import { Button } from "@/components/ui/button";
import Heading from "@/components/ui/heading";
import { Label } from "@/components/ui/label";
import { Toaster } from "@/components/ui/sonner";
import { Switch } from "@/components/ui/switch";
import { FrigateConfig } from "@/types/frigateConfig";
import axios from "axios";
import { useEffect, useState } from "react";
import useSWR from "swr";

const NOTIFICATION_SERVICE_WORKER = "notifications-worker.ts";

export default function NotificationView() {
  const { data: config } = useSWR<FrigateConfig>("config");

  // notification key handling

  const { data: publicKey } = useSWR(
    config?.notifications?.enabled ? "notifications/pubkey" : null,
  );

  // notification state

  const [notificationsSubscribed, setNotificationsSubscribed] =
    useState<boolean>();

  useEffect(() => {
    navigator.serviceWorker
      .getRegistration(NOTIFICATION_SERVICE_WORKER)
      .then((worker) => {
        setNotificationsSubscribed(worker != null);
      });
  }, []);

  return (
    <>
      <div className="flex size-full flex-col md:flex-row">
        <Toaster position="top-center" closeButton={true} />
        <div className="scrollbar-container order-last mb-10 mt-2 flex h-full w-full flex-col overflow-y-auto rounded-lg border-[1px] border-secondary-foreground bg-background_alt p-2 md:order-none md:mb-0 md:mr-2 md:mt-0">
          <Heading as="h3" className="my-2">
            Notification Settings
          </Heading>

          <div className="mt-2 space-y-6">
            <div className="space-y-3">
              <div className="flex flex-row items-center justify-start gap-2">
                <Switch
                  id="auto-live"
                  checked={config?.notifications?.enabled}
                  onCheckedChange={() => {}}
                />
                <Label className="cursor-pointer" htmlFor="auto-live">
                  Notifications
                </Label>
              </div>
              <div className="my-2 text-sm text-muted-foreground">
                <p>
                  Enable notifications for Frigate alerts. This requires Frigate
                  to be externally accessible.
                </p>
              </div>
            </div>
          </div>

          {config?.notifications.enabled && (
            <div className="mt-2 space-y-6">
              <div className="space-y-3">
                {
                  // TODO need to register the worker before enabling the notifications button
                  // TODO make the notifications button show enable / disable depending on current state
                }
                <Button
                  disabled={
                    notificationsSubscribed == undefined ||
                    publicKey == undefined
                  }
                  onClick={() => {
                    Notification.requestPermission().then((permission) => {
                      console.log("notification permissions are ", permission);
                      if (permission === "granted") {
                        navigator.serviceWorker
                          .register(NOTIFICATION_SERVICE_WORKER)
                          .then((registration) => {
                            registration.pushManager
                              .subscribe({
                                userVisibleOnly: true,
                                applicationServerKey: publicKey,
                              })
                              .then((pushSubscription) => {
                                console.log(pushSubscription.endpoint);
                                axios.post("notifications/register", {
                                  sub: pushSubscription,
                                });
                              });
                          });
                      }
                    });
                  }}
                >
                  {`${notificationsSubscribed ? "Disable" : "Enable"} Notifications`}
                </Button>
              </div>
            </div>
          )}
        </div>
      </div>
    </>
  );
}