"use client";

import React from "react";
import { observer } from "mobx-react";
import { useSearchParams } from "next/navigation";
import useSWR from "swr";
import { Boxes, Check, Share2, Star, User2, X } from "lucide-react";
// components
import { LogoSpinner } from "@/components/common/logo-spinner";
import { EmptySpace, EmptySpaceItem } from "@/components/ui/empty-space";
// constants
import { WORKSPACE_INVITATION } from "@/constants/fetch-keys";
// helpers
import { EPageTypes } from "@/helpers/authentication.helper";
// hooks
import { useUser } from "@/hooks/store/user";
import { useAppRouter } from "@/hooks/use-app-router";
// wrappers
import { AuthenticationWrapper } from "@/lib/wrappers/authentication-wrapper";
import { WorkspaceService } from "@/plane-web/services";
// services

// service initialization
const workspaceService = new WorkspaceService();

const WorkspaceInvitationPage = observer(() => {
  // router
  const router = useAppRouter();
  // query params
  const searchParams = useSearchParams();
  const invitation_id = searchParams.get("invitation_id");
  const email = searchParams.get("email");
  const slug = searchParams.get("slug");
  // store hooks
  const { data: currentUser } = useUser();

  const { data: invitationDetail, error } = useSWR(
    invitation_id && slug && WORKSPACE_INVITATION(invitation_id.toString()),
    invitation_id && slug
      ? () => workspaceService.getWorkspaceInvitation(slug.toString(), invitation_id.toString())
      : null
  );

  const handleAccept = () => {
    if (!invitationDetail) return;
    workspaceService
      .joinWorkspace(invitationDetail.workspace.slug, invitationDetail.id, {
        accepted: true,
        email: invitationDetail.email,
      })
      .then(() => {
        if (email === currentUser?.email) {
          router.push(`/${invitationDetail.workspace.slug}`);
        } else {
          router.push(`/?${searchParams.toString()}`);
        }
      })
      .catch((err) => console.error(err));
  };

  const handleReject = () => {
    if (!invitationDetail) return;
    workspaceService
      .joinWorkspace(invitationDetail.workspace.slug, invitationDetail.id, {
        accepted: false,
        email: invitationDetail.email,
      })
      .then(() => {
        router.push("/");
      })
      .catch((err) => console.error(err));
  };

  return (
    <AuthenticationWrapper pageType={EPageTypes.PUBLIC}>
      <div className="flex h-full w-full flex-col items-center justify-center px-3">
        {invitationDetail && !invitationDetail.responded_at ? (
          error ? (
            <div className="flex w-full flex-col space-y-4 rounded border border-custom-border-200 bg-custom-background-100 px-4 py-8 text-center shadow-2xl md:w-1/3">
              <h2 className="text-xl uppercase">INVITATION NOT FOUND</h2>
            </div>
          ) : (
            <EmptySpace
              title={`You have been invited to ${invitationDetail.workspace.name}`}
              description="Your workspace is where you'll create projects, collaborate on your work items, and organize different streams of work in your Plane account."
            >
              <EmptySpaceItem Icon={Check} title="Accept" action={handleAccept} />
              <EmptySpaceItem Icon={X} title="Ignore" action={handleReject} />
            </EmptySpace>
          )
        ) : error || invitationDetail?.responded_at ? (
          invitationDetail?.accepted ? (
            <EmptySpace
              title={`You are already a member of ${invitationDetail.workspace.name}`}
              description="Your workspace is where you'll create projects, collaborate on your work items, and organize different streams of work in your Plane account."
            >
              <EmptySpaceItem Icon={Boxes} title="Continue to home" href="/" />
            </EmptySpace>
          ) : (
            <EmptySpace
              title="This invitation link is not active anymore."
              description="Your workspace is where you'll create projects, collaborate on your work items, and organize different streams of work in your Plane account."
              link={{ text: "Or start from an empty project", href: "/" }}
            >
              {!currentUser ? (
                <EmptySpaceItem Icon={User2} title="Sign in to continue" href="/" />
              ) : (
                <EmptySpaceItem Icon={Boxes} title="Continue to home" href="/" />
              )}
              <EmptySpaceItem Icon={Star} title="Star us on GitHub" href="https://github.com/makeplane" />
              <EmptySpaceItem
                Icon={Share2}
                title="Join our community of active creators"
                href="https://discord.com/invite/A92xrEGCge"
              />
            </EmptySpace>
          )
        ) : (
          <div className="flex h-full w-full items-center justify-center">
            <LogoSpinner />
          </div>
        )}
      </div>
    </AuthenticationWrapper>
  );
});

export default WorkspaceInvitationPage;
