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<?php

defined('ABSPATH') || exit;
if (!class_exists('WP_Async_Request', false)) {
    include_once dirname(WC_PLUGIN_FILE) . '/includes/libraries/wp-async-request.php';
}
if (!class_exists('WP_Background_Process', false)) {
    include_once dirname(WC_PLUGIN_FILE) . '/includes/libraries/wp-background-process.php';
}
abstract class WC_Background_Process extends WP_Background_Process
{
    protected function is_queue_empty()
    {
        global $wpdb;
        $table = $wpdb->options;
        $column = 'option_name';
        if (is_multisite()) {
            $table = $wpdb->sitemeta;
            $column = 'meta_key';
        }
        $key = $wpdb->esc_like($this->identifier . '_batch_') . '%';
        $count = $wpdb->get_var($wpdb->prepare("SELECT COUNT(*) FROM {$table} WHERE {$column} LIKE %s", $key));
        return !($count > 0);
    }
    protected function get_batch()
    {
        global $wpdb;
        $table = $wpdb->options;
        $column = 'option_name';
        $key_column = 'option_id';
        $value_column = 'option_value';
        if (is_multisite()) {
            $table = $wpdb->sitemeta;
            $column = 'meta_key';
            $key_column = 'meta_id';
            $value_column = 'meta_value';
        }
        $key = $wpdb->esc_like($this->identifier . '_batch_') . '%';
        $query = $wpdb->get_row($wpdb->prepare("SELECT * FROM {$table} WHERE {$column} LIKE %s ORDER BY {$key_column} ASC LIMIT 1", $key));
        $batch = new stdClass();
        $batch->key = $query->{$column};
        $batch->data = array_filter((array) maybe_unserialize($query->{$value_column}));
        return $batch;
    }
    protected function batch_limit_exceeded()
    {
        return $this->time_exceeded() || $this->memory_exceeded();
    }
    protected function handle()
    {
        $this->lock_process();
        do {
            $batch = $this->get_batch();
            foreach ($batch->data as $key => $value) {
                $task = $this->task($value);
                if (false !== $task) {
                    $batch->data[$key] = $task;
                } else {
                    unset($batch->data[$key]);
                }
                if ($this->batch_limit_exceeded()) {
                    break;
                }
            }
            if (!empty($batch->data)) {
                $this->update($batch->key, $batch->data);
            } else {
                $this->delete($batch->key);
            }
        } while (!$this->batch_limit_exceeded() && !$this->is_queue_empty());
        $this->unlock_process();
        if (!$this->is_queue_empty()) {
            $this->dispatch();
        } else {
            $this->complete();
        }
    }
    protected function get_memory_limit()
    {
        if (function_exists('ini_get')) {
            $memory_limit = ini_get('memory_limit');
        } else {
            $memory_limit = '128M';
        }
        if (!$memory_limit || -1 === intval($memory_limit)) {
            $memory_limit = '32G';
        }
        return wp_convert_hr_to_bytes($memory_limit);
    }
    public function schedule_cron_healthcheck($schedules)
    {
        $interval = apply_filters($this->identifier . '_cron_interval', 5);
        if (property_exists($this, 'cron_interval')) {
            $interval = apply_filters($this->identifier . '_cron_interval', $this->cron_interval);
        }
        $schedules[$this->identifier . '_cron_interval'] = array('interval' => MINUTE_IN_SECONDS * $interval, 'display' => sprintf(__('Every %d minutes', 'woocommerce'), $interval));
        return $schedules;
    }
    public function delete_all_batches()
    {
        global $wpdb;
        $table = $wpdb->options;
        $column = 'option_name';
        if (is_multisite()) {
            $table = $wpdb->sitemeta;
            $column = 'meta_key';
        }
        $key = $wpdb->esc_like($this->identifier . '_batch_') . '%';
        $wpdb->query($wpdb->prepare("DELETE FROM {$table} WHERE {$column} LIKE %s", $key));
        return $this;
    }
    public function kill_process()
    {
        if (!$this->is_queue_empty()) {
            $this->delete_all_batches();
            wp_clear_scheduled_hook($this->cron_hook_identifier);
        }
    }
}