"""
©AngelaMos | 2026
OneTimePrekey.py
"""

from uuid import UUID

from sqlmodel import Field

from app.config import ONE_TIME_PREKEY_LENGTH
from app.models.Base import BaseDBModel


class OneTimePrekey(BaseDBModel, table = True):
    """
    X25519 one time prekey public half consumed after single use
    """
    __tablename__ = "one_time_prekeys"

    id: int = Field(default = None, primary_key = True)
    user_id: UUID = Field(
        foreign_key = "users.id",
        nullable = False,
        index = True
    )

    key_id: int = Field(nullable = False, index = True)

    public_key: str = Field(
        nullable = False,
        max_length = ONE_TIME_PREKEY_LENGTH
    )

    is_used: bool = Field(default = False, nullable = False, index = True)

    def __repr__(self) -> str:
        """
        String representation of OneTimePrekey
        """
        return f"<OneTimePrekey user_id={self.user_id} key_id={self.key_id}>"