const {
    HCSwitch,
} = require("homecontrol-control-base");

const { MerossSmartPlug } = require("meross-local");

class HCMeross extends HCSwitch {
    constructor(config) {
		super(config);

		if (!("address" in this._configuration)) {
			throw new Error(`Required configuration field "address" is missing`);
		}
        if (!("key" in this._configuration)) {
			throw new Error(`Required configuration field "key" is missing`);
		}

        this._channel = ("channel" in this._configuration) ? this._configuration.channel : 0;

        this._plug = new MerossSmartPlug(this._configuration.address, this._configuration.key);
	}

    static get version() {
		return require("./package.json").version;
	}

    turnOn() {
        return this._plug.turnOn(this._channel).then(resp => {
            if (resp.header.method == "SETACK") {
                this._state.on = true;
                this.emit("state change", this.state);
            }
        });
    }

    turnOff() {
        return this._plug.turnOff(this._channel).then(resp => {
            if (resp.header.method == "SETACK") {
                this._state.on = false;
                this.emit("state change", this.state);
            }
        });
    }

    pullState() {
        return this._plug.getPower(this._channel).then(power => {
            let hashBefore = this.state.hash;

			this._state.on = power;

			if (this.state.hash != hashBefore) {
				this.emit("state change", this.state);
			}
        });
    }
}

module.exports = HCMeross;