'use client';

import { useState } from 'react';
import { Alert, Button, Snackbar, Box } from '@mui/material';
import { Email } from '@mui/icons-material';
import { useAuth } from '@/lib/auth/AuthContext';
import apiClient from '@/lib/api/client';

export const EmailVerificationBanner: React.FC = () => {
  const { user } = useAuth();
  const [dismissed, setDismissed] = useState(false);
  const [loading, setLoading] = useState(false);
  const [snackbar, setSnackbar] = useState<{ open: boolean; message: string; severity: 'success' | 'error' }>({
    open: false,
    message: '',
    severity: 'success',
  });

  // Don't show if user is not logged in, email is verified, or banner was dismissed
  if (!user || user.emailVerified || dismissed) {
    return null;
  }

  const handleResendVerification = async () => {
    setLoading(true);
    try {
      await apiClient.post('/api/v1/auth/email/send-verification');
      setSnackbar({
        open: true,
        message: 'Verification email sent! Please check your inbox.',
        severity: 'success',
      });
    } catch (error: any) {
      console.error('Failed to resend verification email:', error);
      setSnackbar({
        open: true,
        message: error.response?.data?.message || 'Failed to send verification email. Please try again.',
        severity: 'error',
      });
    } finally {
      setLoading(false);
    }
  };

  const handleDismiss = () => {
    setDismissed(true);
    // Store dismissal in localStorage to persist across sessions
    localStorage.setItem('emailVerificationBannerDismissed', 'true');
  };

  return (
    <>
      <Alert
        severity="warning"
        icon={<Email />}
        onClose={handleDismiss}
        sx={{
          borderRadius: 2,
          mb: 2,
          '& .MuiAlert-message': {
            width: '100%',
          },
        }}
      >
        <Box
          sx={{
            display: 'flex',
            alignItems: 'center',
            justifyContent: 'space-between',
            gap: 2,
            flexWrap: 'wrap',
          }}
        >
          <Box>
            <strong>Verify your email address</strong>
            <br />
            Please check your inbox and click the verification link to access all features.
          </Box>
          <Button
            variant="outlined"
            size="small"
            onClick={handleResendVerification}
            disabled={loading}
            sx={{
              borderRadius: 2,
              textTransform: 'none',
              fontWeight: 600,
              borderColor: 'warning.main',
              color: 'warning.dark',
              '&:hover': {
                borderColor: 'warning.dark',
                bgcolor: 'warning.light',
              },
            }}
          >
            {loading ? 'Sending...' : 'Resend Email'}
          </Button>
        </Box>
      </Alert>

      <Snackbar
        open={snackbar.open}
        autoHideDuration={6000}
        onClose={() => setSnackbar({ ...snackbar, open: false })}
        anchorOrigin={{ vertical: 'bottom', horizontal: 'center' }}
      >
        <Alert
          severity={snackbar.severity}
          onClose={() => setSnackbar({ ...snackbar, open: false })}
          sx={{ borderRadius: 2 }}
        >
          {snackbar.message}
        </Alert>
      </Snackbar>
    </>
  );
};