using EggLink.DanhengServer.Command;
using EggLink.DanhengServer.Database;
using EggLink.DanhengServer.Database.Friend;
using EggLink.DanhengServer.Database.Inventory;
using EggLink.DanhengServer.Database.Player;
using EggLink.DanhengServer.Game.Player;
using EggLink.DanhengServer.Program;
using EggLink.DanhengServer.Proto;
using EggLink.DanhengServer.Server;
using EggLink.DanhengServer.Server.Packet.Send.Friend;
using EggLink.DanhengServer.Util;

namespace EggLink.DanhengServer.Game.Friend
{
    public class FriendManager(PlayerInstance player) : BasePlayerManager(player)
    {
        public FriendData FriendData { get; set; } = DatabaseHelper.Instance!.GetInstanceOrCreateNew<FriendData>(player.Uid);

        public void AddFriend(int targetUid)
        {
            var target = DatabaseHelper.Instance!.GetInstance<FriendData>(targetUid);
            if (target == null)
            {
                return;
            }

            if (FriendData.FriendList.Contains(targetUid))  // already friend
            {
                return;
            }

            if (FriendData.BlackList.Contains(targetUid))  // in black list
            {
                return;
            }

            if (FriendData.SendApplyList.Contains(targetUid))  // already send apply
            {
                return;
            }

            if (FriendData.ReceiveApplyList.Contains(targetUid))  // already receive apply
            {
                return;
            }

            FriendData.SendApplyList.Add(targetUid);
            target.ReceiveApplyList.Add(Player.Uid);

            var targetPlayer = Listener.GetActiveConnection(targetUid);
            targetPlayer?.SendPacket(new PacketSyncApplyFriendScNotify(Player.Data));
            targetPlayer?.Player!.FriendManager!.FriendData.ReceiveApplyList.Add(Player.Uid);
            DatabaseHelper.ToSaveUidList.Add(targetUid);

            DatabaseHelper.Instance!.UpdateInstance(FriendData);
            DatabaseHelper.Instance!.UpdateInstance(target);
        }

        public PlayerData? ConfirmAddFriend(int targetUid)
        {
            var target = DatabaseHelper.Instance!.GetInstance<FriendData>(targetUid);
            if (target == null)
            {
                return null;
            }

            if (FriendData.FriendList.Contains(targetUid))
            {
                return null;
            }

            if (FriendData.BlackList.Contains(targetUid))
            {
                return null;
            }

            if (!FriendData.ReceiveApplyList.Contains(targetUid))
            {
                return null;
            }

            FriendData.ReceiveApplyList.Remove(targetUid);
            FriendData.FriendList.Add(targetUid);
            target.FriendList.Add(Player.Uid);
            target.SendApplyList.Remove(Player.Uid);

            DatabaseHelper.Instance!.UpdateInstance(FriendData);
            DatabaseHelper.Instance!.UpdateInstance(target);

            var targetData = PlayerData.GetPlayerByUid(targetUid)!;
            var targetPlayer = Listener.GetActiveConnection(targetUid);
            targetPlayer?.SendPacket(new PacketSyncHandleFriendScNotify(Player.Uid, true, Player.Data));
            targetPlayer?.Player!.FriendManager!.FriendData.SendApplyList.Remove(Player.Uid);
            targetPlayer?.Player!.FriendManager!.FriendData.FriendList.Add(Player.Uid);

            Player.SendPacket(new PacketSyncHandleFriendScNotify((uint)targetData.Uid, true, targetData));

            return targetData;
        }

        public void RefuseAddFriend(int targetUid)
        {
            var target = DatabaseHelper.Instance!.GetInstance<FriendData>(targetUid);
            if (target == null)
            {
                return;
            }

            if (!FriendData.ReceiveApplyList.Contains(targetUid))
            {
                return;
            }

            FriendData.ReceiveApplyList.Remove(targetUid);
            target.SendApplyList.Remove(Player.Uid);

            var targetPlayer = Listener.GetActiveConnection(targetUid);
            targetPlayer?.Player!.FriendManager!.FriendData.SendApplyList.Remove(Player.Uid);
            DatabaseHelper.ToSaveUidList.Add(targetUid);

            DatabaseHelper.Instance!.UpdateInstance(FriendData);
            DatabaseHelper.Instance!.UpdateInstance(target);
        }

        public void RemoveFriend()
        {

        }

        public void SendMessage(int sendUid, int recvUid, string? message = null, int? extraId = null)
        {
            var data = new FriendChatData()
            {
                SendUid = sendUid,
                ReceiveUid = recvUid,
                Message = message ?? "",
                ExtraId = extraId ?? 0,
                SendTime = Extensions.GetUnixSec(),
            };

            if (!FriendData.ChatHistory.TryGetValue(recvUid, out FriendChatHistory? value))
            {
                FriendData.ChatHistory[recvUid] = new FriendChatHistory();
                value = FriendData.ChatHistory[recvUid];
            }

            value.MessageList.Add(data);

            PacketRevcMsgScNotify proto;
            if (message != null)
            {
                proto = new((uint)recvUid, (uint)sendUid, message);
            } else
            {
                proto = new((uint)recvUid, (uint)sendUid, (uint)(extraId ?? 0));
            }

            Player.SendPacket(proto);

            if (recvUid == ConfigManager.Config.ServerOption.ServerProfile.Uid)
            {
                if (message?.StartsWith('/') == true)
                {
                    var cmd = message[1..];
                    EntryPoint.CommandManager.HandleCommand(cmd, new PlayerCommandSender(Player));
                }
            }

