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

import { useRouter } from "next/router";

import useSWR, { mutate } from "swr";

// react-hook-form
import { Controller, useForm } from "react-hook-form";
// services
import { WorkspaceService } from "services/workspace.service";
import { FileService } from "services/file.service";
// hooks
import useToast from "hooks/use-toast";
import useUserAuth from "hooks/use-user-auth";
// layouts
import { WorkspaceSettingLayout } from "layouts/setting-layout/workspace-setting-layout";
// components
import { ImageUploadModal } from "components/core";
import { DeleteWorkspaceModal } from "components/workspace";
import { WorkspaceSettingHeader } from "components/headers";
// ui
import { Disclosure, Transition } from "@headlessui/react";
import { CustomSelect } from "components/ui";
import { Button, Input, Spinner } from "@plane/ui";
// icons
import { ChevronDown, ChevronUp, Pencil } from "lucide-react";
// types
import type { IWorkspace } from "types";
import type { NextPage } from "next";
// fetch-keys
import { WORKSPACE_DETAILS, USER_WORKSPACES, WORKSPACE_MEMBERS_ME } from "constants/fetch-keys";
// constants
import { ORGANIZATION_SIZE } from "constants/workspace";

const defaultValues: Partial<IWorkspace> = {
  name: "",
  url: "",
  organization_size: "2-10",
  logo: null,
};

// services
const workspaceService = new WorkspaceService();
const fileService = new FileService();

const WorkspaceSettings: NextPage = () => {
  const [isOpen, setIsOpen] = useState(false);
  const [isImageUploading, setIsImageUploading] = useState(false);
  const [isImageRemoving, setIsImageRemoving] = useState(false);
  const [isImageUploadModalOpen, setIsImageUploadModalOpen] = useState(false);

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

  const { user } = useUserAuth();

  const { data: memberDetails } = useSWR(
    workspaceSlug ? WORKSPACE_MEMBERS_ME(workspaceSlug.toString()) : null,
    workspaceSlug ? () => workspaceService.workspaceMemberMe(workspaceSlug.toString()) : null
  );

  const { setToastAlert } = useToast();

  const { data: activeWorkspace } = useSWR(workspaceSlug ? WORKSPACE_DETAILS(workspaceSlug as string) : null, () =>
    workspaceSlug ? workspaceService.getWorkspace(workspaceSlug as string) : null
  );

  const {
    handleSubmit,
    control,
    reset,
    watch,
    setValue,
    formState: { errors, isSubmitting },
  } = useForm<IWorkspace>({
    defaultValues: { ...defaultValues, ...activeWorkspace },
  });

  useEffect(() => {
    if (activeWorkspace) reset({ ...activeWorkspace });
  }, [activeWorkspace, reset]);

  const onSubmit = async (formData: IWorkspace) => {
    if (!activeWorkspace) return;

    const payload: Partial<IWorkspace> = {
      logo: formData.logo,
      name: formData.name,
      organization_size: formData.organization_size,
    };

    await workspaceService
      .updateWorkspace(activeWorkspace.slug, payload, user)
      .then((res) => {
        mutate<IWorkspace[]>(USER_WORKSPACES, (prevData) =>
          prevData?.map((workspace) => (workspace.id === res.id ? res : workspace))
        );
        mutate<IWorkspace>(WORKSPACE_DETAILS(workspaceSlug as string), (prevData) => {
          if (!prevData) return prevData;

          return {
            ...prevData,
            logo: formData.logo,
          };
        });
        setToastAlert({
          title: "Success",
          type: "success",
          message: "Workspace updated successfully",
        });
      })
      .catch((err) => console.error(err));
  };

  const handleDelete = (url: string | null | undefined) => {
    if (!activeWorkspace || !url) return;

    setIsImageRemoving(true);

