import React, { useState } from "react";

import Link from "next/link";
import { useRouter } from "next/router";

import useSWR from "swr";

// lib
import { requiredAuth } from "lib/auth";

// services
import viewsService from "services/views.service";
import projectService from "services/project.service";

// layouts
import AppLayout from "layouts/app-layout";
// ui
import { BreadcrumbItem, Breadcrumbs } from "components/breadcrumbs";
// icons
import { TrashIcon } from "@heroicons/react/24/outline";
// image
import emptyView from "public/empty-state/empty-view.svg";
// fetching keys
import { PROJECT_DETAILS, VIEWS_LIST } from "constants/fetch-keys";
// components
import { CustomMenu, PrimaryButton, Loader, EmptyState } from "components/ui";
import { DeleteViewModal, CreateUpdateViewModal } from "components/views";
// types
import { IView } from "types";
import type { NextPage, GetServerSidePropsContext } from "next";
import { StackedLayersIcon } from "components/icons";

const ProjectViews: NextPage = () => {
  const [isCreateViewModalOpen, setIsCreateViewModalOpen] = useState(false);
  const [selectedView, setSelectedView] = useState<IView | null>(null);

  const {
    query: { workspaceSlug, projectId },
  } = useRouter();

  const { data: activeProject } = useSWR(
    workspaceSlug && projectId ? PROJECT_DETAILS(projectId as string) : null,
    workspaceSlug && projectId
      ? () => projectService.getProject(workspaceSlug as string, projectId as string)
      : null
  );

  const { data: views } = useSWR(
    workspaceSlug && projectId ? VIEWS_LIST(projectId as string) : null,
    workspaceSlug && projectId
      ? () => viewsService.getViews(workspaceSlug as string, projectId as string)
      : null
  );

  return (
    <AppLayout
      meta={{
        title: "Plane - Views",
      }}
      breadcrumbs={
        <Breadcrumbs>
          <BreadcrumbItem title="Projects" link={`/${workspaceSlug}/projects`} />
          <BreadcrumbItem title={`${activeProject?.name ?? "Project"} Views`} />
        </Breadcrumbs>
      }
      right={
        <div className="flex items-center gap-2">
          <PrimaryButton type="button" onClick={() => setIsCreateViewModalOpen(true)}>
            Create View
          </PrimaryButton>
        </div>
      }
    >
      <CreateUpdateViewModal
        isOpen={isCreateViewModalOpen}
        handleClose={() => setIsCreateViewModalOpen(false)}
      />
      <DeleteViewModal
        isOpen={!!selectedView}
        data={selectedView}
        onClose={() => setSelectedView(null)}
        onSuccess={() => setSelectedView(null)}
      />
      {views ? (
        views.length > 0 ? (
          <div className="space-y-5">
            <h3 className="text-3xl font-semibold text-black">Views</h3>
            <div className="rounded-[10px] border">
              {views.map((view) => (
                <div
                  className="flex items-center justify-between border-b bg-white p-4 first:rounded-t-[10px] last:rounded-b-[10px]"
                  key={view.id}
                >
                  <div className="flex items-center gap-2">
                    <StackedLayersIcon height={18} width={18} />
                    <Link href={`/${workspaceSlug}/projects/${projectId}/views/${view.id}`}>
                      <a>{view.name}</a>
                    </Link>
                  </div>
                  <CustomMenu width="auto" verticalEllipsis>
                    <CustomMenu.MenuItem
                      onClick={() => {
                        setSelectedView(view);
                      }}
                    >
                      <span className="flex items-center justify-start gap-2 text-gray-800">
                        <TrashIcon className="h-4 w-4" />
                        <span>Delete</span>
                      </span>
                    </CustomMenu.MenuItem>
                  </CustomMenu>
                </div>
              ))}
            </div>
          </div>
        ) : (
          <EmptyState
            type="view"
            title="Create New View"
            description="Views aid in saving your issues by applying various filters and grouping options."
            imgURL={emptyView}
            action={() => setIsCreateViewModalOpen(true)}
          />
        )
      ) : (
        <Loader className="space-y-3">
          <Loader.Item height="30px" />
          <Loader.Item height="30px" />
          <Loader.Item height="30px" />
        </Loader>
      )}
    </AppLayout>
  );
};

export const getServerSideProps = async (ctx: GetServerSidePropsContext) => {
  const user = await requiredAuth(ctx.req?.headers.cookie);

  const redirectAfterSignIn = ctx.resolvedUrl;

  if (!user) {
    return {
      redirect: {
        destination: `/signin?next=${redirectAfterSignIn}`,
        permanent: false,
      },
    };
  }

  return {
    props: {
      user,
    },
  };
};

export default ProjectViews;
