import { h } from 'preact';
import Link from './components/Link';
import { Link as RouterLink } from 'preact-router/match';
import { useCallback, useState } from 'preact/hooks';

function HamburgerIcon() {
  return (
    <svg fill="currentColor" viewBox="0 0 20 20" className="w-6 h-6">
      <path
        fill-rule="evenodd"
        d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z"
        clip-rule="evenodd"
      ></path>
    </svg>
  );
}

function CloseIcon() {
  return (
    <svg fill="currentColor" viewBox="0 0 20 20" className="w-6 h-6">
      <path
        fill-rule="evenodd"
        d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z"
        clip-rule="evenodd"
      ></path>
    </svg>
  );
}

function NavLink({ className = '', href, text }) {
  const external = href.startsWith('http');
  const El = external ? Link : RouterLink;
  const props = external ? { rel: 'noopener nofollow', target: '_blank' } : {};
  return (
    <El
      activeClassName="bg-gray-200 dark:bg-gray-700 dark:hover:bg-gray-600 dark:focus:bg-gray-600 dark:focus:text-white dark:hover:text-white dark:text-gray-200"
      className={`block px-4 py-2 mt-2 text-sm font-semibold text-gray-900 bg-transparent rounded-lg dark:bg-transparent dark:hover:bg-gray-600 dark:focus:bg-gray-600 dark:focus:text-white dark:hover:text-white dark:text-gray-200 hover:text-gray-900 focus:text-gray-900 hover:bg-gray-200 focus:bg-gray-200 focus:outline-none focus:shadow-outline self-end ${className}`}
      href={href}
      {...props}
    >
      {text}
    </El>
  );
}

export default function Sidebar() {
  const [open, setOpen] = useState(false);

  const handleToggle = useCallback(() => {
    setOpen(!open);
  }, [open, setOpen]);

  return (
    <div className="flex flex-col w-full md:w-64 text-gray-700 bg-white dark:text-gray-200 dark:bg-gray-700 flex-shrink-0">
      <div className="flex-shrink-0 px-8 py-4 flex flex-row items-center justify-between">
        <a
          href="#"
          className="text-lg font-semibold tracking-widest text-gray-900 uppercase rounded-lg dark:text-white focus:outline-none focus:shadow-outline"
        >
          Frigate
        </a>
        <button
          className="rounded-lg md:hidden rounded-lg focus:outline-none focus:shadow-outline"
          onClick={handleToggle}
        >
          {open ? <CloseIcon /> : <HamburgerIcon />}
        </button>
      </div>
      <nav
        className={`flex-col flex-grow md:block overflow-hidden px-4 pb-4 md:pb-0 md:overflow-y-auto ${
          !open ? 'md:h-0 hidden' : ''
        }`}
      >
        <NavLink href="/" text="Cameras" />
        <NavLink href="/events" text="Events" />
        <NavLink href="/debug" text="Debug" />
        <hr className="border-solid border-gray-500 mt-2" />
        <NavLink
          className="self-end"
          href="https://github.com/blakeblackshear/frigate/blob/master/README.md"
          text="Documentation"
        />
        <NavLink className="self-end" href="https://github.com/blakeblackshear/frigate" text="GitHub" />
      </nav>
    </div>
  );
}
