96 lines
3.3 KiB
Python
96 lines
3.3 KiB
Python
from __future__ import annotations
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from datetime import datetime, timezone
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from typing import List, Optional
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import pytz
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from flask_sqlalchemy import SQLAlchemy
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from sqlalchemy import Column, DateTime, String, TypeDecorator
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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db : SQLAlchemy = SQLAlchemy()
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deck_password = db.Table(
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"deck_password",
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Column("deck_id", db.Integer, db.ForeignKey("deck.id"), primary_key=True),
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Column("password_id", db.Integer, db.ForeignKey("password.id"), primary_key=True)
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)
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deck_token = db.Table(
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"deck_token",
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Column("deck_id", db.Integer, db.ForeignKey("deck.id"), primary_key=True),
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Column("token_id", db.Integer, db.ForeignKey("token.id"), primary_key=True)
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)
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class UTCDateTime(TypeDecorator):
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impl = DateTime
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def process_bind_param(self, value, dialect):
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# Ensure datetime is stored in naive UTC
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if value is not None and value.tzinfo is not None:
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value = value.astimezone(pytz.utc).replace(tzinfo=None)
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return value
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def process_result_value(self, value, dialect):
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# Re-attach UTC tzinfo when reading
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if value is not None:
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value = value.replace(tzinfo=pytz.utc)
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return value
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class Password(db.Model):
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__tablename__ = "password"
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id : Mapped[int] = mapped_column(primary_key=True)
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value : Mapped[str] = mapped_column(String(60))
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expires_at: Mapped[Optional[datetime]] = mapped_column(UTCDateTime()) # Optional expiration
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decks : Mapped[List[Deck]] = relationship("Deck", secondary=deck_password, back_populates='passwords')
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def __init__(self, value: str, expires_at: datetime|None) -> None:
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self.value = value
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self.expires_at = expires_at
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def is_expired(self) -> bool:
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"""Check if the password is expired"""
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return self.expires_at is not None and datetime.now(timezone.utc) > self.expires_at
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def __repr__(self) -> str:
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return f"<Password(value={self.value}, expires_at={self.expires_at})>"
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class Deck(db.Model):
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__tablename__ = "deck"
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id : Mapped[int] = mapped_column(primary_key=True)
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name : Mapped[str] = mapped_column(String(60), unique=True, nullable=False)
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deck : Mapped[str] = mapped_column(String(60), unique=True, nullable=False)
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description : Mapped[str] = mapped_column(String(60))
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passwords : Mapped[List[Password]] = relationship("Password", secondary=deck_password, back_populates='decks')
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tokens : Mapped[List[Token]] = relationship("Token", secondary=deck_token, back_populates='decks')
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def __init__(self, name: str, deck: str, description: str = "") -> None:
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self.name = name
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self.deck = deck
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self.description = description
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def __repr__(self) -> str:
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return f"<Deck(name={self.name}, deck={self.deck})>"
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class Token(db.Model):
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__tablename__ = "token"
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id : Mapped[int] = mapped_column(primary_key=True)
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name: Mapped[str] = mapped_column(String(60), unique=True, nullable=False)
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decks : Mapped[List[Deck]]= relationship("Deck", secondary=deck_token, back_populates='tokens')
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def __init__(self, name: str) -> None:
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self.name = name
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def __repr__(self) -> str:
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return f"<Token(id={self.id})>"
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def is_unlocked(self, deck: str) -> bool :
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return deck in [deck.deck for deck in self.decks]
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