"use client";
import { VERSION } from "@/lib/config";
import { usePathname } from "next/navigation";
import { Bars3Icon, UserCircleIcon, Cog6ToothIcon, QuestionMarkCircleIcon, BoltIcon } from "@heroicons/react/20/solid";
import Link from "next/link";
import { useEffect, useState, useRef } from "react";
import Image from "next/image";
import logo from "@assets/logo.png";

export default function Sidebar() {
  const pathname = usePathname();
  const [accessLevel, setAccessLevel] = useState(null);
  const [isCollapsed, setIsCollapsed] = useState(true);
  const sidebarRef = useRef(null);

  const toggleSidebar = () => {
    setIsCollapsed(!isCollapsed);
  };

  useEffect(() => {
    setAccessLevel(localStorage.getItem("a_l"));

    const handleClickOutside = (event) => {
      if (sidebarRef.current && !sidebarRef.current.contains(event.target)) {
        setIsCollapsed(true);
      }
    };

    document.addEventListener("mousedown", handleClickOutside);
    return () => document.removeEventListener("mousedown", handleClickOutside);
  }, []);

  const logoStyle = {
    width: isCollapsed ? "60px" : "150px",
    height: isCollapsed ? "60px" : "150px",
    borderRadius: "50px",
    transition: "width 0.3s ease, height 0.3s ease",
    marginBottom: 0,
    marginTop: "20px",
  };

  const sidebarStyle = {
    width: "180px",
    left: isCollapsed ? "-180px" : "0",
    backgroundColor: "var(--sidebar-background)",
    color: "var(--foreground)",
    padding: isCollapsed ? "15px" : "20px",
    position: "fixed",
    height: "100vh",
    display: "flex",
    flexDirection: "column",
    borderRight: "1px solid rgba(255, 255, 255, 0.1)",
    transition: "left 0.3s ease, width 0.3s ease, padding 0.3s ease",
    zIndex: 10,
  };

  const versionStyle = {
    color: "var(--hover-accent)",
    fontSize: isCollapsed ? "0.6em" : "0.9em",
    marginTop: "20px",
    textAlign: "end",
  };

  const navLinkStyle = {
    display: "flex",
    alignItems: "center",
    gap: "5px",
    padding: "10px 5px",
    transition: "all 0.3s ease",
    color: "var(--foreground)",
    fontSize: "1em",
  };

  const activeNavLinkStyle = {
    backgroundColor: "var(--hover-accent)",
    borderRadius: "5px",
    animation: "fadeIn .5s ease-in-out, pulse .5s ease-in-out",
  };

  const textStyle = {
    opacity: isCollapsed ? 0 : 1,
    transition: "opacity 0.3s ease",
    pointerEvents: isCollapsed ? "none" : "auto",
  };

  const iconStyle = {
    width: "30px",
    height: "30px",
    flexShrink: 0,
  };

  const toggleButtonStyle = {
    position: "absolute",
    top: "20px",
    right: isCollapsed ? "-50px" : "10px",
    width: "35px",
    height: "35px",
    backgroundColor: "var(--button-background)",
    color: "var(--foreground)",
    border: "none",
    borderRadius: "10px",
    cursor: "pointer",
    display: "flex",
    alignItems: "center",
    justifyContent: "center",
    boxShadow: "0 2px 5px rgba(0, 0, 0, 0.2)",
    transition: "background-color 0.3s ease, right 0.3s ease",
  };

  return (
    <div ref={sidebarRef} className="sidebar-container" style={sidebarStyle}>
      <div className="logo-container" style={{ display: "flex", flexDirection: "column", alignItems: "center" }}>
        <Image style={logoStyle} src={logo} alt="App Logo" />
        <sup style={versionStyle}>{VERSION}</sup>
        <button
          style={toggleButtonStyle}
          onClick={() => toggleSidebar(!isCollapsed)}
        >
          <Bars3Icon style={{ transform: `rotate(${isCollapsed ? 0 : 90}deg)`, transition: "transform .3s", width: "20px" }} />
        </button>
      </div>
      <ul className="nav-links" style={{ listStyleType: "none", marginTop: "20px", paddingLeft: "0" }}>
        <li>
          <Link href="/" legacyBehavior>
            <a style={{ ...navLinkStyle, ...(pathname === "/" && activeNavLinkStyle) }}>
              <UserCircleIcon style={iconStyle} />
              <span style={textStyle}>Profile</span>
            </a>
          </Link>
        </li>
        <li>
          <Link href={`/su/${accessLevel}`} legacyBehavior>
            <a style={{ ...navLinkStyle, ...(pathname === `/su/${accessLevel}` && activeNavLinkStyle) }}>
              <BoltIcon style={iconStyle} />
              <span style={textStyle}>{accessLevel}</span>
            </a>
          </Link>
        </li>
        <li>
          <Link href="/settings" legacyBehavior>
            <a style={{ ...navLinkStyle, ...(pathname === "/settings" && activeNavLinkStyle) }}>
              <Cog6ToothIcon style={iconStyle} />
              <span style={textStyle}>Settings</span>
            </a>
          </Link>
        </li>
        <li>
          <Link href="/support" legacyBehavior>
            <a style={{ ...navLinkStyle, ...(pathname === "/support" && activeNavLinkStyle) }}>
              <QuestionMarkCircleIcon style={iconStyle} />
              <span style={textStyle}>Support</span>
            </a>
          </Link>
        </li>
      </ul>
    </div>
  );
}