using System.Net;
using Microsoft.AspNetCore.Mvc;

namespace StellaOps.Policy.Gateway.Clients;

internal sealed class PolicyEngineResponse<TSuccess>
{
    private PolicyEngineResponse(HttpStatusCode statusCode, TSuccess? value, ProblemDetails? problem, string? location)
    {
        StatusCode = statusCode;
        Value = value;
        Problem = problem;
        Location = location;
    }

    public HttpStatusCode StatusCode { get; }

    public TSuccess? Value { get; }

    public ProblemDetails? Problem { get; }

    public string? Location { get; }

    public bool IsSuccess => Problem is null && StatusCode is >= HttpStatusCode.OK and < HttpStatusCode.MultipleChoices;

    public static PolicyEngineResponse<TSuccess> Success(HttpStatusCode statusCode, TSuccess? value, string? location)
        => new(statusCode, value, problem: null, location);

    public static PolicyEngineResponse<TSuccess> Failure(HttpStatusCode statusCode, ProblemDetails? problem)
        => new(statusCode, value: default, problem, location: null);
}