<?php

/*
 * BuilderHelper
 *
 * Copyright(c) 2010, Thomas Shone
 * Licensed under the Creative Commons Attribution 3.0 Unported License.
 * http://www.shone.co.za
 *
 * Builder Helper helps build meta data from objects
 */

class BuilderHelper
{
    protected $oRootObject;
}

class BuilderHelperObject
{
    protected $aProperties;
    protected $aAllowedProperties = array();

    private function ___SetProperties(array $aProperties)
    {
        $this->aProperties = $aProperties;
    }

    public function ToArray()
    {
        return $this->___ConvertToArray($this->aProperties);
    }

    protected function ___ConvertToArray($mData)
    {
        if (is_object($mData))
        {
            return $mData->ToArray();
        }
        else if (is_array($mData))
        {
            $aResult = array();
            foreach ($mData as $sKey => $mContent)
            {
                $aResult[$sKey] = $this->___ConvertToArray($mContent);
            }
            return $aResult;
        }
        else
        {
            return $mData;
        }
    }

    public function __get($sName)
    {
        $sName = strtolower($sName);
        if (!empty($this->aProperties[$sName]))
        {
            return $this->aProperties[$sName];
        }
        throw new Exception('Attempting to access unknown property: ' . $sName);
    }

    public function __call($sName,  $aParam)
    {
        if (strpos($sName, 'Set') === false)
        {
            return $this;
        }

        $mValue = $aParam[0];
        $sAttribute = strtolower(substr($sName, 3));
        if (in_array($sAttribute, $this->aAllowedProperties))
        {
            //$this->aProperties[$sAttribute] = $this->___ConvertToArray($mValue);
            $this->aProperties[$sAttribute] = $mValue;
        }
        else
        {
            throw new Exception('Attempting to set invalid field "' . $sAttribute .'" on ' . get_class($this));
        }
        return $this;
    }
}

class BuilderHelperValidation extends BuilderHelperObject
{
    public function __construct(array $aParam = array())
    {
        if (!empty($aParam['match']))
        {
            $sType = !empty($aParam['type']) ? $aParam['type'] : '';
            $this->SetMatch($aParam['match'], $sType);
        }

        if (!empty($aParam['required']))
        {
            $this->SetRequired(true);
        }

        if (!empty($aParam['length']['min']))
        {
            $iMin = $aParam['length']['min'];
            $iMax = !empty($aParam['length']['max'])
                        ? $aParam['length']['max']
                        : 0;

            $this->SetMinMax($iMin, $iMax);
        }
    }
    
    public function SetMatch($sMatch, $sType = '')
    {
        $aAllowedMatches = array(
            'alphanumeric',
            'alpha',
            'numeric',
            'date',
            'email',
            'telephone',
            'url',
            'ajax'
        );

        if (in_array($sMatch, $aAllowedMatches))
        {
            if ($sMatch == 'ajax')
            {
                if ($sType != '')
                {
                    $this->aProperties['type'] = $sType;
                }
                else
                {
                    return $this;
                }
            }
            $this->aProperties['match'] = $sMatch;
        }
        return $this;
    }

    public function SetRequired($bRequired = true)
    {
        $this->aProperties['required'] = $bRequired;
        return $this;
    }

    public function SetMinMax($iMin, $iMax = 0)
    {
        $this->aProperties['length']['min'] = $iMin;
        $iMax
            && $this->aProperties['length']['max'] = $iMax;
        return $this;
    }
}

class BuilderHelperListItem extends BuilderHelperObject
{
    public function __construct($sValue, $sName = '', $sImage = '')
    {
        $this->aProperties['value'] = $sValue;
        $sName
            && $this->aProperties['name'] = $sName;
        $sImage
            && $this->aProperties['image'] = $sImage;

        $this->aAllowedProperties = array('name', 'value', 'image');
    }
}

class BuilderHelperList extends BuilderHelperObject
{
    public function __construct()
    {
    }

    public function AddListItem(BuilderHelperListItem $oItem)
    {
        $this->aProperties[] = $oItem;
        return $this;
    }
}

class BuilderHelperElement extends BuilderHelperObject
{
    public function __construct($sName, $sType = 'text')
    {
        $this->aProperties['name'] = $sName;
        $this->aProperties['type'] = $sType;

        $this->aAllowedProperties = array('description', 'name', 'value', 'size', 'hint', 'list');
    }

    public function SetValidation(BuilderHelperValidation $oValidation)
    {
        $this->aProperties['validation'] = $oValidation;
        return $this;
    }

    public function SetType($sType)
    {
        if ($this->aProperties['type'] != 'list')
        {
            unset($this->aProperties['render-mode']);
        }
        return $this;
    }

    public function SetRenderMode($sRenderMode)
    {
        if ($this->aProperties['type'] == 'list')
        {
            $this->aProperties['render-mode'] = $sRenderMode;
        }
        return $this;
    }
}

class BuilderHelperRow extends BuilderHelperObject
{
    public function __construct($sLabel = '', $sImage = '')
    {
        $this->aProperties['label'] = $sLabel;
        $sImage
            && $this->aProperties['image'] = $sImage;

        $this->aAllowedProperties = array('label', 'image');
    }

    public function AddElement(BuilderHelperElement $oElement)
    {
        $this->aProperties['element'][] = $oElement;
        return $this;
    }
}

class BuilderHelperRows extends BuilderHelperObject
{
    public function __construct()
    {
    }

    public function AddRow(BuilderHelperRow $oRow)
    {
        $this->aProperties[] = $oRow;
        return $this;
    }
}

class BuilderHelperGroup extends BuilderHelperObject
{
    public function __construct()
    {
        $this->aAllowedProperties = array('heading', 'subheading', 'copy', 'rows');
    }
}

class BuilderHelperGroups extends BuilderHelperObject
{
    public function __construct()
    {
    }

    public function AddGroup(BuilderHelperGroup $oGroup)
    {
        $this->aProperties[] = $oGroup;
        return $this;
    }
}

class BuilderHelperForm extends BuilderHelperObject
{
    public function __construct($sIdentity)
    {
        $this->aProperties['identity'] = $sIdentity;
        $this->aAllowedProperties = array('identity', 'workflow', 'script', 'groups', 'copy');
    }

    public function AddGroups(BuilderHelperGroups $oGroups)
    {
        $this->SetGroups($oGroups);
        return $this;
    }
}