#pragma once

#include <string>
#include <vector>

// One line of the bridge protocol: a verb and its fields, separated by tabs.
// Nonemm.Digital/BridgeLine.cs is the other end of the same format.
namespace protocol {

struct Line {
    std::string verb;
    std::vector<std::string> fields;

    // Empty when the field is not there, which keeps a short line from being an
    // error on either side.
    std::string field(size_t index) const;
    long number(size_t index) const;
};

Line read(const std::string& line);

// Writes one line to standard output and flushes it. Safe to call from any
// thread.
void write(const std::string& verb, const std::vector<std::string>& fields = {});
void write(const std::string& verb, long value);

}  // namespace protocol