feat(user): support login with any case of username & email

app/router/auth.py

@@ -42,7 +42,7 @@ from fastapi import APIRouter, Depends, Form, Request
 from fastapi.responses import JSONResponse
 from redis.asyncio import Redis
 from sqlalchemy import text
-from sqlmodel import select
+from sqlmodel import exists, select
 
 
 def create_oauth_error_response(error: str, description: str, hint: str, status_code: int = 400):
@@ -101,12 +101,12 @@ async def register_user(
     email_errors = validate_email(user_email)
     password_errors = validate_password(user_password)
 
-    result = await db.exec(select(User).where(User.username == user_username))
+    result = await db.exec(select(exists()).where(User.username == user_username))
     existing_user = result.first()
     if existing_user:
         username_errors.append("Username is already taken")
 
-    result = await db.exec(select(User).where(User.email == user_email))
+    result = await db.exec(select(exists()).where(User.email == user_email))
     existing_email = result.first()
     if existing_email:
         email_errors.append("Email is already taken")

app/router/private/username.py

@@ -11,7 +11,7 @@ from app.utils import utcnow
 from .router import router
 
 from fastapi import Body, HTTPException, Security
-from sqlmodel import select
+from sqlmodel import exists, select
 
 
 @router.post(
@@ -34,7 +34,7 @@ async def user_rename(
     返回:
     - 成功: None
     """
-    samename_user = (await session.exec(select(User).where(User.username == new_name))).first()
+    samename_user = (await session.exec(select(exists()).where(User.username == new_name))).first()
     if samename_user:
         raise HTTPException(409, "Username Exisits")
     errors = validate_username(new_name)