serverbrowser.h

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#ifndef ENGINE_SERVERBROWSER_H
#define ENGINE_SERVERBROWSER_H
 
#include "kernel.h"
 
#include <base/hash.h>
#include <base/system.h>
 
#include <engine/map.h>
#include <engine/shared/protocol.h>
 
#include <generated/protocol7.h>
 
#include <optional>
#include <unordered_set>
#include <vector>
 
static constexpr const char *DDNET_INFO_FILE = "ddnet-info.json";
static constexpr const char *DDNET_INFO_URL = "https://info.ddnet.org/info";
 
class CUIElement;
 
class CServerInfo
{
public:
    enum
    {
        LOC_UNKNOWN = 0,
        LOC_AFRICA,
        LOC_ASIA,
        LOC_AUSTRALIA,
        LOC_EUROPE,
        LOC_NORTH_AMERICA,
        LOC_SOUTH_AMERICA,
        // Special case China because it has an exceptionally bad
        // connection to the outside due to the Great Firewall of
        // China:
        // https://en.wikipedia.org/w/index.php?title=Great_Firewall&oldid=1019589632
        LOC_CHINA,
        NUM_LOCS,
    };
 
    enum EClientScoreKind
    {
        CLIENT_SCORE_KIND_UNSPECIFIED,
        CLIENT_SCORE_KIND_POINTS,
        CLIENT_SCORE_KIND_TIME,
        CLIENT_SCORE_KIND_TIME_BACKCOMPAT,
    };
 
    enum ERankState
    {
        RANK_UNAVAILABLE,
        RANK_RANKED,
        RANK_UNRANKED,
    };
 
    enum
    {
        MAX_COMMUNITY_ID_LENGTH = 32,
        MAX_COMMUNITY_COUNTRY_LENGTH = 32,
        MAX_COMMUNITY_TYPE_LENGTH = 32,
    };
 
    class CClient
    {
    public:
        char m_aName[MAX_NAME_LENGTH];
        char m_aClan[MAX_CLAN_LENGTH];
        int m_Country;
        int m_Score;
        bool m_Player;
        bool m_Afk;
        int m_FriendState;
        // skin info 0.6
        char m_aSkin[MAX_SKIN_LENGTH];
        bool m_CustomSkinColors;
        int m_CustomSkinColorBody;
        int m_CustomSkinColorFeet;
        // skin info 0.7
        char m_aaSkin7[protocol7::NUM_SKINPARTS][protocol7::MAX_SKIN_LENGTH];
        bool m_aUseCustomSkinColor7[protocol7::NUM_SKINPARTS];
        int m_aCustomSkinColor7[protocol7::NUM_SKINPARTS];
    };
 
    int m_ServerIndex;
 
    int m_Type;
    uint64_t m_ReceivedPackets;
    int m_NumReceivedClients;
 
    int m_NumAddresses;
    NETADDR m_aAddresses[MAX_SERVER_ADDRESSES];
 
    int m_QuickSearchHit;
    int m_FriendState;
    int m_FriendNum;
 
    int m_MaxClients;
    int m_NumClients;
    int m_MaxPlayers;
    int m_NumPlayers;
    int m_Flags;
    EClientScoreKind m_ClientScoreKind;
    TRISTATE m_Favorite;
    TRISTATE m_FavoriteAllowPing;
    char m_aCommunityId[MAX_COMMUNITY_ID_LENGTH];
    char m_aCommunityCountry[MAX_COMMUNITY_COUNTRY_LENGTH];
    char m_aCommunityType[MAX_COMMUNITY_TYPE_LENGTH];
    int m_Location;
    bool m_LatencyIsEstimated;
    int m_Latency; // in ms
    ERankState m_HasRank;
    char m_aGameType[16];
    char m_aName[64];
    char m_aMap[MAX_MAP_LENGTH];
    int m_MapCrc;
    int m_MapSize;
    char m_aVersion[32];
    char m_aAddress[MAX_SERVER_ADDRESSES * NETADDR_MAXSTRSIZE];
    CClient m_aClients[SERVERINFO_MAX_CLIENTS];
    int m_NumFilteredPlayers;
    bool m_RequiresLogin;
 
    static int EstimateLatency(int Loc1, int Loc2);
    static bool ParseLocation(int *pResult, const char *pString);
};
 
class CCommunityCountryServer
{
    NETADDR m_Address;
    char m_aTypeName[CServerInfo::MAX_COMMUNITY_TYPE_LENGTH];
 
public:
    CCommunityCountryServer(NETADDR Address, const char *pTypeName) :
        m_Address(Address)
    {
        str_copy(m_aTypeName, pTypeName);
    }
 
