.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_23" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/Hangry_Fullstack.iml" filepath="$PROJECT_DIR$/Hangry_Fullstack.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings" defaultProject="true" />
+</project>

Hangry_Fullstack.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="GENERAL_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/backend/src/main/java" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="17" jdkType="JavaSDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

backend/pom.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>org.springframework.boot</groupId>

backend/src/main/java/com/example/backend/BackendApplication.java

@@ -0,0 +1,13 @@
+package com.example.backend;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BackendApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(BackendApplication.class, args);
+    }
+
+}

backend/src/main/java/com/example/backend/Group.java

@@ -1,6 +1,7 @@
-package com.example.hangry;
+package com.example.backend;
 
 import jakarta.persistence.*;
+
 import java.util.HashSet;
 import java.util.Set;
 

backend/src/main/java/com/example/backend/GroupRecipe.java

@@ -1,5 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
-
 import jakarta.persistence.*;
 
 @Entity

backend/src/main/java/com/example/backend/GroupRecipeRepository.java

@@ -1,4 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 

backend/src/main/java/com/example/backend/GroupRepository.java

@@ -1,4 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 

backend/src/main/java/com/example/backend/Ingredient.java

@@ -1,4 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
 
 import jakarta.persistence.*;
 

backend/src/main/java/com/example/backend/IngredientRepository.java

@@ -1,4 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;

backend/src/main/java/com/example/backend/Like.java

@@ -1,5 +1,7 @@
-package com.example.hangry;
+package com.example.backend;
+
 import jakarta.persistence.*;
+
 import java.time.LocalDateTime;
 
 

backend/src/main/java/com/example/backend/LikeRepository.java

@@ -1,8 +1,8 @@
-package com.example.hangry;
+package com.example.backend;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+
 import java.util.List;
-import java.util.Optional;
 
 public interface LikeRepository extends JpaRepository<Like, Long> {
     boolean existsByUserAndRecipe(User user, Recipe recipe);

backend/src/main/java/com/example/backend/Recipe.java

@@ -0,0 +1,57 @@
+package com.example.backend;
+
+import jakarta.persistence.*;
+
+import java.util.List;
+
+@Entity
+public class Recipe {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String name;
+    private String description;
+    private String category;
+    private String imageUrl;
+
+    @OneToMany(mappedBy = "recipe", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<RecipeIngredient> recipeIngredients;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id", nullable = false) // Hier verbinden wir Recipe mit User
+    private User user;
+
+    public Recipe() {}
+
+    public Recipe(String name, String description, String category, String imageUrl, User user) {
+        this.name = name;
+        this.description = description;
+        this.category = category;
+        this.imageUrl = imageUrl;
+        this.user = user;
+    }
+
+    // Getter und Setter
+    public Long getId() { return id; }
+    public void setId(Long id) { this.id = id; }
+
+    public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
+
+    public String getDescription() { return description; }
+    public void setDescription(String description) { this.description = description; }
+
+    public String getCategory() { return category; }
+    public void setCategory(String category) { this.category = category; }
+
+    public String getImageUrl() { return imageUrl; }
+    public void setImageUrl(String imageUrl) { this.imageUrl = imageUrl; }
+
+    public List<RecipeIngredient> getRecipeIngredients() { return recipeIngredients; }
+    public void setRecipeIngredients(List<RecipeIngredient> recipeIngredients) { this.recipeIngredients = recipeIngredients; }
+
+    public User getUser() { return user; }
+    public void setUser(User user) { this.user = user; }
+}

backend/src/main/java/com/example/backend/RecipeIngredient.java

@@ -1,4 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
 
 import jakarta.persistence.*;
 

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

@@ -1,4 +1,4 @@
-package com.example.hangry;
+package com.example.backend;
 
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -6,10 +6,15 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 
+import java.util.List;
+
 public interface RecipeRepository extends JpaRepository<Recipe, Long> {
     // Filtert Rezepte nach Kategorie (z. B. vegan, vegetarisch, einfach)
     Page<Recipe> findByCategoryIgnoreCase(String category, Pageable pageable);
 
+    Page<Recipe> findByUser_Id(long userID, Pageable pageable);
+    List<Recipe> findByUser_Id(long userID);
+
     // Sucht nach Rezepten, die eine bestimmte Zutat enthalten
     @Query("SELECT r FROM Recipe r JOIN r.recipeIngredients i WHERE LOWER(i.ingredient.name) LIKE LOWER(CONCAT('%', :ingredient, '%'))")
     Page<Recipe> findByIngredient(@Param("ingredient") String ingredient, Pageable pageable);

backend/src/main/java/com/example/backend/User.java

@@ -1,6 +1,7 @@
-package com.example.hangry;
+package com.example.backend;
 
 import jakarta.persistence.*;
+
 import java.util.ArrayList;
 import java.util.List;
 

backend/src/main/java/com/example/backend/UserRepository.java

@@ -1,15 +1,17 @@
-    package com.example.hangry;
+    package com.example.backend;
 
     import org.springframework.data.jpa.repository.JpaRepository;
     import org.springframework.stereotype.Repository;
 
+    import java.util.Optional;
+
     @Repository
     public interface UserRepository extends JpaRepository<User, Long> {
 
         // Benutzerdefinierte Abfrage: Benutzer nach Benutzernamen finden
-        User findByUsername(String username);
+        Optional<User> findByUsername(String username);
 
         // Benutzerdefinierte Abfrage: Benutzer nach E-Mail finden
-        User findByEmail(String email);
+        Optional<User> findByEmail(String email);
     }
 

backend/src/main/java/com/example/backend/controller/AuthController.java

@@ -1,10 +1,11 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
 
-import com.example.hangry.User;
+import com.example.backend.User;
-import com.example.hangry.services.UserService;
+import com.example.backend.services.JwtService;
-import com.example.hangry.services.JwtService;
+import com.example.backend.services.UserService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
+
 import java.util.Collections;
 
