"use client";

import { apps as appStoreApps } from "@midday/app-store";
import type { UnifiedApp } from "@midday/app-store/types";
import { Button } from "@midday/ui/button";
import { useQueryClient, useSuspenseQuery } from "@tanstack/react-query";
import { useRouter, useSearchParams } from "next/navigation";
import { useEffect } from "react";
import { AppConnectionToast } from "@/components/app-connection-toast";
import { ConnectWhatsApp } from "@/components/inbox/connect-whatsapp";
import { useUserQuery } from "@/hooks/use-user";
import { useTRPC } from "@/trpc/client";
import { isOAuthMessage } from "@/utils/oauth-message";
import { UnifiedAppComponent } from "./unified-app";

export function Apps() {
  const trpc = useTRPC();
  const queryClient = useQueryClient();
  const { data: user } = useUserQuery();
  const router = useRouter();

  // Global listener for OAuth completion messages
  useEffect(() => {
    const handleMessage = (e: MessageEvent) => {
      if (isOAuthMessage(e.data) && e.data.type === "app_oauth_completed") {
        queryClient.invalidateQueries({
          queryKey: trpc.apps.get.queryKey(),
        });
        queryClient.invalidateQueries({
          queryKey: trpc.inboxAccounts.get.queryKey(),
        });
        queryClient.invalidateQueries({
          queryKey: trpc.invoicePayments.stripeStatus.queryKey(),
        });
      }
    };

    window.addEventListener("message", handleMessage);
    return () => window.removeEventListener("message", handleMessage);
  }, [queryClient, trpc]);

  // Fetch from both endpoints
  const { data: installedOfficialApps } = useSuspenseQuery(
    trpc.apps.get.queryOptions(),
  );

  const { data: externalAppsData } = useSuspenseQuery(
    trpc.oauthApplications.list.queryOptions(),
  );

  const { data: authorizedExternalApps } = useSuspenseQuery(
    trpc.oauthApplications.authorized.queryOptions(),
  );

  // Fetch inbox accounts for Gmail/Outlook status
  const { data: inboxAccounts } = useSuspenseQuery(
    trpc.inboxAccounts.get.queryOptions(),
  );

  // Fetch Stripe status for Stripe Payments app
  const { data: stripeStatus } = useSuspenseQuery(
    trpc.invoicePayments.stripeStatus.queryOptions(),
  );

  const searchParams = useSearchParams();
  const isInstalledPage = searchParams.get("tab") === "installed";
  const search = searchParams.get("q");

  // Helper to get inbox account for a provider
  const getInboxAccount = (providerId: string) => {
    return inboxAccounts?.find((account) => account.provider === providerId);
  };

  // Transform official apps
  const transformedOfficialApps: UnifiedApp[] = appStoreApps.map((app) => {
    // Gmail and Outlook use inbox_accounts for installation status
    const isInboxApp = app.id === "gmail" || app.id === "outlook";
    const inboxAccount = isInboxApp ? getInboxAccount(app.id) : null;
    // Stripe Payments uses team.stripeAccountId for installation status
    const isStripePaymentsApp = app.id === "stripe-payments";
    const installed = isInboxApp
      ? !!inboxAccount
      : isStripePaymentsApp
        ? (stripeStatus?.connected ?? false)
        : (installedOfficialApps?.some(
            (installed) => installed.app_id === app.id,
          ) ?? false);

