"""Channel member join/left events."""
from datetime import datetime
from typing import Optional

from sqlmodel import Field, SQLModel


class ChannelMemberChange(SQLModel, table=True):
    __tablename__ = "channel_member_change"

    id: Optional[int] = Field(default=None, primary_key=True)
    team: str = Field(max_length=20, nullable=False)
    channel_id: str = Field(max_length=20, nullable=False)
    user_id: str = Field(max_length=20, nullable=False)
    is_joined: bool = Field(default=False, nullable=False)
    status_change_time: datetime = Field(default_factory=datetime.utcnow, nullable=False)