import { Alert, Button, Group, Paper, Stack, Text } from "@mantine/core";
import { DateInput } from "@mantine/dates";
import { AlertTriangle, Pencil, Send } from "lucide-react";
import { useState } from "react";
import { Link } from "react-router-dom";
import toast from "react-hot-toast";

import { bookingsService } from "@/services/bookings.service";

export interface BookingChangesRequestedAlertProps {
  bookingId: string;
  reference?: string | null;
  /** Operations' note — what has to change before this can go back to them. */
  note?: string | null;
  /** Shipment day the booking currently holds; the resubmit default. */
  scheduledDate?: string | null;
  /** GL Ethiopia owns customs bookings, so only they get the resubmit control. */
  canResubmit: boolean;
  /** Completion-form route for editing the cargo before resubmitting —
   *  rendered only for resubmit-capable users when provided. */
  editHref?: string;
  onResubmitted?: () => void;
}

/**
 * Operations sent a GL-created booking back for changes.
 *
 * The customer cannot act on this — GL created the booking on their behalf — so
 * the note and the way out both live here, on the page GL works from. Resubmit
 * re-requests operation on the chosen shipment day; the server re-checks the day
 * has a departure that can carry the cargo and refuses with the reason if not.
 */
export function BookingChangesRequestedAlert({
  bookingId,
  reference,
  note,
  scheduledDate,
  canResubmit,
  editHref,
  onResubmitted,
}: BookingChangesRequestedAlertProps) {
  const [day, setDay] = useState<Date | null>(
    scheduledDate ? new Date(scheduledDate) : null,
  );
  const [sending, setSending] = useState(false);

  const resubmit = async () => {
    if (!day) return;
    setSending(true);
    try {
      await bookingsService.proceedToOperation(bookingId, day.toISOString());
      toast.success("Sent back to Operations for review");
      onResubmitted?.();
    } catch {
      // The http interceptor already toasts the server's own reason (no
      // departure that day, no wagon that can carry the cargo, export train
      // full…) — a second toast here would just duplicate it.
    } finally {
      setSending(false);
    }
  };

  return (
    <Alert
      color="red"
      radius="md"
      icon={<AlertTriangle size={16} />}
      title={`Operations returned booking ${reference ?? ""} for changes`.trim()}
    >
      <Stack gap="sm" align="flex-start">
        {note ? (
          <Paper
            withBorder
            radius="md"
            p="sm"
            bg="red.0"
            style={{ borderColor: "var(--mantine-color-red-3)", width: "100%" }}
          >
            <Text size="xs" fw={700} c="red.9" tt="uppercase" mb={4}>
              What Operations asked for
            </Text>
            <Text size="sm" style={{ whiteSpace: "pre-wrap" }}>
              {note}
            </Text>
          </Paper>
        ) : (
          <Text size="sm">
            Operations returned this booking without a note — contact them for
            the detail before resubmitting.
          </Text>
        )}

        <Text size="sm">
          This booking was created by GL Ethiopia, so the customer cannot fix it.
          Make the correction Operations asked for, then send it back for review.{" "}
          <Text
            component={Link}
            to={`/dashboard/bookings/${bookingId}/clearance`}
            inherit
            fw={600}
            c="red.8"
          >
            Open the booking →
          </Text>
        </Text>

        {canResubmit ? (
          <Group gap="sm" align="flex-end" wrap="wrap">
            <DateInput
              label="Shipment day"
              description="Keep the day or pick another with an open departure"
              value={day}
              onChange={(v) => setDay(v ? new Date(v) : null)}
              minDate={new Date()}
              size="sm"
              w={230}
            />
            <Button
              color="red"
              radius="md"
              size="sm"
              loading={sending}
              disabled={!day}
              leftSection={<Send size={15} />}
              onClick={() => void resubmit()}
            >
              Resubmit to Operations
            </Button>
            {editHref ? (
              <Button
                component={Link}
                to={editHref}
                variant="default"
                radius="md"
                size="sm"
                leftSection={<Pencil size={15} />}
              >
                Edit cargo & resubmit
              </Button>
            ) : null}
          </Group>
        ) : null}
      </Stack>
    </Alert>
  );
}

export default BookingChangesRequestedAlert;