syntax = "proto3";

package forex;

option go_package = "./proto;forex";

service Forex {
	rpc Quote(QuoteRequest) returns (QuoteResponse) {}
	rpc Price(PriceRequest) returns (PriceResponse) {}
	rpc History(HistoryRequest) returns (HistoryResponse) {}
}

// Get the latest price for a given forex ticker
message PriceRequest {
	// forex symbol e.g GBPUSD
	string symbol = 1;
}

message PriceResponse {
	// the forex symbol e.g GBPUSD
	string symbol = 1;
	// the last price
	double price = 2;
}

// Get the latest quote for the forex
message QuoteRequest {
	// the forex symbol e.g GBPUSD
	string symbol = 1;
}

message QuoteResponse {
	// the forex symbol
	string symbol = 1;
	// the asking price
	double ask_price = 2;
	// the bidding price
	double bid_price = 3;
	// the UTC timestamp of the quote
	string timestamp = 4;
}


// Returns the data for the previous close
message HistoryRequest {
	// the forex symbol e.g GBPUSD
	string symbol = 1;
}

message HistoryResponse {
	// the forex symbol
	string symbol = 1;
	// the open price
	double open = 2;
	// the close price
	double close = 3;
	// the peak price
	double high = 4;
	// the low price
	double low = 5;
	// the volume
	double volume = 6;
	// the date
	string date = 7;
}