map_command_server.hpp

// SPDX-FileCopyrightText: 2026 Mark G. Russell
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <optional>
#include <string>
 
#include <zmq.hpp>
 
struct MapCommand {
    std::string command;
    std::string operationId;
    double latitude = 0.0;
    double longitude = 0.0;
    double zoom = 0.0;
    double bearing = 0.0;
    double pitch = 0.0;
    double south = 0.0;
    double west = 0.0;
    double north = 0.0;
    double east = 0.0;
    double padding = 40.0;
    double opacity = 0.65;
    double rightPx = 0.0;
    double upPx = 0.0;
    std::string geojson;
    std::string category;
    std::string tileUrl;
    long long frameTime = 0;
    long long requestId = 0;
    int maxZoom = 22;
    bool enabled = false;
};
 
class MapCommandServer {
public:
    explicit MapCommandServer(std::string endpoint = "tcp://127.0.0.1:5557");
    ~MapCommandServer() = default;
    MapCommandServer(const MapCommandServer&) = delete;
    MapCommandServer& operator=(const MapCommandServer&) = delete;
    std::optional<MapCommand> poll();
 
private:
    std::optional<MapCommand> parseCommand(const std::string& payload) const;
    std::string endpoint;
    zmq::context_t context{1};
    zmq::socket_t socket{context, zmq::socket_type::sub};
};