<?php

namespace JR\NetSuite\Cron;

use Magento\Cron\Model\Schedule;

abstract class AbstractSyncCron {

  public const FETCH = 'fetch';
  public const PROCESS = 'process';
  /**
   * @var int
   */
  private $processed = 0;

  /**
   * @var \JR\NetSuite\Helper\Data
   */
  protected $helper;

  /**
   * @var \JR\NetSuite\Logger\Logger
   */
  protected $logger;

  /**
   * @var \Magento\Cron\Model\ScheduleFactory
   */
  protected $scheduleFactory;

  /**
   * @var \Magento\Cron\Model\ResourceModel\Schedule\CollectionFactory
   */
  protected $scheduleCollectionFactory;

  /**
   * AbstractSyncCron constructor.
   *
   * @param \Magento\Cron\Model\ScheduleFactory $scheduleFactory
   * @param \Magento\Cron\Model\ResourceModel\Schedule\CollectionFactory $scheduleCollectionFactory
   * @param \JR\NetSuite\Helper\Data $helper
   */
  public function __construct(
    \Magento\Cron\Model\ScheduleFactory $scheduleFactory,
    \Magento\Cron\Model\ResourceModel\Schedule\CollectionFactory $scheduleCollectionFactory,
    \JR\NetSuite\Helper\Data $helper,
  ) {
    $this->helper = $helper;
    $this->scheduleFactory = $scheduleFactory;
    $this->scheduleCollectionFactory = $scheduleCollectionFactory;
    $this->logger = $helper->getLogger();
  }

  /**
   * get job code
   */
  abstract public function getJobCode();

  /**
   * get queue manager
   */
  abstract protected function getQueueManager();

  /**
   * Execute the cron.
   *
   * @return void
   */
  public function fetchAndEnqueue() {
    // $this->logger->info("[$this->JOB_CODE] fetchAndEnqueue");
    if (!$this->helper->getNetSuiteIsEnabled() || $this->isRunningCurrently(self::FETCH)) {
      $this->processed = 0;
      return;
    }

    $this->getQueueManager()->fetchAndEnqueue();
  }

  /**
   * Execute the cron.
   *
   * @return void
   */
  public function fetchAllAndEnqueue() {
    // $this->logger->info("[$this->JOB_CODE] fetchAllAndEnqueue");
    if (!$this->helper->getNetSuiteIsEnabled() || $this->isRunningCurrently(self::FETCH)) {
      $this->processed = 0;
      return;
    }

    $this->getQueueManager()->fetchAndEnqueue(true);
  }

  /**
   * Schedule the cron.
   *
   * @param string $time
   * @return bool
   */
  public function scheduleCronJob($type = self::PROCESS, $time = '+1 minute') {
    $currentDateTime = (new \DateTime())->format('Y-m-d H:i:s');
    $scheduledDateTime = (new \DateTime())->modify($time)->format('Y-m-d H:i:00');

    return $this->scheduleFactory->create()
                ->setJobCode($this->getJobCode() . '_' . $type)
                ->setStatus(Schedule::STATUS_PENDING)
                ->setCreatedAt($currentDateTime)
                ->setScheduledAt($scheduledDateTime)
                ->save();
  }

  // Optionally override in child
  protected function getCustomBatchSize(): ?int {
    return null; // base class doesn't define custom size
  }

  /**
   * Process the queue items.
   *
   * @return int
   */
  /*
  public function processQueueItems()
  {
    if (!$this->helper->getNetSuiteIsEnabled() || $this->isRunningCurrently(self::PROCESS)) {
      $this->processed = 0;
      return 0;
    }

    $batchSize = $this->helper->getCronBatchSize() ?: 50;

    return $this->getQueueManager()->processBatch($batchSize);
  }
  */
  public function processQueueItems() {
    if (!$this->helper->getNetSuiteIsEnabled() || $this->isRunningCurrently(self::PROCESS)) {
      $this->processed = 0;
      return 0;
    }

    // ?? Let child class override the batch size if needed
    $customBatchSize = $this->getCustomBatchSize();
    $batchSize = $customBatchSize !== null
                                    ? $customBatchSize
                                    : ($this->helper->getCronBatchSize() ?: 50);

    $this->logger->info("[$this->JOB_CODE] processQueueItems: batch size -> " . $batchSize);
    return $this->getQueueManager()->processBatch($batchSize);
  }

  /**
   * Check if the cron is running currently.
   *
   * @return bool
   */
  public function isRunningCurrently($type = self::PROCESS) {
    $schedule = $this->scheduleCollectionFactory->create()
                     ->addFieldToFilter('job_code', $this->getJobCode() . '_' . $type)
                     ->addFieldToFilter('status', Schedule::STATUS_RUNNING);

    return $schedule->count() > 1; // 1 meaning the current job
  }

  /**
   * Get the number of processed items.
   *
   * @return int
   */
  public function getProcessed() {
    return $this->processed;
  }

}