from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, Index, Integer, Text
from sqlalchemy.orm import Mapped, mapped_column

from fabledassistant.models import Base
from fabledassistant.models.base import CreatedAtMixin


class ApiKey(Base, CreatedAtMixin):
    __tablename__ = "api_keys"

    id: Mapped[int] = mapped_column(primary_key=True)
    user_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False
    )
    name: Mapped[str] = mapped_column(Text, nullable=False)
    key_hash: Mapped[str] = mapped_column(Text, nullable=False, unique=True)
    key_prefix: Mapped[str] = mapped_column(Text, nullable=False)
    scope: Mapped[str] = mapped_column(Text, nullable=False)  # "read" or "write"
    last_used_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    revoked_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )

    __table_args__ = (
        Index("ix_api_keys_user_id", "user_id"),
        Index("ix_api_keys_key_hash", "key_hash"),
    )

    def to_dict(self) -> dict:
        return {
            "id": self.id,
            "name": self.name,
            "key_prefix": self.key_prefix,
            "scope": self.scope,
            "last_used_at": self.last_used_at.isoformat() if self.last_used_at else None,
            "created_at": self.created_at.isoformat(),
            "revoked_at": self.revoked_at.isoformat() if self.revoked_at else None,
        }