using Grand.Infrastructure;
using Grand.Infrastructure.Configuration;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Rewrite;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Grand.Web.Common.Startup;

/// <summary>
///     Represents object for the configuring/load url rewrite rules from external file on application startup
/// </summary>
public class UrlRewriteStartup : IStartupApplication
{
    /// <summary>
    ///     Add and configure any of the middleware
    /// </summary>
    /// <param name="services">Collection of service descriptors</param>
    /// <param name="configuration">Configuration root of the application</param>
    public void ConfigureServices(IServiceCollection services, IConfiguration configuration)
    {
    }

    /// <summary>
    ///     Configure the using of added middleware
    /// </summary>
    /// <param name="application">Builder for configuring an application's request pipeline</param>
    /// <param name="webHostEnvironment">WebHostEnvironment</param>
    public void Configure(IApplicationBuilder application, IWebHostEnvironment webHostEnvironment)
    {
        var serviceProvider = application.ApplicationServices;
        var urlConfig = serviceProvider.GetRequiredService<UrlRewriteConfig>();
        var urlRewriteOptions = new RewriteOptions();
        var rewriteOptions = false;
        if (urlConfig.UseUrlRewrite)
            if (File.Exists("App_Data/UrlRewrite.xml"))
            {
                using var streamReader = File.OpenText("App_Data/UrlRewrite.xml");
                rewriteOptions = true;
                urlRewriteOptions.AddIISUrlRewrite(streamReader);
            }

        if (urlConfig.UrlRewriteHttpsOptions)
        {
            rewriteOptions = true;
            urlRewriteOptions.AddRedirectToHttps(urlConfig.UrlRewriteHttpsOptionsStatusCode,
                urlConfig.UrlRewriteHttpsOptionsPort);
        }

        if (urlConfig.UrlRedirectToHttpsPermanent)
        {
            rewriteOptions = true;
            urlRewriteOptions.AddRedirectToHttpsPermanent();
        }

        if (rewriteOptions)
            application.UseRewriter(urlRewriteOptions);
    }

    /// <summary>
    ///     Gets order of this startup configuration implementation
    /// </summary>
    public int Priority => -50;

    public bool BeforeConfigure => true;
}