using System;
using System.Threading.Tasks;
using Windows.Storage;
using Windows.Storage.Streams;

namespace Wino.Helpers
{
    // Use these extension methods to store and retrieve local and roaming app data
    // More details regarding storing and retrieving app data at https://docs.microsoft.com/windows/uwp/app-settings/store-and-retrieve-app-data
    public static class SettingsStorageExtensions
    {
        public static async Task<byte[]> ReadBytesAsync(this StorageFile file)
        {
            if (file != null)
            {
                using (IRandomAccessStream stream = await file.OpenReadAsync())
                {
                    using (var reader = new DataReader(stream.GetInputStreamAt(0)))
                    {
                        await reader.LoadAsync((uint)stream.Size);
                        var bytes = new byte[stream.Size];
                        reader.ReadBytes(bytes);
                        return bytes;
                    }
                }
            }

            return null;
        }
    }
}