'use client';

import React, { useState, useRef, useEffect, useId } from 'react';
import Link from 'next/link';
import { useSearchParams } from 'next/navigation';
import { Club, UserPortalPermissions, ClubRole } from './types';

interface FounderTopBarProps {
  club: Club;
  permissions: UserPortalPermissions;
  activeNav?: string;
  onToggleMobileSidebar?: () => void;
  onPlanRide?: () => void;
  onPostAnnouncement?: () => void;
  onSwitchRole?: (role: ClubRole) => void;
  onSwitchClub?: () => void;
  pendingApplicationsCount?: number;
  upcomingRidesCount?: number;
}

export function FounderTopBar({
  club,
  permissions,
  activeNav,
  onToggleMobileSidebar,
  onPlanRide,
  onPostAnnouncement,
  onSwitchRole,
  onSwitchClub,
  pendingApplicationsCount,
  upcomingRidesCount,
}: FounderTopBarProps) {
  const [userMenuOpen, setUserMenuOpen] = useState(false);
  const userMenuRef = useRef<HTMLDivElement>(null);
  const [notificationsOpen, setNotificationsOpen] = useState(false);
  const notificationsRef = useRef<HTMLDivElement>(null);
  const notificationsButtonRef = useRef<HTMLButtonElement>(null);
  const notificationsId = useId();
  const searchParams = useSearchParams();
  const previewQuery = searchParams?.get('preview') === 'demo' ? '?preview=demo' : '';
  const managePath = `/clubs/${club.slug || club.id}/manage`;
  const pendingCount = permissions.canApproveApplications ? (pendingApplicationsCount ?? 0) : 0;

  useEffect(() => {
    setNotificationsOpen(false);
  }, [club.id, activeNav, permissions.role]);

  useEffect(() => {
    if (!notificationsOpen) return;
    function handleClickOutside(event: MouseEvent) {
      if (!notificationsRef.current?.contains(event.target as Node)) setNotificationsOpen(false);
    }
    function handleKeyDown(event: KeyboardEvent) {
      if (event.key === 'Escape') {
        setNotificationsOpen(false);
        notificationsButtonRef.current?.focus();
      }
    }
    function handleFocusOutside(event: FocusEvent) {
      if (!notificationsRef.current?.contains(event.target as Node)) setNotificationsOpen(false);
    }
    document.addEventListener('mousedown', handleClickOutside);
    document.addEventListener('keydown', handleKeyDown);
    document.addEventListener('focusin', handleFocusOutside);
    return () => {
      document.removeEventListener('mousedown', handleClickOutside);
      document.removeEventListener('keydown', handleKeyDown);
      document.removeEventListener('focusin', handleFocusOutside);
    };
  }, [notificationsOpen]);

  useEffect(() => {
    function handleClickOutside(event: MouseEvent) {
      if (userMenuRef.current && !userMenuRef.current.contains(event.target as Node)) {
        setUserMenuOpen(false);
      }
    }
    function handleKeyDown(event: KeyboardEvent) {
      if (event.key === 'Escape') {
        setUserMenuOpen(false);
      }
    }
    if (userMenuOpen) {
      document.addEventListener('mousedown', handleClickOutside);
      document.addEventListener('keydown', handleKeyDown);
    }
    return () => {
      document.removeEventListener('mousedown', handleClickOutside);
      document.removeEventListener('keydown', handleKeyDown);
    };
  }, [userMenuOpen]);

  return (
    <header className="fixed top-0 left-0 lg:left-72 right-0 h-16 bg-surface-container-lowest/95 backdrop-blur-md border-b border-brand-border/60 z-40">
      <div className="w-full max-w-[1536px] mx-auto h-full px-6 sm:px-8 lg:px-8 flex items-center justify-between gap-3 sm:gap-4">
        {/* Left: Mobile hamburger + Breadcrumbs + Switch Club */}
        <div className="flex items-center gap-2.5 sm:gap-4 min-w-0">
          {/* Mobile Hamburger Toggle */}
          <button
            onClick={onToggleMobileSidebar}
            className="lg:hidden text-outline hover:text-on-surface p-1 rounded-lg hover:bg-surface-container transition-colors shrink-0"
            aria-label="Open sidebar"
          >
            <span className="material-symbols-outlined text-[22px]">menu</span>
          </button>

