and filename " + filename
-                )
         );
     }
 
     @Override
     @PreAuthorize("@imageSecurity.isViewableBy(#image, #viewer)")
     public InputStream getImageContent(Image image, User viewer) throws IOException {
-        return this.s3Manager.load(this.imageBucketName, ((Image) image).getObjectName());
+        return this.s3Manager.load(this.imageBucketName, image.getObjectName());
     }
 
     @Override
     public List<Image> getImagesOwnedBy(User user) {
-        return new ArrayList<>(this.imageRepository.findAllByOwner((User) user));
+        return new ArrayList<>(this.imageRepository.findAllByOwner(user));
     }
 
     @Override
@@ -219,17 +213,4 @@ public class S3ImageService implements ImageService {
         this.s3Manager.delete("images", image.getObjectName());
     }
 
-    private String getImageUrl(Image image) {
-        return this.baseUrl + "/images/" + image.getOwner().getUsername() + "/" + image.getUserFilename();
-    }
-
-    @Override
-    public ImageView toImageView(Image image, @Nullable User viewer) {
-        if (viewer != null && image.getOwner().getUsername().equals(viewer.getUsername())) {
-            return ImageView.from(image, this.getImageUrl(image), true);
-        } else {
-            return ImageView.from(image, this.getImageUrl(image), false);
-        }
-    }
-
 }

src/main/java/app/mealsmadeeasy/api/image/converter/ImageToViewConverter.java

@@ -0,0 +1,54 @@
+package app.mealsmadeeasy.api.image.converter;
+
+import app.mealsmadeeasy.api.image.Image;
+import app.mealsmadeeasy.api.image.view.ImageView;
+import app.mealsmadeeasy.api.user.User;
+import app.mealsmadeeasy.api.user.view.UserInfoView;
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import java.util.stream.Collectors;
+
+@Component
+public class ImageToViewConverter {
+
+    private final String baseUrl;
+
+    public ImageToViewConverter(@Value("${app.mealsmadeeasy.api.baseUrl}") String baseUrl) {
+        this.baseUrl = baseUrl;
+    }
+
+    private String getImageUrl(Image image) {
+        return this.baseUrl + "/images/" + image.getOwner().getUsername() + "/" + image.getUserFilename();
+    }
+
+    @Contract("null, _, _ -> null")
+    public @Nullable ImageView convert(@Nullable Image image, @Nullable User viewer, boolean includeViewers) {
+        if (image == null) {
+            return null;
+        }
+        final var builder = ImageView.builder()
+                .url(this.getImageUrl(image))
+                .created(image.getCreated())
+                .modified(image.getModified())
+                .filename(image.getUserFilename())
+                .mimeType(image.getMimeType())
+                .alt(image.getAlt())
+                .caption(image.getCaption())
+                .owner(UserInfoView.from(image.getOwner()))
+                .isPublic(image.getIsPublic())
+                .height(image.getHeight())
+                .width(image.getWidth());
+        if (includeViewers) {
+            builder.viewers(
+                    image.getViewers().stream()
+                            .map(UserInfoView::from)
+                            .collect(Collectors.toSet())
+            );
+        }
+        return builder.build();
+    }
+
+}

src/main/java/app/mealsmadeeasy/api/image/view/ImageView.java

@@ -1,6 +1,5 @@
 package app.mealsmadeeasy.api.image.view;
 
-import app.mealsmadeeasy.api.image.Image;
 import app.mealsmadeeasy.api.user.view.UserInfoView;
 import lombok.Builder;
 import lombok.Value;
@@ -8,35 +7,10 @@ import org.jetbrains.annotations.Nullable;
 
 import java.time.OffsetDateTime;
 import java.util.Set;
-import java.util.stream.Collectors;
 
 @Value
 @Builder
 public class ImageView {
-
-    public static ImageView from(Image image, String url, boolean includeViewers) {
-        final var builder = ImageView.builder()
-                .url(url)
-                .created(image.getCreated())
-                .modified(image.getModified())
-                .filename(image.getUserFilename())
-                .mimeType(image.getMimeType())
-                .alt(image.getAlt())
-                .caption(image.getCaption())
-                .owner(UserInfoView.from(image.getOwner()))
-                .isPublic(image.getIsPublic())
-                .height(image.getHeight())
-                .width(image.getWidth());
-        if (includeViewers) {
-            builder.viewers(
-                    image.getViewers().stream()
-                            .map(UserInfoView::from)
-                            .collect(Collectors.toSet())
-            );
-        }
-        return builder.build();
-    }
-
     String url;
     OffsetDateTime created;
     @Nullable OffsetDateTime modified;
@@ -49,5 +23,4 @@ public class ImageView {
     @Nullable Integer height;
     @Nullable Integer width;
     @Nullable Set<UserInfoView> viewers;
-
 }

src/main/java/app/mealsmadeeasy/api/recipe/Recipe.java

@@ -71,7 +71,7 @@ public class Recipe {
             joinColumns = @JoinColumn(name = "recipe_id"),
             inverseJoinColumns = @JoinColumn(name = "viewer_id")
     )
-    private Set<User> viewers = new HashSet<>();
+    private Set<User> viewers = new HashSet<>(); // todo: see if we can get rid of this init
 
     @ManyToOne
     @JoinColumn(name = "main_image_id")
@@ -81,4 +81,14 @@ public class Recipe {
     @OneToOne(mappedBy = "recipe", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
     private RecipeEmbedding embedding;
 
+    @PrePersist
+    public void prePersist() {
+        this.created = OffsetDateTime.now();
+    }
+
+    @PreUpdate
+    public void preUpdate() {
+        this.modified = OffsetDateTime.now();
+    }
+
 }

src/main/java/app/mealsmadeeasy/api/recipe/RecipeDraftsController.java

@@ -2,18 +2,16 @@ package app.mealsmadeeasy.api.recipe;
 
 import app.mealsmadeeasy.api.file.File;
 import app.mealsmadeeasy.api.file.FileService;
-import app.mealsmadeeasy.api.image.ImageException;
-import app.mealsmadeeasy.api.image.ImageService;
-import app.mealsmadeeasy.api.image.view.ImageView;
 import app.mealsmadeeasy.api.recipe.body.RecipeDraftUpdateBody;
+import app.mealsmadeeasy.api.recipe.converter.RecipeDraftToViewConverter;
 import app.mealsmadeeasy.api.recipe.converter.RecipeDraftUpdateBodyToSpecConverter;
+import app.mealsmadeeasy.api.recipe.converter.RecipeToFullViewConverter;
 import app.mealsmadeeasy.api.recipe.spec.RecipeDraftUpdateSpec;
 import app.mealsmadeeasy.api.recipe.view.FullRecipeView;
 import app.mealsmadeeasy.api.recipe.view.RecipeDraftView;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.util.MustBeLoggedInException;
 import lombok.RequiredArgsConstructor;
-import org.jetbrains.annotations.Nullable;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
@@ -31,14 +29,9 @@ public class RecipeDraftsController {
 
     private final RecipeService recipeService;
     private final FileService fileService;
-    private final ImageService imageService;
     private final RecipeDraftUpdateBodyToSpecConverter updateBodyToSpecConverter;
-
+    private final RecipeDraftToViewConverter draftToViewConverter;
-    private @Nullable ImageView getImageView(RecipeDraft recipeDraft, User viewer) {
+    private final RecipeToFullViewConverter recipeToFullViewConverter;
-        return recipeDraft.getMainImage() != null
-                ? this.imageService.toImageView(recipeDraft.getMainImage(), viewer)
-                : null;
-    }
 
