
#ifndef ISTEAMMATCHMAKING008_H
#define ISTEAMMATCHMAKING008_H
#ifdef STEAM_WIN32
#pragma once
#endif

//-----------------------------------------------------------------------------
// Purpose: Functions for match making services for clients to get to favorites
//			and to operate on game lobbies.
//-----------------------------------------------------------------------------
class ISteamMatchmaking008
{
public:
	// game server favorites storage
	// saves basic details about a multiplayer game server locally

	// returns the number of favorites servers the user has stored
	virtual int GetFavoriteGameCount() = 0;
	
	// returns the details of the game server
	// iGame is of range [0,GetFavoriteGameCount())
	// *pnIP, *pnConnPort are filled in the with IP:port of the game server
	// *punFlags specify whether the game server was stored as an explicit favorite or in the history of connections
	// *pRTime32LastPlayedOnServer is filled in the with the Unix time the favorite was added
	virtual bool GetFavoriteGame( int iGame, AppId_t *pnAppID, uint32 *pnIP, uint16 *pnConnPort, uint16 *pnQueryPort, uint32 *punFlags, uint32 *pRTime32LastPlayedOnServer ) = 0;

	// adds the game server to the local list; updates the time played of the server if it already exists in the list
	virtual int AddFavoriteGame( AppId_t nAppID, uint32 nIP, uint16 nConnPort, uint16 nQueryPort, uint32 unFlags, uint32 rTime32LastPlayedOnServer ) =0;
	
	// removes the game server from the local storage; returns true if one was removed
    virtual bool RemoveFavoriteGame( AppId_t nAppID, uint32 nIP, uint16 nConnPort, uint16 nQueryPort, uint32 unFlags ) = 0;

	///////
	// Game lobby functions

	// Get a list of relevant lobbies
	// this is an asynchronous request
	// results will be returned by LobbyMatchList_t callback & call result, with the number of lobbies found
	// this will never return lobbies that are full
	// to add more filter, the filter calls below need to be call before each and every RequestLobbyList() call
	// use the CCallResult<> object in steam_api.h to match the SteamAPICall_t call result to a function in an object, e.g.
	/*
		class CMyLobbyListManager
		{
			CCallResult<CMyLobbyListManager, LobbyMatchList_t> m_CallResultLobbyMatchList;
			void FindLobbies()
			{
				// SteamMatchmaking()->AddRequestLobbyListFilter*() functions would be called here, before RequestLobbyList()
				SteamAPICall_t hSteamAPICall = SteamMatchmaking()->RequestLobbyList();
				m_CallResultLobbyMatchList.Set( hSteamAPICall, this, &CMyLobbyListManager::OnLobbyMatchList );
			}

			void OnLobbyMatchList( LobbyMatchList_t *pLobbyMatchList, bool bIOFailure )
			{
				// lobby list has be retrieved from Steam back-end, use results
			}
		}
	*/
	// 
	virtual SteamAPICall_t RequestLobbyList() = 0;
	// filters for lobbies
	// this needs to be called before RequestLobbyList() to take effect
	// these are cleared on each call to RequestLobbyList()
	virtual void AddRequestLobbyListStringFilter( const char *pchKeyToMatch, const char *pchValueToMatch, ELobbyComparison eComparisonType ) = 0;
	// numerical comparison
	virtual void AddRequestLobbyListNumericalFilter( const char *pchKeyToMatch, int nValueToMatch, ELobbyComparison eComparisonType ) = 0;
	// returns results closest to the specified value. Multiple near filters can be added, with early filters taking precedence
	virtual void AddRequestLobbyListNearValueFilter( const char *pchKeyToMatch, int nValueToBeCloseTo ) = 0;
	// returns only lobbies with the specified number of slots available
	virtual void AddRequestLobbyListFilterSlotsAvailable( int nSlotsAvailable ) = 0;
	// sets the distance for which we should search for lobbies (based on users IP address to location map on the Steam backed)
	virtual void AddRequestLobbyListDistanceFilter( ELobbyDistanceFilter eLobbyDistanceFilter ) = 0;
	// sets how many results to return, the lower the count the faster it is to download the lobby results & details to the client
	virtual void AddRequestLobbyListResultCountFilter( int cMaxResults ) = 0;

