first commit

backend/app/schemas/token.py

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+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str = "bearer"
+    expires_in: int
+    user: dict
+
+
+class TokenPayload(BaseModel):
+    sub: int
+    exp: datetime
+    type: str
+
+
+class TokenRefresh(BaseModel):
+    access_token: str
+    expires_in: int