# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import models, fields, _
from odoo.tools.safe_eval import safe_eval
from odoo.exceptions import UserError


class AccountTaxPython(models.Model):
    _inherit = "account.tax"

    amount_type = fields.Selection(selection_add=[
        ('code', 'Python Code')
    ], ondelete={'code': lambda recs: recs.write({'amount_type': 'percent', 'active': False})})

    python_compute = fields.Text(string='Python Code', default="result = price_unit * 0.10",
        help="Compute the amount of the tax by setting the variable 'result'.\n\n"
            ":param base_amount: float, actual amount on which the tax is applied\n"
            ":param price_unit: float\n"
            ":param quantity: float\n"
            ":param company: res.company recordset singleton\n"
            ":param product: product.product recordset singleton or None\n"
            ":param partner: res.partner recordset singleton or None")
    python_applicable = fields.Text(string='Applicable Code', default="result = True",
        help="Determine if the tax will be applied by setting the variable 'result' to True or False.\n\n"
            ":param price_unit: float\n"
            ":param quantity: float\n"
            ":param company: res.company recordset singleton\n"
            ":param product: product.product recordset singleton or None\n"
            ":param partner: res.partner recordset singleton or None")

    def _compute_amount(self, base_amount, price_unit, quantity=1.0, product=None, partner=None, fixed_multiplicator=1):
        self.ensure_one()
        if product and product._name == 'product.template':
            product = product.product_variant_id
        if self.amount_type == 'code':
            company = self.env.company
            localdict = {'base_amount': base_amount, 'price_unit':price_unit, 'quantity': quantity, 'product':product, 'partner':partner, 'company': company}
            try:
                safe_eval(self.python_compute, localdict, mode="exec", nocopy=True)
            except Exception as e:
                raise UserError(_("You entered invalid code %r in %r taxes\n\nError : %s") % (self.python_compute, self.name, e)) from e
            return localdict['result']
        return super(AccountTaxPython, self)._compute_amount(base_amount, price_unit, quantity, product, partner, fixed_multiplicator)

    def compute_all(self, price_unit, currency=None, quantity=1.0, product=None, partner=None, is_refund=False, handle_price_include=True, include_caba_tags=False, fixed_multiplicator=1):
        taxes = self.filtered(lambda r: r.amount_type != 'code')
        company = self.env.company
        if product and product._name == 'product.template':
            product = product.product_variant_id
        for tax in self.filtered(lambda r: r.amount_type == 'code'):
            localdict = self._context.get('tax_computation_context', {})
            localdict.update({'price_unit': price_unit, 'quantity': quantity, 'product': product, 'partner': partner, 'company': company})
            try:
                safe_eval(tax.python_applicable, localdict, mode="exec", nocopy=True)
            except Exception as e:
                raise UserError(_("You entered invalid code %r in %r taxes\n\nError : %s") % (tax.python_applicable, tax.name, e)) from e
            if localdict.get('result', False):
                taxes += tax
        return super(AccountTaxPython, taxes).compute_all(price_unit, currency, quantity, product, partner, is_refund=is_refund, handle_price_include=handle_price_include, include_caba_tags=include_caba_tags, fixed_multiplicator=fixed_multiplicator)


class AccountTaxTemplatePython(models.Model):
    _inherit = 'account.tax.template'

    amount_type = fields.Selection(selection_add=[
        ('code', 'Python Code')
    ], ondelete={'code': 'cascade'})

    python_compute = fields.Text(string='Python Code', default="result = price_unit * 0.10",
        help="Compute the amount of the tax by setting the variable 'result'.\n\n"
            ":param base_amount: float, actual amount on which the tax is applied\n"
            ":param price_unit: float\n"
            ":param quantity: float\n"
            ":param product: product.product recordset singleton or None\n"
            ":param partner: res.partner recordset singleton or None")
    python_applicable = fields.Text(string='Applicable Code', default="result = True",
        help="Determine if the tax will be applied by setting the variable 'result' to True or False.\n\n"
            ":param price_unit: float\n"
            ":param quantity: float\n"
            ":param product: product.product recordset singleton or None\n"
            ":param partner: res.partner recordset singleton or None")

    def _get_tax_vals(self, company, tax_template_to_tax):
        """ This method generates a dictionnary of all the values for the tax that will be created.
        """
        self.ensure_one()
        res = super(AccountTaxTemplatePython, self)._get_tax_vals(company, tax_template_to_tax)
        res['python_compute'] = self.python_compute
        res['python_applicable'] = self.python_applicable
        return res
