using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace bnhtrade.Core.Logic.Account
{
    public class GetAccountCodeInfo
    {
        private string sqlConnectionString;
        private Data.Database.Account.ReadAccountCode readAccountCode;
        private Dictionary<int, Model.Account.AccountCode> cache;

        public GetAccountCodeInfo(string sqlConnectionString)
        {
            this.sqlConnectionString = sqlConnectionString;
            readAccountCode = new Data.Database.Account.ReadAccountCode(sqlConnectionString);
            cache = new Dictionary<int, Model.Account.AccountCode>();
        }

        public void CacheClear()
        {
            cache.Clear();
        }

        public void CacheFill()
        {
            CacheClear();

            var resultList = readAccountCode.All();
            foreach (var result in resultList)
            {
                cache.Add(result.AccountCodeId, result);
            }
        }

        public void CacheFill(List<int> accountCodeList, bool forceDbRead = false)
        {
            if (accountCodeList == null || !accountCodeList.Any())
            {
                return;
            }

            var accountCodeQueryList = new List<int>();
            foreach (var code in accountCodeList.Distinct().ToList())
            {
                if (forceDbRead)
                {
                    cache.Remove(code);
                    accountCodeQueryList.Add(code);
                }
                else if (!cache.ContainsKey(code))
                {
                    accountCodeQueryList.Add(code);
                }
            }

            // get db list
            var dbList = readAccountCode.ByAccountCode(accountCodeQueryList);

            // add to cache
            foreach (var item in dbList)
            {
                cache.Add(item.AccountCodeId, item);
            }
        }

        public Model.Account.AccountCode ByAccountCode(int accountCode, bool forceDbRead = false)
        {
            CacheFill(new List<int> { accountCode }, forceDbRead);

            if (cache.ContainsKey(accountCode))
            {
                return cache[accountCode];
            }
            else
            {
                return null;
            }
        }
    }
}