    NETADDR Address() const { return m_Address; }
    const char *TypeName() const { return m_aTypeName; }
};
 
class CCommunityCountry
{
    friend class CServerBrowser;
 
    char m_aName[CServerInfo::MAX_COMMUNITY_COUNTRY_LENGTH];
    int m_FlagId;
    std::vector<CCommunityCountryServer> m_vServers;
 
public:
    CCommunityCountry(const char *pName, int FlagId) :
        m_FlagId(FlagId)
    {
        str_copy(m_aName, pName);
    }
 
    const char *Name() const { return m_aName; }
    int FlagId() const { return m_FlagId; }
    const std::vector<CCommunityCountryServer> &Servers() const { return m_vServers; }
};
 
class CCommunityType
{
    char m_aName[CServerInfo::MAX_COMMUNITY_TYPE_LENGTH];
 
public:
    CCommunityType(const char *pName)
    {
        str_copy(m_aName, pName);
    }
 
    const char *Name() const { return m_aName; }
};
 
class CCommunityMap
{
    char m_aName[MAX_MAP_LENGTH];
 
public:
    CCommunityMap(const char *pName)
    {
        str_copy(m_aName, pName);
    }
 
    const char *Name() const { return m_aName; }
 
    bool operator==(const CCommunityMap &Other) const
    {
        return str_comp(Name(), Other.Name()) == 0;
    }
 
    bool operator!=(const CCommunityMap &Other) const
    {
        return !(*this == Other);
    }
 
    struct SHash
    {
        size_t operator()(const CCommunityMap &Map) const
        {
            return str_quickhash(Map.Name());
        }
    };
};
 
class CCommunity
{
    friend class CServerBrowser;
 
    char m_aId[CServerInfo::MAX_COMMUNITY_ID_LENGTH];
    char m_aName[64];
    std::optional<SHA256_DIGEST> m_IconSha256;
    char m_aIconUrl[128];
    std::vector<CCommunityCountry> m_vCountries;
    std::vector<CCommunityType> m_vTypes;
    bool m_HasFinishes = false;
    std::unordered_set<CCommunityMap, CCommunityMap::SHash> m_FinishedMaps;
 
public:
    CCommunity(const char *pId, const char *pName, std::optional<SHA256_DIGEST> IconSha256, const char *pIconUrl) :
        m_IconSha256(IconSha256)
    {
        str_copy(m_aId, pId);
        str_copy(m_aName, pName);
        str_copy(m_aIconUrl, pIconUrl);
    }
 
    const char *Id() const { return m_aId; }
    const char *Name() const { return m_aName; }
    const char *IconUrl() const { return m_aIconUrl; }
    const std::optional<SHA256_DIGEST> &IconSha256() const { return m_IconSha256; }
    const std::vector<CCommunityCountry> &Countries() const { return m_vCountries; }
    const std::vector<CCommunityType> &Types() const { return m_vTypes; }
    bool HasCountry(const char *pCountryName) const;
    bool HasType(const char *pTypeName) const;
    bool HasRanks() const { return m_HasFinishes; }
    CServerInfo::ERankState HasRank(const char *pMap) const;
};
 
class IFilterList
{
public:
    virtual ~IFilterList() = default;
    virtual void Add(const char *pElement) = 0;
    virtual void Remove(const char *pElement) = 0;
    virtual void Clear() = 0;
    virtual bool Empty() const = 0;
    virtual bool Filtered(const char *pElement) const = 0;
};
 
class ICommunityCache
{
public:
    virtual ~ICommunityCache() = default;
    virtual void Update(bool Force) = 0;
    virtual const std::vector<const CCommunity *> &SelectedCommunities() const = 0;
    virtual const std::vector<const CCommunityCountry *> &SelectableCountries() const = 0;
    virtual const std::vector<const CCommunityType *> &SelectableTypes() const = 0;
    virtual bool AnyRanksAvailable() const = 0;
    virtual bool CountriesTypesFilterAvailable() const = 0;
    virtual const char *CountryTypeFilterKey() const = 0;
};
 
