"""Admin model for Sneaky Klaus.

The Admin model represents the single administrator account
for the entire installation.
"""

from datetime import datetime

from sqlalchemy import DateTime, String
from sqlalchemy.orm import Mapped, mapped_column

from src.app import db


class Admin(db.Model):  # type: ignore[name-defined]
    """Administrator user model.

    Represents the single admin account for the entire Sneaky Klaus installation.
    Only one admin should exist per deployment.

    Attributes:
        id: Auto-increment primary key.
        email: Admin email address (unique, indexed).
        password_hash: bcrypt password hash.
        created_at: Account creation timestamp.
        updated_at: Last update timestamp.
    """

    __tablename__ = "admin"

    id: Mapped[int] = mapped_column(primary_key=True)
    email: Mapped[str] = mapped_column(
        String(255), unique=True, nullable=False, index=True
    )
    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime, nullable=False, default=datetime.utcnow
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime,
        nullable=False,
        default=datetime.utcnow,
        onupdate=datetime.utcnow,
    )

    def __repr__(self) -> str:
        """String representation of Admin instance."""
        return f"<Admin {self.email}>"