import { useContext, useCallback, useState } from 'react';
import { HackleRemoteConfig, EmptyHackleRemoteConfig } from '../models';
import { HackleContext } from '../components';
import { InputUtil } from '../utils';

export function useRemoteConfig(): HackleRemoteConfig {
  const { hackle, userVersion } = useContext(HackleContext);
  const getRemoteConfig = useCallback(() => {
    return hackle?.remoteConfigSync() || new EmptyHackleRemoteConfig();
  }, [hackle]);

  const [remoteConfig, setRemoteConfig] = useState(() => {
    return getRemoteConfig();
  });

  const currentInput = {
    userVersion,
  };

  const [prevInput, setPrevInput] = useState(currentInput);
  if (!InputUtil.isInputEqual(prevInput, currentInput)) {
    setPrevInput(currentInput);
    setRemoteConfig(getRemoteConfig());
  }

  return remoteConfig;
}