     @GetMapping
     public ResponseEntity<List<RecipeDraftView>> getAllDraftsForUser(@AuthenticationPrincipal User user) {
@@ -46,10 +39,10 @@ public class RecipeDraftsController {
             throw new MustBeLoggedInException();
         }
         final List<RecipeDraft> recipeDrafts = this.recipeService.getDrafts(user);
-        return ResponseEntity.ok(recipeDrafts.stream().map(recipeDraft -> {
+        return ResponseEntity.ok(recipeDrafts.stream()
-            final @Nullable ImageView mainImage = this.getImageView(recipeDraft, user);
+                .map(recipeDraft -> this.draftToViewConverter.convert(recipeDraft, user))
-            return RecipeDraftView.from(recipeDraft, mainImage);
+                .toList()
-        }).toList());
+        );
     }
 
     @GetMapping("/{id}")
@@ -61,8 +54,7 @@ public class RecipeDraftsController {
             throw new MustBeLoggedInException();
         }
         final RecipeDraft recipeDraft = this.recipeService.getDraftByIdWithViewer(id, viewer);
-        final @Nullable ImageView imageView = this.getImageView(recipeDraft, viewer);
+        return ResponseEntity.ok(this.draftToViewConverter.convert(recipeDraft, viewer));
-        return ResponseEntity.ok(RecipeDraftView.from(recipeDraft, imageView));
     }
 
     @PostMapping("/manual")
@@ -71,8 +63,7 @@ public class RecipeDraftsController {
             throw new MustBeLoggedInException();
         }
         final RecipeDraft recipeDraft = this.recipeService.createDraft(owner);
-        final ImageView imageView = this.getImageView(recipeDraft, owner);
+        return ResponseEntity.ok(this.draftToViewConverter.convert(recipeDraft, owner));
-        return ResponseEntity.ok(RecipeDraftView.from(recipeDraft, imageView));
     }
 
     @PostMapping("/ai")
@@ -91,8 +82,7 @@ public class RecipeDraftsController {
                 owner
         );
         final RecipeDraft recipeDraft = this.recipeService.createAiDraft(file, owner);
-        final @Nullable ImageView mainImageView = this.getImageView(recipeDraft, owner);
+        return ResponseEntity.status(HttpStatus.CREATED).body(this.draftToViewConverter.convert(recipeDraft, owner));
-        return ResponseEntity.status(HttpStatus.CREATED).body(RecipeDraftView.from(recipeDraft, mainImageView));
     }
 
     @PutMapping("/{id}")
@@ -100,14 +90,13 @@ public class RecipeDraftsController {
             @AuthenticationPrincipal User modifier,
             @PathVariable UUID id,
             @RequestBody RecipeDraftUpdateBody updateBody
-    ) throws ImageException {
+    ) {
         if (modifier == null) {
             throw new MustBeLoggedInException();
         }
         final RecipeDraftUpdateSpec spec = this.updateBodyToSpecConverter.convert(updateBody, modifier);
         final RecipeDraft updated = this.recipeService.updateDraft(id, spec, modifier);
-        final @Nullable ImageView imageView = this.getImageView(updated, modifier);
+        return ResponseEntity.ok(this.draftToViewConverter.convert(updated, modifier));
-        return ResponseEntity.ok(RecipeDraftView.from(updated, imageView));
     }
 
     @DeleteMapping("/{id}")
@@ -131,7 +120,7 @@ public class RecipeDraftsController {
             throw new MustBeLoggedInException();
         }
         final Recipe recipe = this.recipeService.publishDraft(id, modifier);
-        final FullRecipeView view = this.recipeService.toFullRecipeView(recipe, false, modifier);
+        final FullRecipeView view = this.recipeToFullViewConverter.convert(recipe, false, modifier);
         return ResponseEntity.status(HttpStatus.CREATED).body(view);
     }
 

src/main/java/app/mealsmadeeasy/api/recipe/RecipeException.java

@@ -1,27 +0,0 @@
-package app.mealsmadeeasy.api.recipe;
-
-public class RecipeException extends Exception {
-
-    public enum Type {
-        INVALID_USERNAME_OR_SLUG,
-        INVALID_ID,
-        INVALID_COMMENT_ID
-    }
-
-    private final Type type;
-
-    public RecipeException(Type type, String message, Throwable cause) {
-        super(message, cause);
-        this.type = type;
-    }
-
-    public RecipeException(Type type, String message) {
-        super(message);
-        this.type = type;
-    }
-
-    public Type getType() {
-        return this.type;
-    }
-
-}

src/main/java/app/mealsmadeeasy/api/recipe/RecipeRepository.java

@@ -12,7 +12,7 @@ import java.util.Optional;
 
 public interface RecipeRepository extends JpaRepository<Recipe, Integer> {
 
-    List<Recipe> findAllByIsPublicIsTrue();
+    Slice<Recipe> findAllByIsPublicIsTrue(Pageable pageable);
 
     List<Recipe> findAllByViewersContaining(User viewer);
 

src/main/java/app/mealsmadeeasy/api/recipe/RecipeSecurity.java

@@ -1,6 +1,8 @@
 package app.mealsmadeeasy.api.recipe;
 
 import app.mealsmadeeasy.api.user.User;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithUsernameAndSlugException;
 import org.jetbrains.annotations.Nullable;
 import org.springframework.stereotype.Component;
 
@@ -19,25 +21,21 @@ public class RecipeSecurity {
         return recipe.getOwner() != null && recipe.getOwner().getId().equals(user.getId());
     }
 
-    public boolean isOwner(Integer recipeId, User user) throws RecipeException {
+    public boolean isOwner(Integer recipeId, User user) {
-        final Recipe recipe = this.recipeRepository.findById(recipeId).orElseThrow(() -> new RecipeException(
+        final Recipe recipe = this.recipeRepository.findById(recipeId).orElseThrow(
-                RecipeException.Type.INVALID_ID,
+                () -> new NoSuchEntityWithIdException(Recipe.class, recipeId)
-                "No such Recipe with id " + recipeId
-        ));
-        return this.isOwner(recipe, user);
-    }
-
-    public boolean isOwner(String username, String slug, @Nullable User user) throws RecipeException {
-        final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(
-                () -> new RecipeException(
-                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
-                        "No such Recipe for username " + username + " and slug " + slug
-                )
         );
         return this.isOwner(recipe, user);
     }
 
-    public boolean isViewableBy(Recipe recipe, @Nullable User user) throws RecipeException {
+    public boolean isOwner(String username, String slug, @Nullable User user) {
+        final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(
+                () -> new NoSuchEntityWithUsernameAndSlugException(Recipe.class, username, slug)
+        );
+        return this.isOwner(recipe, user);
+    }
+
+    public boolean isViewableBy(Recipe recipe, @Nullable User user) {
         if (recipe.getIsPublic()) {
             // public recipe
             return true;
@@ -50,9 +48,7 @@ public class RecipeSecurity {
         } else {
             // check if viewer
             final Recipe withViewers = this.recipeRepository.findByIdWithViewers(recipe.getId())
-                    .orElseThrow(() -> new RecipeException(
+                    .orElseThrow(() -> new NoSuchEntityWithIdException(Recipe.class, recipe.getId()));
-                            RecipeException.Type.INVALID_ID, "No such Recipe with id: " + recipe.getId()
-                    ));
             for (final User viewer : withViewers.getViewers()) {
                 if (viewer.getId() != null && viewer.getId().equals(user.getId())) {
                     return true;
@@ -63,20 +59,16 @@ public class RecipeSecurity {
         return false;
     }
 
