'use strict';

// Handlers for monster input topics. Each is a pure function over the
// domain (source). Unit conversion for incoming flow happens in the
// handler (the legacy nodeClass did it inline) — anything else inbound
// is passed straight through to source.handleInput.

const { convert } = require('generalFunctions');

exports.cmdStart = (source, msg) => {
  source.handleInput('i_start', Boolean(msg.payload));
};

exports.setSchedule = (source, msg) => {
  source.handleInput('monsternametijden', msg.payload);
};

exports.setRain = (source, msg) => {
  source.handleInput('rain_data', msg.payload);
};

exports.dataFlow = (source, msg, ctx) => {
  const log = ctx?.logger || source.logger;
  const value = Number(msg.payload?.value);
  const unit = msg.payload?.unit;
  if (!Number.isFinite(value) || !unit) {
    log?.warn?.('data.flow payload must include numeric value and unit.');
    return;
  }
  let converted = value;
  try { converted = convert(value).from(unit).to('m3/h'); }
  catch (err) { log?.warn?.(`data.flow unit conversion failed: ${err.message}`); return; }
  source.handleInput('input_q', { value: converted, unit: 'm3/h' });
};

exports.setMode = (source, msg) => {
  if (typeof source.setMode === 'function') source.setMode(msg.payload);
};

exports.setModelPrediction = (source, msg) => {
  if (typeof source.setModelPrediction === 'function') source.setModelPrediction(msg.payload);
};