<?php
/**
 * @copyright Copyright (c) 2017-2018, 2020-2021 Matias De lellis <mati86dl@gmail.com>
 * @copyright Copyright (c) 2018, Branko Kokanovic <branko@kokanovic.org>
 *
 * @author Branko Kokanovic <branko@kokanovic.org>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
namespace OCA\FaceRecognition\Db;

use JsonSerializable;

use OCP\AppFramework\Db\Entity;

/**
 * Image represent one image file for one user.
 *
 * @method string getUser()
 * @method void setUser(string $user)
 *
 * @method integer getFile()
 * @method void setFile(integer $file)
 *
 * @method integer getModel()
 * @method void setModel(integer $model)
 *
 * @method string|null getError()
 * @method void setError(string $error)
 *
 * @method bool getIsProcessed()
 * @method void setIsProcessed($isProcessed)
 *
 * @method void setLastProcessedTime($lastProcessedTime)
 *
 * @method void setProcessingDuration(int $processingDuration)
 *
 */
class Image extends Entity implements JsonSerializable {

	/**
	 * User this image belongs to.
	 *
	 * @var string
	 * */
	public $user;

	/**
	 * File that this image refer to.
	 * todo: add proper getters in whole class
	 *
	 * @var integer
	 */
	public $file;

	/**
	 * Face model that processed this image.
	 *
	 * @var integer
	 */
	protected $model;

	/**
	 * Whether this image is processed or not. Needed because image doesn't have to have any faces on it,
	 * yet we still need to know if it is being processed or not.
	 *
	 * @var bool
	 */
	protected $isProcessed;

	/**
	 * Description of error that happened during image processing.
	 * If it exist, image processing should be skipped even if $is_processed is false.
	 *
	 * @var string|null
	 */
	protected $error;

	/**
	 * Timestamp when this image was last processed.
	 *
	 * @var \DateTime|null
	 */
	protected $lastProcessedTime;

	/**
	 * Duration (in ms) it took to completely process this image. Should serve as a way to give estimates to user.
	 *
	 * @var integer|null
	*/
	protected $processingDuration;

	public function __construct() {
		$this->addType('id', 'integer');
		$this->addType('user', 'string');
		$this->addType('file', 'integer');
		$this->addType('model', 'integer');
		$this->addType('isProcessed', 'bool');
	}

	public function jsonSerialize() {
		return [
			'id' => $this->id,
			'user' => $this->user,
			'file' => $this->file,
			'model' => $this->model,
			'is_processed' => $this->isProcessed,
			'error' => $this->error,
			'last_processed_time' => $this->lastProcessedTime,
			'processing_duration' => $this->processingDuration
		];
	}

	public function setIsProcessed($isProcessed): void {
		if (is_bool($isProcessed)) {
			$this->isProcessed = $isProcessed;
		} else {
			$this->isProcessed = filter_var($isProcessed, FILTER_VALIDATE_BOOLEAN);
		}
		$this->markFieldUpdated('isProcessed');
	}

}