private static string InsertStrategyOptions(string javascriptString, PwaOptions options)
{
return(javascriptString
.Replace("{version}", options.CacheId + "::" + options.Strategy)
.Replace("{routes}", string.Join(",", options.RoutesToPreCache.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(r => "'" + r.Trim() + "'")))
.Replace("{offlineRoute}", options.BaseRoute + options.OfflineRoute)
.Replace("{ignoreRoutes}", string.Join(",", options.RoutesToIgnore.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(r => "'" + r.Trim() + "'"))));
}
public ServiceWorkerTagHelperComponent(IWebHostEnvironment env, IHttpContextAccessor accessor, PwaOptions options)
{
_env = env;
_accessor = accessor;
_options = options;
_script = "\r\n\t<script" + (_options.EnableCspNonce ? Constants.CspNonce : string.Empty) + ">'serviceWorker'in navigator&&navigator.serviceWorker.register('" + options.BaseRoute + Constants.ServiceworkerRoute + "', { scope: '" + options.BaseRoute + "/' })</script>";
}
private static async Task WebManifestHandlerAsync(HttpContext context, PwaOptions options)
{
var wm = context.RequestServices.GetService <WebManifest>();
if (wm == null)
{
throw new BadHttpRequestException("", 404);
}
context.Response.ContentType = "application/manifest+json; charset=utf-8";
context.Response.Headers[HeaderNames.CacheControl] = $"max-age={options.WebManifestCacheControlMaxAge}";
await context.Response.WriteAsync(wm.RawJson);
}
private static async Task ServiceWorkerHandlerAsync(HttpContext context, PwaOptions options, RetrieveCustomServiceworker customServiceworker)
{
context.Response.ContentType = "application/javascript; charset=utf-8";
context.Response.Headers[HeaderNames.CacheControl] = $"max-age={options.ServiceWorkerCacheControlMaxAge}";
if (options.Strategy == ServiceWorkerStrategy.CustomStrategy)
{
string js = customServiceworker.GetCustomServiceworker(options.CustomServiceWorkerStrategyFileName);
await context.Response.WriteAsync(InsertStrategyOptions(js, options));
}
else
{
string fileName = options.Strategy + ".js";
Assembly assembly = typeof(ApplicationBuilderExtensions).Assembly;
Stream resourceStream = assembly.GetManifestResourceStream($"WebEssentials.AspNetCore.Pwa.ServiceWorker.Files.{fileName}");
using (var reader = new StreamReader(resourceStream))
{
string js = await reader.ReadToEndAsync();
await context.Response.WriteAsync(InsertStrategyOptions(js, options));
}
}
}
/// <summary>
/// Creates an instance of the controller.
/// </summary>
public PwaController(PwaOptions options)
{
_options = options;
}
public WebmanifestTagHelperComponent(PwaOptions options, IServiceProvider serviceProvider)
{
_options = options;
_link = "\t<link rel=\"manifest\" href=\"" + options.BaseRoute + Constants.WebManifestRoute + "\" />\r\n";
_serviceProvider = serviceProvider;
}
public WebmanifestTagHelperComponent(PwaOptions options, IServiceProvider serviceProvider)
{
_options = options;
_serviceProvider = serviceProvider;
}
/// <summary>
/// Creates an instance of the controller.
/// </summary>
public PwaController(PwaOptions options, RetrieveCustomServiceworker customServiceworker)
{
_options = options;
_customServiceworker = customServiceworker;
}
public ServiceWorkerTagHelperComponent(IHostingEnvironment env, IHttpContextAccessor accessor, PwaOptions options)
{
_env = env;
_accessor = accessor;
_options = options;
}
