from .base import AlchemyBase
from sqlalchemy import Column, BigInteger, Integer, String, ForeignKey, DateTime, JSON, Boolean
from datetime import datetime


class BlockchainTask:
    __tablename__ = 'blockchain_tasks'

    id = Column(Integer, autoincrement=True, primary_key=True)
    
    destination = Column(String(1024), nullable=False)
    amount = Column(String(256), nullable=False)
    payload = Column(String(4096), nullable=False)

    epoch = Column(Integer, nullable=True)
    seqno = Column(Integer, nullable=True)

    created = Column(DateTime, nullable=False, default=datetime.now)
    updated = Column(DateTime, nullable=False, default=datetime.now)

    user_id = Column(Integer, ForeignKey('users.id'), nullable=True)
    meta = Column(JSON, nullable=False, default={})
    status = Column(String(256), nullable=False)

    transaction_hash = Column(String(1024), nullable=True)
    transaction_lt = Column(String(1024), nullable=True)