 

backend/src/main/java/com/example/backend/controller/GroupController.java

@@ -1,10 +1,12 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
 
+import com.example.backend.Group;
+import com.example.backend.User;
+import com.example.backend.services.GroupService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
+
 import java.util.Set;
-import com.example.hangry.*;
-import com.example.hangry.services.GroupService;
 @RestController
 @RequestMapping("/api/groups")
 @CrossOrigin(origins = "*")

backend/src/main/java/com/example/backend/controller/GroupRecipeController.java

@@ -1,15 +1,13 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
-
 
 
+import com.example.backend.Recipe;
+import com.example.backend.services.GroupRecipeService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.Set;
 
-import com.example.hangry.services.GroupRecipeService;
-import com.example.hangry.*;
-
 @RestController
 @RequestMapping("/api/group-recipes")
 @CrossOrigin(origins = "*")

backend/src/main/java/com/example/backend/controller/IngredientController.java

@@ -1,12 +1,13 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
 
+import com.example.backend.Ingredient;
+import com.example.backend.services.IngredientService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
-import java.util.*;
+
-import com.example.hangry.*;
+import java.util.List;
-import com.example.hangry.services.IngredientService;
 
 @RestController
 @RequestMapping("/api/ingredients")

backend/src/main/java/com/example/backend/controller/LikeController.java

@@ -1,10 +1,11 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
 
+import com.example.backend.Recipe;
+import com.example.backend.services.LikeService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
+
 import java.util.List;
-import com.example.hangry.*;
-import com.example.hangry.services.LikeService;
 @RestController
 @RequestMapping("/api/likes")
 @CrossOrigin(origins = "*")

backend/src/main/java/com/example/backend/controller/RecipeController.java

@@ -1,14 +1,14 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
 
+import com.example.backend.Recipe;
+import com.example.backend.services.RecipeService;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import java.util.Optional;
 
-import com.example.hangry.*;
+import java.util.Optional;
-import com.example.hangry.services.RecipeService;
 @RestController
 @RequestMapping("/api/recipes")
 @CrossOrigin(origins = "*") // Erlaubt CORS für alle Domains, kann angepasst werden
@@ -32,6 +32,12 @@ public class RecipeController {
         Optional<Recipe> recipe = recipeService.getRecipeById(id);
         return recipe.map(ResponseEntity::ok).orElseGet(() -> ResponseEntity.notFound().build());
     }
+    // Endpunkt: Eigene Rezepte abrufen
+    @GetMapping("/user/{userId}")
+    public Page<Recipe> getRecipesByUser(@PathVariable Long userId, Pageable pageable) {
+        return recipeService.getRecipesByUser(userId, pageable);
+    }
+
 
     // Neues Rezept erstellen
     @PostMapping

backend/src/main/java/com/example/backend/controller/UserController.java

@@ -1,9 +1,9 @@
-package com.example.hangry.controller;
+package com.example.backend.controller;
 
+import com.example.backend.User;
+import com.example.backend.services.UserService;
 import org.springframework.web.bind.annotation.*;
 
-import com.example.hangry.*;
-import com.example.hangry.services.UserService;
 @RestController
 @RequestMapping("/users")
 public class UserController {
@@ -31,4 +31,12 @@ public class UserController {
     public User getUserByEmail(@PathVariable String email) {
         return userService.getUserByEmail(email);
     }
+
+    //Endpunkt: Benutzer aktualisieren
+    @PutMapping("/update/email/{email}")
+    public User updateUser(@PathVariable String email, @RequestBody User updatedUser) {
+        return userService.updateUser(email, updatedUser);
+    }
 }
+
+

backend/src/main/java/com/example/backend/exceptions/GlobalExceptionHandler.java

@@ -0,0 +1,27 @@
+package com.example.backend.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(UserNotFoundException.class)
+    public ResponseEntity<Map<String, String>> handleUserNotFoundException(UserNotFoundException ex) {
+        Map<String, String> response = new HashMap<>();
+        response.put("error", ex.getMessage());
+        return new ResponseEntity<>(response, HttpStatus.NOT_FOUND);
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<Map<String, String>> handleGeneralException(Exception ex) {
+        Map<String, String> response = new HashMap<>();
+        response.put("error", "Ein unerwarteter Fehler ist aufgetreten.");
+        return new ResponseEntity<>(response, HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+}

backend/src/main/java/com/example/backend/exceptions/UserNotFoundException.java

@@ -0,0 +1,7 @@
+package com.example.backend.exceptions;
+
+public class UserNotFoundException extends RuntimeException {
+    public UserNotFoundException(String message) {
+        super(message);
+    }
+}

backend/src/main/java/com/example/backend/security/JwtAuthenticationFilter.java

@@ -1,17 +1,15 @@
-package com.example.hangry.security;
+package com.example.backend.security;
 
-import com.example.hangry.User;
+import com.example.backend.User;
-import com.example.hangry.UserRepository;
+import com.example.backend.UserRepository;
-import com.example.hangry.services.JwtService;
+import com.example.backend.exceptions.UserNotFoundException;
+import com.example.backend.services.JwtService;
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.context.SecurityContextHolder;
-import org.springframework.security.core.userdetails.UserDetails;
-import org.springframework.security.core.userdetails.UserDetailsService;
-import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
 import org.springframework.stereotype.Component;
 import org.springframework.web.filter.OncePerRequestFilter;
 
