/// <summary>
/// 申请友链
/// </summary>
/// <param name="links"></param>
/// <returns></returns>
public async Task <ActionResult> Apply(Links links)
{
if (!links.Url.MatchUrl())
{
return(ResultData(null, false, "添加失败！链接非法！"));
}
var host = new Uri(links.Url).Host;
if (LinksService.Any(l => l.Url.Contains(host)))
{
return(ResultData(null, false, "添加失败！检测到您的网站已经是本站的友情链接了！"));
}
HttpClient.DefaultRequestHeaders.UserAgent.Add(ProductInfoHeaderValue.Parse("Mozilla/5.0"));
HttpClient.DefaultRequestHeaders.Referrer = new Uri(Request.Scheme + "://" + Request.Host.ToString());
return(await await HttpClient.GetAsync(links.Url).ContinueWith(async t =>
{
if (t.IsFaulted || t.IsCanceled)
{
return ResultData(null, false, "添加失败！检测到您的网站疑似挂了，或者连接到你网站的时候超时，请检查下！");
}
var res = await t;
if (!res.IsSuccessStatusCode)
{
return ResultData(null, false, "添加失败！检测到您的网站疑似挂了！返回状态码为：" + res.StatusCode);
}
var s = await res.Content.ReadAsStringAsync();
if (!s.Contains(Request.Host.Host))
{
return ResultData(null, false, $"添加失败！检测到您的网站上未将本站设置成友情链接，请先将本站主域名：{Request.Host}在您的网站设置为友情链接，并且能够展示后，再次尝试添加即可！");
}
var entry = await LinksService.GetAsync(l => l.Url.Equals(links.Url));
bool b;
if (entry is null)
{
b = LinksService.AddEntitySaved(links) != null;
}
else
{
entry.Url = links.Url;
entry.Except = links.Except;
entry.Name = links.Name;
entry.Recommend = links.Recommend;
b = await LinksService.SaveChangesAsync() > 0;
}
return ResultData(null, b, b ? "添加成功！这可能有一定的延迟，如果没有看到您的链接，请稍等几分钟后刷新页面即可，如有疑问，请联系站长。" : "添加失败！这可能是由于网站服务器内部发生了错误，如有疑问，请联系站长。");
}));
}