          <div className="flex items-center gap-1.5 sm:gap-2 font-mono text-xs text-outline min-w-0">
            <Link href="/clubs" className="hover:text-on-surface transition-colors shrink-0">
              Clubs
            </Link>
            <span className="shrink-0">/</span>
            <Link
              href={`/clubs/${club.slug || club.id}/manage`}
              className="text-on-surface font-semibold truncate max-w-[110px] sm:max-w-[160px] lg:max-w-[140px] xl:max-w-none hover:text-brand-cyan transition-colors"
            >
              {club.name}
            </Link>
            {activeNav === 'profile' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span className="text-brand-cyan font-semibold truncate">Club Profile</span>
              </>
            )}
            {(activeNav === 'members' || activeNav === 'wall') && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span className="text-brand-cyan font-semibold truncate">{activeNav === 'members' ? 'Members' : 'Wall'}</span>
              </>
            )}
            {activeNav === 'applications' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span data-breadcrumb="APPLICATIONS" className="text-brand-cyan font-semibold truncate">Applications</span>
              </>
            )}
            {activeNav === 'ranks_roles' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span className="text-brand-cyan font-semibold truncate">Ranks &amp; Roles</span>
              </>
            )}
            {activeNav === 'rides' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span data-breadcrumb="RIDES" className="text-brand-cyan font-semibold truncate">Rides</span>
              </>
            )}
            {activeNav === 'stats' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span className="text-brand-cyan font-semibold truncate">Stats</span>
              </>
            )}
            {activeNav === 'moderation' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span className="text-brand-cyan font-semibold truncate">Moderation</span>
              </>
            )}
            {activeNav === 'settings' && (
              <>
                <span className="text-outline-variant shrink-0">/</span>
                <span className="text-brand-cyan font-semibold truncate">Settings</span>
              </>
            )}
          </div>

          <div className="relative flex items-center shrink-0">
            <button
              onClick={onSwitchClub}
              className="flex items-center gap-1.5 px-2.5 py-1 rounded-lg bg-surface-container border border-brand-border/60 text-slate-200 font-body text-xs hover:bg-surface-container-high transition-colors"
            >
              <span className="material-symbols-outlined text-[15px] text-brand-cyan">swap_horiz</span>
              <span className="hidden sm:inline lg:hidden xl:inline">Switch Club</span>
              <span className="material-symbols-outlined text-[15px] text-outline hidden sm:inline lg:hidden xl:inline">expand_more</span>
            </button>
          </div>
        </div>

        {/* Middle: Search Input (desktop/tablet only, hidden on lg to prevent crush) */}
        <div className="flex-1 max-w-xs mx-2 lg:mx-4 min-w-0 hidden md:block lg:hidden xl:block">
          <div className="relative">
            <span className="material-symbols-outlined absolute left-3 top-1/2 -translate-y-1/2 text-outline text-[17px]">
              search
            </span>
            <input
              className="w-full h-8 pl-9 pr-3 rounded-lg bg-surface-container-low border border-brand-border/60 text-on-surface placeholder:text-outline/70 font-body text-xs focus:outline-none focus:border-brand-cyan transition-colors"
              placeholder="Search members, rides, routes..."
              type="text"
              aria-label="Search members, rides, routes"
            />
          </div>
        </div>

        {/* Right: Actions + Role Switcher preview pill + Notifications + Profile */}
        <div className="flex items-center gap-2 sm:gap-2.5 shrink-0 flex-wrap justify-end">
          {/* Authoritative Role Badge (Production) vs Interactive Role Switcher (Development Only) */}
          {process.env.NODE_ENV === 'development' ? (
            <div
              className="hidden 2xl:flex items-center gap-1 px-2 py-0.5 rounded-lg bg-surface-container-high border border-brand-border/60 text-[11px] font-mono text-outline"
              title="Interactive role preview for testing software permissions (Development Only)"
            >
              <span className="text-outline-variant">Dev Preview:</span>
              {(['owner', 'admin', 'member'] as const).map((r) => (
                <button
                  key={r}
                  onClick={() => onSwitchRole?.(r)}
                  className={`px-1.5 py-0.5 rounded capitalize font-semibold transition-colors ${
                    permissions.role === r
                      ? 'bg-primary-container text-on-primary-container font-bold'
                      : 'hover:text-on-surface'
                  }`}
                >
                  {r}
                </button>
              ))}
            </div>
          ) : (
            <div
              className="hidden sm:flex lg:hidden xl:flex items-center gap-1.5 px-2.5 py-1 rounded-full bg-surface-container border border-brand-border/60 text-[11px] font-mono text-outline capitalize font-medium"
              title="Authoritative software role"
            >
              <span className="w-1.5 h-1.5 rounded-full bg-brand-cyan" />
              <span className="text-on-surface font-semibold">{permissions.role}</span>
            </div>
          )}

