'use client';

import { useState } from 'react';
import {
  Box,
  Container,
  Chip,
  Tooltip,
  IconButton,
  Menu,
  MenuItem,
  ListItemIcon,
  ListItemText,
  Avatar,
  Divider,
} from '@mui/material';
import { MobileNav } from '../MobileNav/MobileNav';
import { TabBar } from '../TabBar/TabBar';
import { useMediaQuery } from '@/hooks/useMediaQuery';
import { ReactNode } from 'react';
import { useWebSocket } from '@/hooks/useWebSocket';
import { Wifi, WifiOff, People, AccountCircle, Settings, ChildCare, Group, Logout } from '@mui/icons-material';
import { useTranslation } from '@/hooks/useTranslation';
import { useRouter } from 'next/navigation';
import { useAuth } from '@/lib/auth/AuthContext';

interface AppShellProps {
  children: ReactNode;
}

export const AppShell = ({ children }: AppShellProps) => {
  const { t } = useTranslation('common');
  const router = useRouter();
  const { user, logout } = useAuth();
  const isMobile = useMediaQuery('(max-width: 768px)');
  const isTablet = useMediaQuery('(max-width: 1024px)');
  const { isConnected, presence } = useWebSocket();
  const [anchorEl, setAnchorEl] = useState<null | HTMLElement>(null);

  const handleMenuOpen = (event: React.MouseEvent<HTMLElement>) => {
    setAnchorEl(event.currentTarget);
  };

  const handleMenuClose = () => {
    setAnchorEl(null);
  };

  const handleNavigate = (path: string) => {
    handleMenuClose();
    router.push(path);
  };

  const handleLogout = async () => {
    handleMenuClose();
    await logout();
    router.push('/login');
  };

  return (
    <Box sx={{
      display: 'flex',
      flexDirection: 'column',
      minHeight: '100vh',
      bgcolor: 'background.default',
      pb: '64px', // Space for tab bar on both mobile and desktop
    }}>
      {/* Header Bar - Both Mobile and Desktop */}
      <Box
        sx={{
          position: 'fixed',
          top: 0,
          left: 0,
          right: 0,
          height: 48,
          bgcolor: 'background.paper',
          borderBottom: '1px solid',
          borderColor: 'divider',
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'space-between',
          px: 2,
          zIndex: 1200,
          boxShadow: 1,
        }}
      >
        {/* Left Side - Family Members Online Indicator */}
        <Box>
          {isConnected && presence.count > 1 && (
            <Tooltip title={t('connection.familyMembersOnline', { count: presence.count })}>
              <Chip
                icon={<People />}
                label={presence.count}
                size="small"
                color="primary"
                sx={{
                  fontWeight: 600,
                }}
              />
            </Tooltip>
          )}
        </Box>

        {/* Right Side - User Menu Button with Status Indicator */}
        <Tooltip title={isConnected ? t('connection.syncActive') : t('connection.syncDisconnected')}>
          <IconButton
            onClick={handleMenuOpen}
            size="medium"
            aria-label="user menu"
            aria-controls={anchorEl ? 'user-menu' : undefined}
            aria-haspopup="true"
            aria-expanded={anchorEl ? 'true' : undefined}
            sx={{
              minWidth: 44,
              minHeight: 44,
              position: 'relative',
            }}
          >
            <Avatar
              src={user?.photoUrl}
              sx={{
                width: 36,
                height: 36,
                bgcolor: 'primary.main',
                fontSize: '0.875rem',
              }}
            >
              {user?.name?.charAt(0).toUpperCase() || 'U'}
            </Avatar>
            {/* Status Dot Indicator */}
            <Box
              sx={{
                position: 'absolute',
                bottom: 2,
                right: 2,
                width: 12,
                height: 12,
                borderRadius: '50%',
                bgcolor: isConnected ? '#4caf50' : '#9e9e9e',
                border: '2px solid',
                borderColor: 'background.paper',
                boxShadow: 1,
              }}
              aria-label={isConnected ? 'Online' : 'Offline'}
            />
          </IconButton>
        </Tooltip>

        <Menu
          id="user-menu"
          anchorEl={anchorEl}
          open={Boolean(anchorEl)}
          onClose={handleMenuClose}
          onClick={handleMenuClose}
          transformOrigin={{ horizontal: 'right', vertical: 'top' }}
          anchorOrigin={{ horizontal: 'right', vertical: 'bottom' }}
          sx={{
            mt: 1,
          }}
        >
          <MenuItem onClick={() => handleNavigate('/settings')}>
            <ListItemIcon>
              <Settings fontSize="small" />
            </ListItemIcon>
            <ListItemText>{t('navigation.settings')}</ListItemText>
          </MenuItem>
          <MenuItem onClick={() => handleNavigate('/children')}>
            <ListItemIcon>
              <ChildCare fontSize="small" />
            </ListItemIcon>
            <ListItemText>{t('navigation.children')}</ListItemText>
          </MenuItem>
          <MenuItem onClick={() => handleNavigate('/family')}>
            <ListItemIcon>
              <Group fontSize="small" />
            </ListItemIcon>
            <ListItemText>{t('navigation.family')}</ListItemText>
          </MenuItem>
          <Divider />
          <MenuItem onClick={handleLogout}>
            <ListItemIcon>
              <Logout fontSize="small" color="error" />
            </ListItemIcon>
            <ListItemText>{t('navigation.logout')}</ListItemText>
          </MenuItem>
        </Menu>
      </Box>

      <Container
        maxWidth={isTablet ? 'md' : 'lg'}
        sx={{
          flex: 1,
          px: { xs: 2, md: 3 },
          py: 3,
          pt: '64px', // Add top padding for header bar on both mobile and desktop
        }}
      >
        {children}
      </Container>

      <TabBar />
    </Box>
  );
};
