/// <summary>
/// Creates a new instance of <see cref="RemoteMasterPageHtmlProvider"/>
/// </summary>
/// <param name="masterPageControlUrl">The URL from which to download the remote HTML, with {0} where the <c>controlId</c> should be inserted</param>
/// <param name="httpClientProvider">Strategy to get the HttpClient instance used for requests.</param>
/// <param name="userAgent">The user agent to use when requesting the remote HTML (usually the user agent for the consuming request)</param>
/// <param name="cacheProvider">Strategy for caching the remote HTML.</param>
/// <param name="forceCacheRefresh"><c>true</c> to ensure the HTML is requested from the remote URL, not from a local cache</param>
public RemoteMasterPageHtmlProvider(Uri masterPageControlUrl, IHttpClientProvider httpClientProvider, string userAgent, IRemoteMasterPageCacheProvider cacheProvider, bool forceCacheRefresh = false)
{
_masterPageControlUrl = masterPageControlUrl ?? throw new ArgumentNullException(nameof(masterPageControlUrl));
_httpClientProvider = httpClientProvider ?? throw new ArgumentNullException(nameof(httpClientProvider));
_userAgent = userAgent;
_cacheProvider = cacheProvider;
_forceCacheRefresh = forceCacheRefresh;
}
/// <summary>
/// Creates a new instance of <see cref="RemoteMasterPageHtmlProvider"/>
/// </summary>
/// <param name="remoteMasterPageSettings">Settings for fetching and caching the remote master page controls</param>
/// <param name="httpContextAccessor">A method of getting the web request which requires a response with the template applied.</param>
/// <param name="httpClientProvider">A method of getting an <c>HttpClient</c> to connect to remote resources.</param>
/// <param name="cacheProvider">Strategy for caching the remote HTML.</param>
public RemoteMasterPageHtmlProvider(IOptions <RemoteMasterPageSettings> remoteMasterPageSettings, IHttpContextAccessor httpContextAccessor, IHttpClientProvider httpClientProvider, IRemoteMasterPageCacheProvider cacheProvider)
{
if (remoteMasterPageSettings == null || remoteMasterPageSettings.Value == null)
{
throw new ArgumentNullException(nameof(remoteMasterPageSettings));
}
var request = httpContextAccessor?.HttpContext?.Request ?? throw new ArgumentNullException(nameof(httpContextAccessor));
var queryString = HttpUtility.ParseQueryString(request.QueryString.Value);
_masterPageControlUrl = remoteMasterPageSettings.Value.PartialViewUrl;
_httpClientProvider = httpClientProvider;
_userAgent = request.Headers["User-Agent"].ToString();
_cacheProvider = cacheProvider;
_cacheProvider.CacheDuration = TimeSpan.FromMinutes(remoteMasterPageSettings.Value.CacheMinutes);
_forceCacheRefresh = (queryString["ForceCacheRefresh"] == "1"); // Provide a way to force an immediate update of the cache;
}
