solar-charging-switch/switch.js

function processHttpResponse(res, error_code, error_msg, ud) {
  print("errors-http-post:", error_code, error_msg);
  if (error_code === 0) { // // do this so that during timeout no crash
	let parsedBody = JSON.parse(res.body);
	let production = parsedBody["801"]["170"]["101"];
	let consumption = parsedBody["801"]["170"]["110"];
	print("read production and consumption", production, consumption)
	let threshold;
	if (switchIsOpen) {
	  threshold = consumption;
	} else {
	  threshold = consumption + CONFIG.chargingConsumption;
	}
	// print(threshold);
	if (production> threshold) {
	  if (!switchIsOpen) {
		setSwitch(true);
	  }
	} else {
	  if (switchIsOpen) {
		setSwitch(false);
	  }
	}
  }
}

function processTick(ud) {
  Shelly.call("HTTP.REQUEST",
	{ method: "POST", url: CONFIG.pollingUrl, body: '{"801":{"170":null}}', timeout: 10 },
	processHttpResponse,
	null
  );
}

function runLoop() {
  let alertTimer = Timer.set(
      CONFIG.pollingInterval,
      true, // Run periodically
      processTick,
      null
  );
}

function processSwitchSet(res, error_code, error_msg, ud) {
  print("errors-switch-set:", error_code, error_msg);
  let newSwitchState = !res["was_on"];
  switchIsOpen = newSwitchState;
  print("Changed switch state to:", newSwitchState);
}

function setSwitch(on) {
  Shelly.call("Switch.Set",
    { id: CONFIG.switchId, on: on },
    processSwitchSet,
    null
  );
}

let CONFIG = {
  pollingInterval: 60 * 1000,
  pollingUrl: "192.168.178.101/getjp",
  switchId: 0,
  chargingConsumption: 2100,
};

let switchIsOpen = Shelly.getComponentStatus("switch:0").output;
print("Initialized switchIsOpen with:", switchIsOpen);

runLoop();