/// <summary>
/// Identifies the display type print or web.loads the appropriate xml file and loads the IPageAssemblyInstruction
/// Loads the page template info and provides the complete intructions/assemblyinfo to assemble a page for the requested URL.
/// </summary>
/// <param name="context">httpcontext</param>
/// <param name="url">Requested URL</param>
void RewriteUrl(HttpContext context, string url)
{
DisplayVersions displayVersion = DisplayVersions.Web;
if (url.EndsWith("/")) //The key will never be just / because of the statement above
{
//strip the trailing /
url = url.Substring(0, url.LastIndexOf('/'));
if (string.IsNullOrEmpty(url))
{
url = ContentDeliveryEngineConfig.DefaultHomePage.Homepage;
}
}
//Store the url so it can be rewritten for logging.
context.Items[REQUEST_URL_KEY] = url;
bool isPrint = false;
if (url.EndsWith(PRINT_URL_ENDING))
{
//Do not take a substring if someone is trying to print the homepage
//of the site
if (url != PRINT_URL_ENDING)
{
//Since the pretty url map knows nothing about urls
//that end with print we need to remove /print from
//the key
url = url.Substring(0, url.Length - PRINT_URL_ENDING.Length);
}
else
{
//We know the key for the homepage
//This code does not seem to actually work
//At the very least it should rewrite the url to /?print=1 or whatever
url = "/";
}
//Set the URL to Default home page if the requested url is "/".
if (url == "/")
{
url = ContentDeliveryEngineConfig.DefaultHomePage.Homepage;
}
isPrint = true;
displayVersion = DisplayVersions.Print;
}
//Now check to see if it is the view all. (For MultiPageAssemblyInstructions)
if (url.EndsWith(VIEWALL_URL_ENDING))
{
//Do not take a substring if someone is trying to print the homepage
//of the site
if (url != VIEWALL_URL_ENDING)
{
//Since the pretty url map knows nothing about urls
//that end with print we need to remove /print from
//the key
url = url.Substring(0, url.Length - VIEWALL_URL_ENDING.Length);
}
else
{
//We know the key for the homepage
//This code does not seem to actually work
//At the very least it should rewrite the url to /?print=1 or whatever
url = "/";
}
if (isPrint)
{
displayVersion = DisplayVersions.PrintAll;
}
else
{
displayVersion = DisplayVersions.ViewAll;
}
}
//Handle for Dictionary Print pages AND foia summaries pages.
if (context.Request.Url.Query.Contains("print") && context.Request.Url.Query.Contains("allpages"))
{
displayVersion = DisplayVersions.PrintAll;
}
else if (context.Request.Url.Query.Contains("print"))
{
displayVersion = DisplayVersions.Print;
}
// Set Display version before loading the assembly instructions so it can be accessed in the constructor
PageAssemblyContext.CurrentDisplayVersion = displayVersion;
//Now lookup the url..
IPageAssemblyInstruction assemblyInfo = null;
try
{
//Try to get the assemblyinfo following these rules.
// When depth == 1, and we get an assemblyInfo, then we are looking for
// the full URL that was requested
// When depth == 2, and we get an assemblyInfo, then we are looking for
// either a MPAI, or a SPAI that implements PushState
// When depth >= 3, and we get an assemblyInfo, then we are looking for
// only a SPAI that implements PushState
string currUrlPath = url;
int depth = 1;
while (assemblyInfo == null && currUrlPath != string.Empty)
{
//Load the assembly info from a path/file.
assemblyInfo = PageAssemblyInstructionFactory.GetPageAssemblyInfo(currUrlPath);
//Did not find anything, let's continue.
if (assemblyInfo == null)
{
//Chop off the current path and try again.
currUrlPath = currUrlPath.Substring(0, currUrlPath.LastIndexOf('/'));
// Increment the depth one more time as we continue diving.
depth++;
continue;
}
// We have an MPAI & depth is greater than 2 (e.g. MPAI is /foo and URL is /foo/bar/bazz)
if (assemblyInfo is IMultiPageAssemblyInstruction && depth != 2)
{
assemblyInfo = null;
break;
}
// We have a Single page that is 2 or more levels deep, and does not implement pushstate
// e.g. SPAI is /foo and URL is /foo/bar.
if (
assemblyInfo is SinglePageAssemblyInstruction &&
depth > 1 &&
!assemblyInfo.ImplementsPushState
)
{
assemblyInfo = null;
break;
}
// Good so far, so let's check if it is a MPAI and it has the requested page.
if (assemblyInfo is MultiPageAssemblyInstruction)
{
int index = ((IMultiPageAssemblyInstruction)assemblyInfo).GetPageIndexOfUrl(url);
if (index >= 0)
{
//This url is a page, so set the current index so we can get the page template later.
