btcpayserver/BTCPayServer/Controllers/GreenField/GreenFieldUtils.cs

using System.Collections.Generic;
using BTCPayServer.Client.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ModelBinding;

namespace BTCPayServer.Controllers.GreenField
{
    public static class GreenFieldUtils
    {
        public static IActionResult CreateValidationError(this ControllerBase controller, ModelStateDictionary modelState)
        {
            return controller.UnprocessableEntity(modelState.ToGreenfieldValidationError());
        }

        public static List<GreenfieldValidationError> ToGreenfieldValidationError(this ModelStateDictionary modelState)
        {
            List<GreenfieldValidationError> errors = new List<GreenfieldValidationError>();
            foreach (var error in modelState)
            {
                foreach (var errorMessage in error.Value.Errors)
                {
                    errors.Add(new GreenfieldValidationError(error.Key, errorMessage.ErrorMessage));
                }
            }

            return errors;
        }

        public static IActionResult CreateAPIError(this ControllerBase controller, string errorCode, string errorMessage)
        {
            return controller.BadRequest(new GreenfieldAPIError(errorCode, errorMessage));
        }
        public static IActionResult CreateAPIError(this ControllerBase controller, int httpCode, string errorCode, string errorMessage)
        {
            return controller.StatusCode(httpCode, new GreenfieldAPIError(errorCode, errorMessage));
        }
        public static IActionResult CreateAPIPermissionError(this ControllerBase controller, string missingPermission, string message = null)
        {
            return controller.StatusCode(403, new GreenfieldPermissionAPIError(missingPermission, message));
        }
    }
}