let AItem = require('./AItem')
let logger = require('./log')
let mqtt = require('./mqttHandler');


class TimerAdaptor extends AItem {
    constructor(floor, room, item, delay) {
        super(floor, room, item);
        this.actionStateTopic = `${this.topicFirstPart}/state`;
        this.inTopic = `${this.topicFirstPart}/timerIn`;
        this.subscribeTopics = [ this.inTopic ];
        this.state = 'OFF';
        this.delay = delay;
        this.timer = null;
    }

    processMessage(topic, payload) {
        switch (topic) {
            case this.inTopic:
                switch (payload) {
                    case 'SHORT':
                        if ((this.state == 'ON') && (this.timer != null)) {
                            clearTimeout(this.timer);
                        }
                        this.state = 'ON';
                        mqtt.send(this.actionStateTopic, this.state, true);
                        this.timer = setTimeout(() => {
                            logger.info(`timer ${this.itemId} elapsed`);
                            this.state = 'OFF';
                            mqtt.send(this.actionStateTopic, this.state, true);
                        }, (this.delay * 1000));
                        break;
                    case 'LONG_END':
                    clearTimeout(this.timer);
                        if (this.state == 'OFF') {
                            this.state = 'ON';
                            this.overwrite = true;
                        } else {
                            this.state = 'OFF';
                            this.overwrite = false;
                        }
                        mqtt.send(this.actionStateTopic, this.state, true);
                        break;
                }  
                break;
        }
    }
}


module.exports = TimerAdaptor;