/**
 * @name        nFormat
 * @description validation for input to match given format
 * @author      Joseph Burr
 *
 * Ex: nFormat: '##.#'
 */
(function() {
    $.validator.addMethod('nFormat', function(value, element, format) {
        var halves = format.split('.');
        var exp = format
            .replace(/#\./, '[0-9]?.') // Num before . can be 0-9
            .replace(/^#(#*)/, '([1-9]$1)?') // If starts with # (that is not immediatley before ., 1-9)
            .replace(/\.#/, '(\\.[0-9])?') // If num after ., . is required too
            .replace(/#/g, '[0-9]?'); // Replace all other numbers with optional 0 - 9
        var reg = new RegExp('^' + exp + '$');
        return value.match(reg);
    }, function(format) {
        return 'Value does not match required format ' + format + ' !';
    });
})();

/**
 * @name        range
 * @description validation for input to be within a range
 * @author      Joseph Burr
 *
 * Ex: range: [0, 9] // [min, max]
 */
(function() {
    $.validator.addMethod('rangeSlider', function(value, element, range) {
        var o = range.reduce(function(o, e) {
            var n = e;
            if (typeof e === 'object') n = e.value;
            if (n > o.max || o.max === undefined) o.max = +n;
            if (n < o.min || o.min === undefined) o.min = +n;
            return o;
        }, {});
        return o.min <= +value && +value <= o.max;
    }, function(range) {
        var o = range.reduce(function(o, e) {
            var n = e;
            if (typeof e === 'object') n = e.value;
            if (n > o.max || o.max === undefined) o.max = +n;
            if (n < o.min || o.min === undefined) o.min = +n;
            return o;
        }, {});
        return 'Value must be between ' + o.min + ' - ' + o.max + '.';
    });
})();


/**
 * @name        render
 * @description returns HTML form group with appropriate rules bound
 * @author      Joseph Burr
 *
 *     rules: {// jQuery validation rules}
 *     units: {// Array of units}
 * }
 * Ex: renderValidatedInput({
 *
 *     });
 */
/*
function renderValidatedInput(name, opts) {
    var rules = opts.rules || {};
    var units = opts.units || [];
    var placeholder = name;
    return '' +
        '<div class="form-group">' +
            '<div class="col-xs-12" title="Size">' +
                '<label class="control-label">Size</label>' +
                '<input name="'+name+'" type="text"  class="form-control" placeholder="'+placeholder+'">' +
            '</div>' +
        '</div>';
}
*/