from sqlalchemy import Table, Column, Integer, ForeignKey
from sqlalchemy.orm import relationship

from models.base import metadata, BaseModel


class DealService(BaseModel):
    __tablename__ = 'deal_services'
    deal_id = Column(Integer, ForeignKey('deals.id'),
                     nullable=False,
                     comment='ID Сделки',
                     primary_key=True)
    deal = relationship('Deal', back_populates='services')

    service_id = Column(Integer, ForeignKey('services.id'), nullable=False, comment='ID Услуги', primary_key=True)
    service = relationship('Service')

    quantity = Column(Integer, nullable=False, comment='Кол-во услуги')


class DealProduct(BaseModel):
    __tablename__ = 'deal_products'
    deal_id = Column(Integer,
                     ForeignKey('deals.id'),
                     nullable=False,
                     comment='ID Сделки',
                     primary_key=True)
    deal = relationship('Deal', back_populates='products')

    product_id = Column(Integer, ForeignKey('products.id'), nullable=False, comment='ID Продукта', primary_key=True)
    product = relationship('Product')

    quantity = Column(Integer, nullable=False, comment='Кол-во продукта')


class BarcodeTemplateAttributeLink(BaseModel):
    __tablename__ = 'barcode_template_attributes_links'
    barcode_template_id = Column(Integer,
                                 ForeignKey('barcode_templates.id'),
                                 nullable=False,
                                 comment='ID Шаблона ШК',
                                 primary_key=True)
    barcode_template = relationship('BarcodeTemplate', back_populates='attributes')

    attribute_id = Column(Integer,
                          ForeignKey('barcode_template_attributes.id'),
                          nullable=False,
                          comment='ID Атрибута',
                          primary_key=True)
    attribute = relationship('BarcodeTemplateAttribute')