/// <summary>
/// Gets the current frontpage settings, attempting to use a cached
/// version without needing any locks, and loading an instance if needed
/// </summary>
/// <returns>The frontpage settings</returns>
public async Task <FrontpageSettings> GetFrontpageSettingsAsync()
{
var tmp = m_frontpageSettings;
if (tmp != null)
{
return(tmp);
}
using (await m_lock.LockAsync())
{
if (m_frontpageSettings != null)
{
return(m_frontpageSettings);
}
return(m_frontpageSettings = await DB.RunInTransactionAsync(db =>
db.SelectItemById <FrontpageSettings>(LinkDatabase.FRONTPAGESETTINGS_KEY)
));
}
}
public async Task <IResult> Put(FrontpageSettings settings)
{
if (settings == null)
{
return(BadRequest);
}
settings.ID = LinkDatabase.FRONTPAGESETTINGS_KEY;
if (settings.Mode == FrontpageMode.Redirect)
{
if (string.IsNullOrWhiteSpace(settings.RedirectUrl))
{
return(Status(BadRequest, "Redirect requires a target url"));
}
if (settings.InternalRedirect && !settings.RedirectUrl.StartsWith("/"))
{
return(Status(BadRequest, "Internal redirect urls must start with a forward slash"));
}
if (settings.InternalRedirect && !System.Uri.IsWellFormedUriString(settings.RedirectUrl, System.UriKind.Relative))
{
return(Status(BadRequest, "Malformed internal redirect url"));
}
if (!settings.InternalRedirect && !System.Uri.IsWellFormedUriString(settings.RedirectUrl, System.UriKind.Absolute))
{
return(Status(BadRequest, "Malformed absolute redirect url"));
}
}
var res = Json(await DB.RunInTransactionAsync(db =>
db.UpdateItem <FrontpageSettings>(settings)
));
await Cache.InvalidateFrontpageSettingsAsync();
return(res);
}
/// <summary>
/// Clears the currently cached instance of the frontpage settings
/// </summary>
/// <returns>An awaitable task</returns>
public async Task InvalidateFrontpageSettingsAsync()
{
using (await m_lock.LockAsync())
m_frontpageSettings = null;
}