using System.Net;
using Microsoft.AspNetCore.HttpOverrides;
using Ocelot.Cache.CacheManager;
using Ocelot.DependencyInjection;
using Ocelot.Middleware;
using Ocelot.Provider.Polly;

var builder = WebApplication.CreateBuilder(args);

// ==============================================================================
builder.Configuration.AddJsonFile("ocelot.json", optional: false, reloadOnChange: true);

builder.Configuration.AddJsonFile(Path.Combine("Config", "system.json"), optional: true);

// ==============================================================================
builder.Services.AddOcelot(builder.Configuration)
    .AddCacheManager(x => x.WithDictionaryHandle())
    .AddPolly();

// ==============================================================================
// ==============================================================================
builder.Services.AddHealthChecks();

// ==============================================================================
// ==============================================================================
builder.Services.Configure<ForwardedHeadersOptions>(options =>
{
    options.ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto;

    options.KnownProxies.Clear();
    options.KnownNetworks.Clear();

    options.KnownProxies.Add(IPAddress.Parse("127.0.0.1"));
    options.KnownProxies.Add(IPAddress.Parse("::1"));         // IPv6

    // options.KnownProxies.Add(IPAddress.Parse("172.17.0.1"));
    // options.KnownProxies.Add(IPAddress.Parse("172.18.0.1"));
    options.KnownProxies.Add(IPAddress.Parse("172.19.0.1"));

});

// ==============================================================================
// ==============================================================================
var app = builder.Build();

// ==============================================================================
// ==============================================================================
app.UseForwardedHeaders();

// ==============================================================================
// ==============================================================================
app.MapHealthChecks("/health");

// ==============================================================================
// ==============================================================================
await app.UseOcelot();

app.Run();