-    public boolean isViewableBy(String ownerUsername, String slug, @Nullable User user) throws RecipeException {
+    public boolean isViewableBy(String ownerUsername, String slug, @Nullable User user) {
         final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(ownerUsername, slug)
-                .orElseThrow(() -> new RecipeException(
+                .orElseThrow(() -> new NoSuchEntityWithUsernameAndSlugException(Recipe.class, ownerUsername, slug));
-                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
-                        "No such Recipe for username " + ownerUsername + " and slug: " + slug
-                ));
         return this.isViewableBy(recipe, user);
     }
 
-    public boolean isViewableBy(Integer recipeId, @Nullable User user) throws RecipeException {
+    public boolean isViewableBy(Integer recipeId, @Nullable User user) {
-        final Recipe recipe = this.recipeRepository.findById(recipeId).orElseThrow(() -> new RecipeException(
+        final Recipe recipe = this.recipeRepository.findById(recipeId).orElseThrow(
-                RecipeException.Type.INVALID_ID,
+                () -> new NoSuchEntityWithIdException(Recipe.class, recipeId)
-                "No such Recipe with id: " + recipeId
+        );
-        ));
         return this.isViewableBy(recipe, user);
     }
 

src/main/java/app/mealsmadeeasy/api/recipe/RecipeService.java

@@ -2,9 +2,7 @@ package app.mealsmadeeasy.api.recipe;
 
 import app.mealsmadeeasy.api.file.File;
 import app.mealsmadeeasy.api.image.Image;
-import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.image.ImageService;
-import app.mealsmadeeasy.api.image.view.ImageView;
 import app.mealsmadeeasy.api.job.JobService;
 import app.mealsmadeeasy.api.markdown.MarkdownService;
 import app.mealsmadeeasy.api.recipe.body.RecipeAiSearchBody;
@@ -14,18 +12,16 @@ import app.mealsmadeeasy.api.recipe.spec.RecipeCreateSpec;
 import app.mealsmadeeasy.api.recipe.spec.RecipeDraftUpdateSpec;
 import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.star.RecipeStarRepository;
-import app.mealsmadeeasy.api.recipe.view.FullRecipeView;
-import app.mealsmadeeasy.api.recipe.view.RecipeInfoView;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithUsernameAndSlugException;
 import jakarta.transaction.Transactional;
-import org.jetbrains.annotations.ApiStatus;
+import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.Nullable;
 import org.springframework.ai.embedding.EmbeddingModel;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
-import org.springframework.security.access.AccessDeniedException;
 import org.springframework.security.access.prepost.PostAuthorize;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.stereotype.Service;
@@ -37,6 +33,7 @@ import java.util.Set;
 import java.util.UUID;
 
 @Service
+@RequiredArgsConstructor
 public class RecipeService {
 
     private final RecipeRepository recipeRepository;
@@ -47,28 +44,7 @@ public class RecipeService {
     private final RecipeDraftRepository recipeDraftRepository;
     private final JobService jobService;
 
-    public RecipeService(
+    public Recipe create(User owner, RecipeCreateSpec spec) {
-            RecipeRepository recipeRepository,
-            RecipeStarRepository recipeStarRepository,
-            ImageService imageService,
-            MarkdownService markdownService,
-            EmbeddingModel embeddingModel,
-            RecipeDraftRepository recipeDraftRepository,
-            JobService jobService
-    ) {
-        this.recipeRepository = recipeRepository;
-        this.recipeStarRepository = recipeStarRepository;
-        this.imageService = imageService;
-        this.markdownService = markdownService;
-        this.embeddingModel = embeddingModel;
-        this.recipeDraftRepository = recipeDraftRepository;
-        this.jobService = jobService;
-    }
-
-    public Recipe create(@Nullable User owner, RecipeCreateSpec spec) {
-        if (owner == null) {
-            throw new AccessDeniedException("Must be logged in.");
-        }
         final Recipe draft = new Recipe();
         draft.setCreated(OffsetDateTime.now());
         draft.setOwner(owner);
@@ -80,34 +56,33 @@ public class RecipeService {
         return this.recipeRepository.save(draft);
     }
 
-    private Recipe findRecipeEntity(Integer id) throws RecipeException {
+    private Recipe getById(Integer id) {
-        return this.recipeRepository.findById(id).orElseThrow(() -> new RecipeException(
+        return this.recipeRepository.findById(id).orElseThrow(() -> new NoSuchEntityWithIdException(Recipe.class, id));
-                RecipeException.Type.INVALID_ID, "No such Recipe with id: " + id
+    }
-        ));
+
+    private Recipe getByUsernameAndSlug(String username, String slug) {
+        return this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(
+                () -> new NoSuchEntityWithUsernameAndSlugException(Recipe.class, username, slug)
+        );
     }
 
     @PostAuthorize("@recipeSecurity.isViewableBy(returnObject, #viewer)")
-    public Recipe getById(Integer id, @Nullable User viewer) throws RecipeException {
+    public Recipe getById(Integer id, @Nullable User viewer) {
-        return this.findRecipeEntity(id);
+        return this.getById(id);
     }
 
     @PostAuthorize("@recipeSecurity.isViewableBy(returnObject, #viewer)")
-    public Recipe getByIdWithStars(Integer id, @Nullable User viewer) throws RecipeException {
+    public Recipe getByIdWithStars(Integer id, @Nullable User viewer) {
-        return this.recipeRepository.findByIdWithStars(id).orElseThrow(() -> new RecipeException(
+        return this.recipeRepository.findByIdWithStars(id).orElseThrow(
-                RecipeException.Type.INVALID_ID,
+                () -> new NoSuchEntityWithIdException(Recipe.class, id)
-                "No such Recipe with id: " + id
+        );
-        ));
     }
 
     @PostAuthorize("@recipeSecurity.isViewableBy(returnObject, #viewer)")
-    public Recipe getByUsernameAndSlug(String username, String slug, @Nullable User viewer) throws RecipeException {
+    public Recipe getByUsernameAndSlug(String username, String slug, @Nullable User viewer) {
-        return this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(() -> new RecipeException(
+        return this.getByUsernameAndSlug(username, slug);
-                RecipeException.Type.INVALID_USERNAME_OR_SLUG,
-                "No such Recipe for username " + username + " and slug " + slug
-        ));
     }
 
-    @ApiStatus.Internal
     public String getRenderedMarkdown(Recipe entity) {
         if (entity.getCachedRenderedText() == null) {
             entity.setCachedRenderedText(this.markdownService.renderAndCleanMarkdown(entity.getRawText()));
@@ -116,69 +91,16 @@ public class RecipeService {
         return entity.getCachedRenderedText();
     }
 
-    private int getStarCount(Recipe recipe) {
+    public int getStarCount(Recipe recipe) {
         return this.recipeRepository.getStarCount(recipe.getId());
     }
 
-    private int getViewerCount(long recipeId) {
+    public int getViewerCount(Recipe recipe) {
-        return this.recipeRepository.getViewerCount(recipeId);
+        return this.recipeRepository.getViewerCount(recipe.getId());
     }
 
