<?php
/**
 * Capability checks.
 *
 * @package FlipWebP
 */

namespace FlipWebP;

defined( 'ABSPATH' ) || exit;

/**
 * Central place for permission decisions.
 */
class Capabilities {

	/**
	 * Whether the current user may open the converter and convert a file.
	 *
	 * An attachment ID of 0 only checks the general media capability.
	 *
	 * @param int $attachment_id Attachment ID, or 0 for a general check.
	 * @return bool
	 */
	public static function can_convert( $attachment_id = 0 ) {
		if ( ! current_user_can( 'upload_files' ) ) {
			return false;
		}

		$attachment_id = (int) $attachment_id;
		if ( $attachment_id > 0 && ! current_user_can( 'edit_post', $attachment_id ) ) {
			return false;
		}

		return true;
	}

	/**
	 * Whether the current user may change plugin settings.
	 *
	 * @return bool
	 */
	public static function can_manage() {
		return current_user_can( 'manage_options' );
	}

	/**
	 * Whether the current user may convert attachments they did not upload.
	 *
	 * @return bool
	 */
	public static function can_see_all() {
		$allowed = current_user_can( 'edit_others_posts' ) || current_user_can( 'manage_options' );

		/**
		 * Filters whether the current user can list and queue every attachment.
		 *
		 * Each conversion still requires edit_post on that attachment.
		 *
		 * @param bool $allowed Whether the user can see every attachment.
		 */
		return (bool) apply_filters( 'flipwebp_can_convert_others', $allowed );
	}
}