message.hpp

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#pragma once
#include <memory>
#include <iostream>
#include "user.hpp"

namespace messaging {
  enum class MessageType {
    Text,                                                           
    Action                                                          
  };

  class Message {
  public:
    const uint16_t _originId;                                       
    Message(const uint16_t id) : _originId(id) {};
    virtual MessageType type() const = 0;
  };

  typedef std::shared_ptr<const Message> message_ptr;

  class TextMessage: public Message {
    const std::string _data;                                        
    const std::shared_ptr<const messaging::User> _user;             
  public:
    TextMessage(const uint16_t origin, std::shared_ptr<const messaging::User>&& user, const std::string& data) :
      Message(origin),
      _data(data),
      _user(std::move(user)) {};

    const std::string& data() const { return _data; };
    const std::shared_ptr<const messaging::User> user() const { return _user; };

    MessageType type() const override { return MessageType::Text; };

    static auto fromMessage(const message_ptr msg) {
      return static_cast<typename std::shared_ptr<const TextMessage>::element_type *>(msg.get());
    }
  };

  class ActionMessage: public Message {
    const std::string _data;                                        
    const std::shared_ptr<const messaging::User> _user;             
  public:
    ActionMessage(const uint16_t origin, std::shared_ptr<const messaging::User>&& user, const std::string& data) :
      Message(origin),
      _data(data),
      _user(std::move(user)) {};

    const std::string& data() const { return _data; };
    const std::shared_ptr<const messaging::User> user() const { return _user; };

    MessageType type() const override { return MessageType::Action; };

    static auto fromMessage(const message_ptr msg) {
      return static_cast<typename std::shared_ptr<const ActionMessage>::element_type *>(msg.get());
    }
  };
}