            // receive message
            var recvPlayer = Listener.GetActiveConnection(recvUid)?.Player!;
            if (recvPlayer != null)
            {
                recvPlayer.FriendManager!.ReceiveMessage(sendUid, recvUid, message, extraId);
            } else
            {
                // offline
                var friendData = DatabaseHelper.Instance!.GetInstance<FriendData>(recvUid);
                if (friendData == null) return;  // not exist maybe server profile
                if (!friendData.ChatHistory.TryGetValue(sendUid, out FriendChatHistory? history))
                {
                    friendData.ChatHistory[sendUid] = new FriendChatHistory();
                    history = friendData.ChatHistory[sendUid];
                }
                history.MessageList.Add(data);

                DatabaseHelper.ToSaveUidList.Add(recvUid);
            }
        }

        public void ReceiveMessage(int sendUid, int recvUid, string? message = null, int? extraId = null)
        {
            var data = new FriendChatData()
            {
                SendUid = sendUid,
                ReceiveUid = recvUid,
                Message = message ?? "",
                ExtraId = extraId ?? 0,
                SendTime = Extensions.GetUnixSec(),
            };

            if (!FriendData.ChatHistory.TryGetValue(sendUid, out FriendChatHistory? value))
            {
                FriendData.ChatHistory[sendUid] = new FriendChatHistory();
                value = FriendData.ChatHistory[sendUid];
            }
            value.MessageList.Add(data);

            PacketRevcMsgScNotify proto;
            if (message != null)
            {
                proto = new((uint)recvUid, (uint)sendUid, message);
            }
            else
            {
                proto = new((uint)recvUid, (uint)sendUid, (uint)(extraId ?? 0));
            }

            Player.SendPacket(proto);
        }

        public List<ChatMessageData> GetHistoryInfo(int uid)
        {
            if (!FriendData.ChatHistory.TryGetValue(uid, out FriendChatHistory? history))
            {
                return [];
            }

            var info = new List<ChatMessageData>();

            foreach (var chat in history.MessageList)
            {
                info.Add(new ChatMessageData()
                {
                    Timestamp = (ulong)chat.SendTime,
                    Content = chat.Message,
                    ExtraId = (uint)chat.ExtraId,
                    SenderId = (uint)chat.SendUid,
                    MessageType = chat.ExtraId > 0 ? MsgType.Emoji : MsgType.CustomText,
                });
            }

            info.Reverse();

            return info;
        }

        public List<PlayerData> GetFriendList()
        {
            List<PlayerData> list = [];

            foreach (var friend in FriendData.FriendList)
            {
                var player = PlayerData.GetPlayerByUid(friend);

                if (player != null)
                {
                    list.Add(player);
                }
            }

            return list;
        }

        public List<PlayerData> GetBlackList()
        {
            List<PlayerData> list = [];

            foreach (var friend in FriendData.BlackList)
            {
                var player = PlayerData.GetPlayerByUid(friend);

                if (player != null)
                {
                    list.Add(player);
                }
            }

            return list;
        }

        public List<PlayerData> GetSendApplyList()
        {
            List<PlayerData> list = [];

            foreach (var friend in FriendData.SendApplyList)
            {
                var player = PlayerData.GetPlayerByUid(friend);

                if (player != null)
                {
                    list.Add(player);
                }
            }

            return list;
        }

        public List<PlayerData> GetReceiveApplyList()
        {
            List<PlayerData> list = [];

            foreach (var friend in FriendData.ReceiveApplyList)
            {
                var player = PlayerData.GetPlayerByUid(friend);

                if (player != null)
                {
                    list.Add(player);
                }
            }

            return list;
        }

        public GetFriendListInfoScRsp ToProto()
        {
            var proto = new GetFriendListInfoScRsp();

            var serverProfile = ConfigManager.Config.ServerOption.ServerProfile;

            proto.FriendList.Add(new FriendSimpleInfo()
            {
                PlayerInfo = new PlayerSimpleInfo()
                {
                    Uid = (uint)serverProfile.Uid,
                    HeadIcon = (uint)serverProfile.HeadIcon,
                    IsBanned = false,
                    Level = (uint)serverProfile.Level,
                    Nickname = serverProfile.Name,
                    ChatBubbleId = (uint)serverProfile.ChatBubbleId,
                    OnlineStatus = FriendOnlineStatus.Online,
                    Platform = PlatformType.Pc,
                    Signature = serverProfile.Signature,
                },
                IsMarked = false,
                RemarkName = ""
            });

            foreach (var player in GetFriendList())
            {
                var status = Listener.GetActiveConnection(player.Uid) == null ? FriendOnlineStatus.Offline : FriendOnlineStatus.Online;
                proto.FriendList.Add(new FriendSimpleInfo()
                {
                    PlayerInfo = player.ToSimpleProto(status),
                    IsMarked = false,
                    RemarkName = ""
                });
            }

            foreach (var player in GetBlackList())
            {
                var status = Listener.GetActiveConnection(player.Uid) == null ? FriendOnlineStatus.Offline : FriendOnlineStatus.Online;
                proto.BlackList.Add(player.ToSimpleProto(status));
            }

            return proto;
        }

        public GetFriendApplyListInfoScRsp ToApplyListProto()
        {
            GetFriendApplyListInfoScRsp proto = new();

            foreach (var player in GetSendApplyList())
            {
                proto.SendApplyList.Add((uint)player.Uid);
            }

            foreach (var player in GetReceiveApplyList())
            {
                var status = Listener.GetActiveConnection(player.Uid) == null ? FriendOnlineStatus.Offline : FriendOnlineStatus.Online;
                proto.ReceiveApplyList.Add(new FriendApplyInfo()
                {
                    PlayerInfo = player.ToSimpleProto(status)
                });
            }

            return proto;
        }
    }
}