using Dapper;
using Oracle.ManagedDataAccess.Client;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;

namespace NetCore.BLL
{
    public class OracleDynamicParameters
    {
        private readonly DynamicParameters _dynamicParameters = new DynamicParameters();

        private readonly List<OracleParameter> _oracleParameters = new List<OracleParameter>();

        public void Add(string name, object value = null, DbType dbType = DbType.AnsiString, ParameterDirection? direction = null, int? size = null)
        {
            _dynamicParameters.Add(name, value, dbType, direction);
        }
        public void Add(string name, OracleDbType oracleDbType, object value)
        {
            var oracleParameter = new OracleParameter(name, oracleDbType) { Value = value };
            _oracleParameters.Add(oracleParameter);
        }

        public void Add(string name, OracleDbType oracleDbType, ParameterDirection direction)
        {
            var oracleParameter = new OracleParameter(name, oracleDbType) { Direction = direction };
            _oracleParameters.Add(oracleParameter);
        }

        public void Add(string name, OracleDbType oracleDbType, int size, ParameterDirection direction)
        {
            var oracleParameter = new OracleParameter(name, oracleDbType, size) { Direction = direction };
            _oracleParameters.Add(oracleParameter);
        }

        public void AddParameters(IDbCommand command, SqlMapper.Identity identity)
        {
            ((SqlMapper.IDynamicParameters)_dynamicParameters).AddParameters(command, identity);

            var oracleCommand = command as OracleCommand;

            if (oracleCommand != null)
            {
                oracleCommand.Parameters.AddRange(_oracleParameters.ToArray());
            }
        }

        public T Get<T>(string parameterName)
        {
            var parameter = _oracleParameters.SingleOrDefault(t => t.ParameterName == parameterName);
            if (parameter != null)
                return (T)Convert.ChangeType(parameter.Value, typeof(T));
            return default(T);
        }

        public OracleParameter GetOne(string parameterName)
        {
            var parameter = _oracleParameters.SingleOrDefault(t => t.ParameterName == parameterName);
            return parameter;
        }
        public T Get<T>(int index)
        {
            var parameter = _oracleParameters[index];
            if (parameter != null)
                return (T)Convert.ChangeType(parameter.Value, typeof(T));
            return default(T);
        }
    }
}