osu/osu.Game/Online/API/APIDownloadRequest.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
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using System.IO;
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using osu.Framework.IO.Network;
namespace osu.Game.Online.API
{
public abstract class APIDownloadRequest : APIRequest
{
private string filename;
/// <summary>
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/// Used to set the extension of the file returned by this request.
/// </summary>
protected virtual string FileExtension { get; } = @".tmp";
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protected override WebRequest CreateWebRequest()
{
var file = Path.GetTempFileName();
File.Move(file, filename = Path.ChangeExtension(file, FileExtension));
var request = new FileWebRequest(filename, Uri);
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request.DownloadProgress += request_Progress;
return request;
}
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private void request_Progress(long current, long total) => API.Schedule(() => Progressed?.Invoke(current, total));
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protected APIDownloadRequest()
{
base.Success += onSuccess;
}
private void onSuccess()
{
Success?.Invoke(filename);
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}
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public event APIProgressHandler Progressed;
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public new event APISuccessHandler<string> Success;
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}
}