src/main/java/de/zendric/app/XpenselyServer/controller/AppUserController.java

@@ -0,0 +1,45 @@
+package de.zendric.app.XpenselyServer.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.zendric.app.XpenselyServer.model.AppUser;
+import de.zendric.app.XpenselyServer.services.UserService;
+
+@RestController
+@RequestMapping("/api/users")
+public class AppUserController {
+    
+    private UserService userService;
+    
+    @Autowired
+    public AppUserController(UserService userService){
+        this.userService= userService;
+    }
+    
+    @GetMapping
+    public AppUser getUser(@RequestParam Long id){
+        return userService.getUser(id);
+    }
+
+    @PostMapping
+    public ResponseEntity<AppUser> createUser(@RequestBody AppUser user){
+        AppUser appUser = userService.createUser(user);
+    return ResponseEntity.status(HttpStatus.CREATED).body(appUser);
+    }
+
+
+    @DeleteMapping
+    public String deleteUser(@RequestParam Long id){
+                AppUser user = userService.deleteUserById(id);
+        return "User deleted : "+ user.getUsername();
+    }
+}

src/main/java/de/zendric/app/XpenselyServer/model/AppUser.java

@@ -4,12 +4,16 @@ import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
+import lombok.AllArgsConstructor;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 @Entity
 @Getter
 @Setter
+@AllArgsConstructor
+@NoArgsConstructor
 public class AppUser {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -17,6 +21,6 @@ public class AppUser {
 
     private String username;
     private String password;
+    private String email;
 
-  
 }

src/main/java/de/zendric/app/XpenselyServer/repo/ExpenseRepository.java

@@ -0,0 +1,9 @@
+package de.zendric.app.XpenselyServer.repo;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import de.zendric.app.XpenselyServer.model.Expense;
+
+@Repository
+public interface ExpenseRepository extends JpaRepository<Expense, Long> {}

src/main/java/de/zendric/app/XpenselyServer/repo/UserRepository.java

@@ -0,0 +1,9 @@
+package de.zendric.app.XpenselyServer.repo;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import de.zendric.app.XpenselyServer.model.AppUser;
+
+@Repository
+public interface UserRepository extends JpaRepository<AppUser, Long> {}

src/main/java/de/zendric/app/XpenselyServer/security/SecurityConfig.java

@@ -0,0 +1,19 @@
+package de.zendric.app.XpenselyServer.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.web.SecurityFilterChain;
+
+@Configuration
+public class SecurityConfig {
+
+    @Bean
+    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+        http
+            .csrf().disable() // Disable CSRF for testing
+            .authorizeHttpRequests()
+            .anyRequest().permitAll(); // Allow all requests
+        return http.build();
+    }
+}

src/main/java/de/zendric/app/XpenselyServer/services/UserService.java

@@ -0,0 +1,43 @@
+package de.zendric.app.XpenselyServer.services;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import de.zendric.app.XpenselyServer.model.AppUser;
+import de.zendric.app.XpenselyServer.repo.UserRepository;
+
+@Service
+public class UserService {
+    private final UserRepository userRepository;
+
+    public UserService(UserRepository userRepository) {
+        this.userRepository = userRepository;
+    }
+
+    public List<AppUser> getAllUsers() {
+        return userRepository.findAll();
+    }
+
+    public AppUser createUser(AppUser user) {
+        return userRepository.save(user);
+    }
+
+    public AppUser getUser(Long id) {
+        Optional<AppUser> user= userRepository.findById(id);
+        if (user.isPresent()) {
+            return user.get();
+        }
+        else return null;
+    }
+
+    public AppUser deleteUserById(Long id) {
+        Optional<AppUser> user= userRepository.findById(id);
+        if (user.isPresent()) {
+            userRepository.deleteById(id);
+            return user.get();
+        }
+        else return null;
+    }
+}