mod user (avatar generator)

backend/open_webui/models/users.py

@@ -7,6 +7,8 @@ from open_webui.internal.db import Base, JSONField, get_db
 from open_webui.models.chats import Chats
 from open_webui.models.groups import Groups
 
+from PIL import Image, ImageDraw, ImageFont
+import random
 
 from pydantic import BaseModel, ConfigDict
 from sqlalchemy import BigInteger, Column, String, Text, JSON
@@ -342,6 +344,36 @@ class UsersTable:
             users = db.query(User).filter(User.id.in_(user_ids)).all()
             return [user.id for user in users]
 
+    def generate_letter_image(letter, image_size=(200, 200), font_size=100, font_path=None):
+        """
+        Generuje obraz z podaną literą i losowym kolorem tła.
+        
+        :param letter: Pojedyncza litera do wyświetlenia
+        :param image_size: Rozmiar obrazu (szerokość, wysokość)
+        :param font_size: Rozmiar czcionki
+        :param font_path: Ścieżka do pliku czcionki (jeśli None, używana jest domyślna)
+        """
+        if not isinstance(letter, str) or len(letter) != 1:
+            raise ValueError("Parametr 'letter' musi być pojedynczym znakiem.")
+        
+        background_color = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
+        text_color = (255, 255, 255)  # Biały kolor czcionki
+        
+        image = Image.new("RGB", image_size, background_color)
+        draw = ImageDraw.Draw(image)
+        
+        try:
+            font = ImageFont.truetype(font_path if font_path else "arial.ttf", font_size)
+        except IOError:
+            font = ImageFont.load_default()
+        
+        text_width, text_height = draw.textsize(letter, font=font)
+        text_x = (image_size[0] - text_width) // 2
+        text_y = (image_size[1] - text_height) // 2
+        
+        draw.text((text_x, text_y), letter, font=font, fill=text_color)
+        return image
+
     def update_user_profile(self, id: str, name: str, profile_image_url: str, role: str, permissions: Optional[dict] = None, subscription: Optional[List[str]] = None) -> bool:
         try:
             with get_db() as db: