using Amazon.DynamoDBv2;
using Amazon.DynamoDBv2.DocumentModel;
using Amazon.DynamoDBv2.Model;


using ServerCore;
using ServerBase;
using ServerCommon;


namespace GameServer;

public class CaliumEventTicker : EntityTicker
{
    private DynamoDbClient? m_dynamoDb_client { get; set; } = null;
    
    public CaliumEventTicker(double onTickIntervalMilliseconds, CancellationTokenSource? cts) 
        : base(EntityType.CaliumEventTicker, onTickIntervalMilliseconds, cts)
    {
        var server_logic = GameServerApp.getServerLogic();
        m_dynamoDb_client = server_logic.getDynamoDbClient();
    }

    public override async Task onTaskTick()
    {
        NullReferenceCheckHelper.throwIfNull(m_dynamoDb_client, () => $"dynamodb client is null !!! ");

        var calium_storage_entity = GameServerApp.getServerLogic().findGlobalEntity<CaliumStorageEntity>();
        NullReferenceCheckHelper.throwIfNull(calium_storage_entity, () => "calium storage entity is null !!!");

        var calium_event_action = calium_storage_entity.getEntityAction<CaliumEventAction>();
        NullReferenceCheckHelper.throwIfNull(calium_event_action, () => $"calium_event_action is null !!! - {calium_storage_entity.toBasicString()}");
        
        // 1. doc 가져오기
        var search = await searchDocuments();

        foreach (var doc in search.list)
        {
            var (result, change_doc) = await calium_event_action.updateCaliumEventStatus(doc, CaliumEventStatus.Regist, CaliumEventStatus.Sending);
            if (result.isFail() || null == change_doc) continue;

            // 2. 재전송 처리
            _ = await sendCaliumEventAsync(change_doc);
        }
    }

    public override string toBasicString()
    {
        return $"{this.getTypeName()}";
    }

    public override string toSummaryString()
    {
        return $"{this.getTypeName()}";
    }

    private async Task<Result> sendCaliumEventAsync(CaliumEventDoc sendDoc)
    {
        var server_logic = GameServerApp.getServerLogic();
        var calium_event_entity = server_logic.findGlobalEntity<CaliumStorageEntity>();
        NullReferenceCheckHelper.throwIfNull(calium_event_entity, () => "calium_event_entity is null !!!");

        var calium_event_action = calium_event_entity.getEntityAction<CaliumEventAction>();
        NullReferenceCheckHelper.throwIfNull(calium_event_action, () => $"calium_event_action is null !!! - {calium_event_entity.toBasicString()}");

        var result = await calium_event_action.sendCaliumEventFromDB(sendDoc);
        return result;
    }
    
    private async Task<(Result result, List<CaliumEventDoc> list)> searchDocuments()
    {
        NullReferenceCheckHelper.throwIfNull(m_dynamoDb_client, () => $"dynamodb client is null !!! ");

        var query_config = new QueryOperationConfig();
        query_config.Filter.AddCondition(PrimaryKey.PK_Define, QueryOperator.Equal, CaliumEventDoc.pk);
        query_config.Limit = 10;
        query_config.FilterExpression = new Expression
        {
            ExpressionStatement = "CaliumEventAttrib.#status = :statusValue",
            ExpressionAttributeNames = new Dictionary<string, string>
            {
                { "#status", "status" }
            },
            ExpressionAttributeValues = new Dictionary<string, DynamoDBEntry>
            {
                { ":statusValue", CaliumEventStatus.Regist.ToString() }
            }
        };
        
        var list = await m_dynamoDb_client.simpleQueryDocTypesWithQueryOperationConfig<CaliumEventDoc>(query_config);

        return list;
    }
}