-    @Contract("null, _ -> null")
+    public Slice<Recipe> getViewableBy(Pageable pageable, User viewer) {
-    private @Nullable ImageView getImageView(@Nullable Image image, @Nullable User viewer) {
+        return this.recipeRepository.findAllViewableBy(viewer, pageable);
-        if (image != null) {
-            return this.imageService.toImageView(image, viewer);
-        } else {
-            return null;
-        }
-    }
-
-    private FullRecipeView getFullView(Recipe recipe, boolean includeRawText, @Nullable User viewer) {
-        return FullRecipeView.from(
-                recipe,
-                this.getRenderedMarkdown(recipe),
-                includeRawText,
-                this.getStarCount(recipe),
-                this.getViewerCount(recipe.getId()),
-                this.getImageView(recipe.getMainImage(), viewer)
-        );
-    }
-
-    private RecipeInfoView getInfoView(Recipe recipe, @Nullable User viewer) {
-        return RecipeInfoView.from(
-                recipe,
-                this.getStarCount(recipe),
-                this.getImageView(recipe.getMainImage(), viewer)
-        );
-    }
-
-    @PreAuthorize("@recipeSecurity.isViewableBy(#id, #viewer)")
-    public FullRecipeView getFullViewById(Integer id, @Nullable User viewer) throws RecipeException {
-        final Recipe recipe = this.recipeRepository.findById(id).orElseThrow(() -> new RecipeException(
-                RecipeException.Type.INVALID_ID, "No such Recipe for id: " + id
-        ));
-        return this.getFullView(recipe, false, viewer);
-    }
-
-    @PreAuthorize("@recipeSecurity.isViewableBy(#username, #slug, #viewer)")
-    public FullRecipeView getFullViewByUsernameAndSlug(
-            String username,
-            String slug,
-            boolean includeRawText,
-            @Nullable User viewer
-    ) throws RecipeException {
-        final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(username, slug)
-                .orElseThrow(() -> new RecipeException(
-                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
-                        "No such Recipe for username " + username + " and slug: " + slug
-                ));
-        return this.getFullView(recipe, includeRawText, viewer);
-    }
-
-    public Slice<RecipeInfoView> getInfoViewsViewableBy(Pageable pageable, @Nullable User viewer) {
-        return this.recipeRepository.findAllViewableBy(viewer, pageable).map(recipe ->
-                this.getInfoView(recipe, viewer)
-        );
     }
 
     public List<Recipe> getByMinimumStars(long minimumStars, @Nullable User viewer) {
@@ -187,19 +109,11 @@ public class RecipeService {
         );
     }
 
-    public List<Recipe> getPublicRecipes() {
+    public Slice<Recipe> getPublicRecipes(Pageable pageable) {
-        return List.copyOf(this.recipeRepository.findAllByIsPublicIsTrue());
+        return this.recipeRepository.findAllByIsPublicIsTrue(pageable);
     }
 
-    public List<Recipe> getRecipesViewableBy(User viewer) {
+    public List<Recipe> aiSearch(RecipeAiSearchBody searchSpec, @Nullable User viewer) {
-        return List.copyOf(this.recipeRepository.findAllByViewersContaining(viewer));
-    }
-
-    public List<Recipe> getRecipesOwnedBy(User owner) {
-        return List.copyOf(this.recipeRepository.findAllByOwner(owner));
-    }
-
-    public List<RecipeInfoView> aiSearch(RecipeAiSearchBody searchSpec, @Nullable User viewer) {
         final float[] queryEmbedding = this.embeddingModel.embed(searchSpec.getPrompt());
         final List<Recipe> results;
         if (viewer == null) {
@@ -207,12 +121,10 @@ public class RecipeService {
         } else {
             results = this.recipeRepository.searchByEmbeddingAndViewableBy(queryEmbedding, 0.5f, viewer.getId());
         }
-        return results.stream()
+        return results;
-                .map(recipeEntity -> this.getInfoView(recipeEntity, viewer))
-                .toList();
     }
 
-    private void prepareForUpdate(RecipeUpdateSpec spec, Recipe recipe, User modifier) throws ImageException {
+    private void prepareForUpdate(RecipeUpdateSpec spec, Recipe recipe, User modifier) {
         boolean didUpdate = false;
         if (spec.getTitle() != null) {
             recipe.setTitle(spec.getTitle());
@@ -258,23 +170,17 @@ public class RecipeService {
     }
 
     @PreAuthorize("@recipeSecurity.isOwner(#username, #slug, #modifier)")
-    public Recipe update(String username, String slug, RecipeUpdateSpec spec, User modifier)
+    public Recipe update(String username, String slug, RecipeUpdateSpec spec, User modifier) {
-            throws RecipeException, ImageException {
+        final Recipe recipe = this.getByUsernameAndSlug(username, slug);
-        final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(username, slug).orElseThrow(() ->
-                new RecipeException(
-                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
-                        "No such Recipe for username " + username + " and slug: " + slug
-                )
-        );
         this.prepareForUpdate(spec, recipe, modifier);
         return this.recipeRepository.save(recipe);
     }
 
     @PreAuthorize("@recipeSecurity.isOwner(#id, #modifier)")
-    public Recipe addViewer(Integer id, User modifier, User viewer) throws RecipeException {
+    public Recipe addViewer(Integer id, User modifier, User viewer) {
-        final Recipe entity = this.recipeRepository.findByIdWithViewers(id).orElseThrow(() -> new RecipeException(
+        final Recipe entity = this.recipeRepository.findByIdWithViewers(id).orElseThrow(
-                RecipeException.Type.INVALID_ID, "No such Recipe with id: " + id
+                () -> new NoSuchEntityWithIdException(Recipe.class, id)
-        ));
+        );
         final Set<User> viewers = new HashSet<>(entity.getViewers());
         viewers.add(viewer);
         entity.setViewers(viewers);
@@ -282,8 +188,8 @@ public class RecipeService {
     }
 
     @PreAuthorize("@recipeSecurity.isOwner(#id, #modifier)")
-    public Recipe removeViewer(Integer id, User modifier, User viewer) throws RecipeException {
+    public Recipe removeViewer(Integer id, User modifier, User viewer) {
-        final Recipe entity = this.findRecipeEntity(id);
+        final Recipe entity = this.getById(id);
         final Set<User> viewers = new HashSet<>(entity.getViewers());
         viewers.remove(viewer);
         entity.setViewers(viewers);
@@ -291,8 +197,8 @@ public class RecipeService {
     }
 
     @PreAuthorize("@recipeSecurity.isOwner(#id, #modifier)")
-    public Recipe clearAllViewers(Integer id, User modifier) throws RecipeException {
+    public Recipe clearAllViewers(Integer id, User modifier) {
-        final Recipe entity = this.findRecipeEntity(id);
+        final Recipe entity = this.getById(id);
         entity.setViewers(new HashSet<>());
         return this.recipeRepository.save(entity);
     }
@@ -302,14 +208,6 @@ public class RecipeService {
         this.recipeRepository.deleteById(id);
     }
 
