from datetime import datetime

from .database import db
from .user import User


class OrderItem(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    order_id = db.Column(db.Integer, db.ForeignKey('order.id'), nullable=False)
    product_id = db.Column(
        db.Integer, db.ForeignKey('product.id'),
        nullable=True)  # TODO make false after init migration
    paid = db.Column(db.Boolean, default=False,
                     nullable=True)  # TODO make false after init migration
    extra = db.Column(db.String(254), nullable=True)
    name = db.Column(db.String(120))

    def configure(self, user, order, product):
        self.user = user
        self.order = order
        self.product = product

    def get_name(self):
        if self.user_id is not None and self.user_id > 0:
            return self.user.username
        return self.name

    def __repr__(self):
        product_name = None
        if self.product:
            product_name = self.product.name
        return 'Order %d: %s wants %s' % (self.order_id or 0, self.get_name(),
                                          product_name or 'None')

    def can_delete(self, order_id, user_id, name):
        if int(self.order_id) != int(order_id):
            return False
        if self.order.stoptime and self.order.stoptime < datetime.now():
            return False
        if self.user is not None and self.user_id == user_id:
            return True
        if user_id is None:
            return False
        user = User.query.filter(User.id == user_id).first()
        if user and user.is_admin():
            return True
        return False