"""Authentication models: User, UserCredential."""

import uuid

from sqlalchemy import ForeignKey, Integer, LargeBinary, String
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from shared.models.base import Base, TimestampMixin


class User(TimestampMixin, Base):
    __tablename__ = "users"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    username: Mapped[str] = mapped_column(String(100), unique=True, nullable=False)
    display_name: Mapped[str | None] = mapped_column(String(255), nullable=True)

    # Relationships
    credentials: Mapped[list["UserCredential"]] = relationship(back_populates="user")


class UserCredential(TimestampMixin, Base):
    __tablename__ = "user_credentials"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    user_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("users.id"), nullable=False
    )
    credential_id: Mapped[str] = mapped_column(String(512), unique=True, nullable=False)
    public_key: Mapped[bytes] = mapped_column(LargeBinary, nullable=False)
    sign_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0)

    # Relationships
    user: Mapped[User] = relationship(back_populates="credentials")