from odoo import models, fields, api, _
from odoo.exceptions import ValidationError

class MrpProduction(models.Model):
    _inherit = 'mrp.production'

    def _get_default_allowed_products(self):
        return self.env.user.allowed_manufacture_product_ids

    allowed_product_ids = fields.Many2many(
        'product.product', 
        compute='_compute_allowed_product_ids',
        default=_get_default_allowed_products
    )

    @api.depends_context('uid')
    def _compute_allowed_product_ids(self):
        for record in self:
            record.allowed_product_ids = self.env.user.allowed_manufacture_product_ids

    @api.constrains('product_id')
    def _check_allowed_product(self):
        for record in self:
            # Use sudo() isn't necessary for checking self.env.user, but if we were checking record.user_id it might be.
            # self.env.user is the current logged in user performing the write/create.
            user = self.env.user
            
            # Check if user has any allowed products
            # If allowed_manufacture_product_ids is empty, NO products are allowed.
            if not user.allowed_manufacture_product_ids:
                 raise ValidationError(_("You are not allowed to manufacture any products. Please contact your administrator."))
            
            if record.product_id and record.product_id not in user.allowed_manufacture_product_ids:
                raise ValidationError(_("You are not allowed to manufacture this product: %s") % record.product_id.name)