import {
  Card, Title, Text, Stack, Group, Button, Badge, Alert,
} from '@mantine/core';
import { IconBrandGoogle, IconBrandAzure, IconLink, IconLinkOff, IconAlertCircle } from '@tabler/icons-react';
import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
import { notifications } from '@mantine/notifications';
import api from '../../services/api';

export function LinkedAccounts() {
  const queryClient = useQueryClient();

  const { data: providers } = useQuery({
    queryKey: ['sso-providers'],
    queryFn: async () => {
      const { data } = await api.get('/auth/sso/providers');
      return data;
    },
  });

  const { data: profile } = useQuery({
    queryKey: ['auth-profile'],
    queryFn: async () => {
      const { data } = await api.get('/auth/profile');
      return data;
    },
  });

  const unlinkMutation = useMutation({
    mutationFn: (provider: string) => api.delete(`/auth/sso/unlink/${provider}`),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['auth-profile'] });
      notifications.show({ message: 'Account unlinked', color: 'orange' });
    },
    onError: (err: any) => notifications.show({ message: err.response?.data?.message || 'Failed to unlink', color: 'red' }),
  });

  const noProviders = !providers?.google && !providers?.azure;

  return (
    <Card withBorder p="lg">
      <Group justify="space-between" mb="md">
        <div>
          <Title order={4}>Linked Accounts</Title>
          <Text size="sm" c="dimmed">Connect third-party accounts for single sign-on</Text>
        </div>
      </Group>

      {noProviders && (
        <Alert color="gray" variant="light" icon={<IconAlertCircle size={16} />}>
          No SSO providers are configured. Contact your administrator to enable Google or Microsoft SSO.
        </Alert>
      )}

      <Stack gap="md">
        {providers?.google && (
          <Group justify="space-between" p="sm" style={{ border: '1px solid var(--mantine-color-gray-3)', borderRadius: 8 }}>
            <Group>
              <IconBrandGoogle size={24} color="#4285F4" />
              <div>
                <Text fw={500}>Google</Text>
                <Text size="xs" c="dimmed">Sign in with your Google account</Text>
              </div>
            </Group>
            <Button
              variant="light"
              size="sm"
              leftSection={<IconLink size={14} />}
              onClick={() => window.location.href = '/api/auth/google'}
            >
              Connect
            </Button>
          </Group>
        )}

        {providers?.azure && (
          <Group justify="space-between" p="sm" style={{ border: '1px solid var(--mantine-color-gray-3)', borderRadius: 8 }}>
            <Group>
              <IconBrandAzure size={24} color="#0078D4" />
              <div>
                <Text fw={500}>Microsoft</Text>
                <Text size="xs" c="dimmed">Sign in with your Microsoft account</Text>
              </div>
            </Group>
            <Button
              variant="light"
              size="sm"
              leftSection={<IconLink size={14} />}
              onClick={() => window.location.href = '/api/auth/azure'}
            >
              Connect
            </Button>
          </Group>
        )}
      </Stack>
    </Card>
  );
}