@@ -39,7 +37,7 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
             String token = authHeader.substring(7);
             String email = jwtService.extractEmail(token);
             if (email != null && SecurityContextHolder.getContext().getAuthentication() == null) {
-                User user = userRepository.findByEmail(email);
+                User user = userRepository.findByEmail(email).orElseThrow(() -> new UserNotFoundException("User not found"));
                 if (user != null && jwtService.validateToken(token, user)) {
                     UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(user, null, new ArrayList<>());
                     SecurityContextHolder.getContext().setAuthentication(authentication);

backend/src/main/java/com/example/backend/security/SecurityConfig.java

@@ -1,12 +1,12 @@
-package com.example.hangry.security;
+package com.example.backend.security;
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
-import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 
 @Configuration

backend/src/main/java/com/example/backend/services/GroupRecipeService.java

@@ -1,9 +1,10 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
+import com.example.backend.*;
 import org.springframework.stereotype.Service;
+
 import java.util.Set;
 import java.util.stream.Collectors;
-import com.example.hangry.*;
 @Service
 public class GroupRecipeService {
 

backend/src/main/java/com/example/backend/services/GroupService.java

@@ -1,8 +1,12 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
+import com.example.backend.Group;
+import com.example.backend.GroupRepository;
+import com.example.backend.User;
+import com.example.backend.UserRepository;
 import org.springframework.stereotype.Service;
+
 import java.util.Set;
-import com.example.hangry.*;
 @Service
 public class GroupService {
 

backend/src/main/java/com/example/backend/services/IngredientService.java

@@ -1,9 +1,14 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
+import com.example.backend.Ingredient;
+import com.example.backend.IngredientRepository;
+import com.example.backend.User;
+import com.example.backend.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
-import java.util.*;
+
-import com.example.hangry.*;
+import java.util.List;
+import java.util.Optional;
 @Service
 public class IngredientService {
 

backend/src/main/java/com/example/backend/services/JwtService.java

@@ -1,6 +1,6 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
-import com.example.hangry.User;
+import com.example.backend.User;
 import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.Jwts;
 import io.jsonwebtoken.SignatureAlgorithm;

backend/src/main/java/com/example/backend/services/LikeService.java

@@ -1,9 +1,10 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
+import com.example.backend.*;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+
 import java.util.List;
-import com.example.hangry.*;
 
 @Service
 public class LikeService {

backend/src/main/java/com/example/backend/services/RecipeService.java

@@ -1,11 +1,13 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
+import com.example.backend.Recipe;
+import com.example.backend.RecipeRepository;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
 import java.util.Optional;
-import com.example.hangry.*;
+
 @Service
 public class RecipeService {
 
@@ -61,4 +63,9 @@ public class RecipeService {
         return recipeRepository.findByIngredient(ingredient, pageable);
     }
 
+    // Eigene Rezepte abrufen
+    public Page<Recipe> getRecipesByUser(Long userId, Pageable pageable) {
+        return recipeRepository.findByUser_Id(userId, pageable);
+    }
+
 }

backend/src/main/java/com/example/backend/services/UserService.java

@@ -1,9 +1,11 @@
-package com.example.hangry.services;
+package com.example.backend.services;
 
+import com.example.backend.User;
+import com.example.backend.UserRepository;
+import com.example.backend.exceptions.UserNotFoundException;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
-import com.example.hangry.*;
 
 @Service
 public class UserService {
@@ -25,16 +27,26 @@ public class UserService {
 
     // Benutzer anhand des Benutzernamens suchen
     public User getUserByUsername(String username) {
-        return userRepository.findByUsername(username);
+        return userRepository.findByUsername(username).orElse(null);
     }
 
     // Benutzer anhand der E-Mail suchen
     public User getUserByEmail(String email) {
-        return userRepository.findByEmail(email);
+        return userRepository.findByEmail(email).orElseThrow(()->new UserNotFoundException("User not found: "+email));
     }
 
     // Passwort überprüfen
     public boolean checkPassword(String rawPassword, String hashedPassword) {
         return passwordEncoder.matches(rawPassword, hashedPassword);
     }
+    public User updateUser(String email, User updatedUser) {
+        User existingUser = userRepository.findByEmail(email)
+                .orElseThrow(() -> new UserNotFoundException("User not found: "+email));
+
+        existingUser.setUsername(updatedUser.getUsername());
+        // Weitere Felder falls nötig
+
+        return userRepository.save(existingUser);
+    }
+
 }

backend/src/test/java/com/example/backend/BackendApplicationTests.java

@@ -1,10 +1,10 @@
-package com.example.hangry;
+package com.example.backend;
 
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 
 @SpringBootTest
-class HangryApplicationTests {
+class BackendApplicationTests {
 
 	@Test
 	void contextLoads() {

frontend/.gitignore

@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

frontend/README.md

@@ -0,0 +1,54 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
+
+```js
+export default tseslint.config({
+  extends: [
+    // Remove ...tseslint.configs.recommended and replace with this
+    ...tseslint.configs.recommendedTypeChecked,
+    // Alternatively, use this for stricter rules
+    ...tseslint.configs.strictTypeChecked,
+    // Optionally, add this for stylistic rules
+    ...tseslint.configs.stylisticTypeChecked,
+  ],
+  languageOptions: {
+    // other options...
+    parserOptions: {
+      project: ['./tsconfig.node.json', './tsconfig.app.json'],
+      tsconfigRootDir: import.meta.dirname,
+    },
+  },
+})
+```
+
+You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+
+```js
+// eslint.config.js
+import reactX from 'eslint-plugin-react-x'
+import reactDom from 'eslint-plugin-react-dom'
+
+export default tseslint.config({
+  plugins: {
+    // Add the react-x and react-dom plugins
+    'react-x': reactX,
+    'react-dom': reactDom,
+  },
+  rules: {
+    // other rules...
+    // Enable its recommended typescript rules
+    ...reactX.configs['recommended-typescript'].rules,
+    ...reactDom.configs.recommended.rules,
+  },
+})
+```

