rrrr.proto

// Defines protobuf message types for RRRR
// https://developers.google.com/protocol-buffers/docs/proto

enum Mode {
    // walk is assumed, and modified by have_bicycle, have_car, and wheelchair flags
    BUS = 0;
    SUBWAY = 1;
    RAIL = 2;
    TRAM = 3;
    FERRY = 4;
    AIR = 9;
}

message Request {
    required string from_stop = 1;
    required string to_stop = 2;
    required uint64 time = 3; // epoch
    optional bool arrive_by = 4;
    optional uint32 num_itineraries = 5;
    repeated Mode modes = 8;
    //repeated uint32 modez = 8 [packed=true]; // use numerical / hierarchical system
    optional bool have_bicycle = 21;
    optional bool need_wheelchair = 22;
    optional float walk_speed = 31; // m/sec
    optional float bike_speed = 32; // m/sec
    optional uint32 max_transfers = 33;
    optional uint32 transfer_slack = 34; // seconds
    repeated string banned_routes = 41;
    repeated string banned_stops = 42;
    repeated string banned_stations = 43;
    repeated string banned_trips = 44;
}

message Response {
    repeated Itinerary itineraries = 1;
}

message Itinerary {
    repeated Leg legs = 1;
    optional float fare = 2;
}

message Leg {
    required Mode mode = 1;
    required Place from_place = 2;
    required Place to_place = 3;
    required uint64 from_time = 4; // epoch
    required uint64 to_time = 5; // epoch
}

message Place {
    optional double latitude = 1;
    optional double longitude = 2;
    optional string stop = 3;
    optional string name = 4;
}