class IServerBrowser : public IInterface
{
    MACRO_INTERFACE("serverbrowser")
public:
    /* Constants: Server Browser Sorting
        SORT_NAME - Sort by name.
        SORT_PING - Sort by ping.
        SORT_MAP - Sort by map
        SORT_GAMETYPE - Sort by game type. DM, TDM etc.
        SORT_NUMPLAYERS - Sort after how many players there are on the server.
        SORT_NUMFRIENDS - Sort after how many friends there are on the server.
    */
    enum
    {
        SORT_NAME = 0,
        SORT_PING,
        SORT_MAP,
        SORT_GAMETYPE,
        SORT_NUMPLAYERS,
        SORT_NUMFRIENDS,
    };
 
    enum
    {
        QUICK_SERVERNAME = 1,
        QUICK_PLAYER = 2,
        QUICK_MAPNAME = 4,
    };
 
    enum
    {
        TYPE_INTERNET = 0,
        TYPE_LAN,
        TYPE_FAVORITES,
        TYPE_FAVORITE_COMMUNITY_1,
        TYPE_FAVORITE_COMMUNITY_2,
        TYPE_FAVORITE_COMMUNITY_3,
        TYPE_FAVORITE_COMMUNITY_4,
        TYPE_FAVORITE_COMMUNITY_5,
        NUM_TYPES,
    };
 
    enum
    {
        LAN_PORT_BEGIN = 8303,
        LAN_PORT_END = 8310,
    };
 
    class CServerEntry
    {
    public:
        int64_t m_RequestTime;
        bool m_RequestIgnoreInfo;
        int m_GotInfo;
        CServerInfo m_Info;
 
        CServerEntry *m_pPrevReq; // request list
        CServerEntry *m_pNextReq;
    };
 
    static constexpr const char *COMMUNITY_DDNET = "ddnet";
    static constexpr const char *COMMUNITY_NONE = "none";
 
    static constexpr const char *COMMUNITY_COUNTRY_NONE = "none";
    static constexpr const char *COMMUNITY_TYPE_NONE = "None";
    static constexpr const char *COMMUNITY_ALL = "all";
 
    static constexpr const char *SEARCH_EXCLUDE_TOKEN = ";";
 
    virtual void Refresh(int Type, bool Force = false) = 0;
    virtual bool IsRefreshing() const = 0;
    virtual bool IsGettingServerlist() const = 0;
    virtual bool IsServerlistError() const = 0;
    virtual int LoadingProgression() const = 0;
 
    virtual int NumServers() const = 0;
 
    virtual int Players(const CServerInfo &Item) const = 0;
    virtual int Max(const CServerInfo &Item) const = 0;
 
    virtual int NumSortedServers() const = 0;
    virtual int NumSortedPlayers() const = 0;
    virtual const CServerInfo *SortedGet(int Index) const = 0;
 
    virtual const std::vector<CCommunity> &Communities() const = 0;
    virtual const CCommunity *Community(const char *pCommunityId) const = 0;
    virtual std::vector<const CCommunity *> SelectedCommunities() const = 0;
    virtual std::vector<const CCommunity *> FavoriteCommunities() const = 0;
    virtual std::vector<const CCommunity *> CurrentCommunities() const = 0;
    virtual unsigned CurrentCommunitiesHash() const = 0;
 
    virtual bool DDNetInfoAvailable() const = 0;
    virtual std::optional<SHA256_DIGEST> DDNetInfoSha256() const = 0;
 
    virtual ICommunityCache &CommunityCache() = 0;
    virtual const ICommunityCache &CommunityCache() const = 0;
    virtual IFilterList &FavoriteCommunitiesFilter() = 0;
    virtual IFilterList &CommunitiesFilter() = 0;
    virtual IFilterList &CountriesFilter() = 0;
    virtual IFilterList &TypesFilter() = 0;
    virtual const IFilterList &FavoriteCommunitiesFilter() const = 0;
    virtual const IFilterList &CommunitiesFilter() const = 0;
    virtual const IFilterList &CountriesFilter() const = 0;
    virtual const IFilterList &TypesFilter() const = 0;
    virtual void CleanFilters() = 0;
 
    virtual CServerEntry *Find(const NETADDR &Addr) = 0;
    virtual int GetCurrentType() = 0;
    virtual const char *GetTutorialServer() = 0;
};
 
#endif