import * as logger from './log'
import { mqttHandler } from './MqttDispatcher'
import { AHomematicItem } from './AHomematicItem'


export class HomematicFourButtonSingleItem {
    private actionTopic: string

    constructor(actionTopic: string) {
        this.actionTopic = actionTopic
    }

    processMessage(topic: string, payload: string) {
        switch(topic) {
            case 'PRESS_SHORT':
                mqttHandler.send(this.actionTopic, 'SHORT', true)
                break
            case 'PRESS_LONG':
            case 'PRESS_CONT':
                mqttHandler.send(this.actionTopic, 'LONG_HOLD', true)
                break
            case 'PRESS_LONG_RELEASE':
                mqttHandler.send(this.actionTopic, 'LONG_END', true)
                break
            default:
                logger.warn(`HM4BSI: no handling available for ${topic}`)
                break
        }
    }
}

export class HomematicFourButtonThing extends AHomematicItem {
    private itemObjs: HomematicFourButtonSingleItem[]

    constructor(floor: string, room: string, item: string, hmId: number, itemObjs: HomematicFourButtonSingleItem[]) {
        super(floor, room, item, hmId)
        this.itemObjs = itemObjs
        if (this.itemObjs.length != 4) {
            throw new Error('itemObjs for HomematicFourButtonThing must have four elements')
        }
        this.subscribeTopics = [
            `${this.deviceTopicPre}/#` 
        ]
    }

    processMessage(topic: string, payload: string) {
        logger.info(`HM4B: ${topic}, ${payload}`)
        let buttonRelatedPart = topic.substring(this.deviceTopicPre.length+1)
        let buttonIdx = parseInt(buttonRelatedPart.substring(0, buttonRelatedPart.indexOf('/')))
        if (buttonIdx >= 1 && buttonIdx <= 4) {
            this.itemObjs[buttonIdx-1].processMessage(buttonRelatedPart.substring(buttonRelatedPart.indexOf('/')+1), payload)
        } else {
            logger.warn(`HM4B: no handling available for ${topic}`)
        }
    }
}