filter

src/main/java/com/example/hangry/RecipeController.java

@@ -1,11 +1,15 @@
 package com.example.hangry;
 
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
-
-import java.util.List;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import java.util.Optional;
 
 @RestController
 @RequestMapping("/api/recipes")
+@CrossOrigin(origins = "*") // Erlaubt CORS für alle Domains, kann angepasst werden
 public class RecipeController {
 
     private final RecipeService recipeService;
@@ -14,13 +18,51 @@ public class RecipeController {
         this.recipeService = recipeService;
     }
 
+    // Alle Rezepte mit Pagination abrufen
     @GetMapping
-    public List<Recipe> getAllRecipes() {
-        return recipeService.getAllRecipes();
+    public Page<Recipe> getAllRecipes(Pageable pageable) {
+        return recipeService.getAllRecipes(pageable);
     }
 
+    // Einzelnes Rezept nach ID abrufen
+    @GetMapping("/{id}")
+    public ResponseEntity<Recipe> getRecipeById(@PathVariable Long id) {
+        Optional<Recipe> recipe = recipeService.getRecipeById(id);
+        return recipe.map(ResponseEntity::ok).orElseGet(() -> ResponseEntity.notFound().build());
+    }
+
+    // Neues Rezept erstellen
     @PostMapping
-    public Recipe createRecipe(@RequestBody Recipe recipe) {
-        return recipeService.createRecipe(recipe);
+    public ResponseEntity<Recipe> createRecipe(@RequestBody Recipe recipe) {
+        Recipe savedRecipe = recipeService.createRecipe(recipe);
+        return ResponseEntity.status(HttpStatus.CREATED).body(savedRecipe);
+    }
+
+    // Rezept aktualisieren
+    @PutMapping("/{id}")
+    public ResponseEntity<Recipe> updateRecipe(@PathVariable Long id, @RequestBody Recipe recipe) {
+        Optional<Recipe> updatedRecipe = recipeService.updateRecipe(id, recipe);
+        return updatedRecipe.map(ResponseEntity::ok).orElseGet(() -> ResponseEntity.notFound().build());
+    }
+
+    // Rezept löschen
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> deleteRecipe(@PathVariable Long id) {
+        if (recipeService.deleteRecipe(id)) {
+            return ResponseEntity.noContent().build();
+        } else {
+            return ResponseEntity.notFound().build();
+        }
+    }
+    //Endpunkt: Filter nach Kategorie (z. B. "/api/recipes/filter/category?category=vegan")
+    @GetMapping("/filter/category")
+    public Page<Recipe> getRecipesByCategory(@RequestParam String category, Pageable pageable) {
+        return recipeService.getRecipesByCategory(category, pageable);
+    }
+
+    // Endpunkt: Filter nach Zutat (z. B. "/api/recipes/filter/ingredient?ingredient=tomate")
+    @GetMapping("/filter/ingredient")
+    public Page<Recipe> getRecipesByIngredient(@RequestParam String ingredient, Pageable pageable) {
+        return recipeService.getRecipesByIngredient(ingredient, pageable);
     }
 }

src/main/java/com/example/hangry/RecipeRepository.java

@@ -1,6 +1,16 @@
 package com.example.hangry;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 public interface RecipeRepository extends JpaRepository<Recipe, Long> {
+    // Filtert Rezepte nach Kategorie (z. B. vegan, vegetarisch, einfach)
+    Page<Recipe> findByCategoryIgnoreCase(String category, Pageable pageable);
+
+    // Sucht nach Rezepten, die eine bestimmte Zutat enthalten
+    @Query("SELECT r FROM Recipe r JOIN r.recipeIngredients i WHERE LOWER(i.name) LIKE LOWER(CONCAT('%', :ingredient, '%'))")
+    Page<Recipe> findByIngredient(@Param("ingredient") String ingredient, Pageable pageable);
 }

src/main/java/com/example/hangry/RecipeService.java

@@ -1,8 +1,10 @@
 package com.example.hangry;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
-import java.util.List;
+import java.util.Optional;
 
 @Service
 public class RecipeService {
@@ -13,11 +15,50 @@ public class RecipeService {
         this.recipeRepository = recipeRepository;
     }
 
-    public List<Recipe> getAllRecipes() {
-        return recipeRepository.findAll();
+    // Alle Rezepte mit Pagination abrufen
+    public Page<Recipe> getAllRecipes(Pageable pageable) {
+        return recipeRepository.findAll(pageable);
     }
 
+    // Einzelnes Rezept nach ID abrufen
+    public Optional<Recipe> getRecipeById(Long id) {
+        return recipeRepository.findById(id);
+    }
+
+    // Neues Rezept erstellen
     public Recipe createRecipe(Recipe recipe) {
         return recipeRepository.save(recipe);
     }
+
+    // Rezept aktualisieren
+    public Optional<Recipe> updateRecipe(Long id, Recipe recipeDetails) {
+        return recipeRepository.findById(id).map(recipe -> {
+            if (recipeDetails.getName() != null) recipe.setName(recipeDetails.getName());
+            if (recipeDetails.getDescription() != null) recipe.setDescription(recipeDetails.getDescription());
+            if (recipeDetails.getCategory() != null) recipe.setCategory(recipeDetails.getCategory());
+            if (recipeDetails.getImageUrl() != null) recipe.setImageUrl(recipeDetails.getImageUrl());
+            return recipeRepository.save(recipe);
+        });
+    }
+
+
+    // Rezept löschen
+    public boolean deleteRecipe(Long id) {
+        if (recipeRepository.existsById(id)) {
+            recipeRepository.deleteById(id);
+            return true;
+        }
+        return false;
+    }
+
+    //Filter nach Kategorie
+    public Page<Recipe> getRecipesByCategory(String category, Pageable pageable) {
+        return recipeRepository.findByCategoryIgnoreCase(category, pageable);
+    }
+
+    //Filter nach Zutat
+    public Page<Recipe> getRecipesByIngredient(String ingredient, Pageable pageable) {
+        return recipeRepository.findByIngredient(ingredient, pageable);
+    }
+
 }