StandaloneSearchBox (Search Engine)

import {
  buildStandaloneSearchBox,
  StandaloneSearchBoxOptions,
} from '@coveo/headless';
import {useEffect, useState, FunctionComponent, useContext} from 'react';
import {AppContext} from '../../context/engine';
import {standaloneSearchBoxStorageKey} from './standalone-search-box-storage-key';
 
export const StandaloneSearchBox: FunctionComponent<
  StandaloneSearchBoxOptions
> = (props) => {
  const {engine} = useContext(AppContext);
  const controller = buildStandaloneSearchBox(engine!, {options: props});
  const [state, setState] = useState(controller.state);
 
  useEffect(() => controller.subscribe(() => setState(controller.state)), []);
 
  function isEnterKey(e: React.KeyboardEvent<HTMLInputElement>) {
    return e.key === 'Enter';
  }
 
  if (!state) {
    return null;
  }
 
  if (state.redirectTo) {
    const {redirectTo, value, analytics} = state;
    const data = JSON.stringify({value, analytics});
    localStorage.setItem(standaloneSearchBoxStorageKey, data);
    window.location.href = redirectTo;
    return null;
  }
 
  return (
    <div>
      <input
        value={state.value}
        onChange={(e) => controller.updateText(e.target.value)}
        onKeyDown={(e) => isEnterKey(e) && controller.submit()}
      />
      <ul>
        {state.suggestions.map((suggestion) => {
          const value = suggestion.rawValue;
          return (
            <li key={value} onClick={() => controller.selectSuggestion(value)}>
              {value}
            </li>
          );
        })}
      </ul>
    </div>
  );
};
 
// usage
 
/**
 * ```tsx
 * <StandaloneSearchBox id="ssb-1" redirectionUrl="/search-page"/>;
 * ```
 */