from datetime import datetime, timezone, timedelta
from app.extensions import db
from sqlalchemy.sql import func
from sqlalchemy.exc import IntegrityError
import uuid
from app.utils.logger import logger


class Signup(db.Model):
    __tablename__ = 'signup'

    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    uid = db.Column(db.String(150), nullable=False)
    email = db.Column(db.String(100), nullable=False)
    firstname = db.Column(db.String(25), nullable=False)
    lastname = db.Column(db.String(25), nullable=True)
    loc = db.Column(db.String(20), nullable=True)
    status = db.Column(db.Integer, default=1)
    added = db.Column(db.DateTime(timezone=False), server_default=func.now())
    updated = db.Column(db.DateTime(timezone=False), server_default=func.now(), onupdate=func.now())



    # "account_id": self.account_id,
    def to_dict(self):
        return {
            "id": self.id,
            "uid": str(self.uid),
            "loc": self.loc,
            "status": self.status,
            "added": self.added.isoformat() if self.added else None,
            "updated": self.updated.isoformat() if self.updated else None,
            "email": self.email,
            "firstname": self.firstname,
            "lastname": self.lastname,
        }

    def __repr__(self):
        return f'<Signup {self.id} - {self.uid}>'


    @classmethod
    def add_signup(cls, firstname, lastname, email):

        # Save the response
        signup_data = cls(
            uid=str(uuid.uuid4()),
            firstname=firstname,
            lastname=lastname,
            email=email,
            added=datetime.now(timezone.utc),
            updated=datetime.now(timezone.utc)
        )

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


    @classmethod
    def get_all_start_signup(cls, email=None, firstname=None, lastname=None, page=1, limit=20):

        query = cls.query
        logger.info(f"Get all customer back")

        if firstname:
            query = query.filter(cls.firstname == firstname)

        if lastname:
            query = query.filter(cls.lastname == lastname)

        if email:
            query = query.filter(cls.email == email)

        # Order by created_at descending (newest first)
        query = query.order_by(cls.added.desc())

        # Get total count before pagination
        total_count = query.count()

        # Apply pagination
        offset = (page - 1) * limit
        query = query.limit(limit).offset(offset)

        return query.all(), total_count