Parametrize generic viewmodel type

import VNCommon
import VNServices

internal protocol IHaveReport {
	associatedtype TReportType
}

internal class FlowTableVM<TReport>: FlowSimpleTableVM, IHaveReport {
	typealias TReportType = TReport

	internal let report: TReport

	internal init(title: String? = nil,
				  tableVM: BaseTableViewVM,
				  report: TReport,
				  router: Router,
				  analytics: ISideAnalyticsSender? = nil,
				  selectPhotoService: ISelectPhotoProtocol? = nil,
				  reportErrorService: IReportErrorService? = nil) {
		self.report = report

		super.init(
			title: title,
			tableVM: tableVM,
			router: router,
			analytics: analytics,
			selectPhotoService: selectPhotoService,
			reportErrorService: reportErrorService
		)
	}

}

internal class FlowSimpleTableVM: BaseTableVM {

	internal let selectPhotoService: ISelectPhotoProtocol?
	internal let reportErrorService: IReportErrorService?
	internal let analytics: ISideAnalyticsSender?
	internal var shouldShowSendButton: Bool = true
	internal var shouldHandleBackButton: Bool = true
	internal var haveAnyChanges: Bool = false
	internal var canSendReport: Bool = false {
		didSet {
			self.viewModelChanged?()
		}
	}

	private let router: Router

	internal init(title: String? = nil,
				  tableVM: BaseTableViewVM,
				  router: Router,
				  analytics: ISideAnalyticsSender? = nil,
				  selectPhotoService: ISelectPhotoProtocol? = nil,
				  reportErrorService: IReportErrorService? = nil) {
		self.selectPhotoService = selectPhotoService
		self.reportErrorService = reportErrorService
		self.router = router
		self.analytics = analytics

		super.init(title: title, tableVM: tableVM)
	}

	internal func sendReport() { }

	internal func back() {
		guard self.haveAnyChanges || self.canSendReport else {
			self.router.pop()
			return
		}

		let cancel = UIAlertAction.cancel(withTitle: L10N("report.error.back.cancel"))
		let ok = UIAlertAction(title: L10N("report.error.back.ok"), style: .default) {
			[weak self] _ in
			self?.router.pop()
		}
		self.router.showAlert(
			title: nil,
			message: L10N("report.error.back.message"),
			actions: [ok, cancel]
		)
	}

}