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LMS/backend/app/schemas.py
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from datetime import datetime
from pydantic import BaseModel, EmailStr, field_validator
import re
from .models import UserRole, UserStatus
# ── Auth ─────────────────────────────────────────────────────────────────────
class UserRegister(BaseModel):
username: str
email: EmailStr
password: str
role: UserRole = UserRole.student
@field_validator("username")
@classmethod
def username_valid(cls, v: str) -> str:
v = v.strip()
if not re.match(r"^[A-Za-z0-9_]{3,64}$", v):
raise ValueError(
"Username must be 364 characters, letters/numbers/underscore only."
)
return v
@field_validator("password")
@classmethod
def password_strength(cls, v: str) -> str:
if len(v) < 8:
raise ValueError("Password must be at least 8 characters.")
return v
class UserLogin(BaseModel):
username: str
password: str
class UserOut(BaseModel):
id: int
username: str
email: str
role: UserRole
status: UserStatus
created_at: datetime
model_config = {"from_attributes": True}
class UserApprove(BaseModel):
status: UserStatus
class UserRoleUpdate(BaseModel):
role: UserRole
class TokenPayload(BaseModel):
sub: int # user id
exp: int
# ── PDFs ──────────────────────────────────────────────────────────────────────
class PDFOut(BaseModel):
id: int
user_id: int
owner_username: str
title: str
total_pages: int | None
created_at: datetime
model_config = {"from_attributes": True}
class PDFUploadResult(BaseModel):
filename: str
success: bool
pdf: PDFOut | None = None
error: str | None = None
# ── Annotations ───────────────────────────────────────────────────────────────
class AnnotationIn(BaseModel):
canvas_data: dict
class AnnotationOut(BaseModel):
id: int
pdf_id: int
page_number: int
canvas_data: dict
updated_at: datetime
model_config = {"from_attributes": True}