-    public FullRecipeView toFullRecipeView(Recipe recipe, boolean includeRawText, @Nullable User viewer) {
-        return this.getFullView(recipe, includeRawText, viewer);
-    }
-
-    public RecipeInfoView toRecipeInfoView(Recipe recipe, @Nullable User viewer) {
-        return this.getInfoView(recipe, viewer);
-    }
-
     @PreAuthorize("@recipeSecurity.isViewableBy(#username, #slug, #viewer)")
     @Contract("_, _, null -> null")
     public @Nullable Boolean isStarer(String username, String slug, @Nullable User viewer) {

src/main/java/app/mealsmadeeasy/api/recipe/RecipesController.java

@@ -1,6 +1,5 @@
 package app.mealsmadeeasy.api.recipe;
 
-import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.recipe.body.RecipeAiSearchBody;
 import app.mealsmadeeasy.api.recipe.body.RecipeSearchBody;
 import app.mealsmadeeasy.api.recipe.body.RecipeUpdateBody;
@@ -8,15 +7,17 @@ import app.mealsmadeeasy.api.recipe.comment.RecipeComment;
 import app.mealsmadeeasy.api.recipe.comment.RecipeCommentCreateBody;
 import app.mealsmadeeasy.api.recipe.comment.RecipeCommentService;
 import app.mealsmadeeasy.api.recipe.comment.RecipeCommentView;
+import app.mealsmadeeasy.api.recipe.converter.RecipeToFullViewConverter;
+import app.mealsmadeeasy.api.recipe.converter.RecipeToInfoViewConverter;
 import app.mealsmadeeasy.api.recipe.spec.RecipeUpdateSpec;
 import app.mealsmadeeasy.api.recipe.star.RecipeStar;
 import app.mealsmadeeasy.api.recipe.star.RecipeStarService;
 import app.mealsmadeeasy.api.recipe.view.FullRecipeView;
-import app.mealsmadeeasy.api.recipe.view.RecipeExceptionView;
 import app.mealsmadeeasy.api.recipe.view.RecipeInfoView;
 import app.mealsmadeeasy.api.sliceview.SliceViewService;
 import app.mealsmadeeasy.api.user.User;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.Nullable;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
@@ -32,6 +33,7 @@ import java.util.Map;
 
 @RestController
 @RequestMapping("/recipes")
+@RequiredArgsConstructor
 public class RecipesController {
 
     private final RecipeService recipeService;
@@ -39,32 +41,8 @@ public class RecipesController {
     private final RecipeCommentService recipeCommentService;
     private final SliceViewService sliceViewService;
     private final ObjectMapper objectMapper;
-
+    private final RecipeToFullViewConverter recipeToFullViewConverter;
-    public RecipesController(
+    private final RecipeToInfoViewConverter recipeToInfoViewConverter;
-            RecipeService recipeService,
-            RecipeStarService recipeStarService,
-            RecipeCommentService recipeCommentService,
-            SliceViewService sliceViewService,
-            ObjectMapper objectMapper
-    ) {
-        this.recipeService = recipeService;
-        this.recipeStarService = recipeStarService;
-        this.recipeCommentService = recipeCommentService;
-        this.sliceViewService = sliceViewService;
-        this.objectMapper = objectMapper;
-    }
-
-    @ExceptionHandler(RecipeException.class)
-    public ResponseEntity<RecipeExceptionView> onRecipeException(RecipeException recipeException) {
-        final HttpStatus status = switch (recipeException.getType()) {
-            case INVALID_ID, INVALID_USERNAME_OR_SLUG -> HttpStatus.NOT_FOUND;
-            case INVALID_COMMENT_ID -> HttpStatus.BAD_REQUEST;
-        };
-        return ResponseEntity.status(status.value()).body(new RecipeExceptionView(
-                recipeException.getType().toString(),
-                recipeException.getMessage()
-        ));
-    }
 
     private Map<String, Object> getFullViewWrapper(String username, String slug, FullRecipeView view, @Nullable User viewer) {
         Map<String, Object> wrapper = new HashMap<>();
@@ -80,13 +58,9 @@ public class RecipesController {
             @PathVariable String slug,
             @RequestParam(defaultValue = "false") boolean includeRawText,
             @AuthenticationPrincipal User viewer
-    ) throws RecipeException {
+    ) {
-        final FullRecipeView view = this.recipeService.getFullViewByUsernameAndSlug(
+        final Recipe recipe = this.recipeService.getByUsernameAndSlug(username, slug, viewer);
-                username,
+        final FullRecipeView view = this.recipeToFullViewConverter.convert(recipe, includeRawText, viewer);
-                slug,
-                includeRawText,
-                viewer
-        );
         return ResponseEntity.ok(this.getFullViewWrapper(username, slug, view, viewer));
     }
 
@@ -97,10 +71,10 @@ public class RecipesController {
             @RequestParam(defaultValue = "true") boolean includeRawText,
             @RequestBody RecipeUpdateBody updateBody,
             @AuthenticationPrincipal User principal
-    ) throws ImageException, RecipeException {
+    ) {
         final RecipeUpdateSpec spec = RecipeUpdateSpec.from(updateBody);
         final Recipe updated = this.recipeService.update(username, slug, spec, principal);
-        final FullRecipeView view = this.recipeService.toFullRecipeView(updated, includeRawText, principal);
+        final FullRecipeView view = this.recipeToFullViewConverter.convert(updated, includeRawText, principal);
         return ResponseEntity.ok(this.getFullViewWrapper(username, slug, view, principal));
     }
 
@@ -109,8 +83,19 @@ public class RecipesController {
             Pageable pageable,
             @AuthenticationPrincipal User user
     ) {
-        final Slice<RecipeInfoView> slice = this.recipeService.getInfoViewsViewableBy(pageable, user);
+        if (user == null) {
-        return ResponseEntity.ok(this.sliceViewService.getSliceView(slice));
+            final Slice<Recipe> publicRecipes = this.recipeService.getPublicRecipes(pageable);
+            final Slice<RecipeInfoView> publicRecipeInfoViews = publicRecipes.map(
+                    recipe -> this.recipeToInfoViewConverter.convert(recipe, null)
+            );
+            return ResponseEntity.ok(this.sliceViewService.getSliceView(publicRecipeInfoViews));
+        } else {
+            final Slice<Recipe> recipes = this.recipeService.getViewableBy(pageable, user);
+            final Slice<RecipeInfoView> recipeInfoViews = recipes.map(
+                    recipe -> this.recipeToInfoViewConverter.convert(recipe, user)
+            );
+            return ResponseEntity.ok(this.sliceViewService.getSliceView(recipeInfoViews));
+        }
     }
 
