<?php
/**
 * This source file is part of the open source project
 * ExpressionEngine (https://expressionengine.com)
 *
 * @link      https://expressionengine.com/
 * @copyright Copyright (c) 2003-2022, Packet Tide, LLC (https://www.packettide.com)
 * @license   https://expressionengine.com/license Licensed under Apache License, Version 2.0
 */

use ExpressionEngine\Library\CP\EntryManager\ColumnInterface;

require_once SYSPATH . 'ee/legacy/fieldtypes/OptionFieldtype.php';

/**
 * Option Group Fieldtype
 */
class Checkboxes_ft extends OptionFieldtype implements ColumnInterface
{

    public $info = array(
        'name' => 'Checkboxes',
        'version' => '1.0.0'
    );

    public $has_array_data = true;

    public $size = 'small';

    // used in display_field() below to set
    // some defaults for third party usage
    public $settings_vars = array(
        'field_text_direction' => 'ltr',
        'field_pre_populate' => 'n',
        'field_list_items' => array(),
        'field_pre_field_id' => '',
        'field_pre_channel_id' => ''
    );

    /**
     * A list of operators that this fieldtype supports
     *
     * @var array
     */
    public $supportedEvaluationRules = ['matches', 'notMatches', 'contains', 'notContains', 'isEmpty', 'isNotEmpty'];

    public $defaultEvaluationRule = 'matches';

    /**
     * Constructor
     *
     * @access	public
     */
    public function __construct()
    {
        parent::__construct();
        ee()->load->helper('custom_field');
    }

    public function validate($data)
    {
        $selected = decode_multi_field($data);
        $selected = empty($selected) ? array() : (array) $selected;

        // in case another fieldtype was here
        $field_options = $this->_get_field_options($data);
        $field_options = $this->_flatten($field_options);

        if ($selected) {
            if (! is_array($selected)) {
                $selected = array($selected);
            }

            $unknown = array_filter(array_diff($selected, array_keys($field_options)));

            if (count($unknown) > 0) {
                return ee()->lang->line('invalid_selection');
            }
        }

        return true;
    }

    protected function _flatten($options)
    {
        $out = array();

        foreach ($options as $key => $item) {
            if (is_array($item)) {
                $out[$key] = $item['name'];

                foreach ($this->_flatten($item['children']) as $k => $v) {
                    $out[$k] = $v;
                }
            } else {
                $out[$key] = $item;
            }
        }

        return $out;
    }

    public function display_field($data)
    {
        return $this->_display_field($data);
    }

    public function grid_display_field($data)
    {
        return $this->_display_field(form_prep($data), 'grid');
    }

    /**
     * Displays the field for the CP or Frontend, and accounts for grid
     *
     * @param string $data Stored data for the field
     * @param string $container What type of container is this field in, 'fieldset' or 'grid'?
     * @return string Field display
     */
    private function _display_field($data, $container = 'fieldset')
    {
        $this->settings = array_merge($this->settings_vars, $this->settings);

        if (isset($this->settings['string_override']) && $this->settings['string_override'] != '') {
            return $this->settings['string_override'];
        }

        $values = decode_multi_field($data);
        $field_options = $this->_get_field_options($data);

        if (REQ == 'CP') {
            return ee('View')->make('ee:_shared/form/fields/select')->render([
                'field_name' => $this->field_name,
                'choices' => $field_options,
                'value' => $values,
                'multi' => true,
                'nested' => true,
                'nestable_reorder' => true,
                'manageable' => $this->get_setting('editable', false)
                    && ! $this->get_setting('in_modal_context'),
                'add_btn_label' => $this->get_setting('add_btn_label', null),
                'editing' => $this->get_setting('editing', false),
                'manage_label' => $this->get_setting('manage_toggle_label', lang('manage')),
                'reorder_ajax_url' => $this->get_setting('reorder_ajax_url', null),
                'auto_select_parents' => $this->get_setting('auto_select_parents', false),
                'no_results' => $this->get_setting('no_results', ['text' => sprintf(lang('no_found'), lang('choices'))])
            ]);
        }

        $r = '<div class="scroll-wrap pr">';