frontend/eslint.config.js

@@ -0,0 +1,28 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+
+export default tseslint.config(
+  { ignores: ['dist'] },
+  {
+    extends: [js.configs.recommended, ...tseslint.configs.recommended],
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+    },
+  },
+)

frontend/index.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite + React + TS</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

frontend/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "axios": "^1.9.0",
+    "jwt-decode": "^4.0.0",
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0",
+    "react-icons": "^5.5.0",
+    "react-router-dom": "^7.6.0"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.25.0",
+    "@types/react": "^19.1.2",
+    "@types/react-dom": "^19.1.2",
+    "@vitejs/plugin-react": "^4.4.1",
+    "eslint": "^9.25.0",
+    "eslint-plugin-react-hooks": "^5.2.0",
+    "eslint-plugin-react-refresh": "^0.4.19",
+    "globals": "^16.0.0",
+    "typescript": "~5.8.3",
+    "typescript-eslint": "^8.30.1",
+    "vite": "^6.3.5"
+  }
+}

frontend/public/vite.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

frontend/src/App.css

@@ -0,0 +1,42 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}

frontend/src/App.tsx

@@ -0,0 +1,70 @@
+import {BrowserRouter as Router, Routes, Route, Navigate} from "react-router-dom";
+
+// Screens (du musst diese entsprechend importieren)
+import ProfileScreen from "./screens/Profile";
+import EditProfileScreen from "./screens/EditProfileScreen";
+import LibraryScreen from "./screens/LibraryScreen";
+import RegistrationScreen from "./screens/RegisterScreen";
+import LoginScreen from "./screens/LoginScreen";
+import HomeScreen from "./screens/Home.tsx";
+import type {JSX} from "react";
+
+// Optional: Auth-Gateway (z. B. ProtectedRoute)
+const isAuthenticated = () => {
+    return localStorage.getItem("authToken") !== null;
+};
+
+const ProtectedRoute = ({children}: { children: JSX.Element }) => {
+    return isAuthenticated() ? children : <Navigate to="/login"/>;
+};
+
+const App = () => {
+    return (
+        <Router>
+            <Routes>
+                {/* Öffentliche Seiten */}
+                <Route path="/login" element={<LoginScreen/>}/>
+                <Route path="/register" element={<RegistrationScreen/>}/>
+
+                {/* Geschützte Seiten */}
+                <Route
+                    path="/profile"
+                    element={
+                        <ProtectedRoute>
+                            <ProfileScreen/>
+                        </ProtectedRoute>
+                    }
+                />
+                <Route
+                    path="/edit-profile"
+                    element={
+                        <ProtectedRoute>
+                            <EditProfileScreen/>
+                        </ProtectedRoute>
+                    }
+                />
+                <Route
+                    path="/library/:userId"
+                    element={
+                        <ProtectedRoute>
+                            <LibraryScreen/>
+                        </ProtectedRoute>
+                    }
+                />
+                <Route
+                    path="/recipes/:id"
+                    element={
+                        <ProtectedRoute>
+                            <HomeScreen/>
+                        </ProtectedRoute>
+                    }
+                />
+
+                {/* Fallback/Redirect */}
+                <Route path="*" element={<Navigate to="/profile"/>}/>
+            </Routes>
+        </Router>
+    );
+};
+
+export default App;

frontend/src/assets/react.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>

frontend/src/index.css

@@ -0,0 +1,68 @@
+:root {
+  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+h1 {
+  font-size: 3.2em;
+  line-height: 1.1;
+}
+
+button {
+  border-radius: 8px;
+  border: 1px solid transparent;
+  padding: 0.6em 1.2em;
+  font-size: 1em;
+  font-weight: 500;
+  font-family: inherit;
+  background-color: #1a1a1a;
+  cursor: pointer;
+  transition: border-color 0.25s;
+}
+button:hover {
+  border-color: #646cff;
+}
+button:focus,
+button:focus-visible {
+  outline: 4px auto -webkit-focus-ring-color;
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button {
+    background-color: #f9f9f9;
+  }
+}

frontend/src/main.tsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)

