feat: adiciona modulo de desconto e taxa na loja

.editorconfig

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+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.php]
+charset = utf-8
+indent_style = space
+indent_size = 4
+
+[*.twig]
+indent_size = 2
+
+# 4 space indentation
+[*.json]
+indent_style = space
+indent_size = 4
+
+# Tab indentation (no size specified)
+[Makefile]
+indent_style = tab
+
+# Matches the exact files either package.json or .travis.yml
+[{package.json,.travis.yml}]
+indent_style = space
+indent_size = 2
+

upload/catalog/language/en-gb/extension/total/pagseguro_discount.php

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+<?php
+
+// Heading
+$_['heading_title'] = 'PagSeguro Desconto';

upload/catalog/language/en-gb/extension/total/pagseguro_fee.php

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+<?php
+
+// Heading
+$_['heading_title'] = 'PagSeguro Taxa';

upload/catalog/model/extension/total/pagseguro_discount.php

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+<?php
+
+class ModelExtensionTotalPagSeguroDiscount extends Model
+{
+    const EXTENSION_PAYMENT_PREFIX = 'payment_pagseguro_';
+    const EXTENSION_PAGSEGURO_BOLETO = self::EXTENSION_PAYMENT_PREFIX . 'boleto';
+    const EXTENSION_PAGSEGURO_CREDIT = self::EXTENSION_PAYMENT_PREFIX . 'credit';
+    const EXTENSION_PAGSEGURO_DEBIT = self::EXTENSION_PAYMENT_PREFIX . 'debit';
+
+    public function getTotal($total) {
+        $status_key = self::EXTENSION_PAYMENT_PREFIX . 'status';
+
+        if (
+            isset($this->session->data['payment_method']) &&
+            $this->config->get($status_key)
+        ) {
+            $this->load->language('extension/total/pagseguro_discount', 'pg-discount');
+
+            $discount_value = $this->getDiscountValue();
+
+            if ($discount_value > 0) {
+                $discount_total = ($discount_value / 100) * $this->cart->getSubTotal();
+
+                $language = $this->language->get('pg-discount');
+
+                $total['totals'][] = array(
+                    'code'       => 'pagseguro_discount',
+                    'title'      => $language->get('heading_title'),
+                    'value'      => -$discount_total,
+                    'sort_order' => $this->config->get('total_sub_total_sort_order') + 1
+                );
+
+                $total['total'] -= $discount_total;
+            }
+        }
+    }
+
+    /**
+     * Captura o valor do desconto
+     *
+     * @return float
+     */
+    private function getDiscountValue(): float
+    {
+        switch ($this->session->data['payment_method']) {
+            case self::EXTENSION_PAGSEGURO_BOLETO:
+                return floatval($this->config->get(self::EXTENSION_PAYMENT_PREFIX . 'discount_boleto'));
+            break;
+            case self::EXTENSION_PAGSEGURO_CREDIT:
+                return floatval($this->config->get(self::EXTENSION_PAYMENT_PREFIX . 'discount_credit'));
+            break;
+            case self::EXTENSION_PAGSEGURO_DEBIT:
+                return floatval($this->config->get(self::EXTENSION_PAYMENT_PREFIX . 'discount_debit'));
+            default:
+                return 0;
+        }
+    }
+}

upload/catalog/model/extension/total/pagseguro_fee.php

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+<?php
+
+class ModelExtensionTotalPagSeguroFee extends Model
+{
+    const EXTENSION_PAYMENT_PREFIX = 'payment_pagseguro_';
+    const EXTENSION_PAGSEGURO_BOLETO = self::EXTENSION_PAYMENT_PREFIX . 'boleto';
+    const EXTENSION_PAGSEGURO_CREDIT = self::EXTENSION_PAYMENT_PREFIX . 'credit';
+    const EXTENSION_PAGSEGURO_DEBIT = self::EXTENSION_PAYMENT_PREFIX . 'debit';
+
+    public function getTotal($total) {
+        $status_key = self::EXTENSION_PAYMENT_PREFIX . 'status';
+
+        if (
+            isset($this->session->data['payment_method']) &&
+            $this->config->get($status_key)
+        ) {
+            $this->load->language('extension/total/pagseguro_fee', 'pg-fee');
+
+            $fee_value = $this->getFeeValue();
+
+            if ($fee_value > 0) {
+                $fee_total = ($fee_value / 100) * $this->cart->getSubTotal();
+
+                $language = $this->language->get('pg-fee');
+
+                $total['totals'][] = array(
+                    'code'       => 'pagseguro_fee',
+                    'title'      => $language->get('heading_title'),
+                    'value'      => $fee_total,
+                    'sort_order' => $this->config->get('total_sub_total_sort_order') + 1
+                );
+
+                $total['total'] += $fee_total;
+            }
+        }
+    }
+
+    /**
+     * Captura o valor da taxa
+     *
+     * @return float
+     */
+    private function getFeeValue(): float
+    {
+        switch ($this->session->data['payment_method']) {
+            case self::EXTENSION_PAGSEGURO_BOLETO:
+                return floatval($this->config->get(self::EXTENSION_PAYMENT_PREFIX . 'fee_boleto'));
+            break;
+            case self::EXTENSION_PAGSEGURO_CREDIT:
+                return floatval($this->config->get(self::EXTENSION_PAYMENT_PREFIX . 'fee_credit'));
+            break;
+            case self::EXTENSION_PAGSEGURO_DEBIT:
+                return floatval($this->config->get(self::EXTENSION_PAYMENT_PREFIX . 'fee_debit'));
+            default:
+                return 0;
+        }
+    }
+}