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#pragma warning disable CS1591
using System;
using System.Globalization;
using System.IO;
using System.Text;
using System.Threading.Tasks;
using MediaBrowser.Controller;
namespace MediaBrowser.WebDashboard.Api
{
public class PackageCreator
{
private readonly string _basePath;
private readonly IResourceFileManager _resourceFileManager;
public PackageCreator(string basePath, IResourceFileManager resourceFileManager)
{
_basePath = basePath;
_resourceFileManager = resourceFileManager;
}
public async Task<Stream> GetResource(
string virtualPath,
string mode,
string localizationCulture,
string appVersion)
{
var resourcePath = _resourceFileManager.GetResourcePath(_basePath, virtualPath);
Stream resourceStream = File.OpenRead(resourcePath);
if (resourceStream != null && IsCoreHtml(virtualPath))
{
bool isMainIndexPage = string.Equals(virtualPath, "index.html", StringComparison.OrdinalIgnoreCase);
resourceStream = await ModifyHtml(isMainIndexPage, resourceStream, mode, appVersion, localizationCulture).ConfigureAwait(false);
}
return resourceStream;
}
public static bool IsCoreHtml(string path)
{
if (path.IndexOf(".template.html", StringComparison.OrdinalIgnoreCase) != -1)
{
return false;
}
return string.Equals(Path.GetExtension(path), ".html", StringComparison.OrdinalIgnoreCase);
}
/// <summary>
/// Modifies the source HTML stream by adding common meta tags, css and js.
/// </summary>
/// <param name="isMainIndexPage">True if the stream contains content for the main index page.</param>
/// <param name="sourceStream">The stream whose content should be modified.</param>
/// <param name="mode">The client mode ('cordova', 'android', etc).</param>
/// <param name="appVersion">The application version.</param>
/// <param name="localizationCulture">The localization culture.</param>
/// <returns>
/// A task that represents the async operation to read and modify the input stream.
/// The task result contains a stream containing the modified HTML content.
/// </returns>
public static async Task<Stream> ModifyHtml(
bool isMainIndexPage,
Stream sourceStream,
string mode,
string appVersion,
string localizationCulture)
{
string html;
using (var reader = new StreamReader(sourceStream, Encoding.UTF8))
{
html = await reader.ReadToEndAsync().ConfigureAwait(false);
}
if (isMainIndexPage && !string.IsNullOrWhiteSpace(localizationCulture))
{
var lang = localizationCulture.Split('-')[0];
html = html.Replace("<html", "<html data-culture=\"" + localizationCulture + "\" lang=\"" + lang + "\"", StringComparison.Ordinal);
}
if (isMainIndexPage)
{
html = html.Replace("<head>", "<head>" + GetMetaTags(mode), StringComparison.Ordinal);
}
// Disable embedded scripts from plugins. We'll run them later once resources have loaded
if (html.IndexOf("<script", StringComparison.OrdinalIgnoreCase) != -1)
{
html = html.Replace("<script", "<!--<script", StringComparison.Ordinal);
html = html.Replace("</script>", "</script>-->", StringComparison.Ordinal);
}
if (isMainIndexPage)
{
html = html.Replace("</body>", GetCommonJavascript(mode, appVersion) + "</body>", StringComparison.Ordinal);
}
var bytes = Encoding.UTF8.GetBytes(html);
return new MemoryStream(bytes);
}
/// <summary>
/// Gets the meta tags.
/// </summary>
/// <returns>System.String.</returns>
private static string GetMetaTags(string mode)
{
var sb = new StringBuilder();
if (string.Equals(mode, "cordova", StringComparison.OrdinalIgnoreCase)
|| string.Equals(mode, "android", StringComparison.OrdinalIgnoreCase))
{
sb.Append("<meta http-equiv=\"Content-Security-Policy\" content=\"default-src * 'self' 'unsafe-inline' 'unsafe-eval' data: gap: file: filesystem: ws: wss:;\">");
}
return sb.ToString();
}
/// <summary>
/// Gets the common javascript.
/// </summary>
/// <param name="mode">The mode.</param>
/// <param name="version">The version.</param>
/// <returns>System.String.</returns>
private static string GetCommonJavascript(string mode, string version)
{
var builder = new StringBuilder();
builder.Append("<script>");
if (!string.IsNullOrWhiteSpace(mode))
{
builder.AppendFormat(CultureInfo.InvariantCulture, "window.appMode='{0}';", mode);
}
else
{
builder.AppendFormat(CultureInfo.InvariantCulture, "window.dashboardVersion='{0}';", version);
}
builder.Append("</script>");
if (string.Equals(mode, "cordova", StringComparison.OrdinalIgnoreCase))
{
builder.Append("<script src=\"cordova.js\" defer></script>");
}
builder.Append("<script src=\"scripts/apploader.js");
if (!string.IsNullOrWhiteSpace(version))
{
builder.Append("?v=");
builder.Append(version);
}
builder.Append("\" defer></script>");
return builder.ToString();
}
}
}
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