// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace Microsoft.AspNetCore.Components.Forms;
 
internal sealed class BrowserFile : IBrowserFile
{
    private long _size;
 
    internal InputFile Owner { get; set; } = default!;
 
    public int Id { get; set; }
 
    public string Name { get; set; } = string.Empty;
 
    public DateTimeOffset LastModified { get; set; }
 
    public long Size
    {
        get => _size;
        set
        {
            if (value < 0)
            {
                throw new ArgumentOutOfRangeException(nameof(Size), $"Size must be a non-negative value. Value provided: {value}.");
            }
 
            _size = value;
        }
    }
 
    public string ContentType { get; set; } = string.Empty;
 
    public string? RelativePath { get; set; }
 
    public Stream OpenReadStream(long maxAllowedSize = 512000, CancellationToken cancellationToken = default)
    {
        if (Size > maxAllowedSize)
        {
            throw new IOException($"Supplied file with size {Size} bytes exceeds the maximum of {maxAllowedSize} bytes.");
        }
 
        return Owner.OpenReadStream(this, maxAllowedSize, cancellationToken);
    }
}