feat: Implement instructor search and improve instructor management with email/username lookup and avatar presigned URLs.

Backend/src/services/auth.service.ts

@@ -16,6 +16,7 @@ import {
 import { UserResponse } from '../types/user.types';
 import { UnauthorizedError, ValidationError, ForbiddenError } from '../middleware/errorHandler';
 import nodemailer from 'nodemailer';
+import { getPresignedUrl } from '../config/minio';
 
 export class AuthService {
     /**
@@ -59,7 +60,7 @@ export class AuthService {
         return {
             token,
             refreshToken,
-            user: this.formatUserResponse(user)
+            user: await this.formatUserResponse(user)
         };
     }
 
@@ -134,7 +135,7 @@ export class AuthService {
         logger.info('New user registered', { userId: user.id, username: user.username });
 
         return {
-            user: this.formatUserResponse(user),
+            user: this.formatUserResponseSync(user),
             message: 'Registration successful'
         };
     }
@@ -207,10 +208,10 @@ export class AuthService {
         logger.info('New user registered', { userId: user.id, username: user.username });
 
         return {
-            user: this.formatUserResponse(user),
+            user: this.formatUserResponseSync(user),
             message: 'Registration successful'
         };
-    }   
+    }
 
     /**
      * Refresh access token
@@ -370,9 +371,43 @@ export class AuthService {
     }
 
     /**
-     * Format user response
+     * Format user response with presigned URL for avatar (for login)
      */
-    private formatUserResponse(user: any): UserResponse {
+    private async formatUserResponse(user: any): Promise<UserResponse> {
+        let avatar_url: string | null = null;
+        if (user.profile?.avatar_url) {
+            try {
+                avatar_url = await getPresignedUrl(user.profile.avatar_url, 3600);
+            } catch (err) {
+                logger.warn(`Failed to generate presigned URL for avatar: ${err}`);
+            }
+        }
+
+        return {
+            id: user.id,
+            username: user.username,
+            email: user.email,
+            updated_at: user.updated_at,
+            created_at: user.created_at,
+            role: {
+                code: user.role.code,
+                name: user.role.name
+            },
+            profile: user.profile ? {
+                prefix: user.profile.prefix,
+                first_name: user.profile.first_name,
+                last_name: user.profile.last_name,
+                phone: user.profile.phone,
+                avatar_url: avatar_url,
+                birth_date: user.profile.birth_date
+            } : undefined
+        };
+    }
+
+    /**
+     * Format user response without presigned URL (for register)
+     */
+    private formatUserResponseSync(user: any): UserResponse {
         return {
             id: user.id,
             username: user.username,
@@ -393,6 +428,4 @@ export class AuthService {
             } : undefined
         };
     }
-
-
 }