using FastEndpoints;
using FastEndpoints.Swagger;
using SpaceGame.Api.Universe.Scenario;
using SpaceGame.Api.Universe.Bootstrap;
using SpaceGame.Api.Universe.Simulation;

var builder = WebApplication.CreateBuilder(args);
const string StartupScenarioPath = "scenarios/empty.json";

builder.Services.AddCors((options) =>
{
    options.AddDefaultPolicy((policy) =>
    {
        policy
        .AllowAnyHeader()
        .AllowAnyMethod()
        .AllowAnyOrigin();
    });
});
builder.Services
  .AddOptions<StaticDataOptions>()
  .Bind(builder.Configuration.GetSection("StaticData"))
  .Validate(options => !string.IsNullOrWhiteSpace(options.DataRoot), "StaticData:DataRoot must be configured.")
  .PostConfigure(options =>
  {
      if (Path.IsPathRooted(options.DataRoot))
      {
          options.DataRoot = Path.GetFullPath(options.DataRoot);
          return;
      }

      var candidatePaths = new[]
      {
          Path.GetFullPath(options.DataRoot),
          Path.GetFullPath(Path.Combine(builder.Environment.ContentRootPath, options.DataRoot)),
          Path.GetFullPath(Path.Combine(builder.Environment.ContentRootPath, "..", "..", options.DataRoot)),
      };

      var resolvedPath = candidatePaths.FirstOrDefault(Directory.Exists);
      if (resolvedPath is null)
      {
          throw new InvalidOperationException($"StaticData:DataRoot '{options.DataRoot}' could not be resolved to an existing directory.");
      }

      options.DataRoot = resolvedPath;
  })
  .ValidateOnStart();
builder.Services.Configure<BalanceOptions>(builder.Configuration.GetSection("Balance"));
builder.Services.Configure<WorldGenerationOptions>(builder.Configuration.GetSection("WorldGeneration"));
builder.Services.Configure<OrbitalSimulationOptions>(builder.Configuration.GetSection("OrbitalSimulation"));

builder.Services.AddSingleton<IBalanceService, BalanceService>();
builder.Services.AddTransient<SystemGenerationService>();
builder.Services.AddTransient<SpatialBuilder>();
builder.Services.AddTransient<WorldSeedingService>();
builder.Services.AddTransient<ScenarioValidationService>();
builder.Services.AddTransient<ScenarioContentBuilder>();
builder.Services.AddTransient<ScenarioLoader>();
builder.Services.AddTransient<WorldTopologyBuilder>();
builder.Services.AddTransient<WorldRuntimeAssembler>();
builder.Services.AddTransient<WorldBuilder>();
builder.Services.AddSingleton<IStaticDataProvider, StaticDataProvider>();
builder.Services.AddSingleton<WorldService>();
builder.Services.AddSingleton<TelemetryService>();
builder.Services.AddHostedService<SimulationHostedService>();

builder.Services.AddFastEndpoints();
builder.Services.SwaggerDocument();

var app = builder.Build();
app.Services.GetRequiredService<WorldService>().LoadFromScenario(StartupScenarioPath);

app.UseCors();
app.UseFastEndpoints();
app.UseSwaggerGen();

app.Run();