public async IAsyncEnumerable <IGameResource> ResolveResourceAsync()
{
var id = VersionInfo.RootVersion ?? VersionInfo.DirName;
var versionJson = GamePathHelper.GetGameJsonPath(BasePath, id);
if (!File.Exists(versionJson))
{
yield break;
}
var fileContent = await File.ReadAllTextAsync(versionJson);
var rawVersionModel = JsonConvert.DeserializeObject <RawVersionModel>(fileContent);
if (rawVersionModel?.Downloads?.Client == null)
{
yield break;
}
var clientDownload = rawVersionModel.Downloads.Client;
var jarPath = GamePathHelper.GetVersionJar(BasePath, id);
var downloadInfo = new VersionJarDownloadInfo
{
CheckSum = clientDownload.Sha1,
FileName = $"{id}.jar",
FileSize = clientDownload.Size,
Path = Path.Combine(BasePath, GamePathHelper.GetGamePath(id)),
Title = $"{id}.jar",
Type = "GameJar",
Uri = clientDownload.Url
};
if (!File.Exists(jarPath))
{
yield return(downloadInfo);
}
else
{
if (string.IsNullOrEmpty(clientDownload.Sha1))
{
yield break;
}
using var hash = SHA1.Create();
var computedHash = await CryptoHelper.ComputeFileHashAsync(jarPath, hash);
if (computedHash.Equals(clientDownload.Sha1, StringComparison.OrdinalIgnoreCase))
{
yield break;
}
try
{
File.Delete(jarPath);
}
catch (Exception)
{
}
yield return(downloadInfo);
}
}
