/* ************************************************************************************* *\
 * The MIT License
 * Copyright (c) 2007 Fabio Zendhi Nagao - http://zend.lojcomm.com.br
 * 
 * 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 fValidator = new Class({
  Implements: [Events, Options],
  options: {
    msgContainerTag: "div",
    msgClass: "fValidator-msg",

    styleNeutral: {},
    styleInvalid: {"border-color":"#D92222"},
    styleValid: {"border-color": "#8F8F8F"},

    required: {type: "required", re: /[^.*]/, msg: "Ce champ est obligatoire."},
    alpha: {type: "alpha", re: /^[a-z ._-]+$/i, msg: "This field accepts alphabetic characters only."},
    alphanum: {type: "alphanum", re: /^[a-z0-9 ._-]+$/i, msg: "This field accepts alphanumeric characters only."},
    integer: {type: "integer", re: /^[-+]?\d+$/, msg: "Please enter a valid integer."},
    real: {type: "real", re: /^[-+]?\d*\.?\d+$/, msg: "Please enter a valid number."},
    date: {type: "date", re: /^((((0[13578])|([13578])|(1[02]))[\/](([1-9])|([0-2][0-9])|(3[01])))|(((0[469])|([469])|(11))[\/](([1-9])|([0-2][0-9])|(30)))|((2|02)[\/](([1-9])|([0-2][0-9]))))[\/]\d{4}$|^\d{4}$/, msg: "Please enter a valid date (mm/dd/yyyy)."},
    email: {type: "email", re: /^[a-z0-9._%-]+@[a-z0-9.-]+\.[a-z]{2,4}$/i, msg: "Veuillez saisir un email valide."},
    phone: {type: "phone", re: /^[\d\s ().-]+$/, msg: "Please enter a valid phone."},
    url: {type: "url", re: /^(http|https|ftp)\:\/\/[a-z0-9\-\.]+\.[a-z]{2,3}(:[a-z0-9]*)?\/?([a-z0-9\-\._\?\,\'\/\\\+&%\$#\=~])*$/i, msg: "Please enter a valid url."},
    confirm: {type: "confirm", msg: "Résultat incorrect"},

    onValid: $empty,
    onInvalid: $empty,
    throwSubmitEvent: true
  },

  initialize: function(form, options) {
    this.form = $(form);
    this.setOptions(options);

    this.fields = this.form.getElements("*[class^=fValidate]");
    this.validations = [];

    this.fields.each(function(element) {
      if(!this._isChildType(element)) element.setStyles(this.options.styleNeutral);
      element.cbErr = 0;
      var classes = element.getProperty("class").split(' ');
      classes.each(function(klass) {
        if(klass.match(/^fValidate(\[.+\])$/)) {
          var aFilters = eval(klass.match(/^fValidate(\[.+\])$/)[1]);
          for(var i = 0; i < aFilters.length; i++) {
            if(this.options[aFilters[i]]) this.register(element, this.options[aFilters[i]]);
            if(aFilters[i].charAt(0) == '=') this.register(element, $extend(this.options.confirm, {idField: aFilters[i].substr(1)}));
          }
        }
      }.bind(this));
    }.bind(this));

    this.form.addEvents({
      "submit": this._onSubmit.bind(this),
      "reset": this._onReset.bind(this)
    });
  },

  register: function(field, options) {
    field = $(field);
    this.validations.push([field, options]);
    field.addEvent("blur", function() {
      this._validate(field, options);
    }.bind(this));
  },

  _isChildType: function(el) {
    var elType = el.type.toLowerCase();
    if((elType == "radio") || (elType == "checkbox")) return true;
    return false;
  },

  _validate: function(field, options) {
    switch(options.type) {
      case "confirm":
        if($(options.idField).get('value') == field.get('value')) this._msgRemove(field, options);
        else this._msgInject(field, options);
        break;
      default:
        if(options.re.test(field.get('value'))) this._msgRemove(field, options);
        else this._msgInject(field, options);
    }
  },

  _validateChild: function(child, options) {
    var nlButtonGroup = this.form[child.getProperty("name")];
    var cbCheckeds = 0;
    var isValid = true;
     for(var i = 0; i < nlButtonGroup.length; i++) {
      if(nlButtonGroup[i].checked) {
        cbCheckeds++;
        if(!options.re.test(nlButtonGroup[i].get('value'))) {
          isValid = false;
          break;
        }
      }
    }
    if(cbCheckeds == 0 && options.type == "required") isValid = false;
    if(isValid) this._msgRemove(child, options);
    else this._msgInject(child, options);
  },

  _msgInject: function(owner, options) {
    if(!$(owner.getProperty("id") + options.type +"_msg")) {
      var msgContainer = new Element(this.options.msgContainerTag, {"id": owner.getProperty("id") + options.type +"_msg", "class": this.options.msgClass})
        .set('html',options.msg)
        .setStyle("opacity", 0)
        .injectAfter(owner)
        .get("tween", {
          duration: 500,
          transition: Fx.Transitions.linear
        }).start("opacity", 0, 1);
      owner.cbErr++;
      this._chkStatus(owner, options);
    }
  },

  _msgRemove: function(owner, options, isReset) {
    isReset = isReset || false;
    if($(owner.getProperty("id") + options.type +"_msg")) {
      var el = $(owner.getProperty("id") + options.type +"_msg");
      el.get("tween", {
        duration: 500,
        transition: Fx.Transitions.linear,
        onComplete: function() {el.dispose()}
      }).start("opacity", 1, 0);
      if(!isReset) {
        owner.cbErr--;
        this._chkStatus(owner, options);
      }
    }
  },

  _chkStatus: function(field, options) {
    if(field.cbErr == 0) {
      field.setStyles(this.options.styleValid);
      this.fireEvent("onValid", [field, options], 50);
    } else {
      field.setStyles(this.options.styleInvalid);
      this.fireEvent("onInvalid", [field, options], 50);
    }
  },

  _onSubmit: function(event) {
    event = new Event(event);
    var isValid = true;

    this.validations.each(function(array) {
      if(this._isChildType(array[0])) this._validateChild(array[0], array[1]);
      else this._validate(array[0], array[1]);
      if(array[0].cbErr > 0) isValid = false;
    }.bind(this));

    if((!isValid) || (!this.options.throwSubmitEvent)) event.stop();
    return isValid;
  },

  _onReset: function() {
    this.validations.each(function(array) {
      if(!this._isChildType(array[0])) array[0].setStyles(this.options.styleNeutral);
      array[0].cbErr = 0;
      this._msgRemove(array[0], array[1], true);
    }.bind(this));
  }
});