    fileService.deleteFile(activeWorkspace.id, url).then(() => {
      workspaceService
        .updateWorkspace(activeWorkspace.slug, { logo: "" }, user)
        .then((res) => {
          setToastAlert({
            type: "success",
            title: "Success!",
            message: "Workspace picture removed successfully.",
          });
          mutate<IWorkspace[]>(USER_WORKSPACES, (prevData) =>
            prevData?.map((workspace) => (workspace.id === res.id ? res : workspace))
          );
          mutate<IWorkspace>(WORKSPACE_DETAILS(workspaceSlug as string), (prevData) => {
            if (!prevData) return prevData;

            return {
              ...prevData,
              logo: "",
            };
          });
          setIsImageUploadModalOpen(false);
        })
        .catch(() => {
          setToastAlert({
            type: "error",
            title: "Error!",
            message: "There was some error in deleting your profile picture. Please try again.",
          });
        })
        .finally(() => setIsImageRemoving(false));
    });
  };

  const isAdmin = memberDetails?.role === 20;

  return (
    <WorkspaceSettingLayout header={<WorkspaceSettingHeader title="General Settings" />}>
      <ImageUploadModal
        isOpen={isImageUploadModalOpen}
        onClose={() => setIsImageUploadModalOpen(false)}
        isRemoving={isImageRemoving}
        handleDelete={() => handleDelete(activeWorkspace?.logo)}
        onSuccess={(imageUrl) => {
          setIsImageUploading(true);
          setValue("logo", imageUrl);
          setIsImageUploadModalOpen(false);
          handleSubmit(onSubmit)().then(() => setIsImageUploading(false));
        }}
        value={watch("logo")}
      />
      <DeleteWorkspaceModal
        isOpen={isOpen}
        onClose={() => {
          setIsOpen(false);
        }}
        data={activeWorkspace ?? null}
        user={user}
      />
      {activeWorkspace ? (
        <div className={`pr-9 py-8 w-full overflow-y-auto ${isAdmin ? "" : "opacity-60"}`}>
          <div className="flex gap-5 items-center pb-7 border-b border-custom-border-200">
            <div className="flex flex-col gap-1">
              <button type="button" onClick={() => setIsImageUploadModalOpen(true)} disabled={!isAdmin}>
                {watch("logo") && watch("logo") !== null && watch("logo") !== "" ? (
                  <div className="relative mx-auto flex h-14 w-14">
                    <img
                      src={watch("logo")!}
                      className="absolute top-0 left-0 h-full w-full object-cover rounded-md"
                      alt="Workspace Logo"
                    />
                  </div>
                ) : (
                  <div className="relative flex h-14 w-14 items-center justify-center rounded bg-gray-700 p-4 uppercase text-white">
                    {activeWorkspace?.name?.charAt(0) ?? "N"}
                  </div>
                )}
              </button>
            </div>
            <div className="flex flex-col gap-1">
              <h3 className="text-lg font-semibold leading-6">{watch("name")}</h3>
              <span className="text-sm tracking-tight">{`${
                typeof window !== "undefined" && window.location.origin.replace("http://", "").replace("https://", "")
              }/${activeWorkspace.slug}`}</span>
              <div className="flex item-center gap-2.5">
                <button
                  className="flex items-center gap-1.5 text-xs text-left text-custom-primary-100 font-medium"
                  onClick={() => setIsImageUploadModalOpen(true)}
                  disabled={!isAdmin}
                >
                  {watch("logo") && watch("logo") !== null && watch("logo") !== "" ? (
                    <>
                      <Pencil className="h-3 w-3" />
                      Edit logo
                    </>
                  ) : (
                    "Upload logo"
                  )}
                </button>
              </div>
            </div>
          </div>

