(function ($) {
    'use strict';

    function normalize(value) {
        if (typeof value !== 'string') {
            return '';
        }

        value = value.replace(/[Ａ-Ｚａ-ｚ]/g, function (ch) {
            return String.fromCharCode(ch.charCodeAt(0) - 65248);
        });
        value = value.toUpperCase();

        return value.replace(/[^A-Zぁ-ゖァ-ヶ一-龠々〆ヵヶー]/g, '');
    }

    $.customerNameNormalizer = {
        normalize: normalize
    };

    $.fn.customerNameNormalizer = function () {
        return this.each(function () {
            var isComposing = false;
            var $input = $(this);

            $input.on('compositionstart', function () {
                isComposing = true;
            });

            $input.on('compositionend', function () {
                isComposing = false;
                this.value = normalize(this.value);
            });

            $input.on('input blur', function () {
                if (isComposing) {
                    return;
                }

                this.value = normalize(this.value);
            });
        });
    };
})(jQuery);