import { FC } from "react";
import { useRouter } from "next/router";
import { useTheme } from "next-themes";
// hooks
import { useApplication, useUser } from "hooks/store";
import useLocalStorage from "hooks/use-local-storage";
// components
import { EmptyState, getEmptyStateImagePath } from "components/empty-state";
import { PagesListItem } from "./list-item";
// ui
import { Loader } from "@plane/ui";
// constants
import { EUserProjectRoles } from "constants/project";
import { PAGE_EMPTY_STATE_DETAILS } from "constants/page";

type IPagesListView = {
  pageIds: string[];
};

export const PagesListView: FC<IPagesListView> = (props) => {
  const { pageIds: projectPageIds } = props;
  // theme
  const { resolvedTheme } = useTheme();
  // store hooks
  const {
    commandPalette: { toggleCreatePageModal },
  } = useApplication();
  const {
    membership: { currentProjectRole },
    currentUser,
  } = useUser();
  // local storage
  const { storedValue: pageTab } = useLocalStorage("pageTab", "Recent");
  // router
  const router = useRouter();
  const { workspaceSlug, projectId } = router.query;

  const currentPageTabDetails = pageTab
    ? PAGE_EMPTY_STATE_DETAILS[pageTab as keyof typeof PAGE_EMPTY_STATE_DETAILS]
    : PAGE_EMPTY_STATE_DETAILS["All"];

  const isLightMode = resolvedTheme ? resolvedTheme === "light" : currentUser?.theme.theme === "light";
  const emptyStateImage = getEmptyStateImagePath("pages", currentPageTabDetails.key, isLightMode);

  const isButtonVisible = currentPageTabDetails.key !== "archived" && currentPageTabDetails.key !== "favorites";

  // here we are only observing the projectPageStore, so that we can re-render the component when the projectPageStore changes

  const isEditingAllowed = !!currentProjectRole && currentProjectRole >= EUserProjectRoles.MEMBER;

  return (
    <>
      {projectPageIds && workspaceSlug && projectId ? (
        <div className="h-full space-y-4 overflow-y-auto">
          {projectPageIds.length > 0 ? (
            <ul role="list" className="divide-y divide-custom-border-200">
              {projectPageIds.map((pageId: string) => (
                <PagesListItem key={pageId} pageId={pageId} projectId={projectId.toString()} />
              ))}
            </ul>
          ) : (
            <EmptyState
              title={currentPageTabDetails.title}
              description={currentPageTabDetails.description}
              image={emptyStateImage}
              primaryButton={
                isButtonVisible
                  ? {
                      text: "Create new page",
                      onClick: () => toggleCreatePageModal(true),
                    }
                  : undefined
              }
              disabled={!isEditingAllowed}
            />
          )}
        </div>
      ) : (
        <Loader className="space-y-4">
          <Loader.Item height="40px" />
          <Loader.Item height="40px" />
          <Loader.Item height="40px" />
        </Loader>
      )}
    </>
  );
};