/**
 * @ai-summary Security settings page for desktop application
 */

import React from 'react';
import { useNavigate } from 'react-router-dom';
import { useSecurityStatus, useRequestPasswordReset } from '../features/settings/hooks/useSecurity';
import {
  Box,
  Typography,
  List,
  ListItem,
  ListItemIcon,
  ListItemText,
  Divider,
  Button as MuiButton,
  CircularProgress,
  Alert,
  Chip,
} from '@mui/material';
import ArrowBackIcon from '@mui/icons-material/ArrowBack';
import LockIcon from '@mui/icons-material/Lock';
import VerifiedUserIcon from '@mui/icons-material/VerifiedUser';
import FingerprintIcon from '@mui/icons-material/Fingerprint';
import EmailIcon from '@mui/icons-material/Email';
import { Card } from '../shared-minimal/components/Card';

export const SecuritySettingsPage: React.FC = () => {
  const navigate = useNavigate();
  const { data: securityStatus, isLoading, error } = useSecurityStatus();
  const passwordResetMutation = useRequestPasswordReset();

  const handlePasswordReset = () => {
    passwordResetMutation.mutate();
  };

  const handleBack = () => {
    navigate('/garage/settings');
  };

  if (isLoading) {
    return (
      <Box sx={{ py: 2 }}>
        <Box sx={{ display: 'flex', alignItems: 'center', mb: 4 }}>
          <MuiButton
            startIcon={<ArrowBackIcon />}
            onClick={handleBack}
            sx={{ mr: 2 }}
          >
            Back
          </MuiButton>
          <Typography variant="h4" sx={{ fontWeight: 700, color: 'text.primary' }}>
            Security Settings
          </Typography>
        </Box>
        <Box sx={{ display: 'flex', justifyContent: 'center', py: 8 }}>
          <CircularProgress />
        </Box>
      </Box>
    );
  }

  if (error) {
    return (
      <Box sx={{ py: 2 }}>
        <Box sx={{ display: 'flex', alignItems: 'center', mb: 4 }}>
          <MuiButton
            startIcon={<ArrowBackIcon />}
            onClick={handleBack}
            sx={{ mr: 2 }}
          >
            Back
          </MuiButton>
          <Typography variant="h4" sx={{ fontWeight: 700, color: 'text.primary' }}>
            Security Settings
          </Typography>
        </Box>
        <Alert severity="error" sx={{ mb: 2 }}>
          Failed to load security settings. Please try again.
        </Alert>
      </Box>
    );
  }

  return (
    <Box sx={{ py: 2 }}>
      <Box sx={{ display: 'flex', alignItems: 'center', mb: 4 }}>
        <MuiButton
          startIcon={<ArrowBackIcon />}
          onClick={handleBack}
          sx={{ mr: 2 }}
        >
          Back
        </MuiButton>
        <Typography variant="h4" sx={{ fontWeight: 700, color: 'text.primary' }}>
          Security Settings
        </Typography>
      </Box>

      <Box sx={{ display: 'flex', flexDirection: 'column', gap: 3 }}>
        {/* Email Verification Status */}
        <Card>
          <Typography variant="h6" sx={{ fontWeight: 600, mb: 3 }}>
            Account Verification
          </Typography>

          <List disablePadding>
            <ListItem>
              <ListItemIcon>
                <EmailIcon />
              </ListItemIcon>
              <ListItemText
                primary="Email Address"
                secondary={securityStatus?.email || 'Not available'}
              />
            </ListItem>
            <Divider />
            <ListItem>
              <ListItemIcon>
                <VerifiedUserIcon color={securityStatus?.emailVerified ? 'success' : 'warning'} />
              </ListItemIcon>
              <ListItemText
                primary="Email Verification"
                secondary={
                  securityStatus?.emailVerified
                    ? 'Your email address has been verified'
                    : 'Your email address is not verified'
                }
              />
              <Chip
                label={securityStatus?.emailVerified ? 'Verified' : 'Not Verified'}
                color={securityStatus?.emailVerified ? 'success' : 'warning'}
                size="small"
              />
            </ListItem>
          </List>
        </Card>

        {/* Password Management */}
        <Card>
          <Typography variant="h6" sx={{ fontWeight: 600, mb: 3 }}>
            Password
          </Typography>

          <List disablePadding>
            <ListItem>
              <ListItemIcon>
                <LockIcon />
              </ListItemIcon>
              <ListItemText
                primary="Change Password"
                secondary="Receive an email with a link to reset your password"
              />
              <MuiButton
                variant="contained"
                size="small"
                onClick={handlePasswordReset}
                disabled={passwordResetMutation.isPending}
                sx={{
                  backgroundColor: 'primary.main',
                  color: 'primary.contrastText',
                  '&:hover': {
                    backgroundColor: 'primary.dark'
                  }
                }}
              >
                {passwordResetMutation.isPending ? (
                  <CircularProgress size={20} color="inherit" />
                ) : (
                  'Reset Password'
                )}
              </MuiButton>
            </ListItem>
          </List>

          {passwordResetMutation.isSuccess && (
            <Alert severity="success" sx={{ mt: 2 }}>
              Password reset email sent! Please check your inbox.
            </Alert>
          )}
        </Card>

        {/* Passkeys Information */}
        <Card>
          <Typography variant="h6" sx={{ fontWeight: 600, mb: 3 }}>
            Passkeys
          </Typography>

          <List disablePadding>
            <ListItem>
              <ListItemIcon>
                <FingerprintIcon color={securityStatus?.passkeysEnabled ? 'primary' : 'disabled'} />
              </ListItemIcon>
              <ListItemText
                primary="Passkey Authentication"
                secondary={
                  securityStatus?.passkeysEnabled
                    ? 'Passkeys are available for your account'
                    : 'Passkeys are not enabled'
                }
              />
              <Chip
                label={securityStatus?.passkeysEnabled ? 'Available' : 'Not Available'}
                color={securityStatus?.passkeysEnabled ? 'primary' : 'default'}
                size="small"
                variant="outlined"
              />
            </ListItem>
          </List>

          <Alert severity="info" sx={{ mt: 2 }}>
            <Typography variant="body2">
              <strong>About Passkeys:</strong> Passkeys are a secure, passwordless way to sign in using your device's biometric authentication (fingerprint, face recognition) or PIN.
            </Typography>
            <Typography variant="body2" sx={{ mt: 1 }}>
              You can register a passkey during the sign-in process. When you see the option to "Create a passkey," follow the prompts to set up passwordless authentication.
            </Typography>
          </Alert>
        </Card>
      </Box>
    </Box>
  );
};