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

const TPLink = require('tplink-smartplug-node');

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

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

	turnOn() {
		return new Promise((resolve, reject) => {
			let tp = new TPLink(this._configuration.address, (err) => {
				if (err) return reject(err);

				tp.turnOn((parsed, resp) => {
					if (!parsed) return reject("Could not parse response");

					if (resp.system.set_relay_state.err_code == 0) {
						this._state.on = true;
						this.emit("state change", this.state);
						return resolve();
					} else {
						return reject("Could not parse response");
					}
				});
			});
		});
	}

	turnOff() {
		return new Promise((resolve, reject) => {
			let tp = new TPLink(this._configuration.address, (err) => {
				if (err) return reject(err);

				tp.turnOff((parsed, resp) => {
					if (!parsed) return reject("Could not parse response");

					if (resp.system.set_relay_state.err_code == 0) {
						this._state.on = false;
						this.emit("state change", this.state);
						return resolve();
					} else {
						return reject("Could not parse response");
					}
				});
			});
		});
	}

	pullState() {
		return new Promise((resolve, reject) => {
			let tp = new TPLink(this._configuration.address, (err) => {
				if (err) return reject(err);

				tp.getInfo((parsed, resp) => {
					if (parsed) {
						let hashBefore = this.state.hash;

						this._state.on = (resp.system.get_sysinfo.relay_state == 1);

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

					return resolve();
				});
			});
		});
	}
}

module.exports = HCTPLink;