from sqlalchemy import Column, Integer, String, DateTime, Boolean, ForeignKey
from sqlalchemy.sql import func
from app.core.config import Base


class APIKey(Base):
    __tablename__ = "api_keys"

    id = Column(Integer, primary_key=True, index=True)
    # The raw key is never stored — only its SHA-256 hash. `key_prefix` holds
    # the first few chars for human-readable display/masking in listings.
    key_hash = Column(String(64), unique=True, nullable=False, index=True)
    key_prefix = Column(String(16), nullable=True)
    name = Column(String(100), nullable=False)  # e.g. "agent-zhi", "agent-lyn"
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    last_used_at = Column(DateTime(timezone=True), nullable=True)