using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;


using Newtonsoft.Json;
using MySqlConnector;


using ServerCore; using ServerBase;
using ServerCommon;


using GameServer;
using GameServer.NFT;


namespace GameServer
{
    public static class NFTHelper
    {
        public static async Task<(ServerErrorCode, string)> getEOA(string accountGuid)
        {
            var err_msg = string.Empty;

            try
            {
                string eoa = string.Empty;

                var read_func = delegate (MySqlDataReader dataReader)
                {
                    eoa = dataReader.GetString("eoa");

                    return ServerErrorCode.Success;
                };

                var server_logic = GameServerApp.getServerLogic();

                var result = await MySqlConnectorHelper.simpleQueryExecuteForReaderAsync( $"SELECT * FROM wallet_user WHERE id = '{accountGuid}'"
                                                                                        , read_func
                                                                                        , server_logic.getServerConfig().AccountNftDb );
                if(result.isFail())
                {
                    err_msg = $"Failed to simpleQueryExecuteForReaderAsync() !!! : {result.toBasicString()} - accountId:{accountGuid}";
                    Log.getLogger().error($"{err_msg}");

                    return (result.getErrorCode(), "");
                }
                
                return (ServerErrorCode.Success, eoa);
            }
            catch (Exception e)
            {
                Log.getLogger().error($"Exception !!! : {e}");
                return (ServerErrorCode.MySqlDbQueryException, string.Empty);
            }
        }

        public static async Task<List<MySqlTokenInfo>?> loadLandNFT()
        {
            var err_msg = string.Empty;

            try
            {
                var mysql_token_infos = new List<MySqlTokenInfo>();

                var read_func = delegate (MySqlDataReader dataReader)
                {
                    var mysql_token_info = new MySqlTokenInfo();

                    mysql_token_info.contract_address = dataReader.GetString("contract_address");
                    mysql_token_info.token_id = dataReader.GetInt32("token_id");
                    mysql_token_info.owner = dataReader.GetString("owner");
                    mysql_token_info.staker = dataReader.IsDBNull("staker") ? string.Empty : dataReader.GetString("staker");
                    mysql_token_info.is_staked = dataReader.GetInt32("is_staked");
                    mysql_token_info.updated_at = dataReader.GetDateTime("updated_at");

                    mysql_token_infos.Add(mysql_token_info);

                    return ServerErrorCode.Success;
                };

                var server_logic = GameServerApp.getServerLogic();

                var result = await MySqlConnectorHelper.simpleQueryExecuteForReaderAsync( $"SELECT * FROM wallet_user WHERE contract_address = '{ServerCommon.Constant.LAND_NFT_CONTRACT_ADDRESS}'"
                                                                                        , read_func
                                                                                        , server_logic.getServerConfig().AccountNftDb );
                if(result.isFail())
                {
                    err_msg = $"Failed to simpleQueryExecuteForReaderAsync() !!! : {result.toBasicString()}";
                    Log.getLogger().error($"{err_msg}");
                    return null;
                }

                return mysql_token_infos;
            }
            catch (Exception e)
            {
                Log.getLogger().error($"{e}");
                return null;
            }
        }

        public static async Task<(ServerErrorCode, List<MySqlTokenInfo>?)> getLandNFTs(string eoa)
        {
            var err_msg = string.Empty;

            try
            {
                var mysql_token_infos = new List<MySqlTokenInfo>();

                var read_func = delegate (MySqlDataReader dataReader)
                {
                    var mysql_token_info = new MySqlTokenInfo();

                    mysql_token_info.contract_address = dataReader.GetString("contract_address");
                    mysql_token_info.token_id = dataReader.GetInt32("token_id");
                    mysql_token_info.owner = dataReader.GetString("owner");
                    mysql_token_info.staker = dataReader.IsDBNull("staker") ? string.Empty : dataReader.GetString("staker");
                    mysql_token_info.is_staked = dataReader.GetInt32("is_staked");
                    mysql_token_info.updated_at = dataReader.GetDateTime("updated_at");

                    mysql_token_infos.Add(mysql_token_info);

                    return ServerErrorCode.Success;
                };

                var server_logic = GameServerApp.getServerLogic();
                NullReferenceCheckHelper.throwIfNull(server_logic, () => $"server_logic is null !!!");

                var result = await MySqlConnectorHelper.simpleQueryExecuteForReaderAsync( $"SELECT * FROM wallet_user WHERE contract_address = '{ServerCommon.Constant.LAND_NFT_CONTRACT_ADDRESS}'"
                                                                                        , read_func
                                                                                        , server_logic.getServerConfig().AccountNftDb );
                if(result.isFail())
                {
                    err_msg = $"Failed to simpleQueryExecuteForReaderAsync() !!! : {result.toBasicString()}";
                    Log.getLogger().error(err_msg);
                }

                return (ServerErrorCode.Success, mysql_token_infos);
            }
            catch (Exception e)
            {
                Log.getLogger().error($"Exception !!! : {e}");
                return (ServerErrorCode.MySqlDbQueryException, null);
            }
        }

        static public async Task<(Result, bool)> hasStakedNft(string? jwt)
        {
            var result = new Result();
            var err_msg = string.Empty;

            var server_logic = GameServerApp.getServerLogic();
            NullReferenceCheckHelper.throwIfNull(server_logic, () => "server_logic is null !!!");
            var server_config = server_logic.getServerConfig();
            NullReferenceCheckHelper.throwIfNull(server_config, () => "server_config is null !!!");

            if (server_config.OfflineMode == true)
            {
                result.setFail(ServerErrorCode.ServerOfflineModeEnable);
                return (result, false);
            }

            var full_url = server_config.NftRule.CPNftForOwnerAllGetUrl;

            (bool isSuccess, string resMsg) = await HttpClientHelper.sendHttpRequest("GET"
                                                                                    , full_url, jwt, null
                                                                                    , "application/json"
                                                                                    , "caliverse", "1.0" );
            if (isSuccess == false)
            {
                err_msg = $"Failed to sendWebServer() !!!, in getCPNftForOwnerAll() : resMsg:{resMsg}, targetUrl:{full_url}, jwt:{jwt}";
                result.setFail(ServerErrorCode.NftForOwnerAllGetFailed, err_msg);
                Log.getLogger().error(err_msg);

                return (result, false);
            }

            var nft_infos = JsonConvert.DeserializeObject<List<NFTInfo>>(resMsg);
            NullReferenceCheckHelper.throwIfNull(nft_infos, () => $"nft_infos is null !!!");

            var is_found = nft_infos.Any(nft => nft.IsStaked == 1);
            if (false == is_found)
            {
                err_msg = $"Not found Staked NFT !!!, in getCPNftForOwnerAll() : targetUrl:{full_url}, jwt:{jwt}";
                Log.getLogger().warn(err_msg);

                return (result, false);
            }

            return (result, true);
        }
    }
}