using Carter;
using MediatR;
using Knot.Shared.Kernel.Constants;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;
using System;

namespace Host.Endpoints;

/// <summary>
/// Регистрация эндпоинтов федерации.
/// </summary>
public sealed class FederationEndpoints : ICarterModule
{
    public void AddRoutes(IEndpointRouteBuilder app)
    {
        var group = app.MapGroup(Routes.ApiFederation);
        
        group.MapPost("/handshake", async ([FromBody] Host.Application.Federation.Commands.HandshakeRequest request, ISender sender, CancellationToken ct) =>
        {
            var result = await sender.Send(new Host.Application.Federation.Commands.HandshakeFederationCommand(request), ct);
            if (result.IsSuccess) return Results.Ok(result.Value);

            if (result.Error.Code == "Unauthorized") return Results.Forbid();
            if (result.Error.Code == Knot.Shared.Kernel.Constants.Errors.DisabledByAdmin) return Results.StatusCode(503);
            
            return Results.BadRequest(new { error = result.Error.Description });
        });
    }
}