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using MediaBrowser.Controller.Configuration;
using Microsoft.Extensions.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MediaBrowser.Controller.Net;
using MediaBrowser.Model.Globalization;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Extensions;
using MediaBrowser.Controller;
namespace MediaBrowser.WebDashboard.Api
{
public class PackageCreator
{
private readonly IFileSystem _fileSystem;
private readonly ILogger _logger;
private readonly IServerConfigurationManager _config;
private readonly string _basePath;
private IResourceFileManager _resourceFileManager;
public PackageCreator(string basePath, IFileSystem fileSystem, ILogger logger, IServerConfigurationManager config, IResourceFileManager resourceFileManager)
{
_fileSystem = fileSystem;
_logger = logger;
_config = config;
_basePath = basePath;
_resourceFileManager = resourceFileManager;
}
public async Task<Stream> GetResource(string virtualPath,
string mode,
string localizationCulture,
string appVersion)
{
var resourceStream = GetRawResourceStream(virtualPath);
if (resourceStream != null)
{
if (IsFormat(virtualPath, "html"))
{
if (IsCoreHtml(virtualPath))
{
resourceStream = await ModifyHtml(virtualPath, resourceStream, mode, appVersion, localizationCulture).ConfigureAwait(false);
}
}
}
return resourceStream;
}
/// <summary>
/// Determines whether the specified path is HTML.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="format">The format.</param>
/// <returns><c>true</c> if the specified path is HTML; otherwise, <c>false</c>.</returns>
private static bool IsFormat(string path, string format)
{
return Path.GetExtension(path).EndsWith(format, StringComparison.OrdinalIgnoreCase);
}
public bool IsCoreHtml(string path)
{
if (path.IndexOf(".template.html", StringComparison.OrdinalIgnoreCase) != -1)
{
return false;
}
return IsFormat(path, "html");
}
/// <summary>
/// Modifies the HTML by adding common meta tags, css and js.
/// </summary>
/// <returns>Task{Stream}.</returns>
public async Task<Stream> ModifyHtml(string path, Stream sourceStream, string mode, string appVersion, string localizationCulture)
{
var isMainIndexPage = string.Equals(path, "index.html", StringComparison.OrdinalIgnoreCase);
using (sourceStream)
{
string html;
using (var memoryStream = new MemoryStream())
{
await sourceStream.CopyToAsync(memoryStream).ConfigureAwait(false);
var originalBytes = memoryStream.ToArray();
html = Encoding.UTF8.GetString(originalBytes, 0, originalBytes.Length);
if (isMainIndexPage)
{
if (!string.IsNullOrWhiteSpace(localizationCulture))
{
var lang = localizationCulture.Split('-').FirstOrDefault();
html = html.Replace("<html", "<html data-culture=\"" + localizationCulture + "\" lang=\"" + lang + "\"");
}
}
}
if (isMainIndexPage)
{
html = html.Replace("<head>", "<head>" + GetMetaTags(mode));
}
// 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");
html = html.Replace("</script>", "</script>-->");
}
if (isMainIndexPage)
{
html = html.Replace("</body>", GetCommonJavascript(mode, appVersion) + "</body>");
}
var bytes = Encoding.UTF8.GetBytes(html);
return new MemoryStream(bytes);
}
}
/// <summary>
/// Gets the meta tags.
/// </summary>
/// <returns>System.String.</returns>
private 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 string GetCommonJavascript(string mode, string version)
{
var builder = new StringBuilder();
builder.Append("<script>");
if (!string.IsNullOrWhiteSpace(mode))
{
builder.AppendFormat("window.appMode='{0}';", mode);
}
else
{
builder.AppendFormat("window.dashboardVersion='{0}';", version);
}
builder.Append("</script>");
var versionString = string.IsNullOrWhiteSpace(mode) ? "?v=" + version : string.Empty;
var files = new List<string>();
files.Add("scripts/apploader.js" + versionString);
if (string.Equals(mode, "cordova", StringComparison.OrdinalIgnoreCase))
{
files.Insert(0, "cordova.js");
}
var tags = files.Select(s => string.Format("<script src=\"{0}\" defer></script>", s)).ToArray();
builder.Append(string.Join(string.Empty, tags));
return builder.ToString();
}
/// <summary>
/// Gets the raw resource stream.
/// </summary>
private Stream GetRawResourceStream(string virtualPath)
{
return _resourceFileManager.GetResourceFileStream(_basePath, virtualPath);
}
}
}
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