var Validator = Class.create();
Validator.prototype = {
    initialize : function(className, error, test, options) {
        if (typeof test === 'function') {
            this.options = $H(options);
            this._test = test;
        } else {
            this.options = $H(test);
            this._test = function() {
                return true;
            };
        }
        this.error = error || 'Validation failed.';
        this.className = className;
    },
    test : function(v, elm) {
        return (this._test(v, elm) && this.options.all(function(p) {
            return Validator.methods[p.key] ? Validator.methods[p.key](v, elm, p.value) : true;
        }));
    }
};
Validator.methods = {
    pattern : function(v, elm, opt) {
        return Validation.get('IsEmpty').test(v) || opt.test(v);
    },
    minLength : function(v, elm, opt) {
        return v.length >= opt;
    },
    maxLength : function(v, elm, opt) {
        return v.length <= opt;
    },
    min : function(v, elm, opt) {
        return v >= parseFloat(opt);
    },
    max : function(v, elm, opt) {
        return v <= parseFloat(opt);
    },
    notOneOf : function(v, elm, opt) {
        return $A(opt).all(function(value) {
            return v !== value;
        });
    },
    oneOf : function(v, elm, opt) {
        return $A(opt).any(function(value) {
            return v === value;
        });
    },
    'is' : function(v, elm, opt) {
        return v === opt;
    },
    isNot : function(v, elm, opt) {
        return v !== opt;
    },
    equalToField : function(v, elm, opt) {
        return v === $F(opt);
    },
    notEqualToField : function(v, elm, opt) {
        return v !== $F(opt);
    },
    include : function(v, elm, opt) {
        return $A(opt).all(function(value) {
            return Validation.get(value).test(v, elm);
        });
    }
};

var Validation = Class.create();

Validation.prototype = {
    initialize : function(form, options) {
        this.options = Object.extend({
            onSubmit : true,
            stopOnFirst : false,
            immediate : false,
            focusOnError : true,
            useTitles : false,
            onFormValidate : function(result, form) {
            },
            onElementValidate : function(result, elm) {
            }
        }, options || {});
        this.form = $(form);
		this.form.validationSucceded = false;
        if (this.options.onSubmit) {
            Event.observe(this.form, 'submit', this.onSubmit.bind(this), false);
        }
        if (this.options.immediate) {
            var useTitles = this.options.useTitles;
            var callback = this.options.onElementValidate;
            Form.getElements(this.form).each(function(input) { // Thanks Mike!
                Event.observe(input, 'blur', function(ev) {
                    Validation.validate(Event.element(ev), {useTitle : useTitles, onElementValidate : callback});
                });
            });
        }
    },
    onSubmit :  function(ev) {
		this.form.validationSucceded = this.validate();
        if (!this.form.validationSucceded) {
            Event.stop(ev);
        }
		this.form.fire("validate:complete");
    },
    validate : function() {
        var result = false;
        var useTitles = this.options.useTitles;
        var callback = this.options.onElementValidate;
        if (this.options.stopOnFirst) {
            result = Form.getElements(this.form).all(function(elm) {
                return Validation.validate(elm, {useTitle : useTitles, onElementValidate : callback});
            });
        } else {
            result = Form.getElements(this.form).collect(function(elm) {
                return Validation.validate(elm, {useTitle : useTitles, onElementValidate : callback});
            }).all();
        }
        if (!result && this.options.focusOnError) {
			try {
				Form.getElements(this.form).findAll(function(elm) {
					return $(elm).hasClassName('validation-failed');
				}).first().focus();
			} catch(e) {
				return true;
			}
        }
        this.options.onFormValidate(result, this.form);
        return result;
    },
    reset : function() {
        Form.getElements(this.form).each(Validation.reset);
    }
};

