service backend

api/proto/common/money/v1/money.proto

@@ -0,0 +1,23 @@
+syntax = "proto3";
+package common.money.v1;
+option go_package = "github.com/tech/sendico/pkg/proto/common/money/v1;moneyv1";
+
+message Decimal { string value = 1; } // exact decimal as string
+
+message Money {
+  string amount   = 1; // decimal string
+  string currency = 2; // ISO 4217 or your code set
+}
+
+enum RoundingMode {
+  ROUNDING_MODE_UNSPECIFIED = 0;
+  ROUND_HALF_EVEN = 1;
+  ROUND_HALF_UP   = 2;
+  ROUND_DOWN      = 3;
+}
+
+message CurrencyMeta {
+  string code = 1;
+  uint32 decimals = 2;
+  RoundingMode rounding = 3;
+}