/*
* 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(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 : 2 });
        }
      }
      elm[prop] = true;
      elm.removeClassName('validation-passed');
      elm.addClassName('validation-failed');
      // custom: set containing div to have a class of "failure"
      var ancestors = elm.ancestors();
      var theparent = ancestors[0];
      theparent.addClassName('failure');
      return false;
    } else {
      var advice = Validation.getAdvice(name, elm);
      if(advice != null) advice.hide();
      elm[prop] = '';
      elm.removeClassName('validation-failed');
      elm.addClassName('validation-passed');
      // custom: remove class of "failure" on containing div
      var ancestors = elm.ancestors();
      var theparent = ancestors[0];
      theparent.removeClassName('failure');
      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}$/.test(v)
      }],
  ['validate-url', 'Please enter a valid URL.', function (v) {
        return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)
      }],
  ['validate-host', 'Please enter a valid server eg. www.site.com.', function (v) {
        return !Validation.get('IsEmpty').test(v) && /^(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)
      }],
  ['validate-date-au', 'Please use this date format: dd/mm/yyyy. For example 17/03/2006 for the 17th of March, 2006.', function(v) {
        if(Validation.get('IsEmpty').test(v)) return true;
        var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
        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);
        });
      }]
]);