    return {
      id: app.id,
      name: app.name,
      category: "category" in app ? app.category : "Integration",
      active: app.active,
      beta:
        "beta" in app && typeof app.beta === "boolean" ? app.beta : undefined,
      logo: app.logo,
      short_description: app.short_description,
      description: app.description || undefined,
      images: app.images || [],
      installed,
      type: "official" as const,
      onInitialize:
        "onInitialize" in app && typeof app.onInitialize === "function"
          ? async ({
              accessToken,
              onComplete,
            }: {
              accessToken: string;
              onComplete?: () => void;
            }) => {
              const result = app.onInitialize({ accessToken, onComplete });
              return result instanceof Promise
                ? result
                : Promise.resolve(result);
            }
          : undefined,
      settings:
        "settings" in app && Array.isArray(app.settings)
          ? app.settings
          : undefined,
      userSettings:
        (installedOfficialApps?.find((inst) => inst.app_id === app.id)
          ?.settings as Record<string, any>) || undefined,
      // Include inbox account ID for Gmail/Outlook disconnect
      inboxAccountId: inboxAccount?.id,
      // Include installUrl for apps with external download pages
      installUrl:
        "installUrl" in app && typeof app.installUrl === "string"
          ? app.installUrl
          : undefined,
    };
  });

  // Transform external apps (only approved ones)
  const approvedExternalApps =
    externalAppsData?.data?.filter((app) => app.status === "approved") || [];
  const transformedExternalApps: UnifiedApp[] = approvedExternalApps.map(
    (app) => ({
      id: app.id,
      name: app.name,
      category: "Integration",
      active: app.active ?? false, // Convert null to boolean
      logo: app.logoUrl || undefined, // Convert null to undefined
      short_description: app.description || undefined, // Convert null to undefined
      description: app.overview || app.description || undefined, // Convert null to undefined
      images: app.screenshots || [],
      installed:
        authorizedExternalApps?.data?.some(
          (authorized) => authorized.id === app.id,
        ) ?? false,
      type: "external" as const,
      clientId: app.clientId || undefined, // Convert null to undefined
      scopes: app.scopes || undefined, // Convert null to undefined
      developerName: app.developerName || undefined, // Convert null to undefined
      website: app.website || undefined, // Convert null to undefined
      installUrl: app.installUrl || undefined, // Convert null to undefined
      screenshots: app.screenshots || undefined, // Convert null to undefined
      overview: app.overview || undefined, // Convert null to undefined
      createdAt: app.createdAt || undefined, // Convert null to undefined
      status: app.status || undefined, // Convert null to undefined
      lastUsedAt:
        authorizedExternalApps?.data?.find(
          (authorized) => authorized.id === app.id,
        )?.lastUsedAt || undefined, // Convert null to undefined
    }),
  );

  // Combine all apps
  const allApps = [...transformedOfficialApps, ...transformedExternalApps];

  // Filter apps
  const filteredApps = allApps
    .filter((app) => !isInstalledPage || app.installed)
    .filter(
      (app) => !search || app.name.toLowerCase().includes(search.toLowerCase()),
    );

  return (
    <>
      <AppConnectionToast />

      <div className="grid gap-6 grid-cols-1 md:grid-cols-2 lg:grid-cols-3 2xl:grid-cols-4 mx-auto mt-8">
        {filteredApps.map((app) => (
          <UnifiedAppComponent
            key={app.id}
            app={app}
            userEmail={user?.email || undefined}
          />
        ))}

        {!search && !filteredApps.length && (
          <div className="col-span-full flex flex-col items-center justify-center h-[calc(100vh-400px)]">
            <h3 className="text-lg font-semibold text-[#1D1D1D] dark:text-[#F2F1EF]">
              No apps installed
            </h3>
            <p className="mt-2 text-sm text-[#878787] text-center max-w-md">
              You haven't installed any apps yet. Go to the 'All Apps' tab to
              browse available apps.
            </p>
          </div>
        )}

        {search && !filteredApps.length && (
          <div className="col-span-full flex flex-col items-center justify-center h-[calc(100vh-400px)]">
            <h3 className="text-lg font-semibold text-[#1D1D1D] dark:text-[#F2F1EF]">
              No apps found
            </h3>
            <p className="mt-2 text-sm text-[#878787] text-center max-w-md">
              No apps found for your search, let us know if you want to see a
              specific app in the app store.
            </p>

            <Button
              onClick={() => router.push("/apps")}
              className="mt-4"
              variant="outline"
            >
              Clear search
            </Button>
          </div>
        )}
      </div>

      <ConnectWhatsApp showTrigger={false} />
    </>
  );
}