     @PostMapping
@@ -123,7 +108,10 @@ public class RecipesController {
                     recipeSearchBody.getData(),
                     RecipeAiSearchBody.class
             );
-            final List<RecipeInfoView> results = this.recipeService.aiSearch(spec, user);
+            final List<RecipeInfoView> results = this.recipeService.aiSearch(spec, user)
+                    .stream()
+                    .map(recipe -> this.recipeToInfoViewConverter.convert(recipe, user))
+                    .toList();
             return ResponseEntity.ok(Map.of("results", results));
         } else {
             throw new IllegalArgumentException("Invalid recipeSearchBody type: " + recipeSearchBody.getType());
@@ -135,7 +123,7 @@ public class RecipesController {
             @PathVariable String username,
             @PathVariable String slug,
             @Nullable @AuthenticationPrincipal User principal
-    ) throws RecipeException {
+    ) {
         if (principal == null) {
             throw new AccessDeniedException("Must be logged in to star a recipe.");
         }
@@ -147,7 +135,7 @@ public class RecipesController {
             @PathVariable String username,
             @PathVariable String slug,
             @Nullable @AuthenticationPrincipal User principal
-    ) throws RecipeException {
+    ) {
         if (principal == null) {
             throw new AccessDeniedException("Must be logged in to get a recipe star.");
         }
@@ -164,7 +152,7 @@ public class RecipesController {
             @PathVariable String username,
             @PathVariable String slug,
             @Nullable @AuthenticationPrincipal User principal
-    ) throws RecipeException {
+    ) {
         if (principal == null) {
             throw new AccessDeniedException("Must be logged in to delete a recipe star.");
         }
@@ -178,7 +166,7 @@ public class RecipesController {
             @PathVariable String slug,
             Pageable pageable,
             @Nullable @AuthenticationPrincipal User principal
-    ) throws RecipeException {
+    ) {
         final Slice<RecipeCommentView> slice = this.recipeCommentService.getComments(
                 username,
                 slug,
@@ -194,7 +182,7 @@ public class RecipesController {
             @PathVariable String slug,
             @RequestBody RecipeCommentCreateBody body,
             @Nullable @AuthenticationPrincipal User principal
-    ) throws RecipeException {
+    ) {
         if (principal == null) {
             throw new AccessDeniedException("Must be logged in to comment on a recipe.");
         }

src/main/java/app/mealsmadeeasy/api/recipe/comment/RecipeCommentService.java

@@ -1,16 +1,13 @@
 package app.mealsmadeeasy.api.recipe.comment;
 
-import app.mealsmadeeasy.api.recipe.RecipeException;
 import app.mealsmadeeasy.api.user.User;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
 
 public interface RecipeCommentService {
-    RecipeComment create(String recipeUsername, String recipeSlug, User owner, RecipeCommentCreateBody body)
+    RecipeComment create(String recipeUsername, String recipeSlug, User owner, RecipeCommentCreateBody body);
-            throws RecipeException;
+    RecipeComment get(Integer commentId, User viewer) ;
-    RecipeComment get(Integer commentId, User viewer) throws RecipeException;
+    Slice<RecipeCommentView> getComments(String recipeUsername, String recipeSlug, Pageable pageable, User viewer);
-    Slice<RecipeCommentView> getComments(String recipeUsername, String recipeSlug, Pageable pageable, User viewer)
+    RecipeComment update(Integer commentId, User viewer, RecipeCommentUpdateSpec spec) ;
-            throws RecipeException;
+    void delete(Integer commentId, User modifier) ;
-    RecipeComment update(Integer commentId, User viewer, RecipeCommentUpdateSpec spec) throws RecipeException;
-    void delete(Integer commentId, User modifier) throws RecipeException;
 }

src/main/java/app/mealsmadeeasy/api/recipe/comment/RecipeCommentServiceImpl.java

@@ -2,9 +2,10 @@ package app.mealsmadeeasy.api.recipe.comment;
 
 import app.mealsmadeeasy.api.markdown.MarkdownService;
 import app.mealsmadeeasy.api.recipe.Recipe;
-import app.mealsmadeeasy.api.recipe.RecipeException;
 import app.mealsmadeeasy.api.recipe.RecipeRepository;
 import app.mealsmadeeasy.api.user.User;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithIdException;
+import app.mealsmadeeasy.api.util.NoSuchEntityWithUsernameAndSlugException;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
 import org.springframework.security.access.prepost.PostAuthorize;
@@ -39,42 +40,43 @@ public class RecipeCommentServiceImpl implements RecipeCommentService {
             String recipeSlug,
             User commenter,
             RecipeCommentCreateBody body
-    ) throws RecipeException {
+    ) {
         requireNonNull(commenter);
         final RecipeComment draft = new RecipeComment();
         draft.setCreated(OffsetDateTime.now());
         draft.setRawText(body.getText());
         draft.setCachedRenderedText(this.markdownService.renderAndCleanMarkdown(body.getText()));
-        draft.setOwner((User) commenter);
+        draft.setOwner(commenter);
         final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(recipeUsername, recipeSlug)
-                .orElseThrow(() -> new RecipeException(
+                .orElseThrow(
-                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
+                        () -> new NoSuchEntityWithUsernameAndSlugException(Recipe.class, recipeUsername, recipeSlug)
-                        "Invalid username or slug: " + recipeUsername + "/" + recipeSlug
+                );
-                ));
         draft.setRecipe(recipe);
         return this.recipeCommentRepository.save(draft);
     }
 
     @PostAuthorize("@recipeSecurity.isViewableBy(returnObject.recipe, #viewer)")
-    private RecipeComment loadCommentEntity(Integer commentId, User viewer) throws RecipeException {
+    private RecipeComment loadCommentEntity(Integer commentId, User viewer) {
-        return this.recipeCommentRepository.findById(commentId).orElseThrow(() -> new RecipeException(
+        return this.recipeCommentRepository.findById(commentId).orElseThrow(
-                RecipeException.Type.INVALID_COMMENT_ID, "No such RecipeComment for id: " + commentId
+                () -> new NoSuchEntityWithIdException(RecipeComment.class, commentId)
-        ));
+        );
     }
 
     @Override
-    public RecipeComment get(Integer commentId, User viewer) throws RecipeException {
+    public RecipeComment get(Integer commentId, User viewer) {
         return this.loadCommentEntity(commentId, viewer);
     }
 
     @Override
     @PreAuthorize("@recipeSecurity.isViewableBy(#recipeUsername, #recipeSlug, #viewer)")
-    public Slice<RecipeCommentView> getComments(String recipeUsername, String recipeSlug, Pageable pageable, User viewer) throws RecipeException {
+    public Slice<RecipeCommentView> getComments(
+            String recipeUsername,
+            String recipeSlug,
+            Pageable pageable,
+            User viewer
+    ) {
         final Recipe recipe = this.recipeRepository.findByOwnerUsernameAndSlug(recipeUsername, recipeSlug).orElseThrow(
-                () -> new RecipeException(
+                () -> new NoSuchEntityWithUsernameAndSlugException(Recipe.class, recipeUsername, recipeSlug)
-                        RecipeException.Type.INVALID_USERNAME_OR_SLUG,
-                        "No such Recipe for username/slug: " + recipeUsername + "/" + recipeSlug
-                )
         );
         final Slice<RecipeComment> commentEntities = this.recipeCommentRepository.findAllByRecipe(recipe, pageable);
         return commentEntities.map(commentEntity -> RecipeCommentView.from(
@@ -84,21 +86,21 @@ public class RecipeCommentServiceImpl implements RecipeCommentService {
     }
 
     @Override
-    public RecipeComment update(Integer commentId, User viewer, RecipeCommentUpdateSpec spec) throws RecipeException {
+    public RecipeComment update(Integer commentId, User viewer, RecipeCommentUpdateSpec spec) {
         final RecipeComment entity = this.loadCommentEntity(commentId, viewer);
         entity.setRawText(spec.getRawText());
         return this.recipeCommentRepository.save(entity);
     }
 
     @PostAuthorize("@recipeSecurity.isOwner(returnObject.recipe, #modifier)")
-    private RecipeComment loadForDelete(Integer commentId, User modifier) throws RecipeException {
+    private RecipeComment loadForDelete(Integer commentId, User modifier) {
-        return this.recipeCommentRepository.findById(commentId).orElseThrow(() -> new RecipeException(
+        return this.recipeCommentRepository.findById(commentId).orElseThrow(() ->
-                RecipeException.Type.INVALID_COMMENT_ID, "No such RecipeComment for id: " + commentId
+                new NoSuchEntityWithIdException(RecipeComment.class, commentId)
-        ));
+        );
     }
 
