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using System;
using System.Net.Mime;
using System.Threading.Tasks;
using MediaBrowser.Controller;
using MediaBrowser.Model.Globalization;
using Microsoft.AspNetCore.Http;
namespace Jellyfin.Server.Middleware
{
/// <summary>
/// Shows a custom message during server startup.
/// </summary>
public class ServerStartupMessageMiddleware
{
private readonly RequestDelegate _next;
/// <summary>
/// Initializes a new instance of the <see cref="ServerStartupMessageMiddleware"/> class.
/// </summary>
/// <param name="next">The next delegate in the pipeline.</param>
public ServerStartupMessageMiddleware(RequestDelegate next)
{
_next = next;
}
/// <summary>
/// Executes the middleware action.
/// </summary>
/// <param name="httpContext">The current HTTP context.</param>
/// <param name="serverApplicationHost">The server application host.</param>
/// <param name="localizationManager">The localization manager.</param>
/// <returns>The async task.</returns>
public async Task Invoke(
HttpContext httpContext,
IServerApplicationHost serverApplicationHost,
ILocalizationManager localizationManager)
{
if (serverApplicationHost.CoreStartupHasCompleted
|| httpContext.Request.Path.Equals("/system/ping", StringComparison.OrdinalIgnoreCase))
{
await _next(httpContext).ConfigureAwait(false);
return;
}
var message = localizationManager.GetLocalizedString("StartupEmbyServerIsLoading");
httpContext.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
httpContext.Response.ContentType = MediaTypeNames.Text.Html;
await httpContext.Response.WriteAsync(message, httpContext.RequestAborted).ConfigureAwait(false);
}
}
}
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