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using Google.Protobuf;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.ExtensionMethods;
using Tango.PMR;
using Tango.PMR.Common;
namespace Tango.DataStore
{
/// <summary>
/// Contains data store helper methods.
/// </summary>
public static class DataStoreHelper
{
/// <summary>
/// Gets the data store data type by the specified object type.
/// </summary>
/// <param name="value">The value.</param>
/// <returns></returns>
public static DataType GetDataType(Object value)
{
return GetDataType(value.GetType());
}
/// <summary>
/// Gets data store data type by the specified .net type.
/// </summary>
/// <param name="type">The type.</param>
/// <returns></returns>
/// <exception cref="System.NotSupportedException"></exception>
public static DataType GetDataType(Type type)
{
if (type == typeof(Int32))
{
return DataType.Int32;
}
else if (type == typeof(float))
{
return DataType.Float;
}
else if (type == typeof(double))
{
return DataType.Double;
}
else if (type == typeof(String))
{
return DataType.String;
}
else if (type == typeof(bool))
{
return DataType.Boolean;
}
else if (type == typeof(byte[]))
{
return DataType.Bytes;
}
else if (type == typeof(DataStoreProtoObject))
{
return DataType.Proto;
}
else if (typeof(IMessage).IsAssignableFrom(type))
{
return DataType.Proto;
}
throw new NotSupportedException($"The specified type '{type.Name}' is not supported by the data store.");
}
/// <summary>
/// Gets the CLR type by specified data store data type.
/// </summary>
/// <param name="type">The type.</param>
/// <returns></returns>
/// <exception cref="System.NotSupportedException">The specified data type is not supported.</exception>
//public static Type GetType(DataType type)
//{
// switch (type)
// {
// case DataType.Boolean:
// return typeof(bool);
// case DataType.Bytes:
// return typeof(byte[]);
// case DataType.Double:
// return typeof(double);
// case DataType.Float:
// return typeof(float);
// case DataType.Int32:
// return typeof(Int32);
// case DataType.String:
// return typeof(String);
// case DataType.Proto:
// return typeof(DataStoreProtoObject);
// }
// throw new NotSupportedException("The specified data type is not supported.");
//}
/// <summary>
/// Formats the data store item as a string.
/// </summary>
/// <param name="item">The item.</param>
/// <returns></returns>
public static String FormatDataStoreItem(IDataStoreItem item)
{
if (item.Type == DataType.Bytes)
{
byte[] bytes = (byte[])item.Value;
StringBuilder hex = new StringBuilder();
foreach (byte b in bytes)
{
hex.AppendFormat("{0:x2} ", b);
}
return hex.ToString();
}
else if (item.Type == DataType.Proto)
{
return (item.Value as DataStoreProtoObject).Message.ToJsonString();
}
else
{
return $"{item.Key}: {item.Value}";
}
}
}
}
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