UpsellWP: Custom conditions

UpsellWP: Add Custom conditions

/**
 * Register custom condition.
 */
add_filter('cuw_conditions', function ($conditions) {
    if (empty($conditions['custom']) && class_exists('CUWCustomCondition')) {
        $conditions['custom'] = [
            'name' => __("Custom Conditions", 'checkout-upsell-woocommerce'),
            'group' => __("Custom", 'checkout-upsell-woocommerce'),
            'handler' => new CUWCustomCondition(),
            'campaigns' => [
                'checkout_upsells',
                'cart_upsells',
                'double_order',
                'upsell_popups',
                'cart_addons',
                //'post_purchase',
                //'noc',
                //'thankyou_upsells',
            ],
        ];
    }
    return $conditions;
}, 100);

/**
 * Handle custom conditions.
 */
add_action('wp_loaded', function () {
    if (class_exists('CUWCustomCondition') || !class_exists('\CUW\App\Modules\Conditions\Base')) {
        return;
    }

    /**
     * Custom condition handler class.
     */
    class CUWCustomCondition extends \CUW\App\Modules\Conditions\Base
    {
        /**
         * Check condition.
         *
         * @param array $condition Condition data.
         * @param array $data Array of minimal cart or order data.
         * @return bool
         */
        public function check($condition, $data)
        {
            if (empty($condition['value'])) {
                return false;
            }

            $condition_passed = false;
            if ($condition['value'] == 'custom_1') {
                // here you can add your own condition and update $condition passed variable.
            } elseif ($condition['value'] == 'custom_2') {
                // here you can add your another condition and update $condition passed variable.
            }
            return $condition_passed;
        }

        /**
         * Render condition view file in campaign page.
         *
         * @param array $data Condition data.
         * @param bool $print Echo view or not.
         * @return bool|string
         */
        public function template($data = [], $print = false)
        {
            $key = isset($data['key']) ? (int)$data['key'] : '{key}';
            $value = !empty($data['condition']['value']) ? $data['condition']['value'] : [];
            ob_start();
            ?>
            <div class="condition-method flex-fill">
                <select class="form-control optional trigger-change"
                        name="conditions[<?php echo esc_attr($key); ?>][value]">
                    <option value="custom_1" <?php if ($value == 'custom_1') echo "selected"; ?>><?php esc_html_e("Condition 1", 'checkout-upsell-woocommerce'); ?></option>
                    <option value="custom_2" <?php if ($value == 'custom_2') echo "selected"; ?>><?php esc_html_e("Condition 2", 'checkout-upsell-woocommerce'); ?></option>
                </select>
            </div>
            <?php
            $html = ob_get_clean();
            if ($print) echo $html;
            return $html;
        }
    }
});

You can add your custom condition check code at line number 53 in the above snippet.