from odoo import models, api, fields
from odoo.exceptions import AccessError, UserError, ValidationError
from datetime import timedelta, date, datetime
import logging

_logger = logging.getLogger(__name__)

class BarcodingProduct(models.Model):
    _name = "barcoding.product"
    _description = "Barcoding Product"

    barcoding_product_line = fields.One2many('barcoding.product.line', 'barcoding_product_id', string='Barcoding Product Lines', auto_join=True)
    product_id = fields.Many2one('product.product', string="Product", tracking=3)
    quantity = fields.Float(string="Quantity", tracking=3)
    type = fields.Selection([('print', 'Print Barcode'), ('barcoding', 'Add Barcode To Product')], string='Type', default='print')
    barcode = fields.Char(string="Barcode")

    @api.constrains('barcode')
    def _send_barcode_to_product(self):
        for record in self:
            if record.barcode and not record.product_id.barcode:
                record.product_id.barcode = record.barcode
    
    @api.onchange('product_id', 'quantity')
    def _onchange_product_or_quantity(self):
        """Update barcoding_product_line based on product_id and quantity"""
        if self.product_id and self.quantity > 0:
            # Clear existing lines
            self.barcoding_product_line = [(5, 0, 0)]

            # Add a new line with the current product and quantity
            self.barcoding_product_line = [(0, 0, {
                'product_id': self.product_id.id,
                'barcoding_product_id': self.id,
            }) for _ in range(int(self.quantity))]
    
    
class BarcodingProductLine(models.Model):
    _name = 'barcoding.product.line'
    _description = 'Barcoding Product Line'
    _order = 'barcoding_product_id, id'

    barcoding_product_id = fields.Many2one('barcoding.product', string='Barcoding Product Ref', required=True, ondelete='cascade', index=True, copy=False)
    product_id = fields.Many2one('product.product', string="Product")
    qr_code_variant = fields.Binary("QR Code Variant", related='product_id.qr_code_variant')