import React, { useState, useRef } from "react";

import { useRouter } from "next/router";

import useSWR, { mutate } from "swr";

// services
import estimatesService from "services/estimates.service";
import projectService from "services/project.service";

// lib
import { requiredAdmin } from "lib/auth";
// layouts
import AppLayout from "layouts/app-layout";
// components
import { CreateUpdateEstimateModal, SingleEstimate } from "components/estimates";

//hooks
import useToast from "hooks/use-toast";
// ui
import { Loader, PrimaryButton } from "components/ui";
import { BreadcrumbItem, Breadcrumbs } from "components/breadcrumbs";
// icons
import { PlusIcon } from "@heroicons/react/24/outline";
// types
import { IEstimate, UserAuth, IProject } from "types";
import type { GetServerSidePropsContext, NextPage } from "next";
// fetch-keys
import { ESTIMATES_LIST, PROJECT_DETAILS } from "constants/fetch-keys";

const EstimatesSettings: NextPage<UserAuth> = (props) => {
  const { isMember, isOwner, isViewer, isGuest } = props;

  const [estimateFormOpen, setEstimateFormOpen] = useState(false);

  const [isUpdating, setIsUpdating] = useState(false);
  const [estimateToUpdate, setEstimateToUpdate] = useState<IEstimate | undefined>();

  const [activeEstimate, setActiveEstimate] = useState<IEstimate | null>(null);

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

  const { setToastAlert } = useToast();

  const scollToRef = useRef<HTMLDivElement>(null);

  const { data: estimatesList } = useSWR<IEstimate[]>(
    workspaceSlug && projectId ? ESTIMATES_LIST(projectId as string) : null,
    workspaceSlug && projectId
      ? () => estimatesService.getEstimatesList(workspaceSlug as string, projectId as string)
      : null
  );

  const editEstimate = (estimate: IEstimate) => {
    setIsUpdating(true);
    setEstimateToUpdate(estimate);
    setEstimateFormOpen(true);
  };

  const removeEstimate = (estimateId: string) => {
    if (!workspaceSlug || !projectId) return;

    mutate<IEstimate[]>(
      ESTIMATES_LIST(projectId as string),
      (prevData) => (prevData ?? []).filter((p) => p.id !== estimateId),
      false
    );

    estimatesService
      .deleteEstimate(workspaceSlug as string, projectId as string, estimateId)
      .catch(() => {
        setToastAlert({
          type: "error",
          title: "Error!",
          message: "Error: Estimate could not be deleted. Please try again",
        });
      });
  };

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

  return (
    <>
      <AppLayout
        memberType={{ isMember, isOwner, isViewer, isGuest }}
        breadcrumbs={
          <Breadcrumbs>
            <BreadcrumbItem
              title={`${projectDetails?.name ?? "Project"}`}
              link={`/${workspaceSlug}/projects/${projectDetails?.id}/issues`}
            />
            <BreadcrumbItem title="Estimates Settings" />
          </Breadcrumbs>
        }
        settingsLayout
      >
        <CreateUpdateEstimateModal
          isCreate={estimateToUpdate ? true : false}
          isOpen={estimateFormOpen}
          data={estimateToUpdate}
          handleClose={() => {
            setEstimateFormOpen(false);
            setEstimateToUpdate(undefined);
          }}
        />
        <section className="grid grid-cols-12 gap-10">
          <div className="col-span-12 sm:col-span-5">
            <h3 className="text-[28px] font-semibold">Estimates</h3>
          </div>
          <div className="col-span-12 space-y-5 sm:col-span-7">
            <div className="flex sm:justify-end sm:items-end sm:h-full text-theme">
              <span
                className="flex items-center cursor-pointer gap-2"
                onClick={() => {
                  setEstimateToUpdate(undefined);
                  setEstimateFormOpen(true);
                }}
              >
                <PlusIcon className="h-4 w-4" />
                Create New Estimate
              </span>
            </div>
          </div>
        </section>
        <hr className="h-[1px] w-full mt-4" />
        {estimatesList && estimatesList.length > 0 && (
          <section className="mt-4 divide-y px-6 py-4 mb-8 rounded-xl border bg-white">
            <>
              {estimatesList ? (
                estimatesList.map((estimate) => (
                  <SingleEstimate
                    key={estimate.id}
                    estimate={estimate}
                    activeEstimate={activeEstimate}
                    setActiveEstimate={setActiveEstimate}
                    editEstimate={(estimate) => editEstimate(estimate)}
                    handleEstimateDelete={(estimateId) => removeEstimate(estimateId)}
                  />
                ))
              ) : (
                <Loader className="space-y-5">
                  <Loader.Item height="40px" />
                  <Loader.Item height="40px" />
                  <Loader.Item height="40px" />
                  <Loader.Item height="40px" />
                </Loader>
              )}
            </>
          </section>
        )}
      </AppLayout>
    </>
  );
};

export const getServerSideProps = async (ctx: GetServerSidePropsContext) => {
  const projectId = ctx.query.projectId as string;
  const workspaceSlug = ctx.query.workspaceSlug as string;

  const memberDetail = await requiredAdmin(workspaceSlug, projectId, ctx.req?.headers.cookie);

  return {
    props: {
      isOwner: memberDetail?.role === 20,
      isMember: memberDetail?.role === 15,
      isViewer: memberDetail?.role === 10,
      isGuest: memberDetail?.role === 5,
    },
  };
};

export default EstimatesSettings;