from app.extensions import db
from datetime import datetime, timezone

from app.utils.logger import logger
from sqlalchemy import and_, or_, not_

class Transaction(db.Model):
    __tablename__ = "transactions"

    id = db.Column(
        db.Integer,
        primary_key=True,
        autoincrement=True,
    )
    transaction_id = db.Column(db.String(50), nullable=False)
    account_id = db.Column(db.String(50), nullable=True)
    customer_id = db.Column(db.String(50), nullable=True)
    type = db.Column(db.String(50), nullable=False)
    channel = db.Column(db.String(50), nullable=False)
    phone_number = db.Column(db.String(50), nullable=True)
    created_at = db.Column(db.DateTime, default=datetime.now(timezone.utc))
    updated_at = db.Column(db.DateTime, default=datetime.now(timezone.utc), onupdate=datetime.now(timezone.utc))

    @classmethod
    def create_transaction(cls, transaction_id, account_id, customer_id, type, channel):
        logger.error(f"**Setting Transaction {transaction_id}  for Type {type}")
        if cls.query.filter( and_( cls.transaction_id ==transaction_id, cls.type==type) ).first():
            logger.error(f"Transaction already exists for {type}")
            return '' # dont raise - do not crash beacause of this

        transaction = cls(
            transaction_id = transaction_id,
            customer_id = customer_id,
            account_id = account_id,
            type = type,
            channel = channel,
            created_at=datetime.now(timezone.utc),
            updated_at=datetime.now(timezone.utc)
        )

        try:
            db.session.add(transaction)
            db.session.commit()
        except IntegrityError as err:
            raise ValueError(f"Database integrity error: {err}")

        return transaction

    def __repr__(self):
        return f'<Transaction {self.id}>'

    def to_dict(self):
        """
        Convert the Transaction object to a dictionary format for JSON serialization.
        """
        return {
            'id': self.id,
            'transaction_id': self.transaction_id,
            'account_id': self.account_id,
            'customer_id': self.customer_id,
            'phone_number':self.phone_number,
            'type': self.type,
            'channel': self.channel,
        }

    @classmethod
    def get_transaction_by_transaction_id(cls, transaction_id):
        return cls.query.filter_by(transaction_id=transaction_id).first()