     @Override
-    public void delete(Integer commentId, User modifier) throws RecipeException {
+    public void delete(Integer commentId, User modifier) {
         final RecipeComment entityToDelete = this.loadForDelete(commentId, modifier);
         this.recipeCommentRepository.delete(entityToDelete);
     }

src/main/java/app/mealsmadeeasy/api/recipe/converter/RecipeDraftToViewConverter.java

@@ -0,0 +1,39 @@
+package app.mealsmadeeasy.api.recipe.converter;
+
+import app.mealsmadeeasy.api.image.converter.ImageToViewConverter;
+import app.mealsmadeeasy.api.image.view.ImageView;
+import app.mealsmadeeasy.api.recipe.RecipeDraft;
+import app.mealsmadeeasy.api.recipe.view.RecipeDraftView;
+import app.mealsmadeeasy.api.user.User;
+import app.mealsmadeeasy.api.user.view.UserInfoView;
+import lombok.RequiredArgsConstructor;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class RecipeDraftToViewConverter {
+
+    private final ImageToViewConverter imageToViewConverter;
+
+    public RecipeDraftView convert(RecipeDraft recipeDraft, User viewer) {
+        final @Nullable ImageView mainImageView = recipeDraft.getMainImage() != null
+                ? this.imageToViewConverter.convert(recipeDraft.getMainImage(), viewer, false)
+                : null;
+        return RecipeDraftView.builder()
+                .id(recipeDraft.getId())
+                .created(recipeDraft.getCreated())
+                .modified(recipeDraft.getModified())
+                .state(recipeDraft.getState())
+                .slug(recipeDraft.getSlug())
+                .preparationTime(recipeDraft.getPreparationTime())
+                .cookingTime(recipeDraft.getCookingTime())
+                .totalTime(recipeDraft.getTotalTime())
+                .rawText(recipeDraft.getRawText())
+                .ingredients(recipeDraft.getIngredients())
+                .owner(UserInfoView.from(recipeDraft.getOwner()))
+                .mainImage(mainImageView)
+                .build();
+    }
+
+}

src/main/java/app/mealsmadeeasy/api/recipe/converter/RecipeDraftUpdateBodyToSpecConverter.java

@@ -1,7 +1,6 @@
 package app.mealsmadeeasy.api.recipe.converter;
 
 import app.mealsmadeeasy.api.image.Image;
-import app.mealsmadeeasy.api.image.ImageException;
 import app.mealsmadeeasy.api.image.ImageService;
 import app.mealsmadeeasy.api.recipe.body.RecipeDraftUpdateBody;
 import app.mealsmadeeasy.api.recipe.spec.RecipeDraftUpdateSpec;
@@ -15,7 +14,7 @@ public class RecipeDraftUpdateBodyToSpecConverter {
 
     private final ImageService imageService;
 
-    public RecipeDraftUpdateSpec convert(RecipeDraftUpdateBody body, User viewer) throws ImageException {
+    public RecipeDraftUpdateSpec convert(RecipeDraftUpdateBody body, User viewer) {
         final var b = RecipeDraftUpdateSpec.builder()
                 .slug(body.slug())
                 .title(body.title())

src/main/java/app/mealsmadeeasy/api/recipe/converter/RecipeToFullViewConverter.java

@@ -0,0 +1,44 @@
+package app.mealsmadeeasy.api.recipe.converter;
+
+import app.mealsmadeeasy.api.image.converter.ImageToViewConverter;
+import app.mealsmadeeasy.api.recipe.Recipe;
+import app.mealsmadeeasy.api.recipe.RecipeService;
+import app.mealsmadeeasy.api.recipe.view.FullRecipeView;
+import app.mealsmadeeasy.api.user.User;
+import app.mealsmadeeasy.api.user.view.UserInfoView;
+import lombok.RequiredArgsConstructor;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class RecipeToFullViewConverter {
+
+    private final RecipeService recipeService;
+    private final ImageToViewConverter imageToViewConverter;
+
+    public FullRecipeView convert(Recipe recipe, boolean includeRawText, @Nullable User viewer) {
+        final var b = FullRecipeView.builder()
+                .id(recipe.getId())
+                .created(recipe.getCreated())
+                .modified(recipe.getModified())
+                .slug(recipe.getSlug())
+                .title(recipe.getTitle())
+                .preparationTime(recipe.getPreparationTime())
+                .cookingTime(recipe.getCookingTime())
+                .totalTime(recipe.getTotalTime())
+                .text(this.recipeService.getRenderedMarkdown(recipe))
+                .owner(UserInfoView.from(recipe.getOwner()))
+                .starCount(this.recipeService.getStarCount(recipe))
+                .viewerCount(this.recipeService.getViewerCount(recipe))
+                .isPublic(recipe.getIsPublic());
+        if (recipe.getMainImage() != null) {
+            b.mainImage(this.imageToViewConverter.convert(recipe.getMainImage(), viewer, false));
+        }
+        if (includeRawText) {
+            b.rawText(recipe.getRawText());
+        }
+        return b.build();
+    }
+
+}

src/main/java/app/mealsmadeeasy/api/recipe/converter/RecipeToInfoViewConverter.java

@@ -0,0 +1,38 @@
+package app.mealsmadeeasy.api.recipe.converter;
+
+import app.mealsmadeeasy.api.image.converter.ImageToViewConverter;
+import app.mealsmadeeasy.api.recipe.Recipe;
+import app.mealsmadeeasy.api.recipe.RecipeService;
+import app.mealsmadeeasy.api.recipe.view.RecipeInfoView;
+import app.mealsmadeeasy.api.user.User;
+import app.mealsmadeeasy.api.user.view.UserInfoView;
+import lombok.RequiredArgsConstructor;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class RecipeToInfoViewConverter {
+
+    private final ImageToViewConverter imageToViewConverter;
+    private final RecipeService recipeService;
+
+    public RecipeInfoView convert(@NotNull Recipe recipe, @Nullable User viewer) {
+        return RecipeInfoView.builder()
+                .id(recipe.getId())
+                .created(recipe.getCreated())
+                .modified(recipe.getModified())
+                .slug(recipe.getSlug())
+                .title(recipe.getTitle())
+                .preparationTime(recipe.getPreparationTime())
+                .cookingTime(recipe.getCookingTime())
+                .totalTime(recipe.getTotalTime())
+                .owner(UserInfoView.from(recipe.getOwner()))
+                .isPublic(recipe.getIsPublic())
+                .starCount(this.recipeService.getStarCount(recipe))
+                .mainImage(this.imageToViewConverter.convert(recipe.getMainImage(), viewer, false))
+                .build();
+    }
+
+}

src/main/java/app/mealsmadeeasy/api/recipe/star/RecipeStarService.java

@@ -1,16 +1,15 @@
 package app.mealsmadeeasy.api.recipe.star;
 
-import app.mealsmadeeasy.api.recipe.RecipeException;
 import app.mealsmadeeasy.api.user.User;
 
 import java.util.Optional;
 
 public interface RecipeStarService {
     RecipeStar create(Integer recipeId, Integer ownerId);
-    RecipeStar create(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException;
+    RecipeStar create(String recipeOwnerUsername, String recipeSlug, User starer);
 
