import { Button, Modal, Radio, Stack, Text } from "@mantine/core";
import { useMutation } from "@tanstack/react-query";
import { KeyRound } from "lucide-react";
import { useState } from "react";

import { useAuth } from "@/auth/useAuth";
import { useToast } from "@/hooks/use-toast";
import { FREIGHT_PERMS, hasPermission } from "@/lib/permissions";
import { api } from "@/services/api";
import type { Company, ResetChannel } from "@/types/customer";

export interface ResetPasswordActionProps {
  company: Pick<Company, "id" | "email" | "phone">;
}

/**
 * Staff-triggered password reset. Sends a one-time code to the customer's
 * primary contact; the customer picks their own new password. No credential is
 * ever shown to or handled by staff.
 */
export default function ResetPasswordAction({ company }: ResetPasswordActionProps) {
  const { user } = useAuth();
  const { toast } = useToast();
  const [opened, setOpened] = useState(false);
  const [channel, setChannel] = useState<ResetChannel>("phone");

  const { mutate, isPending } = useMutation(
    api.customers.resetPassword.mutationOptions({
      onSuccess: (result) => {
        setOpened(false);
        toast({
          title: "Reset code sent",
          description: `The customer can now reset their password using the code sent to ${result.maskedTarget}.`,
        });
      },
      onError: (error) => {
        toast({
          title: "Could not send reset code",
          description: error.message,
          variant: "destructive",
        });
      },
    }),
  );

  if (!hasPermission(user, FREIGHT_PERMS.customers.resetPassword)) return null;

  return (
    <>
      <Button
        variant="default"
        leftSection={<KeyRound size={16} />}
        onClick={() => setOpened(true)}
      >
        Reset password
      </Button>

      <Modal
        opened={opened}
        onClose={() => setOpened(false)}
        title="Send a password-reset code"
        centered
      >
        <Stack gap="md">
          <Text size="sm" c="dimmed">
            We&apos;ll send a one-time code to this customer&apos;s primary contact.
            They choose their own new password — you will not see it.
          </Text>

          <Radio.Group
            value={channel}
            onChange={(v) => setChannel(v as ResetChannel)}
            label="Send the code via"
          >
            <Stack gap="xs" mt="xs">
              <Radio
                value="phone"
                label="SMS"
                description={company.phone ?? "No phone on the company record"}
              />
              <Radio
                value="email"
                label="Email"
                description={company.email ?? "No email on the company record"}
              />
            </Stack>
          </Radio.Group>

          <Text size="xs" c="dimmed">
            The code goes to the primary contact&apos;s own email or phone, which
            may differ from the company contact details shown above.
          </Text>

          <Button
            color="edr-green"
            loading={isPending}
            onClick={() => mutate({ companyId: company.id, channel })}
          >
            Send reset code
          </Button>
        </Stack>
      </Modal>
    </>
  );
}