import { useEffect, useState } from 'react';
import { Link, Outlet, useLocation, useNavigate } from 'react-router-dom';
import { useAuthStore, type UserStatus } from '../stores/auth.ts';
import { useWebSocketStore } from '../stores/ws.ts';
import { useServerStore } from '../stores/server.ts';
import { ServerBar } from './ServerBar.tsx';
import { ChannelList } from './ChannelList.tsx';
import { ConversationList } from './ConversationList.tsx';
import { MemberList } from './MemberList.tsx';
import { VoicePanel } from './VoicePanel.tsx';
import { ServerSettingsModal } from './ServerSettingsModal.tsx';
const STATUS_CYCLE: UserStatus[] = ['online', 'idle', 'dnd', 'offline'];
function statusColor(status: UserStatus): string {
  switch (status) {
    case 'online':
      return 'bg-gb-green';
    case 'idle':
      return 'bg-gb-yellow';
    case 'dnd':
      return 'bg-gb-red';
    default:
      return 'bg-gb-gray';
  }
}
function statusLabel(status: UserStatus): string {
  return status.toUpperCase();
}
export function Layout() {
  const isAuthenticated = useAuthStore((state) => state.isAuthenticated);
  const isLoading = useAuthStore((state) => state.isLoading);
  const user = useAuthStore((state) => state.user);
  const fetchMe = useAuthStore((state) => state.fetchMe);
  const logout = useAuthStore((state) => state.logout);
  const updateProfile = useAuthStore((state) => state.updateProfile);
  const wsConnect = useWebSocketStore((s) => s.connect);
  const wsDisconnect = useWebSocketStore((s) => s.disconnect);
  const setActiveServer = useServerStore((s) => s.setActiveServer);
  const navigate = useNavigate();
  const location = useLocation();
  const [showStatusMenu, setShowStatusMenu] = useState(false);
  const [dmMode, setDmMode] = useState(false);
  const [showServerSettings, setShowServerSettings] = useState(false);
  const activeServerId = useServerStore((s) => s.activeServerId);
  useEffect(() => {
    fetchMe();
    wsConnect();
    return () => { wsDisconnect(); };
  }, [fetchMe, wsConnect, wsDisconnect]);
  useEffect(() => {
    if (!isLoading && !isAuthenticated && location.pathname !== '/login') {
      navigate('/login', { replace: true });
    }
  }, [isLoading, isAuthenticated, location.pathname, navigate]);
  const handleStatusChange = async (status: UserStatus) => {
    setShowStatusMenu(false);
    try {
      await updateProfile({ status });
    } catch (err) {
      // Error is surfaced via auth store; menu closes optimistically.
    }
  };
  const currentStatus = user?.status ?? 'offline';
  if (isLoading) {
    return (
      <div className="h-full w-full flex items-center justify-center bg-gb-bg text-gb-fg-f font-mono">
        [booting...]
      </div>
    );
  }
  if (!isAuthenticated) {
    return null;
  }
  return (
    <div className="h-full w-full bg-gb-bg text-gb-fg font-mono flex flex-col p-2">
      <div className="flex-1 terminal-border bg-gb-bg-h flex flex-col min-h-0">
        <div className="flex items-center justify-between px-3 py-1 border-b border-gb-bg-t bg-gb-bg-s">
          <span className="text-gb-orange font-bold">DUMPSTER</span>
          <div className="flex items-center gap-4 text-xs text-gb-fg-s">
            <div className="relative">
              <button
                type="button"
                onClick={() => setShowStatusMenu((prev) => !prev)}
                className="flex items-center gap-2 hover:text-gb-fg transition-colors"
                title="Change status"
              >
                <span className={`w-2.5 h-2.5 rounded-full ${statusColor(currentStatus)}`} />
                <span className="text-gb-aqua">{user?.username || 'unknown'}</span>
                <span className="text-gb-fg-f">[{statusLabel(currentStatus)}]</span>
              </button>
              {showStatusMenu && (
                <div className="absolute right-0 top-full mt-1 z-50 w-32 bg-gb-bg-s border border-gb-bg-t shadow-lg">
                  {STATUS_CYCLE.map((s) => (
                    <button
                      key={s}
                      type="button"
                      onClick={() => handleStatusChange(s)}
                      className="w-full px-2 py-1 text-left text-xs font-mono flex items-center gap-2 hover:bg-gb-orange hover:text-gb-bg transition-colors"
                    >
                      <span className={`w-2 h-2 rounded-full ${statusColor(s)}`} />
                      <span>{statusLabel(s)}</span>
                    </button>
                  ))}
                </div>
              )}
            </div>
            <Link to="/settings" className="terminal-button text-xs">[SETTINGS]</Link>
            {activeServerId && (
              <button
                onClick={() => setShowServerSettings(true)}
                className="terminal-button text-xs"
              >
                [SERVER SETTINGS]
              </button>
            )}
            <button onClick={() => logout().then(() => navigate('/login'))} className="terminal-button text-xs">
              [LOGOUT]
            </button>
          </div>
        </div>
        <div className="flex-1 flex min-h-0">
          <div className="flex flex-col items-center w-16 bg-gb-bg-h border-r border-gb-bg-t py-2 gap-2 shrink-0">
            <button
              onClick={() => setDmMode(false)}
              className={`w-11 h-11 flex items-center justify-center font-mono text-xs border rounded ${
                !dmMode
                  ? 'bg-gb-bg-t text-gb-orange border-gb-orange'
                  : 'bg-gb-bg-s text-gb-fg border-gb-bg-t hover:border-gb-fg-t'
              }`}
              title="Servers"
            >
              [S]
            </button>
            <button
              onClick={() => {
                setDmMode(true);
                setActiveServer(null);
              }}
              className={`w-11 h-11 flex items-center justify-center font-mono text-xs border rounded ${
                dmMode
                  ? 'bg-gb-bg-t text-gb-orange border-gb-orange'
                  : 'bg-gb-bg-s text-gb-fg border-gb-bg-t hover:border-gb-fg-t'
              }`}
              title="Direct Messages"
            >
              [@]
            </button>
          </div>
          <ServerBar />
          {dmMode ? <ConversationList /> : <ChannelList />}
          <div className="flex-1 min-w-0 flex flex-col">
            <div className="flex-1 min-h-0 flex flex-col overflow-hidden">
              <VoicePanel />
              <div className="flex-1 min-h-0">
                <Outlet />
              </div>
            </div>
          </div>
          {!dmMode && <MemberList />}
        </div>
        {showServerSettings && activeServerId && (
          <ServerSettingsModal serverId={activeServerId} onClose={() => setShowServerSettings(false)} />
        )}
        <div className="px-3 py-1 border-t border-gb-bg-t text-xs text-gb-fg-f flex justify-between bg-gb-bg-s">
          <span>TERM v1.0</span>
          <span>{new Date().toISOString().slice(0, 10)}</span>
        </div>
      </div>
    </div>
  );
}