Added getStar to RecipeController and related.

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

@@ -150,6 +150,23 @@ public class RecipeControllerTests {
                 .andExpect(jsonPath("$.date").exists());
     }
 
+    @Test
+    @DirtiesContext
+    public void getStarForRecipe() throws Exception {
+        final User owner = this.createTestUser("recipe-owner");
+        final User starer = this.createTestUser("recipe-starer");
+        final Recipe recipe = this.createTestRecipe(owner, true);
+        this.recipeStarService.create(recipe.getId(), starer.getUsername());
+        this.mockMvc.perform(
+                get("/recipes/{username}/{slug}/stars", recipe.getOwner().getUsername(), recipe.getSlug())
+                        .header("Authorization", "Bearer " + this.getAccessToken(starer))
+        )
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.isStarred").value(true))
+                .andExpect(jsonPath("$.star").isMap())
+                .andExpect(jsonPath("$.star.date").exists());
+    }
+
     @Test
     @DirtiesContext
     public void deleteStarFromRecipe() throws Exception {

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

@@ -1,11 +1,13 @@
 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.recipe.spec.RecipeCreateSpec;
 import app.mealsmadeeasy.api.user.User;
 import app.mealsmadeeasy.api.user.UserCreateException;
 import app.mealsmadeeasy.api.user.UserService;
+import org.jetbrains.annotations.Nullable;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
@@ -72,6 +74,21 @@ public class RecipeStarServiceTests {
         assertThat(star.getDate(), is(notNullValue()));
     }
 
+    @Test
+    @DirtiesContext
+    public void find() throws RecipeException {
+        final User owner = this.getTestUser("recipe-owner");
+        final User starer = this.getTestUser("recipe-starer");
+        final Recipe recipe = this.getTestRecipe(owner, "test-recipe", true);
+        this.recipeStarService.create(recipe.getId(), starer.getUsername());
+        final @Nullable RecipeStar star = this.recipeStarService.find(
+                recipe.getOwner().getUsername(),
+                recipe.getSlug(),
+                starer
+        ).orElse(null);
+        assertThat(star, is(notNullValue()));
+    }
+
     @Test
     @DirtiesContext
     public void deleteViaUsernameAndSlug() {

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

@@ -6,6 +6,7 @@ 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.user.User;
+import org.jetbrains.annotations.Nullable;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
 import org.springframework.http.HttpStatus;
@@ -74,6 +75,20 @@ public class RecipeController {
         return ResponseEntity.status(HttpStatus.CREATED).body(this.recipeStarService.create(username, slug, principal));
     }
 
+    @GetMapping("/{username}/{slug}/stars")
+    public ResponseEntity<Map<String, Object>> getStar(
+            @PathVariable String username,
+            @PathVariable String slug,
+            @AuthenticationPrincipal User principal
+    ) throws RecipeException {
+        final @Nullable RecipeStar star = this.recipeStarService.find(username, slug, principal).orElse(null);
+        if (star != null) {
+            return ResponseEntity.ok(Map.of("isStarred", true, "star", star));
+        } else {
+            return ResponseEntity.ok(Map.of("isStarred", false));
+        }
+    }
+
     @DeleteMapping("/{username}/{slug}/stars")
     public ResponseEntity<Object> removeStar(
             @PathVariable String username,

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

@@ -3,10 +3,14 @@ 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(long recipeId, String ownerUsername);
     RecipeStar create(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException;
-    RecipeStar get(long recipeId, String ownerUsername) throws RecipeException;
+
+    Optional<RecipeStar> find(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException;
+
     void delete(long recipeId, String ownerUsername);
     void delete(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException;
 }

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

@@ -45,13 +45,10 @@ public class RecipeStarServiceImpl implements RecipeStarService {
     }
 
     @Override
-    public RecipeStar get(long recipeId, String ownerUsername) throws RecipeException {
-        return this.recipeStarRepository.findByRecipeIdAndOwnerUsername(recipeId, ownerUsername).orElseThrow(
-                () -> new RecipeException(
-                        RecipeException.Type.INVALID_ID,
-                        "No such RecipeStar for recipeId: " + recipeId + " and ownerUsername: " + ownerUsername
-                )
-        );
+    public Optional<RecipeStar> find(String recipeOwnerUsername, String recipeSlug, User starer) throws RecipeException {
+        final Recipe recipe = this.recipeService.getByUsernameAndSlug(recipeOwnerUsername, recipeSlug, starer);
+        return this.recipeStarRepository.findByRecipeIdAndOwnerUsername(recipe.getId(), starer.getUsername())
+                .map(RecipeStar.class::cast);
     }
 
     @Override