using Microsoft.AspNetCore.Authentication.Negotiate;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpOverrides;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Localization;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.OpenApi.Models;
using MP.Prog.Data;
using MP.TaskMan.Services;
using NLog;
using StackExchange.Redis;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text.Json.Serialization;
using System.Threading.Tasks;

namespace MP.Prog
{
    public class Startup
    {
        #region Public Constructors

        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        #endregion Public Constructors

        #region Public Properties

        public IConfiguration Configuration { get; }

        #endregion Public Properties

        #region Public Methods

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            // aggiunt base URL x routing corretto
            app.UsePathBase(Configuration.GetValue<string>("SpecialConf:AppUrl"));

            if (env.IsDevelopment() || env.IsStaging())
            {
                app.UseDeveloperExceptionPage();

                // valido solo in sviluppo
                app.UseSwagger(c =>
                {
                    c.RouteTemplate = "/swagger/{documentName}/swagger.json";
                });
                app.UseSwaggerUI(c =>
                {
                    c.SwaggerEndpoint("v1/swagger.json", "MP-PROG.Api");
                });
            } 

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                //app.UseMigrationsEndPoint();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            // cultura IT...
            var supportedCultures = new[]{
                new CultureInfo("it-IT")
            };
            app.UseRequestLocalization(new RequestLocalizationOptions
            {
                DefaultRequestCulture = new RequestCulture("it-IT"),
                SupportedCultures = supportedCultures,
                FallBackToParentCultures = false
            });
            CultureInfo.DefaultThreadCurrentCulture = CultureInfo.CreateSpecificCulture("it-IT");

            //// Registrazione Elmah:
            //// https://github.com/ElmahCore/ElmahCore
            //app.UseElmah();

            // fix forwarders
            app.UseForwardedHeaders(new ForwardedHeadersOptions
            {
                ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
            });

            //app.UseAuthentication();

            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseRouting();

            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
                endpoints.MapBlazorHub();
                //endpoints.MapHealthChecksUI();
                //endpoints.MapHealthChecks("/health", new HealthCheckOptions
                //{
                //    Predicate = _ => true,
                //    ResponseWriter = UIResponseWriter.WriteHealthCheckUIResponse
                //});
                endpoints.MapFallbackToPage("/_Host");
            });
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();
            services.AddSwaggerGen(c =>
                {
                    c.SwaggerDoc("v1", new OpenApiInfo { Title = "MP-PROG.Api", Version = "v1" });
                    // Set the comments path for the Swagger JSON and UI.
                    var xmlPath = Path.Combine(AppContext.BaseDirectory, $"{Assembly.GetExecutingAssembly().GetName().Name}.xml");
                    c.IncludeXmlComments(xmlPath); 
                }); 
            // Aggiunta auth windows
            services.AddAuthentication(NegotiateDefaults.AuthenticationScheme)
               .AddNegotiate();

            services.AddAuthorization(options =>
            {
                // By default, all incoming requests will be authorized according to the default policy.
                options.FallbackPolicy = options.DefaultPolicy;
            });


            // cookie applicazione da 14 gg (defaul) a 30
            services.ConfigureApplicationCookie(o =>
            {
                o.ExpireTimeSpan = TimeSpan.FromDays(30);
                o.SlidingExpiration = true;
            });

            //// Elmah
            //services.AddElmah();
            //string elmaConn = "Data Source=SQL2016DEV;Initial Catalog=Elmah;User ID=sa;Password=keyhammer16;integrated security=False;MultipleActiveResultSets=True;App=SHERPA.BBM;";
            //services.AddElmah<SqlErrorLog>(options =>
            //{
            //    options.ConnectionString = elmaConn;
            //});

#if false
            services.AddStackExchangeRedisCache(options =>
                {
                    //options.Configuration = "localhost:6379";
                    options.ConfigurationOptions = new StackExchange.Redis.ConfigurationOptions() { KeepAlive = 180, DefaultDatabase = 5, EndPoints = { { "localhost", 6379 } } };
                    options.InstanceName = "MP:Prog";
                }); 
#endif
            // REDIS setup
            string connStringRedis = Configuration.GetConnectionString("Redis");
            string redisSrvAddr = connStringRedis.Substring(0, connStringRedis.IndexOf(":"));
            // avvio oggetto shared x redis...
            var redisMultiplexer = ConnectionMultiplexer.Connect(connStringRedis);

            services.AddControllers()
               .AddJsonOptions(c => c.JsonSerializerOptions.ReferenceHandler = ReferenceHandler.Preserve);

            services.AddLocalization();

            services.AddRazorPages();
            services.AddServerSideBlazor();

            services.AddSingleton<IConfiguration>(Configuration);
            services.AddSingleton<RestCallService>();
            services.AddSingleton<TaskService>();
            //services.AddSingleton<FileArchDataService>();

            services.AddScoped<FileArchDataService>();
            services.AddScoped<MessageService>();
            services.AddSingleton<IConnectionMultiplexer>(redisMultiplexer);
        }

        #endregion Public Methods
    }
}