using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;


using USER_GUID = System.String;



namespace GameServer;

public class NotifySummonPartyMemberHandler
{
    public async Task recvSummonPartyMember(ServerMessage.Types.SummonPartyMemberNoti notify)
    {
        var server_logic = GameServerApp.getServerLogic();
        string err_msg;
        ArgumentNullException.ThrowIfNull(server_logic);
        
        // 1. 파티 정보 체크
        var party = GameServerApp.getServerLogic().findGlobalEntity<GlobalParty>()?.getParty(notify.SummonPartyGuid);
        if (null == party)
        {
            sendReplySummonPartyMemberAsync(notify.SummonPartyGuid, notify.SummonPartyGuid, notify.SummonUserGuid, SummonPartyMemberResultType.NotParty);
            return;
        }
        
        // 1-1. 파티멤버 체크
        var party_member_action = party.getEntityAction<GlobalPartyDetailMemberAction>();
        ArgumentNullException.ThrowIfNull(party_member_action);
        
        await party_member_action.loadPartyMember();
        
        var member = party_member_action.getMember(notify.SummonUserGuid);
        if (null == member)
        {
            err_msg = $"Failed to summon party member !!! - user is not party member - {notify.SummonUserGuid}";
            Log.getLogger().error(err_msg);
            
            sendReplySummonPartyMemberAsync(notify.SummonServerName, notify.SummonPartyGuid, notify.SummonUserGuid, SummonPartyMemberResultType.NotPartyMember);
            return;
        }

        // 2. 유저 체크
        var player_manager = server_logic.getPlayerManager();
        ArgumentNullException.ThrowIfNull(player_manager);
        if (!player_manager.tryGetUserByPrimaryKey(notify.SummonUserGuid, out var summon_user))
        {
            // 2-1. summon user login cache 체크
            var login_cache_request = new LoginCacheOtherUserRequest(server_logic, server_logic.getRedisConnector(), notify.SummonUserGuid);
            var result = await login_cache_request.fetchLogin();
            if(result.isFail())
            {
                err_msg = $"Failed to fetchLogin() !!! : {result.toBasicString()}";
                Log.getLogger().error(err_msg);
                return;
            }

            var login_cache = login_cache_request.getLoginCache();
            if (null == login_cache)
            {
                err_msg = $"Failed to summon party member !!! - user not logged in - {notify.SummonUserGuid}";
                Log.getLogger().error(err_msg);

                sendReplySummonPartyMemberAsync(notify.SummonServerName, notify.SummonPartyGuid, notify.SummonUserGuid, SummonPartyMemberResultType.LogOut);
                return;
            }
            
            // 2-2. target 서버로 전송
            var server_message = new ServerMessage();
            server_message.SummonPartyMemberNoti = new();
            server_message.SummonPartyMemberNoti.SummonPartyGuid = notify.SummonPartyGuid;
            server_message.SummonPartyMemberNoti.SummonUserGuid = notify.SummonUserGuid;
            server_message.SummonPartyMemberNoti.SummonServerName = login_cache.CurrentServer;
            server_message.SummonPartyMemberNoti.SummonPos = notify.SummonPos;

            PartyHelper.sendToServer(server_message, login_cache.CurrentServer);
            return;
        }
        
        // 3. Summon User 상태 체크
        var check_summon_user_condition = await checkSummonUserConditionAsync(party, summon_user);
        if (check_summon_user_condition != SummonPartyMemberResultType.Accept)
        {
            sendReplySummonPartyMemberAsync(notify.SummonServerName, notify.SummonPartyGuid, notify.SummonUserGuid, check_summon_user_condition);
            return;
        }
        
        // 3. Summon Message 전송
        var client_message = new ClientToGame();
        client_message.Message = new ClientToGameMessage();
        client_message.Message.SummonPartyMemberNoti = new();

        PartyHelper.sendToClient(client_message, summon_user.getHostId());
    }

    private async Task<SummonPartyMemberResultType> checkSummonUserConditionAsync(GlobalPartyDetail party, Player summon_user)
    {
        // 1. 파티원 체크
        var party_member_attribute = party.getEntityAttribute<PartyMemberAttribute>();
        if (null == party_member_attribute) return SummonPartyMemberResultType.NotParty;

        var party_member = party_member_attribute.getPartyMember(summon_user.getUserGuid());
        if (null == party_member) return SummonPartyMemberResultType.NotParty;
        
        // 2. 방해 금지 상태 체크
        var user_attribute = summon_user.getEntityAttribute<UserAttribute>();
        NullReferenceCheckHelper.throwIfNull(user_attribute, () => $"user_attribute is null !!!");
        if (user_attribute.PlayerState == PlayerStateType.DontDistrub) return SummonPartyMemberResultType.DoNotDisturb;
        
        // 3. 소환 상태 체크
        if(false == party_member.Summon.IsAlreadySummon) return SummonPartyMemberResultType.NotSummon;
        
        return await Task.FromResult(SummonPartyMemberResultType.Accept);
    }
    
    private void sendReplySummonPartyMemberAsync(string summon_server, string summon_party_guid, USER_GUID summon_user_guid, SummonPartyMemberResultType reply)
    {
        var server_message = new ServerMessage();
        server_message.ReplySummonPartyMemberNoti = new();
        server_message.ReplySummonPartyMemberNoti.SummonPartyGuid = summon_party_guid;
        server_message.ReplySummonPartyMemberNoti.SummonUserGuid = summon_user_guid;
        server_message.ReplySummonPartyMemberNoti.Result = reply;

        PartyHelper.sendToServer(server_message, summon_server);
    }
}