using ServerCommon;
using ServerCore; using ServerBase;

using META_ID = System.UInt32;

namespace GameServer
{
    public class DBQCraftRecipeReadAll : QueryExecutorBase
    {
        private string m_combination_key_for_pk = string.Empty;

        private string m_craft_recipe_pk = string.Empty;

        private readonly Dictionary<META_ID, CraftRecipeDoc> m_to_read_craft_recipe_docs = new();

        public DBQCraftRecipeReadAll(string combinationKeyForPK) 
            : base(typeof(DBQCraftRecipeReadAll).Name)
        {
            m_combination_key_for_pk = combinationKeyForPK;
        }

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

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

            var recipe_doc = new CraftRecipeDoc();
            recipe_doc.setCombinationKeyForPK(m_combination_key_for_pk);

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

            m_craft_recipe_pk = recipe_doc.getPK();
            
            return Task.FromResult(result);
        }

        //=====================================================================================
        // onPrepareQuery()를 성공할 경우 호출된다.
        //=====================================================================================
        public override async Task<Result> onQuery()
        {
            var result = new Result();
            var err_msg = string.Empty;

            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();
            var craft_recipe_query_config = db_connector.makeQueryConfigForReadByPKOnly(m_craft_recipe_pk);

            var craft_recipe_action = owner.getEntityAction<CraftRecipeAction>();
            NullReferenceCheckHelper.throwIfNull(craft_recipe_action, () => "craft_recipe_action is null !!!");

            (result, var craft_recipe_read_docs) = await db_connector.simpleQueryDocTypesWithQueryOperationConfig<CraftRecipeDoc>(craft_recipe_query_config, eventTid: query_batch.getTransId());
            if (result.isFail())
            {
                return result;
            }

            result = await craft_recipe_action.AddRecipeFromDocs(craft_recipe_read_docs);
            if (result.isFail()) return result;

            return await Task.FromResult(result);
        }

        public Dictionary<META_ID, CraftRecipeDoc> getToReadItemDocs() => m_to_read_craft_recipe_docs;

        //=====================================================================================
        // DB 쿼리를 성공하고, doFnCommit()가 QueryResultType.NotCalledQueryFunc를 반환할 경우 호출된다.
        //=====================================================================================
        public override async Task onQueryResponseCommit()
        {
            await Task.CompletedTask;
            return;
        }

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

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