Object.extend(Validation, {
    validate : function(elm, options) {
        options = Object.extend({
            useTitle : false,
            onElementValidate : function(result, elm) {
            }
        }, options || {});
        elm = $(elm);
        var cn = elm.classNames();
        var result = cn.all(function(value) {
            var test = Validation.test(value, elm, options.useTitle);
            options.onElementValidate(test, elm);
            return test;
        });
        return result;
    },
    test : function(name, elm, useTitle) {
        var v = Validation.get(name);
        var prop = '__advice' + name.camelize();
        try {
			if( elm.hasClassName('validate') || elm.hasClassName('required') ) {				
				Validation.reset(elm);		// reset validation fields to prevent multiple error messages.
				if (Validation.isVisible(elm) && !v.test($F(elm), elm)) {
					if (!elm[prop]) {
						var advice = Validation.getAdvice(name, elm);
						if (advice === null) {
							var errorMsg = useTitle ? ((elm && elm.title) ? elm.title : v.error) : v.error;
							advice = '<div class="validation-advice" id="advice-' + name + '-' + Validation.getElmID(elm) + '">' + errorMsg + '</div>';
							switch (elm.type.toLowerCase()) {
								case 'checkbox':
								case 'radio':
									var p = elm.parentNode;
									if (p) {
										new Insertion.Bottom(p, advice);
									} else {
										new Insertion.After(elm, advice);
									}
									break;
								default:
									new Insertion.After(elm, advice);
							}
							advice = Validation.getAdvice(name, elm);
						}
						if (typeof Effect == 'undefined') {
							advice.style.display = 'block';
						} else {
							new Effect.Appear(advice, {duration : 1 });
						}
					}
					elm[prop] = true;
					elm.removeClassName('validation-passed');
					elm.addClassName('validation-failed');
					return false;
				} else {
					var advice = Validation.getAdvice(name, elm);
					if (advice != null) advice.hide();
					elm[prop] = '';
					elm.removeClassName('validation-failed');
					elm.addClassName('validation-passed');
					return true;
				}
			}
        } catch(e) {
            throw(e);
        }
    },
    isVisible : function(elm) {
        while (elm.tagName != 'BODY') {
            if (!$(elm).visible()) return false;
            elm = elm.parentNode;
        }
        return true;
    },
    getAdvice : function(name, elm) {
        return $('advice-' + name + '-' + Validation.getElmID(elm)) || $('advice-' + Validation.getElmID(elm));
    },
    getElmID : function(elm) {
        return elm.id ? elm.id : elm.name;
    },
    reset : function(elm) {
        elm = $(elm);
        var cn = elm.classNames();
        cn.each(function(value) {
            var prop = '__advice' + value.camelize();
            if (elm[prop]) {
                var advice = Validation.getAdvice(value, elm);
                advice.hide();
                elm[prop] = '';
            }
            elm.removeClassName('validation-failed');
            elm.removeClassName('validation-passed');
        });
    },
    add : function(className, error, test, options) {
        var nv = {};
        nv[className] = new Validator(className, error, test, options);
        Object.extend(Validation.methods, nv);
    },
    addAllThese : function(validators) {
        var nv = {};
        $A(validators).each(function(value) {
            nv[value[0]] = new Validator(value[0], value[1], value[2], (value.length > 3 ? value[3] : {}));
        });
        Object.extend(Validation.methods, nv);
    },
    get : function(name) {
        return  Validation.methods[name] ? Validation.methods[name] : Validation.methods['_LikeNoIDIEverSaw_'];
    },
    methods : {
        '_LikeNoIDIEverSaw_' : new Validator('_LikeNoIDIEverSaw_', '', {})
    }
});

Validation.add('IsEmpty', '', function(v) {
    return  ((v == null) || (v.length == 0)); // || /^\s+$/.test(v));
});


