Criptomart/red-supermercados-coop#4 add pos_order_backend_receipt

pos_order_backend_receipt/models/pos_order.py

@@ -0,0 +1,83 @@
+from odoo import models, fields, api, _
+from odoo.exceptions import UserError
+import base64
+from types import SimpleNamespace
+from odoo.tools import formatLang
+
+
+class PosOrder(models.Model):
+    _inherit = "pos.order"
+
+    def action_print_backend_ticket(self):
+        self.ensure_one()
+        if self.state not in ("paid", "done", "invoiced"):
+            raise UserError(
+                _(
+                    "Solo se puede imprimir el ticket cuando el pedido está pagado o cerrado."
+                )
+            )
+        return self.env.ref(
+            "pos_order_backend_receipt.action_report_pos_order_ticket"
+        ).report_action(self)
+
+    # ----------------- Helpers Backend Ticket -----------------
+    def _get_backend_tax_breakdown(self):
+        """Return list of dicts with tax_rate, base, amount for legal breakdown.
+
+        Group by tax (percentage). Only sales taxes (positive or negative based on sign).
+        """
+        self.ensure_one()
+        breakdown = []
+        Tax = self.env["account.tax"]
+        currency = self.pricelist_id.currency_id or self.company_id.currency_id
+        # aggregate via line taxes after fiscal position
+        tax_map = {}
+        for line in self.lines:
+            # price_subtotal (sin impuestos), price_subtotal_incl (con impuestos)
+            base = line.price_subtotal
+            tax_amount_line = line.price_subtotal_incl - line.price_subtotal
+            # Derivar tipo (promedio) desde los impuestos aplicados
+            for tax in line.tax_ids_after_fiscal_position:
+                key = tax.id
+                entry = tax_map.setdefault(
+                    key,
+                    {
+                        "tax": tax,
+                        "base": 0.0,
+                        "amount": 0.0,
+                    },
+                )
+                # prorratear base / importe cuando múltiples impuestos
+                # simplificación: si hay varios impuestos no compuestos, se reparte proporcional a sus montos teóricos
+                if line.tax_ids_after_fiscal_position:
+                    # compute_all para repartir preciso
+                    taxes_res = tax.compute_all(
+                        line.price_unit * (1 - (line.discount or 0.0) / 100.0),
+                        currency,
+                        line.qty,
+                        product=line.product_id,
+                        partner=self.partner_id,
+                    )
+                    # encontrar este tax
+                    for tline in taxes_res["taxes"]:
+                        if tline["id"] == tax.id:
+                            entry["amount"] += tline["amount"]
+                            # base para ese impuesto específico
+                            entry["base"] += tline["base"]
+                else:
+                    entry["base"] += base
+                    entry["amount"] += tax_amount_line
+        # formatear
+        for v in tax_map.values():
+            tax = v["tax"]
+            rate = tax.amount if tax.amount_type == "percent" else 0.0
+            breakdown.append(
+                {
+                    "rate": rate,
+                    "base": currency.round(v["base"]),
+                    "amount": currency.round(v["amount"]),
+                }
+            )
+        # ordenar por tasa
+        breakdown.sort(key=lambda x: x["rate"])
+        return breakdown