using System.Net;
using System.Reflection;
using Microsoft.AspNetCore.HttpOverrides;
using Microsoft.OpenApi.Models;
using rmutr_report.Models;
using IPNetwork = Microsoft.AspNetCore.HttpOverrides.IPNetwork;

var builder = WebApplication.CreateBuilder(args);

var configuration = builder.Configuration;
var setting = new Setting
{
    report_path = configuration["Settings:ReportPath"]
};
builder.Services.AddSingleton(setting);

builder.Services.AddControllers();

builder.Services.AddCors(options =>
{
    options.AddPolicy("AllowAllOrigins", policy =>
    {
        policy.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod();
    });
});

builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("reports", new OpenApiInfo { Title = "Reports API", Version = "v1" });
    c.SwaggerDoc("graph", new OpenApiInfo { Title = "Graph API", Version = "v1" });

    var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
    var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
    c.IncludeXmlComments(xmlPath);
    c.EnableAnnotations();
});

var app = builder.Build();

app.UseForwardedHeaders(new ForwardedHeadersOptions
{
    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto,
    KnownNetworks = { new IPNetwork(IPAddress.Any, 0) }
});

app.UseSwagger(c =>
{
    c.RouteTemplate = "swagger/{documentName}/swagger.json";
    c.PreSerializeFilters.Add((swaggerDoc, httpReq) =>
    {
        if (!httpReq.Headers.ContainsKey("X-Forwarded-Host")) return;

        var serverUrl = $"{httpReq.Headers["X-Scheme"]}://" +
                        $"{httpReq.Headers["X-Forwarded-Host"]}" +
                        $"{httpReq.Headers["X-Forwarded-Prefix"]}";
        swaggerDoc.Servers = new List<OpenApiServer> { new OpenApiServer { Url = serverUrl } };
    });
});

app.UseSwaggerUI(c =>
{
    c.SwaggerEndpoint("reports/swagger.json", "Reports API v1");
    c.SwaggerEndpoint("graph/swagger.json", "Graph API v1");
    c.DefaultModelExpandDepth(0);
    c.DefaultModelsExpandDepth(-1);
});

app.UseRouting();
app.UseAuthorization();
app.UseCors("AllowAllOrigins");
app.MapControllers();

app.Run();