<?php

use MintyPHP\Http\Input\FormErrors;
use MintyPHP\Http\Input\RequestInput;
use MintyPHP\Http\Input\RequestInputFactory;
use MintyPHP\Support\Flash;

function requestInput(): RequestInput
{
    static $requestInput = null;
    if ($requestInput instanceof RequestInput) {
        return $requestInput;
    }

    $factory = app(RequestInputFactory::class);
    $requestInput = $factory->create();
    return $requestInput;
}

function formErrors(): FormErrors
{
    return new FormErrors();
}

function formErrorsFrom(array|FormErrors $errors): FormErrors
{
    return formErrors()->merge($errors);
}

function flashFormErrors(FormErrors $errors, ?string $scope = null, string $keyPrefix = 'form_error'): void
{
    $index = 0;
    foreach ($errors->toFlatList() as $message) {
        $key = $keyPrefix . '_' . $index;
        Flash::error((string) $message, $scope, $key);
        $index++;
    }
}