/**
 * jQuery plugin to add form validations. 
 *
 * To enable, add class="validate" to the form and add required validations in class to the input elements.
 * Available validations are: required, email, and publish-date.
 *
 * Example:
 *      <form name="create" class="validate">
 *          Username: <input type="text" class="required" name="username" value=""/> <br/>
 *          E-mail: <input type="text" class="required email" name="username" value=""/> <br/>
 *          Password: <input type="text" class="required" name="username" value=""/> <br/>
 *          <input type="submit" name="submit" value="Register"/>
 *      </form>
 */
(function($) {
    

    // validate publish-date to make sure the date is not in future
    jQuery.validator.addMethod("publish-date", function(value, element) { 
            // if it doesn't have even three digits then it can't be a future date      
            var tokens = /(\d{3,})/.exec(value);

            var year = new Date().getFullYear();
            return tokens && tokens[1] && parseInt(tokens[1]) <= year + 1; // allow one year in future.
        }, 
        "Are you sure that's the published date?"
    );

    $.validator.messages.required = "";
    $.validator.messages.email = _("Are you sure that's an email address?");
    

    $.fn.ol_validate = function(options) {
        var defaults = {
            errorClass: "invalid",
            validClass: "success",
            errorElement: "span",
            invalidHandler: function(form, validator) {
                var errors = validator.numberOfInvalids();
                if (errors) {
                    var message = ungettext(
                        "Hang on... you missed a bit. It's highlighted below.",
                        "Hang on...you missed some fields. They're highlighted below.",
                        errors);

                    $("div#contentMsg span").html(message);
                    $("div#contentMsg").show().fadeTo(3000, 1).slideUp();
                    $("span.remind").css("font-weight", "700").css("text-decoration", "underline");
                } else {
                    $("div#contentMsg").hide();
                }
            },
            highlight: function(element, errorClass) {
                $(element).addClass(errorClass);
                $(element.form)
                    .find("label[for=" + element.id + "]")
                    .addClass(errorClass);
            },
            unhighlight: function(element, errorClass) {
                $(element).removeClass(errorClass);
                $(element.form)
                    .find("label[for=" + element.id + "]")
                    .removeClass(errorClass);
            }
        };
        $(this).validate($.extend(defaults, options));
    };

})(jQuery);