import Logger from 'lib/Logger';
import { Notification } from 'lib/models/Alarm';

const ReactNativeAN = require('react-native-alarm-notification').default;

export default class AlarmServiceDriver {

	private logger_:Logger;

	constructor(logger:Logger) {
		this.logger_ = logger;
	}

	public hasPersistentNotifications() {
		return true;
	}

	public notificationIsSet() {
		throw new Error('Available only for non-persistent alarms');
	}

	public async clearNotification(id:number) {
		const alarm = await this.alarmByJoplinNotificationId(id);
		if (!alarm) return;

		this.logger_.info('AlarmServiceDriver: Deleting alarm:', alarm);

		await ReactNativeAN.deleteAlarm(alarm.id);
	}

	// Returns -1 if could not be found
	private alarmJoplinAlarmId(alarm:any):number {
		if (!alarm.data) return -1;
		const m = alarm.data.match(/joplinNotificationId==>(\d+)/);
		return m ? Number(m[1]) : -1;
	}

	private async alarmByJoplinNotificationId(joplinNotificationId:number) {
		const alarms:any[] = await ReactNativeAN.getScheduledAlarms();
		for (const alarm of alarms) {
			const id = this.alarmJoplinAlarmId(alarm);
			if (id === joplinNotificationId) return alarm;
		}

		this.logger_.warn('AlarmServiceDriver: Could not find alarm that matches Joplin notification ID. It could be because it has already been triggered:', joplinNotificationId);
		return null;
	}

	public async scheduleNotification(notification:Notification) {
		const alarmNotifData = {
			title: notification.title,
			message: notification.body ? notification.body : '-', // Required
			channel: 'net.cozic.joplin.notification',
			small_icon: 'ic_launcher',
			color: 'white',
			data: { joplinNotificationId: `${notification.id}` },
		};

		// ReactNativeAN expects a string as a date and it seems this utility
		// function converts it to the right format.
		const fireDate = ReactNativeAN.parseDate(notification.date);

		const alarm = await ReactNativeAN.scheduleAlarm({ ...alarmNotifData, fire_date: fireDate });

		this.logger_.info('AlarmServiceDriver: Created new alarm:', alarm);
	}
}