        $r .= $this->_display_nested_form($field_options, $values);

        $r .= '</div>';

        switch ($container) {
            case 'grid':
                $r = $this->grid_padding_container($r);

                break;

            default:
                $r = form_fieldset('') . $r . form_fieldset_close();

                break;
        }

        return $r;
    }

    protected function _display_nested_form($fields, $values, $child = false)
    {
        $out = '';
        $disabled = ($this->get_setting('field_disabled')) ? 'disabled' : '';

        foreach ($fields as $id => $option) {
            $checked = (in_array(form_prep($id), $values)) ? true : false;

            if (is_array($option)) {
                $out .= '<label>' . form_checkbox($this->field_name . '[]', $id, $checked, $disabled) . NBS . $option['name'] . '</label>';
                $out .= $this->_display_nested_form($option['children'], $values, true);
            } else {
                $out .= '<label>' . form_checkbox($this->field_name . '[]', $id, $checked, $disabled) . NBS . $option . '</label>';
            }
        }

        return $out;
    }

    public function replace_tag($data, $params = array(), $tagdata = false)
    {
        ee()->load->helper('custom_field');
        $data = decode_multi_field($data);

        if ($tagdata) {
            return $this->_parse_multi($data, $params, $tagdata);
        } else {
            return $this->_parse_single($data, $params);
        }
    }

    /**
     * :length modifier
     */
    public function replace_length($data, $params = array(), $tagdata = false)
    {
        return count(decode_multi_field($data));
    }

    /**
     * :attr_safe modifier
     */
    public function replace_attr_safe($data, $params = array(), $tagdata = false)
    {
        return parent::replace_attr_safe($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :limit modifier
     */
    public function replace_limit($data, $params = array(), $tagdata = false)
    {
        return parent::replace_limit($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :encrypt modifier
     */
    public function replace_encrypt($data, $params = array(), $tagdata = false)
    {
        return parent::replace_encrypt($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :url_slug modifier
     */
    public function replace_url_slug($data, $params = array(), $tagdata = false)
    {
        return parent::replace_url_slug($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :censor modifier
     */
    public function replace_censor($data, $params = array(), $tagdata = false)
    {
        return parent::replace_censor($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :json modifier
     */
    public function replace_json($data, $params = array(), $tagdata = false)
    {
        return parent::replace_json($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :replace modifier
     */
    public function replace_replace($data, $params = array(), $tagdata = false)
    {
        return parent::replace_replace($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :url_encode modifier
     */
    public function replace_url_encode($data, $params = array(), $tagdata = false)
    {
        return parent::replace_url_encode($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    /**
     * :url_decode modifier
     */
    public function replace_url_decode($data, $params = array(), $tagdata = false)
    {
        return parent::replace_url_decode($this->replace_tag($data, $params, $tagdata), $params, $tagdata);
    }

    public function display_settings($data)
    {
        $settings = $this->getSettingsForm(
            'checkboxes',
            $data,
            'checkbox_options',
            lang('options_field_desc') . lang('checkbox_options_desc')
        );

        return array('field_options_checkboxes' => array(
            'label' => 'field_options',
            'group' => 'checkboxes',
            'settings' => $settings
        ));
    }

    public function grid_display_settings($data)
    {
        return $this->getGridSettingsForm(
            'checkboxes',
            $data,
            'checkbox_options',
            'grid_checkbox_options_desc'
        );
    }

    /**
     * Accept all content types.
     *
     * @param string  The name of the content type
     * @return bool   Accepts all content types
     */
    public function accepts_content_type($name)
    {
        return true;
    }

    public function save($data)
    {
        if (is_array($data)) {
            ee()->load->helper('custom_field');
            $data = encode_multi_field($data);
        }

        return $data;
    }

    /**
     * Update the fieldtype
     *
     * @param string $version The version being updated to
     * @return boolean TRUE if successful, FALSE otherwise
     */
    public function update($version)
    {
        return true;
    }

    public function renderTableCell($data, $field_id, $entry)
    {
        return $this->replace_tag($data);
    }
}

// END Checkboxes_ft class

// EOF
