import { autoScrollForElements } from "@atlaskit/pragmatic-drag-and-drop-auto-scroll/element";
import { combine } from "@atlaskit/pragmatic-drag-and-drop/combine";
import { observer } from "mobx-react";
import { useEffect, useRef } from "react";
// components
import { NotAuthorizedView } from "@/components/auth-screens/not-authorized-view";
import { PageHead } from "@/components/core/page-title";
import { ProjectSettingsLabelList } from "@/components/labels";
import { SettingsContentWrapper } from "@/components/settings/content-wrapper";
import { EUserPermissions, EUserPermissionsLevel } from "@buzzwaretech/constants";
// hooks
import { useProject } from "@/hooks/store/use-project";
import { useUserPermissions } from "@/hooks/store/user";
// local imports
import { LabelsProjectSettingsHeader } from "./header";

function LabelsSettingsPage() {
  // store hooks
  const { currentProjectDetails } = useProject();
  const { workspaceUserInfo, allowPermissions } = useUserPermissions();

  const pageTitle = currentProjectDetails?.name
    ? `${currentProjectDetails?.name} - Labels`
    : undefined;

  const scrollableContainerRef = useRef<HTMLDivElement | null>(null);

  // derived values
  const canPerformProjectMemberActions = allowPermissions(
    [EUserPermissions.ADMIN, EUserPermissions.MEMBER],
    EUserPermissionsLevel.PROJECT,
  );

  // Enable Auto Scroll for Labels list
  useEffect(() => {
    const element = scrollableContainerRef.current;

    if (!element) return;

    return combine(
      autoScrollForElements({
        element,
      }),
    );
  }, []);

  if (workspaceUserInfo && !canPerformProjectMemberActions) {
    return (
      <NotAuthorizedView section="settings" isProjectView className="h-auto" />
    );
  }

  return (
    <SettingsContentWrapper header={<LabelsProjectSettingsHeader />}>
      <PageHead title={pageTitle} />
      <div ref={scrollableContainerRef} className="size-full">
        <ProjectSettingsLabelList />
      </div>
    </SettingsContentWrapper>
  );
}

export default observer(LabelsSettingsPage);