          <div className="flex flex-col gap-8 my-10">
            <div className="grid grid-col grid-cols-1 xl:grid-cols-2 2xl:grid-cols-3 items-center justify-between gap-10 w-full">
              <div className="flex flex-col gap-1 ">
                <h4 className="text-sm">Workspace Name</h4>
                <Controller
                  control={control}
                  name="name"
                  rules={{
                    required: "Name is required",
                    maxLength: {
                      value: 80,
                      message: "Workspace name should not exceed 80 characters",
                    },
                  }}
                  render={({ field: { value, onChange, ref } }) => (
                    <Input
                      id="name"
                      name="name"
                      type="text"
                      value={value}
                      onChange={onChange}
                      ref={ref}
                      hasError={Boolean(errors.name)}
                      placeholder="Name"
                      className="rounded-md font-medium w-full"
                      disabled={!isAdmin}
                    />
                  )}
                />
              </div>

              <div className="flex flex-col gap-1 ">
                <h4 className="text-sm">Company Size</h4>
                <Controller
                  name="organization_size"
                  control={control}
                  render={({ field: { value, onChange } }) => (
                    <CustomSelect
                      value={value}
                      onChange={onChange}
                      label={ORGANIZATION_SIZE.find((c) => c === value) ?? "Select organization size"}
                      width="w-full"
                      input
                      disabled={!isAdmin}
                    >
                      {ORGANIZATION_SIZE?.map((item) => (
                        <CustomSelect.Option key={item} value={item}>
                          {item}
                        </CustomSelect.Option>
                      ))}
                    </CustomSelect>
                  )}
                />
              </div>

              <div className="flex flex-col gap-1 ">
                <h4 className="text-sm">Workspace URL</h4>
                <Controller
                  control={control}
                  name="url"
                  render={({ field: { onChange, ref } }) => (
                    <Input
                      id="url"
                      name="url"
                      type="url"
                      value={`${
                        typeof window !== "undefined" &&
                        window.location.origin.replace("http://", "").replace("https://", "")
                      }/${activeWorkspace.slug}`}
                      onChange={onChange}
                      ref={ref}
                      hasError={Boolean(errors.url)}
                      className="w-full"
                      disabled
                    />
                  )}
                />
              </div>
            </div>

            <div className="flex items-center justify-between py-2">
              <Button variant="primary" onClick={handleSubmit(onSubmit)} loading={isSubmitting} disabled={!isAdmin}>
                {isSubmitting ? "Updating..." : "Update Workspace"}
              </Button>
            </div>
          </div>
          {isAdmin && (
            <Disclosure as="div" className="border-t border-custom-border-400">
              {({ open }) => (
                <div className="w-full">
                  <Disclosure.Button
                    as="button"
                    type="button"
                    className="flex items-center justify-between w-full py-4"
                  >
                    <span className="text-xl tracking-tight">Delete Workspace</span>
                    {/* <Icon iconName={open ? "expand_less" : "expand_more"} className="!text-2xl" /> */}
                    {open ? <ChevronUp className="h-5 w-5" /> : <ChevronDown className="h-5 w-5" />}
                  </Disclosure.Button>

                  <Transition
                    show={open}
                    enter="transition duration-100 ease-out"
                    enterFrom="transform opacity-0"
                    enterTo="transform opacity-100"
                    leave="transition duration-75 ease-out"
                    leaveFrom="transform opacity-100"
                    leaveTo="transform opacity-0"
                  >
                    <Disclosure.Panel>
                      <div className="flex flex-col gap-8">
                        <span className="text-sm tracking-tight">
                          The danger zone of the workspace delete page is a critical area that requires careful
                          consideration and attention. When deleting a workspace, all of the data and resources within
                          that workspace will be permanently removed and cannot be recovered.
                        </span>
                        <div>
                          <Button variant="danger" onClick={() => setIsOpen(true)}>
                            Delete my workspace
                          </Button>
                        </div>
                      </div>
                    </Disclosure.Panel>
                  </Transition>
                </div>
              )}
            </Disclosure>
          )}
        </div>
      ) : (
        <div className="flex items-center justify-center h-full w-full px-4 sm:px-0">
          <Spinner />
        </div>
      )}
    </WorkspaceSettingLayout>
  );
};

export default WorkspaceSettings;