frontend/src/screens/EditProfileScreen.tsx

@@ -0,0 +1,132 @@
+import React, { useState, useEffect } from "react";
+import { jwtDecode } from "jwt-decode";
+import { useNavigate } from "react-router-dom";
+
+const API_URL = "http://localhost:8080/users"; // localhost für Web (kein 10.0.2.2)
+
+const EditProfileScreen = () => {
+    const [username, setUsername] = useState("");
+    const [email, setEmail] = useState("");
+    const [loading, setLoading] = useState(true);
+    const navigate = useNavigate();
+
+    useEffect(() => {
+        const fetchUserProfile = async () => {
+            try {
+                const token = localStorage.getItem("authToken");
+                if (!token) return;
+
+                const decoded: any = jwtDecode(token);
+                const userEmail = decoded.sub;
+
+                const response = await fetch(`${API_URL}/email/${userEmail}`, {
+                    headers: {
+                        Authorization: `Bearer ${token}`,
+                        "Content-Type": "application/json",
+                    },
+                });
+
+                if (!response.ok) throw new Error("Fehler beim Laden");
+
+                const data = await response.json();
+                setUsername(data.username);
+                setEmail(data.email);
+            } catch (error) {
+                console.error("Fehler beim Laden:", error);
+                alert("Profil konnte nicht geladen werden.");
+            } finally {
+                setLoading(false);
+            }
+        };
+
+        fetchUserProfile();
+    }, []);
+
+    const handleSave = async () => {
+        if (!email) return;
+
+        try {
+            const token = localStorage.getItem("authToken");
+
+            const response = await fetch(`${API_URL}/update/email/${email}`, {
+                method: "PUT",
+                headers: {
+                    Authorization: `Bearer ${token}`,
+                    "Content-Type": "application/json",
+                },
+                body: JSON.stringify({ username, email }),
+            });
+
+            if (!response.ok) throw new Error("Fehler beim Speichern");
+
+            alert("Änderungen gespeichert.");
+            navigate(-1); // Zurück
+        } catch (error) {
+            console.error("Fehler beim Speichern:", error);
+            alert("Profil konnte nicht gespeichert werden.");
+        }
+    };
+
+    if (loading) return <p>Lade Profil...</p>;
+
+    return (
+        <div style={styles.container}>
+            <label style={styles.label}>Benutzername</label>
+            <input
+                type="text"
+                value={username}
+                onChange={(e) => setUsername(e.target.value)}
+                style={styles.input}
+                placeholder="Benutzername"
+            />
+
+            <label style={styles.label}>E-Mail</label>
+            <input
+                type="email"
+                value={email}
+                readOnly
+                style={{ ...styles.input, backgroundColor: "#f0f0f0" }}
+            />
+
+            <button onClick={handleSave} style={styles.button}>
+                Speichern
+            </button>
+        </div>
+    );
+};
+
+const styles: { [key: string]: React.CSSProperties } = {
+    container: {
+        maxWidth: "400px",
+        margin: "50px auto",
+        padding: "20px",
+        border: "1px solid #ccc",
+        borderRadius: "8px",
+        backgroundColor: "#fff",
+        boxShadow: "0 0 10px rgba(0,0,0,0.1)",
+    },
+    label: {
+        display: "block",
+        fontSize: "16px",
+        marginBottom: "5px",
+    },
+    input: {
+        width: "100%",
+        padding: "10px",
+        marginBottom: "15px",
+        border: "1px solid #ccc",
+        borderRadius: "5px",
+    },
+    button: {
+        width: "100%",
+        padding: "12px",
+        backgroundColor: "#007bff",
+        color: "#fff",
+        border: "none",
+        borderRadius: "5px",
+        fontSize: "16px",
+        cursor: "pointer",
+    },
+};
+
+export default EditProfileScreen;

frontend/src/screens/Home.tsx

@@ -0,0 +1,11 @@
+
+// Dummy HomeScreen – Beispielkomponente
+const HomeScreen = () => {
+    return (
+        <div style={{ display: "flex", justifyContent: "center", alignItems: "center", height: "100vh" }}>
+            <p>Home Screen</p>
+        </div>
+    );
+};
+
+export default HomeScreen;

frontend/src/screens/LibraryScreen.tsx

@@ -0,0 +1,103 @@
+import React, { useEffect, useState } from "react";
+import { useNavigate, useParams } from "react-router-dom";
+import axios from "axios";
+
+interface Recipe {
+    id: number;
+    name: string;
+    category: string;
+}
+
+const LibraryScreen = () => {
+    const [favorites, setFavorites] = useState<Recipe[]>([]);
+    const [ownRecipes, setOwnRecipes] = useState<Recipe[]>([]);
+    const [loading, setLoading] = useState(true);
+    const navigate = useNavigate();
+    const { userId } = useParams<{ userId: string }>(); // expects userId from route like /library/:userId
+
+    useEffect(() => {
+        fetchRecipes();
+    }, []);
+
+    const fetchRecipes = async () => {
+        try {
+            const favoriteResponse = await axios.get(`http://localhost:8080/api/recipes/favorites/${userId}`);
+            const ownResponse = await axios.get(`http://localhost:8080/api/recipes/user/${userId}`);
+
+            setFavorites(favoriteResponse.data);
+            setOwnRecipes(ownResponse.data);
+        } catch (error) {
+            console.error("Fehler beim Laden der Rezepte:", error);
+        } finally {
+            setLoading(false);
+        }
+    };
+
+    const renderRecipe = (recipe: Recipe) => (
+        <div
+            key={recipe.id}
+            onClick={() => navigate(`/recipes/${recipe.id}`)}
+            style={styles.recipeCard}
+        >
+            <h4 style={{ margin: 0 }}>{recipe.name}</h4>
+            <p style={{ margin: 0, color: "#555" }}>{recipe.category}</p>
+        </div>
+    );
+
+    if (loading) {
+        return <div style={styles.loading}>Lade Rezepte...</div>;
+    }
+
+    return (
+        <div style={styles.container}>
+            <h2>Favorisierte Rezepte</h2>
+            {favorites.length === 0 ? (
+                <p>Keine Favoriten gefunden.</p>
+            ) : (
+                favorites.map(renderRecipe)
+            )}
+
+            <h2 style={{ marginTop: 30 }}>Eigene Rezepte</h2>
+            {ownRecipes.length === 0 ? (
+                <p>Du hast noch keine eigenen Rezepte.</p>
+            ) : (
+                ownRecipes.map(renderRecipe)
+            )}
+
+            <button style={styles.createButton} onClick={() => navigate("/create-recipe")}>
+                Neues Rezept erstellen
+            </button>
+        </div>
+    );
+};
+
+const styles: { [key: string]: React.CSSProperties } = {
+    container: {
+        maxWidth: 800,
+        margin: "40px auto",
+        padding: 20,
+        fontFamily: "Arial, sans-serif",
+    },
+    loading: {
+        textAlign: "center",
+        padding: 40,
+        fontSize: 18,
+    },
+    recipeCard: {
+        borderBottom: "1px solid #ddd",
+        padding: "10px 0",
+        cursor: "pointer",
+    },
+    createButton: {
+        marginTop: 30,
+        padding: "12px 20px",
+        backgroundColor: "#007bff",
+        color: "white",
+        border: "none",
+        borderRadius: 5,
+        fontSize: 16,
+        cursor: "pointer",
+    },
+};
+
+export default LibraryScreen;