          {/* Post Announcement (Owner / Admin only) */}
          {permissions.canManageSettings && (
            <button
              onClick={onPostAnnouncement}
              className="hidden xl:flex items-center gap-1.5 px-3 py-1.5 rounded-xl bg-surface-container border border-brand-border/60 text-slate-200 font-body text-xs font-medium hover:bg-surface-container-high transition-colors"
            >
              <span className="material-symbols-outlined text-[15px] text-brand-cyan">campaign</span>
              <span>Post Announcement</span>
            </button>
          )}

          {/* Plan Club Ride (Owner / Admin only) */}
          {permissions.canPlanRides && (
            <button
              onClick={onPlanRide}
              className="flex items-center gap-1.5 px-3 sm:px-3.5 py-1.5 rounded-xl bg-primary-container text-on-primary-container font-body text-xs font-bold hover:brightness-110 shadow-[0_0_12px_rgba(0,242,254,0.25)] transition-all shrink-0"
            >
              <span className="material-symbols-outlined text-[15px]">add_road</span>
              <span className="hidden sm:inline lg:hidden xl:inline">Plan Club Ride</span>
            </button>
          )}

          {/* Notifications */}
          <div ref={notificationsRef} className="relative ml-0.5 sm:ml-1 shrink-0">
            <button
              ref={notificationsButtonRef}
              type="button"
              onClick={() => {
                setUserMenuOpen(false);
                setNotificationsOpen((open) => !open);
              }}
              className="w-8 h-8 rounded-xl bg-surface-container border border-brand-border/60 flex items-center justify-center text-outline hover:text-on-surface transition-colors"
              title="Notifications"
              aria-label="Notifications"
              aria-expanded={notificationsOpen}
              aria-controls={notificationsId}
            >
              <span className="material-symbols-outlined text-[18px]">notifications</span>
            </button>
            {pendingCount > 0 && <span aria-label={`${pendingCount} pending applications`} className="pointer-events-none absolute top-0 right-0 w-2 h-2 rounded-full bg-error" />}
            {notificationsOpen && (
              <section id={notificationsId} aria-label="Club updates"
                className="fixed top-20 right-4 w-80 max-w-[calc(100vw-2rem)] sm:absolute sm:top-full sm:right-0 sm:mt-3 rounded-2xl bg-surface-container-lowest border border-brand-border shadow-2xl p-4 z-50">
                <div className="flex items-center justify-between gap-3 mb-3">
                  <h2 className="font-headline text-sm font-semibold text-white">Club updates</h2>
                  <button type="button" aria-label="Close notifications" className="p-1 text-outline hover:text-white" onClick={() => {
                    setNotificationsOpen(false); notificationsButtonRef.current?.focus();
                  }}><span aria-hidden="true" className="material-symbols-outlined text-lg">close</span></button>
                </div>
                <p className="text-xs text-on-surface-variant mb-3">{permissions.canManageSettings ? 'Open a section to review current club activity.' : 'Club management updates are available to Owners and Admins.'}</p>
                <div className="space-y-2">
                  {permissions.canApproveApplications && <Link href={`${managePath}/applications${previewQuery}`} onClick={() => setNotificationsOpen(false)} className="block rounded-xl border border-brand-border p-3 hover:border-brand-cyan focus-visible:outline focus-visible:outline-brand-cyan">
                    <span className="block text-sm text-brand-cyan font-semibold">{pendingCount > 0 ? `${pendingCount} pending ${pendingCount === 1 ? 'application' : 'applications'}` : 'Membership applications'}</span>
                    <span className="block text-xs text-outline mt-1">Review membership requests.</span>
                  </Link>}
                  {permissions.canPlanRides && <Link href={`${managePath}/rides${previewQuery}`} onClick={() => setNotificationsOpen(false)} className="block rounded-xl border border-brand-border p-3 hover:border-brand-cyan focus-visible:outline focus-visible:outline-brand-cyan">
                    <span className="block text-sm text-brand-cyan font-semibold">{upcomingRidesCount && upcomingRidesCount > 0 ? `${upcomingRidesCount} upcoming ${upcomingRidesCount === 1 ? 'ride' : 'rides'}` : 'Upcoming rides'}</span>
                    <span className="block text-xs text-outline mt-1">See scheduled club rides.</span>
                  </Link>}
                  {permissions.canManageSettings && <Link href={`${managePath}/wall${previewQuery}`} onClick={() => setNotificationsOpen(false)} className="block rounded-xl border border-brand-border p-3 hover:border-brand-cyan focus-visible:outline focus-visible:outline-brand-cyan">
                    <span className="block text-sm text-brand-cyan font-semibold">Club Wall</span>
                    <span className="block text-xs text-outline mt-1">Read announcements and discussions.</span>
                  </Link>}
                </div>
              </section>
            )}
          </div>

