using System.Text;


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


using META_ID = System.UInt32;


namespace GameServer;


public class RabbitMailSendHandler
{
    public async Task MOS2GS_mailSend(ServerMessage.Types.MOS2GS_NTF_MAIL_SEND mailSendMsg)
    {        
        var user_guid = mailSendMsg.UserGuid;
        StringBuilder str_builder = new();

        if (user_guid is null)
        {
            Log.getLogger().error($"user_gudi is null");
            return;
        }
        
        Log.getLogger().debug($"MOS2GS_mailSend start user_guid : {user_guid}");

        (var result, var nickname_attrib) = await NicknameDoc.findNicknameFromGuid(user_guid);
        if (result.isFail())
        {
            Log.getLogger().error($"Not found user Nickname, guid : {user_guid}");
            return;
        }
        NullReferenceCheckHelper.throwIfNull(nickname_attrib, () => $"nickname_attrib is null !!!");

        str_builder.Append($"guid : {user_guid}, nickname : {nickname_attrib.Nickname}");

        (result, var nickname_registry_attrib) = await NicknameHelper.findNickname(nickname_attrib.Nickname);
        if (result.isFail())
        {
            Log.getLogger().error($"Not found user Nickname registry, {str_builder.ToString()}");
            return;
        }
        NullReferenceCheckHelper.throwIfNull(nickname_registry_attrib, () => $"nickname_registry_attrib is null !!!");

        str_builder.Append($" accountId : {nickname_registry_attrib.AccountId}");

        (result, var account_base_doc) =
            await AccountBaseDoc.findUserGuidFromAccountId(nickname_registry_attrib.AccountId);
        if (result.isFail())
        {
            Log.getLogger().error($"Not found user accountId registry, {str_builder.ToString()}");
            return;
        }
        NullReferenceCheckHelper.throwIfNull(account_base_doc, () => $"account_base_doc is null !!!");

        var account_base_attrib = account_base_doc.getAttrib<AccountBaseAttrib>();
        if (account_base_attrib == null)
        {
            Log.getLogger().error($"Not found user accountBaseAttrib, {str_builder.ToString()}");
            return;
        }

        string title_txt = string.Empty;
        foreach (var title in mailSendMsg.Title)
        {
            if ((int)title.LanguageType == (int)account_base_attrib.LanguageType)
            {
                var txt = StringRuleHelper.convertStringFromBase64(title.Text);
                title_txt = txt;
                str_builder.Append($" title_txt : {title_txt}");
                break;
            }
        }

        //일단 하드코딩, sender에 대한 정의가 확정되면 바꿀것. 
        //string sender = "시스템 관리자";
        string senderName = string.Empty;
        foreach (var sender in mailSendMsg.Sender)
        {
            if ((int)sender.LanguageType == (int)account_base_attrib.LanguageType)
            {
                var txt = StringRuleHelper.convertStringFromBase64(sender.Text);
                senderName = txt;
                str_builder.Append($" senderName : {senderName}");
                break;
            }
        }
        
        string mail_msg = string.Empty;
        foreach (var msg in mailSendMsg.Msg)
        {
            if ((int)msg.LanguageType == (int)account_base_attrib.LanguageType)
            {
                var txt = StringRuleHelper.convertStringFromBase64(msg.Text);
                mail_msg = txt;
                str_builder.Append($" mail_msg : {mail_msg}");
                break;
            }
        }

        List<ServerCommon.MailItem> mail_items = new();
        foreach (var item in mailSendMsg.ItemList)
        {
            var item_id = item.ItemId;
            var item_cnt = item.Count;
            if (MetaData.Instance._ItemTable.TryGetValue(item_id, out var item_data) == false)
            {
                Log.getLogger().error($"Not found item data, item_id : {item_id}, {str_builder.ToString()}");
                return;
            }

            ServerCommon.MailItem mail_item = new();
            mail_item.ItemId = (META_ID)item_id;
            mail_item.Count = item_cnt;
            mail_item.ProductId = 0;
            mail_item.isRepeatProduct = false;
            str_builder.Append($" ItemId : {item_id}").Append($" item_cnt : {item_cnt}");
            mail_items.Add(mail_item);
        }

        (result, var mail_doc) = await Mail.createSystemMailDocByMOS2User(user_guid, nickname_attrib.Nickname, senderName, title_txt, mail_msg, mail_items);
        if (result.isFail() || mail_doc is null)
        {
            Log.getLogger().error($"fail create system mail, {str_builder.ToString()}");
            return;
        }
        var to_write_docs = new List<DynamoDbDocBase>();
        to_write_docs.Add(mail_doc);
        var server_logic = GameServerApp.getServerLogic();
        var system_manager = server_logic.getSystemMailManager();

        var batch = new QueryBatchEx<QueryRunnerWithDocument>(system_manager, LogActionType.MailSend, server_logic.getDynamoDbClient(), true);
        {
            batch.addQuery(new DBQEntityWrite(to_write_docs));
            batch.addQuery(new QueryFinal(), async (_query) =>
            {
                await Task.CompletedTask;
                var player_manager = server_logic.getPlayerManager();
                if (player_manager.tryGetUserByPrimaryKey(user_guid, out var found_user) == true)
                {
                    var found_user_mail_action = found_user.getEntityAction<MailAction>();
                    found_user_mail_action.NewReceivedMail();
                }

                return QueryBatchBase.QueryResultType.Success;
            });
        }

        List<ILogInvoker> invokers = new List<ILogInvoker>();

        var task_log_data = MailBusinessLogHelper.toMailLogInfo(mail_doc);
        invokers.Add(new MailBusinessLog(task_log_data));
        batch.appendBusinessLogs(invokers);

        result = await QueryHelper.sendQueryAndBusinessLog(batch);

        if (result.isFail())
        {
            Log.getLogger().error($"system mail send error, {str_builder.ToString()}");
            return;
        }
        Log.getLogger().info($"system mail send success, {str_builder.ToString()}");

        return;
    }

}