<?php
/**
 * m_form.php$_info
 * Created by Komma Mediadesign.
 * Author: mike
 * Date: 3/27/13
 */
class Form_Field extends Functions
{
    /*
     * Error
     */
    protected $_error;

    /*
     * Information about the field
     */
    protected $_info = ['type'=>'text', 'classes'=>['reset_value']];

    /*
     * Construct
     */
    public function __construct($label = null)
    {
        $LanguageHandler = new LanguageHandler();
        $LanguageHandler->set(URL_LANG);
        $this->_info['lang'] = $LanguageHandler->get();

        $this->_info['label'] = $label;
        $this->_info['name'] = $this->camelCase($label);
        $this->_info['id'] = $this->_info['name'];
    }

    /*
     * Configure form field
     */
    public function config($key, $value)
    {
        if (! empty($key) && $value != null) {
            if ((isset($this->_info[$key]) && is_array($this->_info[$key]) || is_array($value))) {
                if (is_array($value) && key($value) != 0) {
                    foreach ($value as $k => $val) {
                        $this->_info[$key][$k] = $val;
                    }
                }
                if (is_array($value)) {
                    foreach ($value as $k => $val) {
                        $this->_info[$key][] = $val;
                    }
                } else {
                    $this->_info[$key][] = $value;
                }
            } else {
                $this->_info[$key] = $value;
            }
        }
    }

    /*
     * Get form configuration
     */
    public function get($key = null)
    {
        if (! $key == null) {
            return $this->_info[$key];
        }

        return $this->_info;
    }

    /*
     * Get form configuration
     */
    public function set($info)
    {
        if (! empty($info)) {
            $this->_info = $info;
        }
    }

    /*
     * Set value of the field
     */
    public function defaultValue()
    {
        if ($value = Session::get([$this->_info['form_name'].'_data', $this->_info['name']])) {
            $this->_info['value'] = $value;
        } else {
            $this->_info['value'] = $this->_info['label'];
        }
    }

    /*
     * Validate form field
     */
    public function validate($input = null)
    {
        // info['validation'] has [@attributes] as first key.
        $validation = [];
        if (isset($this->_info['validation'])) {
            foreach ($this->_info['validation'] as $info) {
                if (gettype($info) == 'object') {
                    $validation[] = $info->getName();
                }
            }
        }
        $this->_info['validation'] = $validation;

        if (count($this->_info['validation']) > 0) {
            // Field is required, check if value exists (for checkboxes)
            if (in_array('required_isset', $this->_info['validation'])) {
                if (! isset($_POST[$this->_info['name']])) {
                    $this->_error = 'Please enter '.$this->_info['label'];

                    return false;
                }
            }

            // Set value to validate
            $input = null;

            if (isset($_POST[$this->_info['name']])) {
                $input = $_POST[$this->_info['name']];
            }

            // Field is required, check if value is not empty)
            if (in_array('required', $this->_info['validation'])) {
                if (empty($input) || strip_tags($input) == $this->_info['label']) {
                    $this->_error = 'Please enter '.$this->_info['label'];

                    return false;
                }
            }

            // Check if value is a valid e-mail string
            if (in_array('email', $this->_info['validation'])) {
                if (! $this->checkMail($input)) {
                    $this->_error = 'Not a valid e-mail address';

                    return false;
                }
            }

            // Specific validation for each object
            if ((in_array('specified', $this->_info['validation']) && isset($this->_info['object']))) {
                $object = $this->_info['object'];
                $file = DOCUMENT_ROOT.'lib/form/types/'.$object.'.class.php';
                if (is_file($file)) {
                    if (! class_exists($object)) {
                        require $file;
                    }
                    $TypeObject = new $object;
                    if ($TypeObject->validate($input)) {
                        return true;
                    }
                    $this->_error = $TypeObject->getError();
                }

                return false;
            }
        }

        if ((isset($this->_info['object']) && $this->_info['object'] == 'Field_Type_Checkbox')) {
            isset($_POST[$this->_info['name']]) ? $value = $_POST[$this->_info['name']] : $value = 0;

            $key = [$this->_info['form_name'].'_data', $this->_info['name']];
            Session::set($key, $value);
        }

        return true;
    }

    public function getError()
    {
        return $this->_error;
    }
}