-    Optional<RecipeStar> find(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException;
+    Optional<RecipeStar> find(String recipeOwnerUsername, String recipeSlug, User starer);
 
     void delete(Integer recipeId, Integer ownerId);
-    void delete(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException;
+    void delete(String recipeOwnerUsername, String recipeSlug, User starer);
 }

src/main/java/app/mealsmadeeasy/api/recipe/star/RecipeStarServiceImpl.java

@@ -1,7 +1,6 @@
 package app.mealsmadeeasy.api.recipe.star;
 
 import app.mealsmadeeasy.api.recipe.Recipe;
-import app.mealsmadeeasy.api.recipe.RecipeException;
 import app.mealsmadeeasy.api.recipe.RecipeService;
 import app.mealsmadeeasy.api.user.User;
 import org.springframework.stereotype.Service;
@@ -32,7 +31,7 @@ public class RecipeStarServiceImpl implements RecipeStarService {
     }
 
     @Override
-    public RecipeStar create(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException {
+    public RecipeStar create(String recipeOwnerUsername, String recipeSlug, User starer) {
         final Recipe recipe = this.recipeService.getByUsernameAndSlug(recipeOwnerUsername, recipeSlug, starer);
         final Optional<RecipeStar> existing = this.recipeStarRepository.findByRecipeIdAndOwnerId(
                 recipe.getId(),
@@ -45,7 +44,7 @@ public class RecipeStarServiceImpl implements RecipeStarService {
     }
 
     @Override
-    public Optional<RecipeStar> find(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException {
+    public Optional<RecipeStar> find(String recipeOwnerUsername, String recipeSlug, User starer) {
         final Recipe recipe = this.recipeService.getByUsernameAndSlug(recipeOwnerUsername, recipeSlug, starer);
         return this.recipeStarRepository.findByRecipeIdAndOwnerId(recipe.getId(), starer.getId());
     }
@@ -56,7 +55,7 @@ public class RecipeStarServiceImpl implements RecipeStarService {
     }
 
     @Override
-    public void delete(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException {
+    public void delete(String recipeOwnerUsername, String recipeSlug, User starer) {
         final Recipe recipe = this.recipeService.getByUsernameAndSlug(recipeOwnerUsername, recipeSlug, starer);
         this.delete(recipe.getId(), starer.getId());
     }

src/main/java/app/mealsmadeeasy/api/recipe/view/RecipeDraftView.java

@@ -25,26 +25,4 @@ public record RecipeDraftView(
         @Nullable List<RecipeDraft.IngredientDraft> ingredients,
         UserInfoView owner,
         @Nullable ImageView mainImage
-) {
+) {}
-
-    public static RecipeDraftView from(
-            RecipeDraft recipeDraft,
-            @Nullable ImageView mainImageView
-    ) {
-        return RecipeDraftView.builder()
-                .id(recipeDraft.getId())
-                .created(recipeDraft.getCreated())
-                .modified(recipeDraft.getModified())
-                .state(recipeDraft.getState())
-                .slug(recipeDraft.getSlug())
-                .preparationTime(recipeDraft.getPreparationTime())
-                .cookingTime(recipeDraft.getCookingTime())
-                .totalTime(recipeDraft.getTotalTime())
-                .rawText(recipeDraft.getRawText())
-                .ingredients(recipeDraft.getIngredients())
-                .owner(UserInfoView.from(recipeDraft.getOwner()))
-                .mainImage(mainImageView)
-                .build();
-    }
-
-}

src/main/java/app/mealsmadeeasy/api/recipe/view/RecipeInfoView.java

@@ -1,7 +1,6 @@
 package app.mealsmadeeasy.api.recipe.view;
 
 import app.mealsmadeeasy.api.image.view.ImageView;
-import app.mealsmadeeasy.api.recipe.Recipe;
 import app.mealsmadeeasy.api.user.view.UserInfoView;
 import lombok.Builder;
 import lombok.Value;
@@ -12,24 +11,6 @@ import java.time.OffsetDateTime;
 @Value
 @Builder
 public class RecipeInfoView {
-
-    public static RecipeInfoView from(Recipe recipe, int starCount, @Nullable ImageView mainImage) {
-        return RecipeInfoView.builder()
-                .id(recipe.getId())
-                .created(recipe.getCreated())
-                .modified(recipe.getModified())
-                .slug(recipe.getSlug())
-                .title(recipe.getTitle())
-                .preparationTime(recipe.getPreparationTime())
-                .cookingTime(recipe.getCookingTime())
-                .totalTime(recipe.getTotalTime())
-                .owner(UserInfoView.from(recipe.getOwner()))
-                .isPublic(recipe.getIsPublic())
-                .starCount(starCount)
-                .mainImage(mainImage)
-                .build();
-    }
-
     Integer id;
     OffsetDateTime created;
     OffsetDateTime modified;
@@ -42,5 +23,4 @@ public class RecipeInfoView {
     boolean isPublic;
     int starCount;
     @Nullable ImageView mainImage;
-
 }

src/main/java/app/mealsmadeeasy/api/util/ExceptionHandlers.java

@@ -18,7 +18,7 @@ public class ExceptionHandlers {
                 .body(new NoSuchEntityWithIdExceptionView<>(
                         e.getEntityType().getSimpleName(),
                         e.getId(),
-                        "Could not find " + e.getEntityType().getSimpleName() + " with id " + e.getId()
+                        String.format("No such entity %s with id %s", e.getEntityType().getSimpleName(), e.getId())
                 ));
     }
 
@@ -32,4 +32,28 @@ public class ExceptionHandlers {
                 .body(new MustBeLoggedInExceptionView(e.getMessage()));
     }
 
+    public record NoSuchEntityWithUsernameAndSlugExceptionView(
+            String entityName,
+            String username,
+            String slug,
+            String message
+    ) {}
+
+    @ExceptionHandler(NoSuchEntityWithUsernameAndSlugException.class)
+    public ResponseEntity<NoSuchEntityWithUsernameAndSlugExceptionView> handleNoSuchEntityWithUsernameAndSlugException(
+            NoSuchEntityWithUsernameAndSlugException e
+    ) {
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(new NoSuchEntityWithUsernameAndSlugExceptionView(
+                e.getEntityType().getSimpleName(),
+                e.getUsername(),
+                e.getSlug(),
+                String.format(
+                        "No such entity %s for username %s and slug %s",
+                        e.getEntityType().getSimpleName(),
+                        e.getUsername(),
+                        e.getSlug()
+                )
+        ));
+    }
+
 }

src/main/java/app/mealsmadeeasy/api/util/NoSuchEntityWithUsernameAndFilenameException.java

@@ -0,0 +1,12 @@
+package app.mealsmadeeasy.api.util;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public class NoSuchEntityWithUsernameAndFilenameException extends RuntimeException {
+    private final Class<?> entityType;
+    private final String username;
+    private final String filename;
+}

src/main/java/app/mealsmadeeasy/api/util/NoSuchEntityWithUsernameAndSlugException.java

@@ -0,0 +1,12 @@
+package app.mealsmadeeasy.api.util;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public class NoSuchEntityWithUsernameAndSlugException extends RuntimeException {
+    private final Class<?> entityType;
+    private final String username;
+    private final String slug;
+}