/*
* Really easy field validation with Prototype
* http://tetlaw.id.au/view/javascript/really-easy-field-validation
* Andrew Tetlaw
* Version 1.5.4.1 (2007-01-05)
*
* Copyright (c) 2007 Andrew Tetlaw
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
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);
        if (typeof this.options.onSubmit == 'function') {
            this.onSubmit = this.options.onSubmit;
        }
        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) {
        if (!this.validate())
            Event.stop(ev);
    },
    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) {
            Form.getElements(this.form).findAll(function (elm) {
                return $(elm).hasClassName('validation-failed');
            }).first().focus();
        }
        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 = $(elm);
        var cn = elm.classNames();
        return result = cn.all(function (value) {
            var test = Validation.test(value, elm, options.useTitle);
            options.onElementValidate(test, elm);
            return test;
        });
    },
    test: function (name, elm, useTitle) {
        var v = Validation.get(name);
        var prop = '__advice' + name.camelize();
        try {
            if (Validation.isVisible(elm) && !v.test($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) +'" style="display:none">' + 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);
            }],
    ['validate-number', 'Please enter a valid number in this field.', function (v) {
                return Validation.get('IsEmpty').test(v) || (!isNaN(v) && !/^\s+$/.test(v));
            }],
    ['validate-digits', 'Please use numbers only in this field. please avoid spaces or other characters such as dots or commas.', function (v) {
                return Validation.get('IsEmpty').test(v) ||  !/[^\d]/.test(v);
            }],
    ['validate-alpha', 'Please use letters only (a-z) in this field.', function (v) {
                return Validation.get('IsEmpty').test(v) ||  /^[a-zA-Z]+$/.test(v);
            }],
    ['validate-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);
            }],
    ['validate-date', 'Please enter a valid date.', function (v) {
                var test = new Date(v);
                return Validation.get('IsEmpty').test(v) || !isNaN(test);
            }],
    ['validate-email', 'Please enter a valid email address. For example fred@domain.com .', function (v) {
                return Validation.get('IsEmpty').test(v) || /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})) {1,3}$/.test(v);
            }],
    ['validate-url', 'Please enter a valid URL.', function (v) {
                return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v);
            }],
    ['validate-date-au', 'Please use this date format: dd/mm/yyyy. For example 17/03/2006 for the 17th of March, 2006.', function (v) {
                if (Validation.get('IsEmpty').test(v)) return true;
                var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
                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() );
            }],
    ['validate-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);
            }],
    ['validate-selection', 'Please make a selection', function (v, elm) {
                return elm.options ? elm.selectedIndex > 0 : !Validation.get('IsEmpty').test(v);
            }],
    ['validate-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);
                });
            }]
]);