syntax = "proto3";
package komp_ac.currency_conversion;

service CurrencyConversion {
  rpc ConvertCurrency(ConvertCurrencyRequest) returns (ConvertCurrencyResponse);
  rpc ResolveRate(ResolveRateRequest) returns (ResolvedFxRate);
  rpc ListRequiredCurrencies(ListRequiredCurrenciesRequest)
      returns (ListRequiredCurrenciesResponse);
}

message ConvertCurrencyRequest {
  string amount = 1;
  string source_currency = 2;
  string target_currency = 3;
  string source = 4;
  string as_of_date = 5;
}

message ResolveRateRequest {
  string source_currency = 1;
  string target_currency = 2;
  string source = 3;
  string as_of_date = 4;
}

message FxRateComponent {
  string currency = 1;
  string units_per_base = 2;
}

message ResolvedFxRate {
  string source_currency = 1;
  string target_currency = 2;
  string rate = 3;
  string effective_date = 4;
  string source = 5;
  int64 rate_set_id = 6;
  int32 revision = 7;
  string base_currency = 8;
  repeated FxRateComponent components = 9;
}

message ConvertCurrencyResponse {
  string amount = 1;
  string currency = 2;
  ResolvedFxRate resolved_rate = 3;
}

message ListRequiredCurrenciesRequest {}

message ListRequiredCurrenciesResponse {
  repeated string currencies = 1;
}