from sqlalchemy import Integer, Column, String, Boolean, ForeignKey
from sqlalchemy.orm import relationship

from models import BaseModel, barcode_template_attribute_link


class BarcodeTemplateAttribute(BaseModel):
    __tablename__ = 'barcode_template_attributes'
    id = Column(Integer, autoincrement=True, primary_key=True, index=True)
    key = Column(String, nullable=False, index=True, comment='Ключ атрибута')
    name = Column(String, nullable=False, index=True, comment='Метка атрибута')


class BarcodeTemplateAdditionalField(BaseModel):
    __tablename__ = 'barcode_template_additional_fields'
    id = Column(Integer, autoincrement=True, primary_key=True, index=True)
    name = Column(String, nullable=False)
    value = Column(String, nullable=False)

    barcode_template_id = Column(Integer, ForeignKey('barcode_templates.id'), nullable=False)
    barcode_template = relationship('BarcodeTemplate', back_populates='additional_fields')


class BarcodeTemplate(BaseModel):
    __tablename__ = 'barcode_templates'
    id = Column(Integer, autoincrement=True, primary_key=True, index=True)
    name = Column(String, nullable=False, index=True, comment='Название шаблона')
    attributes = relationship('BarcodeTemplateAttribute',
                              secondary=barcode_template_attribute_link,
                              # back_populates='barcode_template',
                              # cascade="all, delete-orphan",
                              lazy='selectin'
                              )
    additional_fields = relationship('BarcodeTemplateAdditionalField',
                                     back_populates='barcode_template',
                                     lazy='selectin'
                                     )

    is_default = Column(Boolean, nullable=False, default=False, comment='По умолчанию')

    # size
    width = Column(Integer, nullable=False, comment='Ширина в мм')
    height = Column(Integer, nullable=False, comment='Высота в мм')