import * as logger from './log'
import { mqttHandler } from './MqttDispatcher'
import { AHomegearItem } from './AHomegearItem'
import { ContactExport, ExportType } from './Export'
import { Disabler } from './Disabler'

export class MaxWindowContact extends AHomegearItem implements Disabler {
    private deviceFeedbackTopic: string
    private stateFeedbackTopic: string
    private stateTopic: string
    private state: string

    getStateFeedbackTopic(): string {
        return this.stateFeedbackTopic
    }

    transform(payload: string) : string {
        let res: string
        if (payload == 'OPEN') {
            res = 'DISABLE'
        } else if (payload == 'CLOSED') {
            res = 'ENABLE'
        } else {
            res = 'UNKNOWN'
        }
        return res
    }

    constructor(floor: string, room: string, item: string, label: string, hmId: number) {
        super(floor, room, item, label, hmId)
        this.stateTopic = `${this.topicFirstPart}/state`
        this.stateFeedbackTopic = `${this.topicFirstPart}/state/feedback`
        this.deviceFeedbackTopic = `${this.deviceTopicPre}/1/STATE`
        this.subscribeTopics = [
            this.stateTopic,
            this.deviceFeedbackTopic
        ]
    }

    exportItem() : ExportType|null {
        return ContactExport(this.itemId, this.label, this.stateFeedbackTopic)
    }

    processMessage(topic: string, payload: string) : void {
	if (payload == 'true') {
		this.state = 'OPEN'
	} else {
		this.state = 'CLOSED'
	}
        mqttHandler.send(this.stateFeedbackTopic, this.state)
    }

}