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path: root/src/components/Header.js
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import Image from "next/image";
import { useCallback, useEffect, useRef, useState } from "react";
import Head from "next/head";
import { useRouter } from "next/router";
import axios from "axios";
import {
  MagnifyingGlassIcon,
  Bars3Icon,
  ShoppingCartIcon,
  ChevronRightIcon
} from "@heroicons/react/24/outline";

// Helpers
import { getAuth } from "../helpers/auth";
// Components
import Link from "./Link";
// Images
import Logo from "../images/logo.png";

export default function Header({ title }) {
  const router = useRouter();
  const { q = '' } = router.query;
  const [searchQuery, setSearchQuery] = useState(q);
  const [suggestions, setSuggestions] = useState([]);
  const searchQueryRef = useRef();
  const [isMenuActive, setIsMenuActive] = useState(false);
  const [auth, setAuth] = useState();

  useEffect(() => { 
    if (!auth) setAuth(getAuth()) 
  }, [auth]);

  useEffect(() => {
    if (q) {
      searchQueryRef.current.blur();
      setSuggestions([]);
    };
  }, [q])

  const clickSuggestion = (value) => {
    console.log(value);
    router.push(`/shop/search?q=${value}`, undefined, { scroll: false });
  }

  const getSuggestion = useCallback(async () => {
    if (searchQuery.trim().length > 0) {
      let result = await axios(`${process.env.SELF_HOST}/api/shop/suggest?q=${searchQuery.trim()}`);
      setSuggestions(result.data.suggest.mySuggester[searchQuery.trim()].suggestions);
    } else {
      setSuggestions([]);
    }
  }, [searchQuery]);

  useEffect(() => {
    if (document.activeElement == searchQueryRef.current) getSuggestion();
  }, [getSuggestion]);

  const openMenu = () => setIsMenuActive(true);
  const closeMenu = () => setIsMenuActive(false);

  const searchSubmit = (e) => {
    e.preventDefault();
    if (searchQuery.length > 0) {
      router.push(`/shop/search?q=${searchQuery}`, undefined, { scroll: false });
    } else {
      searchQueryRef.current.focus();
    }
  }

  return (
    <>
      <Head>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
        <title>{title}</title>
      </Head>
      
      <div className={'menu-wrapper' + (isMenuActive ? ' active ' : '')}>
        <div className="flex gap-x-2 items-center border-b border-gray_r-6 p-4">
          {auth ? (
            <h1>Hi, {auth.name}</h1>
          ) : (
            <>
              <Link href="/login" onClick={closeMenu} className="w-full py-2 btn-light text-gray_r-12">Masuk</Link>
              <Link href="/register" onClick={closeMenu} className="w-full py-2 btn-yellow text-gray_r-12">Daftar</Link>
            </>
          )}
        </div>
        <div className="flex flex-col">
          {auth && (
            <Link className="flex w-full font-normal text-gray_r-11 border-b border-gray_r-6 p-4 py-3" href="/shop/brands" onClick={closeMenu}>
                <span>Profil Saya</span>
                <div className="ml-auto">
                  <ChevronRightIcon className="text-gray_r-12 w-5" />
                </div>
            </Link>
          )}
          <Link className="flex w-full font-normal text-gray_r-11 border-b border-gray_r-6 p-4 py-3" href="/shop/brands" onClick={closeMenu}>
              <span>Semua Brand</span>
              <div className="ml-auto">
                <ChevronRightIcon className="text-gray_r-12 w-5" />
              </div>
          </Link>
          <Link className="flex w-full font-normal text-gray_r-11 border-b border-gray_r-6 p-4 py-3" href="/blog" onClick={closeMenu}>
              <span>Blog Indoteknik</span>
              <div className="ml-auto">
                <ChevronRightIcon className="text-gray_r-12 w-5" />
              </div>
          </Link>
          <button className="flex w-full font-normal text-gray_r-11 border-b border-gray_r-6 p-4 py-3" onClick={closeMenu}>
              <span>Kategori</span>
              <div className="ml-auto">
                <ChevronRightIcon className="text-gray_r-12 w-5" />
              </div>
          </button>
        </div>
      </div>
      <div className={isMenuActive ? 'menu-overlay block opacity-100' : 'menu-overlay hidden opacity-0'} onClick={closeMenu}></div>

      <div className="sticky-header">
        <div className="flex justify-between items-center">
          <Link href="/" scroll={false}>
            <Image src={Logo} alt="Logo Indoteknik" width={120} height={40} />
          </Link>
          <div className="flex gap-x-4">
            <Link href="/shop/cart">
              <ShoppingCartIcon className="w-6 text-gray_r-12" />
            </Link>
            <button onClick={openMenu}>
              <Bars3Icon className="w-6 text-gray_r-12" />
            </button>
          </div>
        </div>
        <form onSubmit={searchSubmit} className="relative flex mt-2">
          <input 
            ref={searchQueryRef}
            type="text" 
            name="q" 
            onChange={(e) => setSearchQuery(e.target.value)} 
            onFocus={getSuggestion}
            value={searchQuery} 
            className="form-input rounded-r-none border-r-0 focus:border-gray_r-7" 
            placeholder="Ketikan nama, merek, part number"
            autoComplete="off"
          />

          <button 
            type="submit" 
            aria-label="search" 
            className="btn-light bg-transparent px-2 py-1 rounded-l-none border-l-0"
          >
            <MagnifyingGlassIcon className="w-6" />
          </button>

          {suggestions.length > 1 && (
            <div className="absolute w-full top-[50px] rounded-b bg-gray_r-2 border border-gray_r-6">
              {suggestions.map((suggestion, index) => (
                <p onClick={() => clickSuggestion(suggestion.term)} className="w-full p-2" key={index}>{suggestion.term}</p>
              ))}
            </div>
          )}
        </form>
      </div>

      {suggestions.length > 1 && (
        <div className="menu-overlay !z-40" onClick={() => setSuggestions([])}></div>
      )}
    </>
  )
}