	// returns the CSteamID of a lobby, as retrieved by a RequestLobbyList call
	// should only be called after a LobbyMatchList_t callback is received
	// iLobby is of the range [0, LobbyMatchList_t::m_nLobbiesMatching)
	// the returned CSteamID::IsValid() will be false if iLobby is out of range
	STEAMWORKS_STRUCT_RETURN_1(CSteamID, GetLobbyByIndex, int, iLobby) /*virtual CSteamID GetLobbyByIndex( int iLobby ) = 0;*/

	// Create a lobby on the Steam servers.
	// If private, then the lobby will not be returned by any RequestLobbyList() call; the CSteamID
	// of the lobby will need to be communicated via game channels or via InviteUserToLobby()
	// this is an asynchronous request
	// results will be returned by LobbyCreated_t callback and call result; lobby is joined & ready to use at this pointer
	// a LobbyEnter_t callback will also be received (since the local user is joining their own lobby)
	virtual SteamAPICall_t CreateLobby( ELobbyType eLobbyType, int cMaxMembers ) = 0;

	// Joins an existing lobby
	// this is an asynchronous request
	// results will be returned by LobbyEnter_t callback & call result, check m_EChatRoomEnterResponse to see if was successful
	// lobby metadata is available to use immediately on this call completing
	virtual SteamAPICall_t JoinLobby( CSteamID steamIDLobby ) = 0;

	// Leave a lobby; this will take effect immediately on the client side
	// other users in the lobby will be notified by a LobbyChatUpdate_t callback
	virtual void LeaveLobby( CSteamID steamIDLobby ) = 0;

	// Invite another user to the lobby
	// the target user will receive a LobbyInvite_t callback
	// will return true if the invite is successfully sent, whether or not the target responds
	// returns false if the local user is not connected to the Steam servers
	// if the other user clicks the join link, a GameLobbyJoinRequested_t will be posted if the user is in-game,
	// or if the game isn't running yet the game will be launched with the parameter +connect_lobby <64-bit lobby id>
	virtual bool InviteUserToLobby( CSteamID steamIDLobby, CSteamID steamIDInvitee ) = 0;

	// Lobby iteration, for viewing details of users in a lobby
	// only accessible if the lobby user is a member of the specified lobby
	// persona information for other lobby members (name, avatar, etc.) will be asynchronously received
	// and accessible via ISteamFriends interface
	
	// returns the number of users in the specified lobby
	virtual int GetNumLobbyMembers( CSteamID steamIDLobby ) = 0;
	// returns the CSteamID of a user in the lobby
	// iMember is of range [0,GetNumLobbyMembers())
	STEAMWORKS_STRUCT_RETURN_2(CSteamID, GetLobbyMemberByIndex, CSteamID, steamIDLobby, int, iMember) /*virtual CSteamID GetLobbyMemberByIndex( CSteamID steamIDLobby, int iMember ) = 0;*/

	// Get data associated with this lobby
	// takes a simple key, and returns the string associated with it
	// "" will be returned if no value is set, or if steamIDLobby is invalid
	virtual const char *GetLobbyData( CSteamID steamIDLobby, const char *pchKey ) = 0;
	// Sets a key/value pair in the lobby metadata
	// each user in the lobby will be broadcast this new value, and any new users joining will receive any existing data
	// this can be used to set lobby names, map, etc.
	// to reset a key, just set it to ""
	// other users in the lobby will receive notification of the lobby data change via a LobbyDataUpdate_t callback
	virtual bool SetLobbyData( CSteamID steamIDLobby, const char *pchKey, const char *pchValue ) = 0;

	// returns the number of metadata keys set on the specified lobby
	virtual int GetLobbyDataCount( CSteamID steamIDLobby ) = 0;

	// returns a lobby metadata key/values pair by index, of range [0, GetLobbyDataCount())
	virtual bool GetLobbyDataByIndex( CSteamID steamIDLobby, int iLobbyData, char *pchKey, int cchKeyBufferSize, char *pchValue, int cchValueBufferSize ) = 0;

	// removes a metadata key from the lobby
	virtual bool DeleteLobbyData( CSteamID steamIDLobby, const char *pchKey ) = 0;