          {/* Rider Profile Menu Dropdown */}
          <div className="relative shrink-0 ml-0.5" ref={userMenuRef}>
            <button
              type="button"
              onClick={() => { setNotificationsOpen(false); setUserMenuOpen(!userMenuOpen); }}
              className={`w-8 h-8 rounded-xl bg-surface-container-low hover:bg-surface-container-high border transition-all flex items-center justify-center cursor-pointer ${
                userMenuOpen
                  ? 'border-primary-container ring-2 ring-primary-container/20'
                  : 'border-brand-border/60 hover:border-brand-cyan/50'
              }`}
              title="Rider Menu"
              aria-label="Open rider menu"
              aria-expanded={userMenuOpen}
              aria-haspopup="menu"
            >
              <span className="material-symbols-outlined text-primary-container text-[18px]">
                person
              </span>
            </button>

            {userMenuOpen && (
              <div
                role="menu"
                aria-orientation="vertical"
                className="absolute right-0 mt-2 w-60 rounded-2xl bg-surface-container-lowest/95 backdrop-blur-2xl border border-brand-border/80 shadow-2xl p-2 z-50 animate-in fade-in slide-in-from-top-2 flex flex-col gap-1"
              >
                <div className="px-3 py-2 border-b border-brand-border/40 mb-1">
                  <span className="font-headline text-xs font-semibold text-white block">
                    {club.founderName || 'Rider Account'}
                  </span>
                  <span className="font-mono text-[10px] text-brand-cyan">
                    {permissions.role === 'owner' ? 'Club Owner' : permissions.role === 'admin' ? 'Club Admin' : 'Club Member'}
                  </span>
                </div>

                <Link
                  href="/account"
                  onClick={() => setUserMenuOpen(false)}
                  role="menuitem"
                  className="flex items-center gap-3 px-3 py-2.5 rounded-xl text-slate-200 hover:text-brand-cyan hover:bg-surface-container transition-colors text-xs font-semibold"
                >
                  <span className="material-symbols-outlined text-[18px] text-brand-cyan">
                    person
                  </span>
                  <span>Rider Account</span>
                </Link>

                <Link
                  href="/group-rides"
                  onClick={() => setUserMenuOpen(false)}
                  role="menuitem"
                  className="flex items-center gap-3 px-3 py-2.5 rounded-xl text-slate-200 hover:text-brand-cyan hover:bg-surface-container transition-colors text-xs font-semibold"
                >
                  <span className="material-symbols-outlined text-[18px] text-brand-cyan">
                    groups
                  </span>
                  <span>Group Rides</span>
                </Link>

                <Link
                  href="/clubs/manage"
                  onClick={() => setUserMenuOpen(false)}
                  role="menuitem"
                  className="flex items-center gap-3 px-3 py-2.5 rounded-xl text-slate-200 hover:text-brand-cyan hover:bg-surface-container transition-colors text-xs font-semibold"
                >
                  <span className="material-symbols-outlined text-[18px] text-brand-cyan">
                    shield
                  </span>
                  <span>Founder Portal</span>
                </Link>

                {(permissions.role === 'owner' || permissions.role === 'admin') && (
                  <Link
                    href="/admin"
                    onClick={() => setUserMenuOpen(false)}
                    role="menuitem"
                    className="flex items-center gap-3 px-3 py-2.5 rounded-xl text-slate-200 hover:text-brand-cyan hover:bg-surface-container transition-colors text-xs font-semibold"
                  >
                    <span className="material-symbols-outlined text-[18px] text-brand-cyan">
                      admin_panel_settings
                    </span>
                    <span>Operations Admin</span>
                  </Link>
                )}

                <div className="border-t border-brand-border/40 my-1" />

                <button
                  type="button"
                  role="menuitem"
                  onClick={async () => {
                    setUserMenuOpen(false);
                    try {
                      await fetch('/api/auth/logout', { method: 'POST' });
                    } catch {}
                    try {
                      const { firebaseAuth } = await import('../../lib/firebase-client');
                      await firebaseAuth.signOut();
                    } catch {}
                    window.location.assign('/login');
                  }}
                  className="w-full flex items-center gap-3 px-3 py-2.5 rounded-xl text-error/80 hover:text-error hover:bg-error-container/10 transition-colors text-xs font-semibold text-left cursor-pointer"
                >
                  <span className="material-symbols-outlined text-[18px]">logout</span>
                  <span>Sign Out</span>
                </button>
              </div>
            )}
          </div>
        </div>
      </div>
    </header>
  );
}