participant.h

/*
 * Copyright 2025 LiveKit
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an “AS IS” BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include <cstdint>
#include <memory>
#include <string>
#include <unordered_map>
 
#include "livekit/ffi_handle.h"
#include "livekit/room_delegate.h"
 
namespace livekit {
 
enum class ParticipantKind { Standard = 0, Ingress, Egress, Sip, Agent };
 
class Participant {
public:
  Participant(FfiHandle handle, std::string sid, std::string name,
              std::string identity, std::string metadata,
              std::unordered_map<std::string, std::string> attributes,
              ParticipantKind kind, DisconnectReason reason)
      : handle_(std::move(handle)), sid_(std::move(sid)),
        name_(std::move(name)), identity_(std::move(identity)),
        metadata_(std::move(metadata)), attributes_(std::move(attributes)),
        kind_(kind), reason_(reason) {}
  virtual ~Participant() = default;
 
  // Plain getters (caller ensures threading)
  const std::string &sid() const noexcept { return sid_; }
  const std::string &name() const noexcept { return name_; }
  const std::string &identity() const noexcept { return identity_; }
  const std::string &metadata() const noexcept { return metadata_; }
  const std::unordered_map<std::string, std::string> &
  attributes() const noexcept {
    return attributes_;
  }
  ParticipantKind kind() const noexcept { return kind_; }
  DisconnectReason disconnectReason() const noexcept { return reason_; }
 
  uintptr_t ffiHandleId() const noexcept { return handle_.get(); }
 
  // Setters (caller ensures threading)
  void set_name(std::string name) noexcept { name_ = std::move(name); }
  void set_metadata(std::string metadata) noexcept {
    metadata_ = std::move(metadata);
  }
  void
  set_attributes(std::unordered_map<std::string, std::string> attrs) noexcept {
    attributes_ = std::move(attrs);
  }
  void set_attribute(const std::string &key, const std::string &value) {
    attributes_[key] = value;
  }
  void remove_attribute(const std::string &key) { attributes_.erase(key); }
  void set_kind(ParticipantKind kind) noexcept { kind_ = kind; }
  void set_disconnect_reason(DisconnectReason reason) noexcept {
    reason_ = reason;
  }
 
protected:
  virtual std::shared_ptr<TrackPublication>
  findTrackPublication(const std::string &sid) const = 0;
  friend class Room;
 
private:
  FfiHandle handle_;
  std::string sid_, name_, identity_, metadata_;
  std::unordered_map<std::string, std::string> attributes_;
  ParticipantKind kind_;
  DisconnectReason reason_;
};
 
} // namespace livekit