AccountController.java

// AccountController.java
// This controller handles all account-related operations such as registration, login, and user management.

import org.springframework.web.bind.annotation.*;
import org.springframework.http.ResponseEntity;
import org.springframework.http.HttpStatus;

@RestController
@RequestMapping("/api/account")
public class AccountController {

    /**
     * Registers a new user. This method accepts user credentials and creates a new account.
     *
     * @param user the user information provided during registration
     * @return ResponseEntity containing the status of the request
     */
    @PostMapping("/register")
    public ResponseEntity<?> register(@RequestBody User user) {
        // Registration logic...
        return ResponseEntity.status(HttpStatus.CREATED).body("User registered successfully");
    }
    
    /**
     * Authenticates a user. This method accepts login credentials and returns an authentication token if valid.
     *
     * @param loginRequest the login information including username and password
     * @return ResponseEntity containing authentication token
     */
    @PostMapping("/login")
    public ResponseEntity<?> login(@RequestBody LoginRequest loginRequest) {
        // Authentication logic...
        return ResponseEntity.ok("Authentication token");
    }
    
    /**
     * Gets account details for the authenticated user. 
     *
     * @param userId the ID of the user whose details are to be fetched
     * @return ResponseEntity containing user account details
     */
    @GetMapping("/{userId}")
    public ResponseEntity<?> getAccountDetails(@PathVariable String userId) {
        // Logic to fetch user account details...
        return ResponseEntity.ok("User account details");
    }

    /**
     * Updates user account information. 
     *
     * @param userId the ID of the user to be updated
     * @param userDetails the new user information to update
     * @return ResponseEntity indicating the status of the update
     */
    @PutMapping("/{userId}")
    public ResponseEntity<?> updateAccount(@PathVariable String userId, @RequestBody User userDetails) {
        // Logic to update user account...
        return ResponseEntity.ok("User account updated successfully");
    }

    /**
     * Deletes a user account. This method removes the account of the specified user.
     *
     * @param userId the ID of the user to be deleted
     * @return ResponseEntity indicating the success or failure of the delete operation
     */
    @DeleteMapping("/{userId}")
    public ResponseEntity<?> deleteAccount(@PathVariable String userId) {
        // Logic to delete user account...
        return ResponseEntity.status(HttpStatus.NO_CONTENT).build();
    }
}