public async Task <GitHubRelease> GetReleaseAsync(string releaseId = "latest")
{
if (string.IsNullOrWhiteSpace(Repository))
{
throw new ArgumentException($"{nameof(Repository)} cannot be null or white space as it is used by GitHub to allow API calls through. See https://developer.github.com/v3/#user-agent-required");
}
var apiUrl = GetReleaseApiUrl(releaseId);
_httpClient.DefaultRequestHeaders.Accept.Clear();
// https://developer.github.com/v3/#user-agent-required
_httpClient.DefaultRequestHeaders.Add("User-Agent", Repository);
var jsonString = await _httpClient.GetStringAsync(apiUrl);
return(GitHubRelease.CreateFromJson(jsonString));
}
private async void CheckForUpdateAsync(object state)
{
if (!(state is CheckForUpdateParams))
{
throw new ArgumentException($"{nameof(state)} must be of type {nameof(CheckForUpdateParams)} (current is {state.GetType().Name})");
}
var args = (CheckForUpdateParams)state;
try
{
var release = await GetReleaseAsync();
if (args.CurrentVersion != release.Version)
{
args.Callback?.Invoke(release);
UpdateUrl = release.HtmlUrl;
UpdateAvailable = true;
Update = release;
}
else
{
UpdateUrl = null;
UpdateAvailable = false;
Update = null;
}
LastChecked = DateTime.Now;
}
catch (Exception e)
{
// If the handler is defined, invoke it, otherwise silently swallow these exceptions
UnhandledException?.Invoke(this, e);
}
}