Validation.addAllThese([
    ['required', 'This is a required field.', function(v) {
        return !Validation.get('IsEmpty').test(v);
    }],
    ['phone', 'Please enter a valid phone.', function (v) {
        return Validation.get('IsEmpty').test(v) || /^([\d|\~|\-|\s|\,|\.|\_|\(|\)|\#\+]){10,}((x|ext)([\d|\~|\-|\s|\,|\.|\_|\(|\)|\#])+)?([^a-z\`\!\@\$\%\^\&\*\=\"\?\\\/\;])*$/i.test(v);
    }],
    ['number', 'Please enter a valid number in this field.', function(v) {
        return Validation.get('IsEmpty').test(v) || (!isNaN(v) && !/^\s+$/.test(v));
    }],
    ['digits', 'Please use numbers only in this field. please avoid spaces or other characters such as dots or commas.', function(
            v) {
        return Validation.get('IsEmpty').test(v) || !/[^\d]/.test(v);
    }],
    ['alpha', 'Please use letters only (a-z) in this field.', function (v) {
        return Validation.get('IsEmpty').test(v) || /^[a-zA-Z]+$/.test(v)
    }],
    ['alphanum', 'Please use only letters (a-z) or numbers (0-9) only in this field. No spaces or other characters are allowed.', function(
            v) {
        return Validation.get('IsEmpty').test(v) || !/\W/.test(v)
    }],
    ['date', 'Please enter a valid date.', function(v) {
        //var test = new Date(v);
        //return Validation.get('IsEmpty').test(v) || !isNaN(test);
        if (Validation.get('IsEmpty').test(v)) return true;
        var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
        if (!regex.test(v)) return false;
        var d = new Date(v);
        return ( parseInt(RegExp.$2, 10) == (1 + d.getMonth()) ) &&
               (parseInt(RegExp.$1, 10) == d.getDate()) &&
               (parseInt(RegExp.$3, 10) == d.getFullYear() );
    }],
    ['creditcard', 'Please enter a valid credit card number.', function(v) {
        if (Validation.get('IsEmpty').test(v)) return true;
        return verifyCreditCard(v);
    }],
    ['email', 'A valid Email Address is required.', function (v) {
        if (Validation.get('IsEmpty').test(v)) return true;
        return verifyEmail(v);
    }],
    ['url', 'Please enter a valid URL.', function (v) {
        return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)
    }],
    ['date-au', 'Please use this date format: dd/mm/yyyy. For example 17/03/2006 for the 17th of March, 2006.', function(
            v) {
        if (Validation.get('IsEmpty').test(v)) return true;
        var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
        if (!regex.test(v)) return false;
        var d = new Date(v.replace(regex, '$2/$1/$3'));
        return ( parseInt(RegExp.$2, 10) == (1 + d.getMonth()) ) &&
               (parseInt(RegExp.$1, 10) == d.getDate()) &&
               (parseInt(RegExp.$3, 10) == d.getFullYear() );
    }],
    ['currency-dollar', 'Please enter a valid $ amount. For example $100.00 .', function(
            v) {
        // [$]1[##][,###]+[.##]
        // [$]1###+[.##]
        // [$]0.##
        // [$].##
        return Validation.get('IsEmpty').test(v) || /^\$?\-?([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}\d*(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)$/.test(v)
    }],
    ['selection', 'Please make a selection', function(v, elm) {
        return elm.options ? elm.selectedIndex > 0 : !Validation.get('IsEmpty').test(v);
    }],
    ['one-required', 'Please select one of the above options.', function (v, elm) {
        var p = elm.parentNode;
        var options = p.getElementsByTagName('INPUT');
        return $A(options).any(function(elm) {
            return $F(elm);
        });
    }]
]);

function verifyEmail(theString) {
    var regex = RegExp('^([0-9a-zA-Z]+[-._+&amp;])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$');
    return regex.match(theString);
}

function verifyCreditCard(theString) {
    var visa = RegExp('^4[0-9 -]{15,18}$');
    var mc = RegExp('^5[1-5][0-9 -]{14,17}$');
    var amex = RegExp('^3[47][0-9 -]{13,16}$');
    var diners = RegExp('^3(?:0[0-5]|[68][0-9])[0-9]{11}$');
    var disc = RegExp('^6(?:011|5[0-9]{2})[0-9 -]{12,15}$');
    var jcb = RegExp('^(?:2131|1800|35\\d{3})\\d{11}$');

    return visa.match(theString)
            || mc.match(theString) || amex.match(theString)
            || diners.match(theString) || disc.match(theString) ||
           jcb.match(theString);
}

Event.observe(window, 'load', function() {
    initFormValidation();
});

function initFormValidation() {
    $$('form').each(setFormValidation);
}

function setFormValidation(element) {
     new Validation(element, {useTitles : true}); 
}