import { useState } from "react";
import { Link } from "react-router-dom";
import { MoonStars, Sun, List } from "react-bootstrap-icons";

import NavItem from "./NavItem";
import Logo from "./logo";

function Navigation() {
  const [darkTheme, setDarkTheme] = useState<boolean>(
    localStorage.theme === "dark" ||
    (!("theme" in localStorage) &&
      window.matchMedia("(prefers-color-scheme: dark)").matches)
  );

  const [showMenu, setShowMenu] = useState(false);

  if (darkTheme) {
    document.documentElement.classList.add("dark");
  } else {
    document.documentElement.classList.remove("dark");
  }

  const storeTheme = (useDarkTheme: boolean | null) => {
    if (useDarkTheme === null) {
      localStorage.removeItem("theme");
    } else {
      localStorage.setItem("theme", useDarkTheme ? "dark" : "light");
    }
  };

  return (
    <>
      <div className="bg-white/75 dark:bg-slate-800/75 w-full backdrop-blur border-slate-200 dark:border-slate-700 border-b">
        <div className="max-w-8xl mx-auto">
          <div className="py-4 mx-4">
            <div className="flex items-center">
              <Link to="/">
                <Logo />
              </Link>
              <div className="ml-auto flex items-center">
                <nav className="hidden lg:flex">
                  <ul className="flex space-x-4 font-bold">
                    <NavItem to="/">Home</NavItem>
                    <NavItem to="/">Link 2</NavItem>
                    <NavItem to="/">Link 3</NavItem>
                    <NavItem to="/">Link 4</NavItem>
                    <NavItem to="/">Link 5</NavItem>
                    <NavItem to="/login">Log in</NavItem>
                  </ul>
                </nav>
                <div className="flex border-l border-slate-200 ml-4 pl-4 lg:ml-6 lg:pl-6 lg:mr-2 dark:border-slate-700 space-x-2 lg:space-x-4">
                  <div
                    onClick={() => {
                      setDarkTheme(!darkTheme);
                      storeTheme(!darkTheme);
                    }}
                    title={
                      darkTheme ? "Switch to light mode" : "Switch to dark mode"
                    }
                    className="cursor-pointer"
                  >
                    {darkTheme ? (
                      <Sun className="hover:text-sky-400" size={24} />
                    ) : (
                      <MoonStars size={24} className="hover:text-sky-500" />
                    )}
                  </div>
                  <div onClick={() => setShowMenu(!showMenu)} title="Show menu" className="cursor-pointer flex lg:hidden">
                    <List className="dark:hover:text-sky-400 hover:text-sky-500" size={24} />
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
      <nav className={`lg:hidden p-4 border-slate-200 dark:border-slate-700 border-b ${showMenu ? "flex" : "hidden"}`}>
        <ul className="flex flex-col space-y-4 font-bold">
          <NavItem to="/">Home</NavItem>
          <NavItem to="/">Link 2</NavItem>
          <NavItem to="/">Link 3</NavItem>
          <NavItem to="/">Link 4</NavItem>
          <NavItem to="/">Link 5</NavItem>
          <NavItem to="/login">Log in</NavItem>
        </ul>
      </nav>
    </>
  );
}

export default Navigation;