frontend/src/screens/LoginScreen.tsx

@@ -0,0 +1,117 @@
+import { useState } from "react";
+import { useNavigate } from "react-router-dom";
+import { loginUser } from "../services/authService";
+import { colors, spacing, radii, fontSizes } from "../theme";
+
+const LoginScreen = () => {
+    const [email, setEmail] = useState("");
+    const [password, setPassword] = useState("");
+    const navigate = useNavigate();
+
+    const handleLogin = async () => {
+        try {
+            const token = await loginUser(email, password);
+            if (token) {
+                console.log("Login erfolgreich!", token);
+
+                // Token im localStorage speichern (Web)
+                localStorage.setItem("authToken", token);
+
+                // Navigation zur Home-Seite
+                navigate("/home");
+            } else {
+                console.log("Login fehlgeschlagen");
+            }
+        } catch (error) {
+            console.error("Fehler beim Login:", error);
+        }
+    };
+
+    return (
+        <div style={styles.wrapper}>
+            <div style={styles.container}>
+                <h2 style={styles.title}>Login</h2>
+
+                <input
+                    type="email"
+                    placeholder="E-Mail"
+                    value={email}
+                    onChange={(e) => setEmail(e.target.value)}
+                    style={styles.input}
+                />
+
+                <input
+                    type="password"
+                    placeholder="Passwort"
+                    value={password}
+                    onChange={(e) => setPassword(e.target.value)}
+                    style={styles.input}
+                />
+
+                <button onClick={handleLogin} style={styles.button}>
+                    Einloggen
+                </button>
+
+                <p style={styles.linkText} onClick={() => navigate("/register")}>
+                    Noch kein Konto? Registrieren
+                </p>
+            </div>
+        </div>
+    );
+};
+
+const styles: { [key: string]: React.CSSProperties } = {
+    wrapper: {
+        display: "flex",
+        alignItems: "center",
+        justifyContent: "center",
+        height: "100vh",           // ganzer Viewport
+        width: "100vw",
+        backgroundColor: colors.background, // optional für Theme-Kontrast
+    },
+    container: {
+        display: "flex",
+        flexDirection: "column",
+        justifyContent: "center",
+        maxWidth: "400px",
+        width: "90%",
+        margin: "10vh auto",
+        padding: spacing.lg,
+        backgroundColor: colors.surface,
+        border: `1px solid ${colors.border}`,
+        borderRadius: radii.lg,
+        boxShadow: "0 4px 12px rgba(0,0,0,0.05)",
+    },
+    title: {
+        fontSize: fontSizes.xl,
+        marginBottom: spacing.md,
+        textAlign: "center",
+        color: colors.text,
+    },
+    input: {
+        padding: spacing.md,
+        marginBottom: spacing.sm,
+        borderRadius: radii.md,
+        border: `1px solid ${colors.border}`,
+        fontSize: fontSizes.md,
+    },
+    button: {
+        padding: spacing.md,
+        backgroundColor: colors.primary,
+        color: "#fff",
+        border: "none",
+        borderRadius: radii.md,
+        cursor: "pointer",
+        fontSize: fontSizes.md,
+        marginTop: spacing.sm,
+    },
+    linkText: {
+        marginTop: spacing.sm,
+        color: colors.primary,
+        textAlign: "center",
+        cursor: "pointer",
+        fontSize: fontSizes.sm,
+    },
+};
+
+export default LoginScreen;

frontend/src/screens/Profile.tsx

@@ -0,0 +1,120 @@
+import React, { useEffect, useState } from "react";
+import { jwtDecode } from "jwt-decode";
+import { useNavigate } from "react-router-dom";
+
+const API_URL = "http://localhost:8080/users"; // Web: localhost statt 10.0.2.2
+
+const ProfileScreen = () => {
+    const [user, setUser] = useState<{ username: string; email: string } | null>(null);
+    const [loading, setLoading] = useState(true);
+    const navigate = useNavigate();
+
+    useEffect(() => {
+        const fetchUserProfile = async () => {
+            const token = localStorage.getItem("authToken");
+            if (!token) return;
+
+            try {
+                const decoded: any = jwtDecode(token);
+                const email = decoded.sub;
+
+                const response = await fetch(`${API_URL}/email/${email}`, {
+                    method: "GET",
+                    headers: {
+                        Authorization: `Bearer ${token}`,
+                        "Content-Type": "application/json",
+                    },
+                });
+
+                if (!response.ok) throw new Error("Fehler beim Laden");
+
+                const data = await response.json();
+                setUser(data);
+            } catch (error) {
+                console.error("Fehler beim Laden:", error);
+            } finally {
+                setLoading(false);
+            }
+        };
+
+        fetchUserProfile();
+    }, []);
+
+    if (loading) return <div style={styles.loader}>Lade Profil...</div>;
+
+    return (
+        <div style={styles.container}>
+            {/* Header */}
+            <div style={styles.headerRow}>
+                <h2 style={styles.welcomeText}>Hi, {user?.username || "User"}!</h2>
+                <button
+                    style={styles.settingsButton}
+                    onClick={() => alert("Settings-Funktion folgt")}
+                >
+                    ⚙️
+                </button>
+            </div>
+
+            {/* Bearbeiten */}
+            <div style={{ marginTop: 30 }}>
+                <button style={styles.editButton} onClick={() => navigate("/edit-profile")}>
+                    Profil bearbeiten
+                </button>
+            </div>
+
+            {/* Placeholder für Inhalte */}
+            <div style={styles.placeholder}>
+                <p>Hier kommen später Rezepte.</p>
+            </div>
+        </div>
+    );
+};
+
+const styles: { [key: string]: React.CSSProperties } = {
+    container: {
+        maxWidth: "600px",
+        margin: "50px auto",
+        padding: "20px",
+        border: "1px solid #ddd",
+        borderRadius: "10px",
+        backgroundColor: "#f9f9f9",
+    },
+    loader: {
+        display: "flex",
+        justifyContent: "center",
+        alignItems: "center",
+        height: "100vh",
+        fontSize: "20px",
+    },
+    headerRow: {
+        display: "flex",
+        justifyContent: "space-between",
+        alignItems: "center",
+    },
+    welcomeText: {
+        fontSize: "24px",
+        fontWeight: "bold",
+    },
+    settingsButton: {
+        fontSize: "20px",
+        background: "none",
+        border: "none",
+        cursor: "pointer",
+    },
+    editButton: {
+        padding: "10px 20px",
+        fontSize: "16px",
+        backgroundColor: "#007bff",
+        color: "#fff",
+        border: "none",
+        borderRadius: "5px",
+        cursor: "pointer",
+    },
+    placeholder: {
+        marginTop: 40,
+        textAlign: "center",
+        color: "#555",
+    },
+};
+
+export default ProfileScreen;

