/// <summary>
/// This function bundles CSS, JavaScript, and Images into a single html file
/// </summary>
/// <param name="inputPath">The path of the main html file</param>
/// <returns>A WebFile containg the bundle</returns>
private WebFile Bundle(String inputPath)
{
var inputFile = new WebFile(inputPath);
var outputFile = inputFile;
//Adding Font and Images to 2nd Layer
foreach (var f in inputFile.DependencyList.Where(x => x.DependencyList.Any()))
{
foreach (var d in f.DependencyList)
{
f.Body = f.Body.Replace(d.ReferenceUri, d.DataUri);
}
}
//Bundling 1st Layer Text-Based (JS and CSS)
var html = inputFile.Body;
var css = BundleDependenciesByType(inputFile.DependencyList, "css");
var js = BundleDependenciesByType(inputFile.DependencyList, "javascript");
//Optimization
if (OptimizeHtml != null)
{
html = OptimizeHtml(html);
}
if (OptimizeCss != null)
{
css = OptimizeCss(css);
}
if (OptimizeJs != null)
{
js = OptimizeJs(js);
}
//Remove Imported dependency nodes
foreach (var dependency in inputFile.DependencyList.Where(x => (x.MimeType.Contains("css") || x.MimeType.Contains("javascript"))))
{
WebFileUtilities.RemoveReferenceNodes(ref html, dependency.ReferenceUri);
}
//Add Images to HTML file
html = inputFile.DependencyList.Where(x => (!x.MimeType.Contains("css") || !x.MimeType.Contains("javascript")))
.Aggregate(html, (current, d) => current.Replace(d.ReferenceUri, d.DataUri));
WebFileUtilities.InsertNode(ref html, "head", "style", css); //Add Styles
WebFileUtilities.InsertNode(ref html, "body", "script", js); //Add Scripts
outputFile.Body = html;
return(outputFile);
}
/// <summary>
/// Populates dependency list with Webfiles from the references in the body of the file passed in
/// </summary>
/// <param name="bodyString">The body content of the file</param>
/// <returns>A list of WebFiles</returns>
private IList <WebFile> GetDependencies(String bodyString)
{
var dependencyList = new List <WebFile>();
IEnumerable <string> references = null;
switch (MimeType)
{
case "text/html":
references = WebFileUtilities.GetHtmlReferences(bodyString);
break;
case "text/css":
references = WebFileUtilities.GetCssReferences(bodyString);
break;
}
if (references != null)
{
dependencyList.AddRange(GetValidWebFiles(references));
}
return(dependencyList);
}
/// <summary>
/// Checks a list of Uri if the physical files exist. If they exist a matching webfile is created.
/// </summary>
/// <param name="uriList">Enumerable List of URIs</param>
/// <returns>Enumerable List of Validated Webfiles</returns>
private IEnumerable <WebFile> GetValidWebFiles(IEnumerable <string> uriList)
{
return(uriList.Select(uri => new { Path = WebFileUtilities.GetFullPathFromUri(_basePath, uri), Uri = uri })
.Where(reference => File.Exists(reference.Path))
.Select(reference => new WebFile(reference.Path, reference.Uri)));
}
