import uuid
from datetime import datetime

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

from app.database import Base


def generate_uuid() -> str:
    return str(uuid.uuid4())


class Agent(Base):
    __tablename__ = "agents"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=generate_uuid)
    username: Mapped[str] = mapped_column(String(255), unique=True, nullable=False)
    password_hash: Mapped[str] = mapped_column(Text, nullable=False)
    role: Mapped[str] = mapped_column(String(20), nullable=False, default="agent")
    is_deleted: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
    deleted_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    deleted_by: Mapped[str | None] = mapped_column(String(36), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)