mirror of https://github.com/ppy/osu
52 lines
1.5 KiB
C#
52 lines
1.5 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.IO;
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using osu.Framework.IO.Network;
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namespace osu.Game.Online.API
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{
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public abstract class APIDownloadRequest : APIRequest
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{
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private string filename;
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/// <summary>
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/// Used to set the extension of the file returned by this request.
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/// </summary>
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protected virtual string FileExtension { get; } = @".tmp";
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protected APIDownloadRequest()
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{
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base.Success += () => Success?.Invoke(filename);
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}
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protected override WebRequest CreateWebRequest()
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{
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string file = Path.GetTempFileName();
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File.Move(file, filename = Path.ChangeExtension(file, FileExtension));
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var request = new FileWebRequest(filename, Uri);
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request.DownloadProgress += request_Progress;
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return request;
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}
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private void request_Progress(long current, long total) => API.Schedule(() => Progressed?.Invoke(current, total));
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protected void TriggerSuccess(string filename)
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{
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if (this.filename != null)
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throw new InvalidOperationException("Attempted to trigger success more than once");
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this.filename = filename;
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TriggerSuccess();
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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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}
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}
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