PIAPS_CW/WebApp/Pages/TwoFactor.cshtml

@page
@model WebApp.Pages.TwoFactorModel

<div class="row justify-content-center mt-7">
    <style>
        .icon-circle[class*=text-] [fill]:not([fill=none]), .icon-circle[class*=text-] svg:not([fill=none]), .svg-icon[class*=text-] [fill]:not([fill=none]), .svg-icon[class*=text-] svg:not([fill=none]) {
            fill: currentColor !important;
        }

        .svg-icon-xl > svg {
            width: 3.25rem;
            height: 3.25rem;
        }

        .hover-lift-light {
            transition: box-shadow .25s ease,transform .25s ease,color .25s ease,background-color .15s ease-in;
        }

        .mt-4 {
            margin-top: 1.5rem !important;
        }

        .w-100 {
            width: 100% !important;
        }

        .btn-group-lg > .btn, .btn-lg {
            padding: 0.8rem 1.85rem;
            font-size: 1.1rem;
            border-radius: 0.3rem;
        }

        .btn-purple {
            color: #fff;
            background-color: #6672e8;
            border-color: #6672e8;
        }

        .text-center {
            text-align: center !important;
        }

        .py-4 {
            padding-top: 1.5rem !important;
            padding-bottom: 1.5rem !important;
        }

        .form-control-lg {
            min-height: calc(1.5em + 1rem + 2px);
            padding: 0.5rem 1rem;
            font-size: 1.25rem;
            border-radius: 0.3rem;
        }

        .form-control {
            display: block;
            width: 100%;
            padding: 0.375rem 0.75rem;
            font-size: 1rem;
            font-weight: 400;
            line-height: 1.5;
            color: #1e2e50;
            background-color: #f6f9fc;
            background-clip: padding-box;
            border: 1px solid #dee2e6;
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            border-radius: 0.25rem;
            transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
        }
    </style>
    <div class="col-lg-5 text-center">
        <a href="index.html">
            <img src="assets/img/svg/logo.svg" alt="">
        </a>
        <div class="card mt-5">
            <div class="card-body py-5 px-lg-5">
                <div class="svg-icon svg-icon-xl text-purple">
                    <svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="0 0 512 512"><title>ionicons-v5-g</title><path d="M336,208V113a80,80,0,0,0-160,0v95" style="fill:none;stroke:#000;stroke-linecap:round;stroke-linejoin:round;stroke-width:32px"></path><rect x="96" y="208" width="320" height="272" rx="48" ry="48" style="fill:none;stroke:#000;stroke-linecap:round;stroke-linejoin:round;stroke-width:32px"></rect></svg>
                </div>
                <h3 class="fw-normal text-dark mt-4">
                    2-step verification
                </h3>
                <p class="mt-4 mb-1">
                    We sent a verification code to your email.
                </p>
                <p>
                    Please enter the code in the field below.
                </p>
                <form method="post">
                    <div class="row mt-4 pt-2">
                        <div class="col">
                            <input type="text" maxlength="1" id="code1" class="form-control form-control-lg text-center py-4" 
                                name="code" required autofocus>
                        </div>
                        <div class="col">
                            <input type="text" maxlength="1" id="code2" class="form-control form-control-lg text-center py-4"
                                   name="code" required>
                        </div>
                        <div class="col">
                            <input type="text" maxlength="1" id="code3" class="form-control form-control-lg text-center py-4"
                                   name="code" required>
                        </div>
                        <div class="col">
                            <input type="text" maxlength="1" id="code4" class="form-control form-control-lg text-center py-4"
                                   name="code" required>
                        </div>
                        <div class="col">
                            <input type="text" maxlength="1" id="code5" class="form-control form-control-lg text-center py-4"
                                   name="code" required>
                        </div>
                    </div>
                    <button type="submit" class="btn btn-purple btn-lg w-100 hover-lift-light mt-4">
                        Verify my account
                    </button>
                </form>
            </div>
        </div>

        <p class="text-center text-muted mt-4">
            Didn't receive it?
            <a href="#!" class="text-decoration-none ms-2">
                Resend code
            </a>
        </p>
    </div>
</div>

<script>
    // Получаем все поля ввода по их идентификаторам
    var inputs = document.querySelectorAll('#code1, #code2, #code3, #code4, #code5');

    // Функция для обработки события ввода
    function handleInput(event) {
        // Проверяем, достигнут ли максимальный размер поля
        if (event.target.value.length === 1) {
            // Находим следующее поле ввода
            var nextInput = getNextInput(inputs, event.target);
            // Устанавливаем фокус на следующее поле
            if (nextInput) {
                nextInput.focus();
            }
        }
    }

    // Функция для получения следующего поля ввода
    function getNextInput(inputs, currentInput) {
        var currentIndex = Array.from(inputs).indexOf(currentInput);
        return inputs[currentIndex + 1];
    }

    // Добавляем обработчики событий к полям ввода
    inputs.forEach(function (input) {
        input.addEventListener('keyup', handleInput);
    });
</script>