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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Net;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Updates;
namespace MediaBrowser.Common.Implementations.Updates
{
public class GithubUpdater
{
private readonly IHttpClient _httpClient;
private readonly IJsonSerializer _jsonSerializer;
private TimeSpan _cacheLength;
public GithubUpdater(IHttpClient httpClient, IJsonSerializer jsonSerializer, TimeSpan cacheLength)
{
_httpClient = httpClient;
_jsonSerializer = jsonSerializer;
_cacheLength = cacheLength;
}
public async Task<CheckForUpdateResult> CheckForUpdateResult(string organzation, string repository, Version minVersion, PackageVersionClass updateLevel, string assetFilename, string packageName, string targetFilename, CancellationToken cancellationToken)
{
var url = string.Format("https://api.github.com/repos/{0}/{1}/releases", organzation, repository);
var options = new HttpRequestOptions
{
Url = url,
EnableKeepAlive = false,
CancellationToken = cancellationToken,
UserAgent = "Emby/3.0"
};
if (_cacheLength.Ticks > 0)
{
options.CacheMode = CacheMode.Unconditional;
options.CacheLength = _cacheLength;
}
using (var stream = await _httpClient.Get(options).ConfigureAwait(false))
{
var obj = _jsonSerializer.DeserializeFromStream<RootObject[]>(stream);
return CheckForUpdateResult(obj, minVersion, updateLevel, assetFilename, packageName, targetFilename);
}
}
private CheckForUpdateResult CheckForUpdateResult(RootObject[] obj, Version minVersion, PackageVersionClass updateLevel, string assetFilename, string packageName, string targetFilename)
{
if (updateLevel == PackageVersionClass.Release)
{
// Technically all we need to do is check that it's not pre-release
// But let's addititional checks for -beta and -dev to handle builds that might be temporarily tagged incorrectly.
obj = obj.Where(i => !i.prerelease && !i.name.EndsWith("-beta", StringComparison.OrdinalIgnoreCase) && !i.name.EndsWith("-dev", StringComparison.OrdinalIgnoreCase)).ToArray();
}
else if (updateLevel == PackageVersionClass.Beta)
{
obj = obj.Where(i => !i.prerelease || i.name.EndsWith("-beta", StringComparison.OrdinalIgnoreCase)).ToArray();
}
else if (updateLevel == PackageVersionClass.Dev)
{
obj = obj.Where(i => !i.prerelease || i.name.EndsWith("-beta", StringComparison.OrdinalIgnoreCase) || i.name.EndsWith("-dev", StringComparison.OrdinalIgnoreCase)).ToArray();
}
var availableUpdate = obj
.Select(i => CheckForUpdateResult(i, minVersion, assetFilename, packageName, targetFilename))
.Where(i => i != null)
.OrderByDescending(i => Version.Parse(i.AvailableVersion))
.FirstOrDefault();
return availableUpdate ?? new CheckForUpdateResult
{
IsUpdateAvailable = false
};
}
private CheckForUpdateResult CheckForUpdateResult(RootObject obj, Version minVersion, string assetFilename, string packageName, string targetFilename)
{
Version version;
if (!Version.TryParse(obj.tag_name, out version))
{
return null;
}
if (version < minVersion)
{
return null;
}
var asset = (obj.assets ?? new List<Asset>()).FirstOrDefault(i => IsAsset(i, assetFilename));
if (asset == null)
{
return null;
}
return new CheckForUpdateResult
{
AvailableVersion = version.ToString(),
IsUpdateAvailable = version > minVersion,
Package = new PackageVersionInfo
{
classification = obj.prerelease ?
(obj.name.EndsWith("-dev", StringComparison.OrdinalIgnoreCase) ? PackageVersionClass.Dev : PackageVersionClass.Beta) :
PackageVersionClass.Release,
name = packageName,
sourceUrl = asset.browser_download_url,
targetFilename = targetFilename,
versionStr = version.ToString(),
requiredVersionStr = "1.0.0",
description = obj.body,
infoUrl = obj.html_url
}
};
}
private bool IsAsset(Asset asset, string assetFilename)
{
var downloadFilename = Path.GetFileName(asset.browser_download_url) ?? string.Empty;
if (downloadFilename.IndexOf(assetFilename, StringComparison.OrdinalIgnoreCase) != -1)
{
return true;
}
return string.Equals(assetFilename, downloadFilename, StringComparison.OrdinalIgnoreCase);
}
public class Uploader
{
public string login { get; set; }
public int id { get; set; }
public string avatar_url { get; set; }
public string gravatar_id { get; set; }
public string url { get; set; }
public string html_url { get; set; }
public string followers_url { get; set; }
public string following_url { get; set; }
public string gists_url { get; set; }
public string starred_url { get; set; }
public string subscriptions_url { get; set; }
public string organizations_url { get; set; }
public string repos_url { get; set; }
public string events_url { get; set; }
public string received_events_url { get; set; }
public string type { get; set; }
public bool site_admin { get; set; }
}
public class Asset
{
public string url { get; set; }
public int id { get; set; }
public string name { get; set; }
public object label { get; set; }
public Uploader uploader { get; set; }
public string content_type { get; set; }
public string state { get; set; }
public int size { get; set; }
public int download_count { get; set; }
public string created_at { get; set; }
public string updated_at { get; set; }
public string browser_download_url { get; set; }
}
public class Author
{
public string login { get; set; }
public int id { get; set; }
public string avatar_url { get; set; }
public string gravatar_id { get; set; }
public string url { get; set; }
public string html_url { get; set; }
public string followers_url { get; set; }
public string following_url { get; set; }
public string gists_url { get; set; }
public string starred_url { get; set; }
public string subscriptions_url { get; set; }
public string organizations_url { get; set; }
public string repos_url { get; set; }
public string events_url { get; set; }
public string received_events_url { get; set; }
public string type { get; set; }
public bool site_admin { get; set; }
}
public class RootObject
{
public string url { get; set; }
public string assets_url { get; set; }
public string upload_url { get; set; }
public string html_url { get; set; }
public int id { get; set; }
public string tag_name { get; set; }
public string target_commitish { get; set; }
public string name { get; set; }
public bool draft { get; set; }
public Author author { get; set; }
public bool prerelease { get; set; }
public string created_at { get; set; }
public string published_at { get; set; }
public List<Asset> assets { get; set; }
public string tarball_url { get; set; }
public string zipball_url { get; set; }
public string body { get; set; }
}
}
}
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