using Microsoft.AspNetCore.Components;
using Prefab.Web.Client.Models.Shared;
using Prefab.Web.Client.Services;

namespace Prefab.Web.Client.Pages;

public abstract class ResultComponentBase<T> : ComponentBase
{
    [Inject]
    protected INotificationService NotificationService { get; set; } = null!;

    protected async Task<Result<T>> Execute(
        Func<CancellationToken, Task<Result<T>>> operation,
        CancellationToken cancellationToken)
    {
        try
        {
            var result = await operation(cancellationToken);

            if (!result.IsSuccess && result.Problem is { } problem)
            {
                var message = string.IsNullOrWhiteSpace(problem.Detail)
                    ? problem.Title ?? "An unexpected error occurred."
                    : problem.Detail;

                NotificationService.ShowError(message);
            }

            return result;
        }
        catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
        {
            throw;
        }
        catch (Exception exception)
        {
            var problem = ResultProblem.Unexpected("Failed to complete the requested operation.", exception);
            var fallback = problem.Detail ?? problem.Title ?? "Failed to complete the requested operation.";
            NotificationService.ShowError(fallback);
            return Result<T>.Failure(problem);
        }
    }
}