<?php
/**
 * Form_Field.class.php
 * Created by Komma Mediadesign.
 * Author: mike
 * Date: 13/12/13
 */

class Form_Field
{
    /*
     * Name of the form
     */
    protected $formName;

    /*
     * Name - String
     * f.e. "title"
     */
    protected $name;

    /*
     * Label - String
     * f.e. "Title"
     */
    protected $label;

    /*
     * Placeholder - String
     * f.e. "Enter your title"
     */
    protected $placeholder;

    /*
     * Object - String
     * f.e. "Field_Type_Text"
     */
    protected $object;

    /*
     * Validation - Array
     * f.e. [0]=>required,[1]=>price
     */
    protected $validation;

    /*
     * Value
     */
    protected $value;

    /*
     * Errors
     */
    protected $errors;

    /*
     * Construct
     */
    public function __construct(){}

    /*
     * Get data
     */
    public function get()
    {
        $data = array();
        $data['name'] =  $this->name;
        $data['object'] = $this->object;

        return $data;
    }

    /*
     * Set Form Name
     */
    public function setFormName($formName)
    {
        $this->formName = $formName;
    }

    /*
     * Set Data
     */
    public function setData($data)
    {
        // Set field name
        $this->name = $data['name'];

        // Label above field
        $this->label = $data['label'];

        // Place holder if value is empty
        $this->placeholder = $data['placeholder'];

        // Field type object
        $this->object = $data['object'];

        // Sorts of validation
        $this->validation = $data['validation'];

        // Define value in case of existing item
        if(isset($_SESSION['current_item']) && isset($_SESSION[$this->formName][$_SESSION['current_item']]['data'][$this->name]))
        {
            $this->value = $_SESSION[$this->formName][$_SESSION['current_item']]['data'][$this->name];
        }
        // Define value in case of new item
        else if(isset($_SESSION[$this->formName]['data'][$this->name]))
        {
            $this->value = $_SESSION[$this->formName]['data'][$this->name];
        }
        else
        {
            $this->value = '';
        }
    }

    /*
     * Generate function defined in each field object
     */
    public function generate(){}

    /*
     * Add live validation
     */
    public function addLiveValidation()
    {
        // Create object
        $LiveValidation = new Form_Live_Validation($this->name,$this->object);

        // Set fields to validate
        $LiveValidation->init($this->validation);

        // Return javascript output
        return $LiveValidation->get();
    }

    /*
     * Validate
     */
    public function validate()
    {
        if(isset($_POST[$this->name]))
        {
            // Get values
            $value = $_POST[$this->name];
            $valid = true;

            $_SESSION[$this->formName]['data'][$this->name] = $value;

            // The value is required
            if(in_array('required',$this->validation))
            {
                if($value == null || $value == '')
                {
                    $valid = false;
                    $this->errors = 'U dient dit veld in te vullen.';
                }
            }

            // The value is a email
            if(in_array('email',$this->validation))
            {
                // check for email
                if( ! Fn::checkMail($value))
                {
                    $valid = false;
                    $this->errors = 'U dient een geldig e-mailadres in te vullen.';
                }
            }

            // The value is a price
            if(in_array('price',$this->validation))
            {
                // check for price
            }

            // The value is a date
            if(in_array('date',$this->validation))
            {
                // check for date
            }

            return $valid;
        }
        // todo checkboxes unchecked ( !isset) ?
        return false;
    }

    /*
     * return errors
     */
    public function getErrors()
    {
        return $this->errors;
    }
}