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

namespace WX.CRM.DataSynApi.Dao
{
    public class OracleDynamicParameters : SqlMapper.IDynamicParameters, SqlMapper.IParameterLookup
    {
        private readonly DynamicParameters _dynamicParameters = new DynamicParameters();

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

        public object this[string name]
        {
            get
            {
                var para = _oracleParameters.SingleOrDefault(t => t.ParameterName == name);
                if (para != null)
                    return para.Value;
                return null;
            }
        }

        public void Add(string name, object value = null, DbType dbType = DbType.AnsiString, ParameterDirection? direction = null, int? size = null)
        {
            _dynamicParameters.Add(name, value, dbType, direction, size);
        }

        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());
            }
        }
    }
}