<?php
/**
 * m_form.php
 * Created by Komma Mediadesign.
 * Author: mike
 * Date: 3/27/13
 */

class Form
{
    /*
     * Form attributes
     */
    private $_formAttr;

    /*
     * Add / edit form
     */
    private $_type;

    /*
     * Contains the fields
     */
    private $_fields = array();

    /*
     * Contains the fields
     */
    private $_buttons = array();

    /*
     * Contains a string with blockOutput
     */
    private $_blockOutput = array();


    /*
     * Construct
     */
    public function __construct($name)
    {
        $this->_formAttr['name'] = $name;
        $this->_id = $this->_formAttr['name'];
    }

    /*
     * Get form configuration
     */
    public function get()
    {
        return $this->_formAttr;
    }

    /*
     * Adds a field to the form
     * @param Field object
     */
    public function addField($Field)
    {
        $this->_fields[] = $Field;
    }

    /*
     * Adds a block to the form
     * @param string
     */
    public function addBlocks($string)
    {
        $this->_blockOutput = $string;
    }

    /*
     * Adds a button to the form
     * @param Button object
     */
    public function addButton($Button)
    {
        $this->_buttons[] = $Button;
    }

    /*
     * Set attributes
     */
    public function setAttr($attr, $value)
    {
        $this->_formAttr[$attr] = $value;
    }

    /*
     * Set form type to add or edit
     */
    public function setType($type)
    {
        $this->_type = $type;
    }

    /*
     * Render the form
     */
    public function render()
    {
        // Start form with specified attributes
        $form = '<form method="post"';
        foreach($this->_formAttr as $attr => $value)
        {
            if( isset($value) && ! empty($value)) $form .= ' ' . $attr . '="' . $value . '"';
        }
        $form .= '>';

        if( ! empty($this->_blockOutput)) $form .= $this->_blockOutput;

        // Add some buttons to the form
        if( ! empty($this->_buttons))
        {
            foreach($this->_buttons as $Button)
            {
                $Button->addClasses(array('blue'));
                $form .= $Button->display(FALSE);
            }
        }
        $form .= '<input type="hidden" name="form_type" value="'. $this->_type .'" />';
        if($this->_type == 'edit')
        {
            // Id to edit
            defined('URL_SUB2') ? $id = URL_SUB2 : $id = 0;
            $form .= '<input type="hidden" name="edit_id" value="'. $id .'" />';
        }
        $form .= '</form>';

        return $form;
    }

    /*
     * Validate this form
     */
    public function validate()
    {
        if(Session::get($this->_formAttr['name'] . '_errors')) Session::destroy($this->_formAttr['name'] . '_errors');
        $valid = true;
        foreach($this->_fields as $Field)
        {
            $data = $Field->get();
            if( ! $Field->validate())
            {
                Session::set(array($this->_formAttr['name'] . '_errors',$data['name']),$Field->getError());
                $valid = false;
            }
        }
        return $valid;
    }

    /*
     * Reset $this->_fields to an empty array
     */
    public function clearFields()
    {
        $this->_fields = array();
    }

    /*
     * Prepare values for the database
     */
    public function prepare()
    {
        // Data to store
        $data = array();

        // Get values
        foreach($this->_fields as $Field)
        {
            $fieldData = $Field->get();
            $fieldName = $fieldData['name'];

            $key = array($fieldData['form_name'] . '_data',$fieldData['name']);
            $value = Session::get($key);

            // Check if value is equal to label
            if(strip_tags($value) == $fieldData['label'])
            {
                $value = null;
            }

            // Check if to prepare values
            if(isset($fieldData['object']))
            {
                $object = $fieldData['object'];

                $file = DOCUMENT_ROOT . 'lib/form/types/' . $object . '.class.php';
                if(is_file($file))
                {
                    if( ! class_exists($object)) require $file;
                    $TypeObject = new $object;
                    if(method_exists($object,'prepareToDb'))
                    {
                        $value = $TypeObject->prepareToDb($value);
                    }
                }
            }

            /* extension CSB */
            if($fieldData['form_name'] == 'projects' && $fieldName == 'services')
            {
                // do nothing..
            }
            else
            {
                // Add value to data array
                $data[$fieldName] = $value;
            }

        }

        // add a timestamp to the data
        if( ! isset($data['timest']) && $this->_type == 'add') $data['timest'] = time();

        return $data;
    }

    /*
     * Prepare values for the database
     */
    public function fillStoredData($id)
    {
        $Dbh = new DatabaseHandler();
        $Dbh->setTableName(TABLE_PREFIX . $this->_formAttr['name'] . '_items');
        $Dbh->addRule('id',$id);
        $result = $Dbh->select();

        // Get values for each field
        foreach($this->_fields as $Field)
        {
            $fieldData = $Field->get();
            $fieldName = $fieldData['name'];
            if(isset($result[$fieldName]))
            {
                $value = $result[$fieldName];

                // prepare value from database?
                if(isset($fieldData['object']))
                {
                    $object = $fieldData['object'];

                    $file = DOCUMENT_ROOT . 'lib/form/types/' . $object . '.class.php';
                    if(is_file($file))
                    {
                        if( ! class_exists($object)) require $file;
                        $TypeObject = new $object;

                        if(method_exists($object,'prepareFromDb'))
                        {
                            $value = $TypeObject->prepareFromDb($value);
                        }
                    }
                }
                $sessionKey = array($this->_formAttr['name'] . '_data',$fieldName);
                Session::set($sessionKey,$value);
            }
            $Field->defaultValue();

            // Get Thumbnail
            if(isset($result['thumb']))
            {
                $sessionKey = array($this->_formAttr['name'] . '_data','thumb');
                Session::set($sessionKey,$result['thumb']);
            }

            if(isset($fieldData['object']))
            {
                if($fieldData['object'] == 'Field_Type_Blog_Image')
                {
                    // Fill images
                    $FileHandler = new File_Handler();
                    $FileHandler->set('_name', $this->_formAttr['name'] . '_images');
                    $FileHandler->set('_tableName',TABLE_PREFIX . $this->_formAttr['name'] . '_images');
                    $FileHandler->fillSession();
                }

                if($fieldData['object'] == 'Field_Type_Blog_Video')
                {
                    // Fill videos
                    $VideoHandler = new Video_Handler();
                    $VideoHandler->set('_form_name', $this->_formAttr['name']);
                    $VideoHandler->fillSession();
                }
            }
        }

        /* CSB Extension */

        // Get URL SUB
        $LanguageHandler = new LanguageHandler();
        $LanguageHandler->set(URL_LANG);
        defined('URL_PAGE') ? $page = $LanguageHandler->convert(URL_PAGE) : $page = '';

        if($page == 'projects' && defined('URL_SUB2'))
        {
            $sessionServices = array();

            $itemId = URL_SUB2;
            $Dbh = new DatabaseHandler();
            $Dbh->setTableName(TABLE_PREFIX . 'projects_services');
            $Dbh->setData(array('service_id'=>''));
            $Dbh->addRule('project_id',$itemId);
            $itemsInDB = $Dbh->select();
            $itemsInDB = $Dbh->twoDimensional($itemsInDB);
            foreach($itemsInDB as $item)
            {
                $sessionServices[] = $item['service_id'];
            }

            Session::set(array('projects_data','services'), $sessionServices);
        }

    }
}