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<?php

namespace BaseModule;

/**
 * Form is extension of standard \Nette\Application\UI\Form,
 * it additionally supports adding inputs with type specified in argument
 */
class Form extends \Nette\Application\UI\Form {

    /**
     * Array of added inputs (to prevent multiple added names)
     * @var array
     */
    private $inputs = array();

    /**
     * Adds input specified in argument
     *
     * @param string $originalName
     * @param string $type
     * @param string $label
     * @param string $namePrefix prefix that will be added to input & it's modifiers
     * @param mixed $params
     * @return string whole input name (on success)
     */
    public function addInput($originalName, $type = 'text', $label = '', $namePrefix = '', $params = null) {
        $name = $namePrefix . '_' . $originalName;

        // if input already exists, do not add it again
        if (in_array($name, $this->inputs)) {
            return false;
        }

        // if input has modifiers, add them as well (recursively)
        if ($params !== null && array_key_exists('modifiers', $params)) {
            foreach ($params['modifiers'] as $key => $input) {
                $this->addInput($key, $input[0], $input[1], $namePrefix, $input[2]);
            }
        }

        array_push($this->inputs, $name);
        switch ($type) {
            case 'hidden':
                // hidden with value
                if (isset($params['value'])) {
                    $this->addHidden($name, $params['value']);
                } else {
                    $this->addHidden($name);
                }
                break;
            case 'text':
                $placeHolder = isset($params['placeholder']) ? $params['placeholder'] : '';
                $this->addText($name, $label)->setAttribute('placeholder', $placeHolder);
                break;
            case 'textarea':
                $placeHolder = isset($params['placeholder']) ? $params['placeholder'] : '';
                $this->addTextArea($name, $label)->setAttribute('placeholder', $placeHolder);
                break;
            case 'select':
                // select requires items parameter
                if (empty($params['items'])) {
                    // badly filled parameters, add textbox instead
                    $this->addText($name, $label);
                } else {
                    $this->addSelect($name, $label, $params['items']);
                }
                break;
            case 'file':
                $this->addUpload($name, $label);
                break;
            case'checkbox':
                if (isset($params['default']) && $params['default'] == 'checked') {
                    $this->addCheckbox($name, $label)->setDefaultValue('checked');
                } else {
                    $this->addCheckbox($name, $label);
                }
        }

        return $name;
    }

}