frontend/src/screens/RegisterScreen.tsx

@@ -0,0 +1,124 @@
+import { useState } from "react";
+import { useNavigate } from "react-router-dom";
+import { registerUser } from "../services/authService";
+
+const RegistrationScreen = () => {
+    const [username, setUsername] = useState("");
+    const [email, setEmail] = useState("");
+    const [password, setPassword] = useState("");
+    const [confirmPassword, setConfirmPassword] = useState("");
+    const [errorMessage, setErrorMessage] = useState("");
+    const navigate = useNavigate();
+
+    const handleRegister = async () => {
+        if (password !== confirmPassword) {
+            setErrorMessage("Passwörter stimmen nicht überein.");
+            return;
+        }
+
+        try {
+            const result = await registerUser(email, password, username);
+            if (result) {
+                console.log("Registrierung erfolgreich!");
+                navigate("/login");
+            } else {
+                setErrorMessage("Registrierung fehlgeschlagen.");
+            }
+        } catch (error) {
+            console.error("Fehler bei der Registrierung:", error);
+            setErrorMessage("Es gab ein Problem bei der Registrierung.");
+        }
+    };
+
+    return (
+        <div style={styles.container}>
+            <h2 style={styles.title}>Registrierung</h2>
+
+            <input
+                type="text"
+                placeholder="Username"
+                value={username}
+                onChange={(e) => setUsername(e.target.value)}
+                style={styles.input}
+            />
+            <input
+                type="email"
+                placeholder="E-Mail"
+                value={email}
+                onChange={(e) => setEmail(e.target.value)}
+                style={styles.input}
+            />
+            <input
+                type="password"
+                placeholder="Passwort"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                style={styles.input}
+            />
+            <input
+                type="password"
+                placeholder="Passwort bestätigen"
+                value={confirmPassword}
+                onChange={(e) => setConfirmPassword(e.target.value)}
+                style={styles.input}
+            />
+
+            {errorMessage && <p style={styles.errorText}>{errorMessage}</p>}
+
+            <button onClick={handleRegister} style={styles.button}>
+                Registrieren
+            </button>
+
+            <p onClick={() => navigate("/login")} style={styles.linkText}>
+                Schon ein Konto? Einloggen
+            </p>
+        </div>
+    );
+};
+
+const styles: { [key: string]: React.CSSProperties } = {
+    container: {
+        display: "flex",
+        flexDirection: "column",
+        maxWidth: "400px",
+        margin: "100px auto",
+        padding: "20px",
+        border: "1px solid #ccc",
+        borderRadius: "8px",
+        boxShadow: "0 0 10px rgba(0, 0, 0, 0.1)",
+    },
+    title: {
+        fontSize: "24px",
+        marginBottom: "20px",
+        textAlign: "center",
+    },
+    input: {
+        padding: "10px",
+        marginBottom: "10px",
+        borderRadius: "5px",
+        border: "1px solid #ccc",
+        fontSize: "16px",
+    },
+    button: {
+        padding: "10px",
+        backgroundColor: "#007bff",
+        color: "#fff",
+        border: "none",
+        borderRadius: "5px",
+        cursor: "pointer",
+        fontSize: "16px",
+    },
+    linkText: {
+        marginTop: "10px",
+        color: "#007bff",
+        textAlign: "center",
+        cursor: "pointer",
+    },
+    errorText: {
+        color: "red",
+        textAlign: "center",
+        marginBottom: "10px",
+    },
+};
+
+export default RegistrationScreen;

frontend/src/services/AppNavigator.tsx

@@ -0,0 +1,75 @@
+import {useEffect, useState} from "react";
+import {Routes, Route, Navigate, Link} from "react-router-dom";
+import {jwtDecode} from "jwt-decode";
+
+import Home from "../screens/Home";
+import LoginScreen from "../screens/LoginScreen";
+import RegisterScreen from "../screens/RegisterScreen";
+import Profile from "../screens/Profile";
+import EditProfileScreen from "../screens/EditProfileScreen";
+import LibraryScreen from "../screens/LibraryScreen";
+
+import {MdHome, MdList, MdPerson} from "react-icons/md"; // Web Icons
+
+// Token validieren mit localStorage
+const isTokenValid = () => {
+    const token = localStorage.getItem("authToken");
+    if (!token) return false;
+
+    try {
+        const decoded: any = jwtDecode(token);
+        return decoded.exp && decoded.exp > Math.floor(Date.now() / 1000);
+    } catch (error) {
+        return false;
+    }
+};
+
+// Web-basierte BottomTabs
+const BottomTabs = () => (
+    <nav style={{display: "flex", gap: 20, justifyContent: "center", marginBottom: 20}}>
+        <Link to="/"><MdHome size={24}/> Home</Link>
+        <Link to="/library"><MdList size={24}/> Library</Link>
+        <Link to="/profile"><MdPerson size={24}/> Profile</Link>
+    </nav>
+);
+
+const AppNavigator = () => {
+    const [isLoggedIn, setIsLoggedIn] = useState<boolean | null>(null);
+
+    useEffect(() => {
+        setIsLoggedIn(isTokenValid());
+    }, []);
+
+    if (isLoggedIn === null) {
+        return (
+            <div style={{textAlign: "center", marginTop: "2rem"}}>
+                <p>Loading...</p>
+            </div>
+        );
+    }
+
+    if (!isLoggedIn) {
+        return (
+            <Routes>
+                <Route path="/login" element={<LoginScreen/>}/>
+                <Route path="/register" element={<RegisterScreen/>}/>
+                <Route path="*" element={<Navigate to="/login"/>}/>
+            </Routes>
+        );
+    }
+
+    return (
+        <>
+            <BottomTabs/>
+            <Routes>
+                <Route path="/" element={<Home/>}/>
+                <Route path="/library" element={<LibraryScreen/>}/>
+                <Route path="/profile" element={<Profile/>}/>
+                <Route path="/edit-profile" element={<EditProfileScreen/>}/>
+                <Route path="*" element={<Navigate to="/"/>}/>
+            </Routes>
+        </>
+    );
+};
+
+export default AppNavigator;

