#pragma once
#include <string>
#include <cstddef> 
#include <odb/nullable.hxx>
#include <odb/core.hxx>
#include "chat_session_member.hxx"

namespace bite_im {

enum class ChatSessionType {
    SINGLE = 1,
    GROUP = 2
};

#pragma db object table("chat_session")
class ChatSession {
    public:
        ChatSession(){}
        ChatSession(const std::string &ssid, 
            const std::string &ssname, const ChatSessionType sstype):
            _chat_session_id(ssid),  
            _chat_session_name(ssname), 
            _chat_session_type(sstype){}
            
        std::string chat_session_id() const { return _chat_session_id; }
        void chat_session_id(std::string &ssid)  { _chat_session_id = ssid; }

        std::string chat_session_name() const { return _chat_session_name; }
        void chat_session_name(std::string &ssname)  { _chat_session_name = ssname; }
        
        ChatSessionType chat_session_type() const { return _chat_session_type; }
        void chat_session_type(ChatSessionType val) { _chat_session_type = val; }
    private:
        friend class odb::access;
        #pragma db id auto
        unsigned long _id;
        #pragma db type("varchar(64)") index unique
        std::string _chat_session_id;
        #pragma db type("varchar(64)")
        std::string _chat_session_name;
        #pragma db type("tinyint")
        ChatSessionType _chat_session_type; //1-单聊； 2-群聊
};

// 这里条件必须是指定条件：  css::chat_session_type==1 && csm1.user_id=uid && csm2.user_id != csm1.user_id
#pragma db view object(ChatSession = css)\
                object(ChatSessionMember = csm1 : css::_chat_session_id == csm1::_session_id)\
                object(ChatSessionMember = csm2 : css::_chat_session_id == csm2::_session_id)\
                query((?))
struct SingleChatSession {
    #pragma db column(css::_chat_session_id)
    std::string chat_session_id;
    #pragma db column(csm2::_user_id)
    std::string friend_id;
};

// 这里条件必须是指定条件：  css::chat_session_type==2 && csm.user_id=uid
#pragma db view object(ChatSession = css)\
                object(ChatSessionMember = csm : css::_chat_session_id == csm::_session_id)\
                query((?))
struct GroupChatSession {
    #pragma db column(css::_chat_session_id)
    std::string chat_session_id;
    #pragma db column(css::_chat_session_name)
    std::string chat_session_name;
};

}