	// Gets per-user metadata for someone in this lobby
	virtual const char *GetLobbyMemberData( CSteamID steamIDLobby, CSteamID steamIDUser, const char *pchKey ) = 0;
	// Sets per-user metadata (for the local user implicitly)
	virtual void SetLobbyMemberData( CSteamID steamIDLobby, const char *pchKey, const char *pchValue ) = 0;
	
	// Broadcasts a chat message to the all the users in the lobby
	// users in the lobby (including the local user) will receive a LobbyChatMsg_t callback
	// returns true if the message is successfully sent
	// pvMsgBody can be binary or text data, up to 4k
	// if pvMsgBody is text, cubMsgBody should be strlen( text ) + 1, to include the null terminator
	virtual bool SendLobbyChatMsg( CSteamID steamIDLobby, const void *pvMsgBody, int cubMsgBody ) = 0;
	// Get a chat message as specified in a LobbyChatMsg_t callback
	// iChatID is the LobbyChatMsg_t::m_iChatID value in the callback
	// *pSteamIDUser is filled in with the CSteamID of the member
	// *pvData is filled in with the message itself
	// return value is the number of bytes written into the buffer
	virtual int GetLobbyChatEntry( CSteamID steamIDLobby, int iChatID, CSteamID *pSteamIDUser, void *pvData, int cubData, EChatEntryType *peChatEntryType ) = 0;

	// Refreshes metadata for a lobby you're not necessarily in right now
	// you never do this for lobbies you're a member of, only if your
	// this will send down all the metadata associated with a lobby
	// this is an asynchronous call
	// returns false if the local user is not connected to the Steam servers
	// restart are returned by a LobbyDataUpdate_t callback
	virtual bool RequestLobbyData( CSteamID steamIDLobby ) = 0;
	
	// sets the game server associated with the lobby
	// usually at this point, the users will join the specified game server
	// either the IP/Port or the steamID of the game server has to be valid, depending on how you want the clients to be able to connect
	virtual void SetLobbyGameServer( CSteamID steamIDLobby, uint32 unGameServerIP, uint16 unGameServerPort, CSteamID steamIDGameServer ) = 0;
	// returns the details of a game server set in a lobby - returns false if there is no game server set, or that lobby doesn't exist
	virtual bool GetLobbyGameServer( CSteamID steamIDLobby, uint32 *punGameServerIP, uint16 *punGameServerPort, CSteamID *psteamIDGameServer ) = 0;

	// set the limit on the # of users who can join the lobby
	virtual bool SetLobbyMemberLimit( CSteamID steamIDLobby, int cMaxMembers ) = 0;
	// returns the current limit on the # of users who can join the lobby; returns 0 if no limit is defined
	virtual int GetLobbyMemberLimit( CSteamID steamIDLobby ) = 0;

	// updates which type of lobby it is
	// only lobbies that are k_ELobbyTypePublic or k_ELobbyTypeInvisible, and are set to joinable, will be returned by RequestLobbyList() calls
	virtual bool SetLobbyType( CSteamID steamIDLobby, ELobbyType eLobbyType ) = 0;

	// sets whether or not a lobby is joinable - defaults to true for a new lobby
	// if set to false, no user can join, even if they are a friend or have been invited
	virtual bool SetLobbyJoinable( CSteamID steamIDLobby, bool bLobbyJoinable ) = 0;

	// returns the current lobby owner
	// you must be a member of the lobby to access this
	// there always one lobby owner - if the current owner leaves, another user will become the owner
	// it is possible (bur rare) to join a lobby just as the owner is leaving, thus entering a lobby with self as the owner
	STEAMWORKS_STRUCT_RETURN_1(CSteamID, GetLobbyOwner, CSteamID, steamIDLobby) /*virtual CSteamID GetLobbyOwner( CSteamID steamIDLobby ) = 0;*/

	// changes who the lobby owner is
	// you must be the lobby owner for this to succeed, and steamIDNewOwner must be in the lobby
	// after completion, the local user will no longer be the owner
	virtual bool SetLobbyOwner( CSteamID steamIDLobby, CSteamID steamIDNewOwner ) = 0;
};

#endif // ISTEAMMATCHMAKING008_H
