service backend

api/proto/common/accounting/v1/posting.proto

@@ -0,0 +1,19 @@
+syntax = "proto3";
+package common.accounting.v1;
+option go_package = "github.com/tech/sendico/pkg/proto/common/accounting/v1;accountingv1";
+
+// Direction on a line; safe to share.
+enum EntrySide {
+  ENTRY_SIDE_UNSPECIFIED = 0;
+  ENTRY_SIDE_DEBIT       = 1;
+  ENTRY_SIDE_CREDIT      = 2;
+}
+
+// Generic line semantics used across services for derived lines.
+enum PostingLineType {
+  POSTING_LINE_TYPE_UNSPECIFIED = 0;
+  POSTING_LINE_FEE              = 1;
+  POSTING_LINE_TAX              = 2;
+  POSTING_LINE_SPREAD           = 3;
+  POSTING_LINE_REVERSAL         = 4;
+}

api/proto/common/fx/v1/fx.proto

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+syntax = "proto3";
+package common.fx.v1;
+option go_package = "github.com/tech/sendico/pkg/proto/common/fx/v1;fxv1";
+
+message CurrencyPair {
+  string base  = 1;
+  string quote = 2;
+}
+
+enum Side {
+  SIDE_UNSPECIFIED        = 0;
+  BUY_BASE_SELL_QUOTE     = 1;
+  SELL_BASE_BUY_QUOTE     = 2;
+}

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;
+}

api/proto/common/pagination/v1/cursor.proto

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+syntax = "proto3";
+package common.pagination.v1;
+option go_package = "github.com/tech/sendico/pkg/proto/common/pagination/v1;paginationv1";
+
+message CursorPageRequest {
+  string cursor = 1; // opaque
+  int32  limit  = 2; // page size
+}
+
+message CursorPageResponse {
+  string next_cursor = 1; // opaque
+}

api/proto/common/trace/v1/trace.proto

@@ -0,0 +1,9 @@
+syntax = "proto3";
+package common.trace.v1;
+option go_package = "github.com/tech/sendico/pkg/proto/common/trace/v1;tracev1";
+
+message TraceContext {
+  string request_ref     = 1;
+  string idempotency_key = 2;
+  string trace_ref       = 3;
+}