frontend/src/services/authService.ts

@@ -0,0 +1,50 @@
+const API_URL = "http://localhost:8080/api/auth";
+export const loginUser = async (email: string, password: string) => {
+    try {
+        const response = await fetch(`${API_URL}/login`, {
+            method: "POST",
+            headers: {
+                "Content-Type": "application/json"
+            },
+            body: JSON.stringify({email, password})
+        });
+        const data = await response.json();
+
+        if (!response.ok) {
+            throw new Error("Login fehlgeschlagen");
+        }
+
+        return data.token; // Token zurückgeben
+    } catch (error) {
+        console.error("Fehler beim Login:", error);
+        return null;
+    }
+};
+export const registerUser = async (email: string, password: string, username: string) => {
+    try {
+        // Die Daten, die an das Backend gesendet werden
+        const userData = {email, password, username};
+
+        // Anfrage an das Backend
+        const response = await fetch(`${API_URL}/register`, {
+            method: "POST",
+            headers: {
+                "Content-Type": "application/json",
+            },
+            body: JSON.stringify(userData),
+        });
+
+        // Überprüfen, ob die Antwort erfolgreich war
+        if (!response.ok) {
+            const errorMessage = await response.text();
+            throw new Error(errorMessage); // Beispiel für Fehlermeldung, falls E-Mail oder Username bereits vergeben
+        }
+
+        return userData // Erfolgreiche Antwort, z.B. der neue User
+    } catch (error) {
+        console.error("Fehler bei der Registrierung:", error);
+        throw error; // Fehler weitergeben, damit der Benutzer entsprechend reagieren kann
+    }
+};
+
+

frontend/src/theme.ts

@@ -0,0 +1,34 @@
+// theme.ts
+
+export const colors = {
+    primary: "#007bff",
+    primaryDark: "#0056b3",
+    background: "#f5f5f5",
+    surface: "#ffffff",
+    text: "#333333",
+    muted: "#666666",
+    border: "#cccccc",
+    error: "#ff4d4f",
+};
+
+export const spacing = {
+    xs: 4,
+    sm: 8,
+    md: 16,
+    lg: 24,
+    xl: 32,
+};
+
+export const radii = {
+    sm: 4,
+    md: 8,
+    lg: 12,
+    xl: 20,
+};
+
+export const fontSizes = {
+    sm: 14,
+    md: 16,
+    lg: 20,
+    xl: 28,
+};

frontend/src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

frontend/tsconfig.app.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src"]
+}

frontend/tsconfig.json

@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}

frontend/tsconfig.node.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ES2022",
+    "lib": ["ES2023"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["vite.config.ts"]
+}

frontend/vite.config.ts

@@ -0,0 +1,25 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    proxy: {
+      '/api': {
+        target: 'http://localhost:8080',
+        secure: false,
+        changeOrigin: true,
+        ws: true,
+        /*configure: (proxy) => {
+            proxy.on('error', (err, _req, _res) => {
+                console.error(err);
+            })
+            proxy.on('proxyReq', (_proxyReq, req, _res) => {
+                console.log("Anfrage an Proxy: ", req.method, req.url);
+            })
+        }*/
+      }
+    }
+  }
+})

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

@@ -1,13 +0,0 @@
-package com.example.hangry;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@SpringBootApplication
-public class HangryApplication {
-
-	public static void main(String[] args) {
-		SpringApplication.run(HangryApplication.class, args);
-	}
-
-}

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

@@ -1,81 +0,0 @@
-package com.example.hangry;
-
-import jakarta.persistence.*;
-import java.util.List;
-
-@Entity
-public class Recipe {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    private String name;
-    private String description;
-    private String category;
-    private String imageUrl;
-
-    @OneToMany(mappedBy = "recipe", cascade = CascadeType.ALL, orphanRemoval = true)
-    private List<RecipeIngredient> recipeIngredients;
-
-    public Recipe() {
-    }
-
-    public Recipe(String name, String description, String category, String imageUrl) {
-        this.name = name;
-        this.description = description;
-        this.category = category;
-        this.imageUrl = imageUrl;
-    }
-
-    // Getter und Setter
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public String getDescription() {
-        return description;
-    }
-
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    public String getCategory() {
-        return category;
-    }
-
-    public void setCategory(String category) {
-        this.category = category;
-    }
-
-    public String getImageUrl() {
-        return imageUrl;
-    }
-
-    public void setImageUrl(String imageUrl) {
-        this.imageUrl = imageUrl;
-    }
-
-    public List<RecipeIngredient> getRecipeIngredients() {
-        return recipeIngredients;
-    }
-
-    public void setRecipeIngredients(List<RecipeIngredient> recipeIngredients) {
-        this.recipeIngredients = recipeIngredients;
-    }
-
-
-}