#pragma once

#include "screencast/network/error.h"

#include <cstdint>
#include <functional>
#include <memory>
#include <string>

namespace sc {

struct DiscoveredPeer {
    std::string service_name;
    std::string host;
    uint16_t signaling_port = 0;
};

class DiscoveryService {
  public:
    using PeerCallback = std::function<void(const DiscoveredPeer&)>;

    virtual ~DiscoveryService() = default;

    // Announce this peer on the LAN.
    virtual bool announce(const std::string& service_name, uint16_t signaling_port) = 0;

    // Browse for peers; callback is invoked for each newly found service.
    virtual bool browse(PeerCallback on_peer) = 0;

    virtual void stop() = 0;

    // Diagnostic message from the last failure (empty if none).
    virtual std::string last_error() const = 0;
};

class DiscoveryFactory {
  public:
    static NetworkResult<std::unique_ptr<DiscoveryService>> create_avahi();
};

} // namespace sc