using Amazon.DynamoDBv2.DocumentModel;
using Amazon.OpenSearchService.Model.Internal.MarshallTransformations;
using ServerCommon;
using ServerCore; using ServerBase;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace GameServer;

public class DBQRefuseQuestMail : QueryExecutorBase
{
    private string m_my_combination_key_for_pk = string.Empty;
    private UInt32 m_quest_id = 0;
    private UInt32 m_quest_revision = 0;

    private QuestMailDoc? m_quest_mail_doc_nullable = null;
    private string m_pk = string.Empty;
    private string m_sk = string.Empty;

    public DBQRefuseQuestMail(string myGuid, UInt32 questId, UInt32 questRevision)
        : base(typeof(DBQRefuseQuestMail).Name)
    {
        m_my_combination_key_for_pk = myGuid;
        m_quest_id = questId;
        m_quest_revision = questRevision;
    }

    //===================================================================================================
    // DB 쿼리 직전에 준비해야 할 로직들을 작성한다.
    //===================================================================================================
    public override Task<Result> onPrepareQuery()
    {
        var result = new Result();

        var owner = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

        m_quest_mail_doc_nullable = new QuestMailDoc(m_my_combination_key_for_pk, m_quest_id, m_quest_revision);

        var sk = $"{m_quest_id}#{m_quest_revision}";
        m_quest_mail_doc_nullable.setCombinationKeyForPKSK(m_my_combination_key_for_pk, sk);

        var error_code = m_quest_mail_doc_nullable.onApplyPKSK();
        if (error_code.isFail())
        {
            var err_msg = $"Failed to onApplyPKSK() !!! my_error_code : {error_code.toBasicString()} - {owner.toBasicString()}";
            result.setFail(error_code, err_msg);
            Log.getLogger().error(err_msg);
            return Task.FromResult(result);
        }

        m_pk = m_quest_mail_doc_nullable.getPK();
        m_sk = m_quest_mail_doc_nullable.getSK();

        return Task.FromResult(result);
    }

    //===================================================================================================
    // onPrepareQuery()를 성공할 경우 호출된다.
    //===================================================================================================
    public override async Task<Result> onQuery()
    {
        NullReferenceCheckHelper.throwIfNull(m_quest_mail_doc_nullable, () => $"m_quest_mail_doc_nullable is null !!!");

        var result = new Result();

        var owner = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

        var query_batch = getQueryBatch();
        NullReferenceCheckHelper.throwIfNull(query_batch, () => $"query_batch is null !!!");

        var db_connector = query_batch.getDynamoDbConnector();
        
        (result, var quest_mail_doc) = await m_quest_mail_doc_nullable.onCopyToDocument();
        if (result.isFail())
        {
            var err_msg = $"Failed to onCopyToDocument() !!! : {result.toBasicString()}, m_my_pk:{m_pk}, m_sk:{m_sk} - {toBasicString()}";
            Log.getLogger().error(err_msg);
            return result;
        }

        var table = db_connector.getTableByDoc<QuestMailDoc>();
        result = await table.simpleDeleteDocumentsWithBatchWrite([quest_mail_doc], query_batch.getTransId());
        if (result.isFail())
        {
            var err_msg = $"Failed to simpleDeleteDocumentsWithBatchWrite() !!! : {result.toBasicString()}, {quest_mail_doc.toPKSK()} - {toBasicString()}";
            Log.getLogger().error(err_msg);
            return result;
        }

        return result;
    }


    //===================================================================================================
    // DB 쿼리를 성공하고, doFnCommit()가 QueryResultType.NotCalledQueryFunc를 반환할 경우 호출된다.
    //===================================================================================================
    public override async Task onQueryResponseCommit()
    {
        //여기서 메모리 업데이트
        var owner = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

        var quest_mail_action = owner.getEntityAction<QuestMailAction>();
        NullReferenceCheckHelper.throwIfNull(quest_mail_action, () => $"quest_mail_action is null !!!");

        await quest_mail_action.deleteQuestMail(m_quest_id, m_quest_revision);

        return;
    }

    //===================================================================================================
    // DB 쿼리를 실패하고, doFnRollback()가 QueryResultType.NotCalledQueryFunc를 반환할 경우 호출된다.
    //===================================================================================================
    public override Task onQueryResponseRollback(Result errorResult)
    {
        return Task.CompletedTask;
    }

    private new Player? getOwner() => getQueryBatch()?.getLogActor() as Player;
}