/@me route

pom.xml

@@ -68,6 +68,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
 
         <!-- Libraries -->
         <dependency>

src/main/java/cc/pulseapp/api/PulseAPI.java

@@ -5,6 +5,7 @@ import lombok.SneakyThrows;
 import lombok.extern.log4j.Log4j2;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.security.servlet.UserDetailsServiceAutoConfiguration;
 
 import java.io.File;
 import java.nio.file.Files;
@@ -14,7 +15,7 @@ import java.util.Objects;
 /**
  * @author Braydon
  */
-@SpringBootApplication
+@SpringBootApplication(exclude = UserDetailsServiceAutoConfiguration.class)
 @Log4j2(topic = "PulseApp")
 public class PulseAPI {
     @SneakyThrows

src/main/java/cc/pulseapp/api/controller/v1/AuthController.java

@@ -25,7 +25,7 @@ import org.springframework.web.bind.annotation.RestController;
 @RequestMapping(value = "/v1/auth", produces = MediaType.APPLICATION_JSON_VALUE)
 public final class AuthController {
     /**
-     * The user service to use.
+     * The auth service to use.
      */
     @NonNull private final AuthService authService;
 

src/main/java/cc/pulseapp/api/controller/v1/UserController.java

@@ -0,0 +1,43 @@
+package cc.pulseapp.api.controller.v1;
+
+import cc.pulseapp.api.model.user.UserDTO;
+import cc.pulseapp.api.service.UserService;
+import lombok.NonNull;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * This controller is responsible for
+ * handling user authentication requests.
+ *
+ * @author Braydon
+ */
+@RestController
+@RequestMapping(value = "/v1/user", produces = MediaType.APPLICATION_JSON_VALUE)
+public final class UserController {
+    /**
+     * The user service to use.
+     */
+    @NonNull private final UserService userService;
+
+    @Autowired
+    public UserController(@NonNull UserService userService) {
+        this.userService = userService;
+    }
+
+    /**
+     * A GET endpoint to get the
+     * currently authenticated user.
+     *
+     * @return the currently authenticated user
+     */
+    @PostMapping("/@me") @ResponseBody @NonNull
+    public ResponseEntity<UserDTO> getUser() {
+        return ResponseEntity.ok(userService.getUser());
+    }
+}

src/main/java/cc/pulseapp/api/exception/impl/ResourceNotFoundException.java

@@ -0,0 +1,19 @@
+package cc.pulseapp.api.exception.impl;
+
+import cc.pulseapp.api.model.IGenericResponse;
+import lombok.NonNull;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+/**
+ * This exception is raised
+ * when a resource is not found.
+ *
+ * @author Braydon
+ */
+@ResponseStatus(HttpStatus.NOT_FOUND)
+public final class ResourceNotFoundException extends RuntimeException {
+    public ResourceNotFoundException(@NonNull IGenericResponse error) {
+        super(error.name());
+    }
+}

src/main/java/cc/pulseapp/api/model/page/StatusPage.java

@@ -34,12 +34,12 @@ public final class StatusPage {
     @NonNull private final String slug;
 
     /**
-     * The id to the logo of this status page, if any.
+     * The hash to the logo of this status page, if any.
      */
     private final String logo;
 
     /**
-     * The id to the banner of this status page, if any.
+     * The hash to the banner of this status page, if any.
      */
     private final String banner;
 

src/main/java/cc/pulseapp/api/model/user/User.java

@@ -39,6 +39,11 @@ public final class User {
      */
     @NonNull private final String passwordSalt;
 
+    /**
+     * The hash to the avatar of this user, if any.
+     */
+    private final String avatar;
+
     /**
      * The tier of this user.
      */
@@ -47,13 +52,22 @@ public final class User {
     /**
      * The flags for this user.
      */
-    private final int flags;
+    private int flags;
 
     /**
      * The date this user last logged in.
      */
     @NonNull private Date lastLogin;
 
+    /**
+     * Add a flag to this user.
+     *
+     * @param flag the flag to add
+     */
+    public void addFlag(@NonNull UserFlag flag) {
+        flags |= flag.ordinal();
+    }
+
     /**
      * Check if this user has a given flag.
      *

src/main/java/cc/pulseapp/api/service/AuthService.java

@@ -5,6 +5,7 @@ import cc.pulseapp.api.common.HashUtils;
 import cc.pulseapp.api.common.RequestUtils;
 import cc.pulseapp.api.common.StringUtils;
 import cc.pulseapp.api.exception.impl.BadRequestException;
+import cc.pulseapp.api.exception.impl.ResourceNotFoundException;
 import cc.pulseapp.api.model.IGenericResponse;
 import cc.pulseapp.api.model.user.Session;
 import cc.pulseapp.api.model.user.User;
@@ -17,6 +18,7 @@ import cc.pulseapp.api.repository.UserRepository;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.NonNull;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.stereotype.Service;
 
 import java.util.Base64;
@@ -81,7 +83,7 @@ public final class AuthService {
         return generateSession(request, userRepository.save(new User(
                 snowflakeService.generateSnowflake(), input.getEmail(), input.getUsername(),
                 HashUtils.hash(salt, input.getPassword()), Base64.getEncoder().encodeToString(salt),
-                UserTier.FREE, 0, now
+                null, UserTier.FREE, 0, now
         )));
     }
 
@@ -111,6 +113,38 @@ public final class AuthService {
         return generateSession(request, userRepository.save(user));
     }
 
+    /**
+     * Get the authenticated user.
+     *
+     * @return the authenticated user
+     * @throws ResourceNotFoundException if the user doesn't exist
+     */
+    @NonNull
+    public User getAuthenticatedUser() throws ResourceNotFoundException {
+        Session session = (Session) SecurityContextHolder.getContext().getAuthentication().getCredentials();
+        return getUserFromSnowflake(session.getUserSnowflake());
+    }
+
+    /**
+     * Get a user from a snowflake, if the user exists.
+     *
+     * @param snowflake the snowflake of the user
+     * @return the user from the snowflake
+     * @throws BadRequestException       if the snowflake is invalid
+     * @throws ResourceNotFoundException if the user doesn't exist
+     */
+    @NonNull
+    public User getUserFromSnowflake(long snowflake) {
+        if (snowflake < 1L) {
+            throw new ResourceNotFoundException(Error.USER_NOT_FOUND);
+        }
+        User user = userRepository.findById(snowflake).orElse(null);
+        if (user == null) {
+            throw new ResourceNotFoundException(Error.USER_NOT_FOUND);
+        }
+        return user;
+    }
+
     /**
      * Generate an auth token for a user.
      *

src/main/java/cc/pulseapp/api/service/UserService.java

@@ -0,0 +1,34 @@
+package cc.pulseapp.api.service;
+
+import cc.pulseapp.api.model.user.User;
+import cc.pulseapp.api.model.user.UserDTO;
+import lombok.NonNull;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+
+/**
+ * @author Braydon
+ */
+@Service
+public final class UserService {
+    @NonNull private final AuthService authService;
+
+    /**
+     * The service to use for snowflake timestamp extraction.
+     */
+    @NonNull private final SnowflakeService snowflakeService;
+
+    @Autowired
+    public UserService(@NonNull AuthService authService, @NonNull SnowflakeService snowflakeService) {
+        this.authService = authService;
+        this.snowflakeService = snowflakeService;
+    }
+
+    @NonNull
+    public UserDTO getUser() {
+        User user = authService.getAuthenticatedUser();
+        return UserDTO.asDTO(user, new Date(snowflakeService.extractCreationTime(user.getSnowflake())));
+    }
+}