((IMultiPageAssemblyInstruction)assemblyInfo).SetCurrentPageIndex(index);
assemblyInfo.Initialize();
}
else
{
assemblyInfo = null;
break;
}
}
//By now we have sussed out if we have a PAI or not.
//If we do, then we need to initialize it.
if (assemblyInfo != null)
{
assemblyInfo.Initialize();
}
//Break out of loop.
break;
}
}
catch (Exception ex)
{
string errMessage = "RewriteUrl(): Requested URL: " + context.Items[REQUEST_URL_KEY] + "\nFailed to Create IPageAssemblyInstruction with the XML file Provided.";
log.Error(errMessage, ex);
RaiseErrorPage(errMessage, ex);
return;
}
//Exiting because there is no page assembly instruction for the requested URL.
if (assemblyInfo == null)
{
return;
}
//Load the page template info for the current request
PageTemplateInfo pageTemplateInfo = null;
try
{
pageTemplateInfo = PageTemplateResolver.GetPageTemplateInfo(assemblyInfo.TemplateTheme, assemblyInfo.PageTemplateName, displayVersion);
}
catch (Exception ex)
{
string errMessage = "RewriteUrl(): Requested URL: " + context.Items[REQUEST_URL_KEY] + "\nCannot Load the pageTemplateInfo problem with the PageTemplateConfiguration XML file ";
log.Error(errMessage, ex);
RaiseErrorPage(errMessage, ex);
return;
}
if (pageTemplateInfo == null)
{
string errMessage = "RewriteUrl(): Requested URL: " + context.Items[REQUEST_URL_KEY] + "\nPage Template Not Found";
log.Error(errMessage);
RaiseErrorPage(errMessage, null);
return;
}
//set the page assembly context with the assemblyInfo, dispayVersion and pageTemplateInfo
PageAssemblyContext.Current.InitializePageAssemblyInfo(assemblyInfo, displayVersion, pageTemplateInfo, url);
// Set culture for selected content.
// The language and culture are formatted as xx-yy (eg. "en-us") when a locale is chosen in Percussion.
// The hyphenated four-letter code is then trimmed to a 2-character neutral culture (eg. "en") by the Velocity
// user macros file and is added to the XML file to be published in /PublishedContent/PageInstructions. The
// assemblyInfo object uses the neutral culture (found in the <Language> tag in the XML file) for page assembly.
// The only exception to this is the Chinese language, in which the culture MUST be specified as either
// "zh-hans" (Simplified Chinese) or "zh-hant" (Traditional Chinese). There is no support for a 2-character "zh"
// culture - see http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo(v=vs.90).aspx for
// details. The logic below is a workaround to catch the "zh" and convert it to the full "zh-hans" culture.
if (!string.IsNullOrEmpty(assemblyInfo.Language))
{
if (assemblyInfo.Language == "zh")
{
System.Threading.Thread.CurrentThread.CurrentUICulture = new CultureInfo("zh-hans");
}
else
{
System.Threading.Thread.CurrentThread.CurrentUICulture = new CultureInfo(assemblyInfo.Language);
}
}
string rewriteUrl = PageAssemblyContext.Current.PageTemplateInfo.PageTemplatePath;
// Append original parameters in the request URL
if (!String.IsNullOrEmpty(context.Request.Url.Query))
{
//The query should contain a ?
rewriteUrl += context.Request.Url.Query;
}
//If we are showing the print version then append the print query
//variable
if (isPrint)
{
if (rewriteUrl.Contains("?"))
{
rewriteUrl += "&print=1";
}
else
{
rewriteUrl += "?print=1";
}
}
// Do not reset the client path because it'll break form action url's.
try
{
context.RewritePath(rewriteUrl, false);
}
catch (HttpException ex)
{
string errMessage = "RewriteUrl(): Requested URL: " + context.Items[REQUEST_URL_KEY] + "\nFailed to rewrite URL.";
log.Error(errMessage, ex);
RaiseErrorPage(errMessage, ex);
}
}