<?php

defined('ABSPATH') or exit;

/**
 * Class MC4WP_Ninja_Forms_v2_Integration
 *
 * @ignore
 */
class MC4WP_Ninja_Forms_v2_Integration extends MC4WP_Integration
{

    /**
     * @var string
     */
    public $name = "Ninja Forms (v2)";

    /**
     * @var string
     */
    public $description = "Subscribe visitors from your Ninja Forms forms.";


    /**
     * Add hooks
     */
    public function add_hooks()
    {
        add_action('init', array( $this, 'register_field' ));
    }

    public function register_field()
    {
        $args = array(
            'name' => __('Mailchimp', 'ninja-forms'),
            'edit_function' => '',
            'display_function' => 'ninja_forms_field_checkbox_display',
            'group' => 'standard_fields',
            'sidebar' => 'template_fields',
            'edit_label'        => true,
            'edit_label_pos'    => true,
            'label_pos_options' => array(
                array('name' => __('Left of Element', 'ninja-forms'), 'value' => 'left'),
                array('name' => __('Above Element', 'ninja-forms'), 'value' => 'above'),
                array('name' => __('Below Element', 'ninja-forms'), 'value' => 'below'),
                array('name' => __('Right of Element', 'ninja-forms'), 'value' => 'right'),
            ),
            'edit_placeholder' => false,
            'edit_req' => true,
            'edit_custom_class' => true,
            'edit_help' => true,
            'edit_desc' => true,
            'edit_meta' => false,
            'process' => array( $this, 'process' ),
            'default_label' => $this->options['label'],
            'edit_options' => array(
                array(
                    'type'    => 'select', //What type of input should this be?
                    'options' => array(
                        array(
                            'name'  => __('Unchecked', 'ninja-forms'),
                            'value' => 'unchecked',
                        ),
                        array(
                            'name'  => __('Checked', 'ninja-forms'),
                            'value' => 'checked',
                        ),
                    ),
                    'name' => 'default_value', //What should it be named. This should always be a programmatic name, not a label.
                    'label' => __('Default Value', 'ninja-forms'),
                    'class' => 'widefat', //Additional classes to be added to the input element.
                ),
            ),
        );

        ninja_forms_register_field('mc4wp-subscribe', $args);
    }

    /**
     * Process form submissions
     *
     * @param int $id
     * @param string $value
     *
     * @return bool|string
     */
    public function process($id, $value)
    {

        // field was not checked
        if ($value !== 'checked') {
            return false;
        }

        /**
         * @var Ninja_Forms_Processing $ninja_forms_processing
         */
        global $ninja_forms_processing;

        // generate an array of field label => field value
        $fields = $ninja_forms_processing->get_all_submitted_fields();

        $pretty = array();
        foreach ($fields as $field_id => $field_value) {

            // try admin label for "mc4wp-" prefixed fields, otherwise use general label
            $label = $ninja_forms_processing->get_field_setting($field_id, 'admin_label');
            if (empty($label) || stripos($label, 'mc4wp-') !== 0) {
                $label = $ninja_forms_processing->get_field_setting($field_id, 'label');
            }

            $pretty[ $label ] = $field_value;
        }

        // guess mailchimp variables
        $parser = new MC4WP_Field_Guesser($pretty);
        $data = $parser->combine(array( 'guessed', 'namespaced' ));

        // do nothing if no email was found
        if (empty($data['EMAIL'])) {
            $this->get_log()->warning(sprintf('%s > Unable to find EMAIL field.', $this->name));
            return false;
        }

        return $this->subscribe($data, $ninja_forms_processing->get_form_ID());
    }


    /**
     * @return bool
     */
    public function is_installed()
    {
        return function_exists('ninja_forms_register_field');
    }

    /**
     * @since 3.0
     * @return array
     */
    public function get_ui_elements()
    {
        return array_diff(parent::get_ui_elements(), array( 'enabled', 'implicit', 'precheck', 'css', 'label' ));
    }
}
