using Blazored.LocalStorage;
using Blazored.SessionStorage;
using HealthChecks.UI.Client;
using MagMan.Core;
using MagMan.Core.Services;
using MagMan.Data;
using MagMan.Data.Admin;
using MagMan.Data.Admin.Services;
using MagMan.Data.Tenant;
using MagMan.Data.Tenant.Services;
using MagMan.UI.Areas.Identity;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using Microsoft.AspNetCore.HttpOverrides;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Localization;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Diagnostics.HealthChecks;
using StackExchange.Redis;
using System.Globalization;

var builder = WebApplication.CreateBuilder(args);

// REDIS setup
var redisConnString = builder.Configuration.GetConnectionString("Redis");
string connStringRedis = redisConnString ?? "localhost:6379, DefaultDatabase=14, connectTimeout=5000, syncTimeout=5000, asyncTimeout=5000, abortConnect=false, ssl=false";
string redisSrvAddr = "127.0.0.1";
if (connStringRedis.IndexOf(":") >= 0)
{
    redisSrvAddr = connStringRedis.Substring(0, connStringRedis.IndexOf(":"));
}
// avvio oggetto shared x redis...
var redisMultiplexer = ConnectionMultiplexer.Connect(connStringRedis);
// Add services x accesso dati
builder.Services.AddSingleton<IConnectionMultiplexer>(redisMultiplexer);

// init info x DB
string dbServerAddr = builder.Configuration["DbConfig:Server"];
string nKey = builder.Configuration["DbConfig:nKey"];
string sKey = builder.Configuration["DbConfig:sKey"];
MagMan.Data.Admin.DbConfig.InitDb(dbServerAddr);
string admConnStr = MagMan.Data.Admin.DbConfig.CONNECTION_STRING;

// inizializzo il DB e creo (se necessario) l'utente
MagMan.Data.Admin.DbConfig.CheckUser(nKey, sKey);
// migrazione Db x gestione multitenant
MagMan.Data.Admin.DbConfig.ExecMigrationMultiTenant();

string connStringDB = MagMan.Data.Admin.DbConfig.CONNECTION_STRING;

/*
 * Healthchecks
 * vedere qui: https://github.com/Xabaril/AspNetCore.Diagnostics.HealthChecks?tab=readme-ov-file
 * 
 * bug aperto: https://github.com/Xabaril/AspNetCore.Diagnostics.HealthChecks/issues/410, tamponato con conf su kestrel.service: specificato localhost/ip reale prima della porta..
 * 
 * ExecStart=/usr/bin/dotnet /var/www/magman/MagMan.UI.dll --urls "http://10.74.82.92:5005"
 * 
 * */
// abilitazione blobale healthCheck...
bool enabHealth = builder.Configuration.GetValue<bool>("OptConf:EnableHealth");
if (enabHealth)
{
    builder.Services.AddHealthChecks()
        .AddMySql(connStringDB, "MySql instance")
        .AddAsyncCheck($"DB PING ({dbServerAddr})", () => MagMan.UI.Health.Checks.PingCheck(dbServerAddr))
        .AddAsyncCheck($"Redis PING ({redisSrvAddr})", () => MagMan.UI.Health.Checks.PingCheck(redisSrvAddr))
        // 512 MB max allocated memory
        .AddProcessAllocatedMemoryHealthCheck(512, "Max Process memory (<512MB)", failureStatus: HealthStatus.Degraded)
        // 2025.09.23 problemi con sentinel... commentato!
        //.AddRedis(connStringRedis, "Redis", failureStatus: HealthStatus.Degraded)
        //.AddRedis(builder.Configuration.GetConnectionString("Redis"), "Redis", failureStatus: HealthStatus.Degraded)
        .AddAsyncCheck($"MySql Identity", () => MagMan.UI.Health.Checks.DbIdentity(MagMan.Data.Admin.DbConfig.DATABASE_NAME))
        .AddAsyncCheck($"MySql Customers", () => MagMan.UI.Health.Checks.CustomersCount())
        ;

    builder.Services.AddHealthChecksUI(s =>
          {
              s.AddHealthCheckEndpoint("MagMan_Services", "health");
              s.SetEvaluationTimeInSeconds(60);
              s.SetMinimumSecondsBetweenFailureNotifications(120);
              s.SetApiMaxActiveRequests(5);
              s.SetHeaderText("MagMan Health Check Status");
          })
          .AddInMemoryStorage();
}

// cookie applicazione da 14 gg (defaul) a 30
builder.Services.ConfigureApplicationCookie(o =>
{
    o.ExpireTimeSpan = TimeSpan.FromDays(30);
    o.SlidingExpiration = true;
});
// token di sicurezza dati a 3h
builder.Services.Configure<DataProtectionTokenProviderOptions>(o =>
   o.TokenLifespan = TimeSpan.FromHours(3));



// setup MySql
var serverVersion = MagMan.Data.Admin.DbConfig.MysqlServerVersion(admConnStr);
builder.Services.AddDbContext<IdentityContext>(options =>
                options.UseMySql(connStringDB, serverVersion));

builder.Services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
                .AddRoles<IdentityRole>()
                .AddEntityFrameworkStores<IdentityContext>();

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();


// servizi dati
builder.Services.AddSingleton<TenantService>();
builder.Services.AddScoped<MessageService>();
builder.Services.AddScoped<MTAdminService>();
builder.Services.AddBlazoredLocalStorage();
builder.Services.AddBlazoredSessionStorage();

// gestione email
builder.Services.Configure<MailKitMailSettings>(builder.Configuration.GetSection(nameof(MailKitMailSettings)));
builder.Services.AddScoped<MailService>();

builder.Services.AddHttpContextAccessor();



// servizi auth
builder.Services.AddScoped<AuthenticationStateProvider, RevalidatingIdentityAuthenticationStateProvider<IdentityUser>>();

#if false
builder.Services.AddDatabaseDeveloperPageExceptionFilter();
# endif

builder.Services.AddSingleton<IConfiguration>(builder.Configuration);



var app = builder.Build();

// aggiunt base URL x routing corretto
app.UsePathBase(builder.Configuration["OptConf:BaseUrl"]);

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    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();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

// 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");

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

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

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


app.Run();