首个可运行的版本

backend/app/schemas/auth.py

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+"""认证相关 Schema"""
+
+from pydantic import BaseModel, EmailStr, Field
+
+
+class RegisterRequest(BaseModel):
+    username: str = Field(..., min_length=2, max_length=50)
+    email: EmailStr
+    password: str = Field(..., min_length=6, max_length=100)
+
+
+class LoginRequest(BaseModel):
+    username: str
+    password: str
+
+
+class TokenResponse(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+    user: "UserBrief"
+
+
+class RefreshRequest(BaseModel):
+    refresh_token: str
+
+
+class UserBrief(BaseModel):
+    id: str
+    username: str
+    avatar_url: str | None = None
+    is_admin: bool = False
+
+    model_config = {"from_attributes": True}