import React from "react";
import { observer } from "mobx-react";
import Image from "next/image";
import Link from "next/link";

import { useTheme } from "next-themes";
// hooks
// components
import { Button, TButtonVariant } from "@plane/ui";
// constant
import { EMPTY_STATE_DETAILS, EmptyStateType } from "@/constants/empty-state";
// helpers
import { cn } from "@/helpers/common.helper";
import { useUser } from "@/hooks/store";
import { ComicBoxButton } from "./comic-box-button";

export type EmptyStateProps = {
  type: EmptyStateType;
  size?: "sm" | "md" | "lg";
  layout?: "screen-detailed" | "screen-simple";
  additionalPath?: string;
  primaryButtonOnClick?: () => void;
  primaryButtonLink?: string;
  secondaryButtonOnClick?: () => void;
};

export const EmptyState: React.FC<EmptyStateProps> = observer((props) => {
  const {
    type,
    size = "lg",
    layout = "screen-detailed",
    additionalPath = "",
    primaryButtonOnClick,
    primaryButtonLink,
    secondaryButtonOnClick,
  } = props;
  // store
  const {
    membership: { currentWorkspaceRole, currentProjectRole },
  } = useUser();
  // theme
  const { resolvedTheme } = useTheme();

  // if empty state type is not found
  if (!EMPTY_STATE_DETAILS[type]) return null;

  // current empty state details
  const { key, title, description, path, primaryButton, secondaryButton, accessType, access } =
    EMPTY_STATE_DETAILS[type];
  // resolved empty state path
  const resolvedEmptyStatePath = `${additionalPath && additionalPath !== "" ? `${path}${additionalPath}` : path}-${
    resolvedTheme === "light" ? "light" : "dark"
  }.webp`;
  // current access type
  const currentAccessType = accessType === "workspace" ? currentWorkspaceRole : currentProjectRole;
  // permission
  const isEditingAllowed = currentAccessType && access && currentAccessType >= access;
  const anyButton = primaryButton || secondaryButton;

  // primary button
  const renderPrimaryButton = () => {
    if (!primaryButton) return null;

    const commonProps = {
      size: size,
      variant: "primary" as TButtonVariant,
      prependIcon: primaryButton.icon,
      onClick: primaryButtonOnClick ? primaryButtonOnClick : undefined,
      disabled: !isEditingAllowed,
    };

    if (primaryButton.comicBox) {
      return (
        <ComicBoxButton
          label={primaryButton.text}
          icon={primaryButton.icon}
          title={primaryButton.comicBox?.title}
          description={primaryButton.comicBox?.description}
          onClick={primaryButtonOnClick}
          disabled={!isEditingAllowed}
        />
      );
    } else if (primaryButtonLink) {
      return (
        <Link href={primaryButtonLink}>
          <Button {...commonProps}>{primaryButton.text}</Button>
        </Link>
      );
    } else {
      return <Button {...commonProps}>{primaryButton.text}</Button>;
    }
  };
  // secondary button
  const renderSecondaryButton = () => {
    if (!secondaryButton) return null;

    return (
      <Button
        size={size}
        variant="neutral-primary"
        prependIcon={secondaryButton.icon}
        onClick={secondaryButtonOnClick}
        disabled={!isEditingAllowed}
      >
        {secondaryButton.text}
      </Button>
    );
  };

  return (
    <>
      {layout === "screen-detailed" && (
        <div className="flex items-center justify-center min-h-full min-w-full overflow-y-auto py-10 md:px-20 px-5">
          <div
            className={cn("flex flex-col gap-5", {
              "md:min-w-[24rem] max-w-[45rem]": size === "sm",
              "md:min-w-[30rem] max-w-[60rem]": size === "lg",
            })}
          >
            <div className="flex flex-col gap-1.5 flex-shrink">
              {description ? (
                <>
                  <h3 className="text-xl font-semibold">{title}</h3>
                  <p className="text-sm">{description}</p>
                </>
              ) : (
                <h3 className="text-xl font-medium">{title}</h3>
              )}
            </div>

            {path && (
              <Image
                src={resolvedEmptyStatePath}
                alt={key || "button image"}
                width={384}
                height={250}
                layout="responsive"
                lazyBoundary="100%"
              />
            )}

            {anyButton && (
              <>
                <div className="relative flex items-center justify-center gap-2 flex-shrink-0 w-full">
                  {renderPrimaryButton()}
                  {renderSecondaryButton()}
                </div>
              </>
            )}
          </div>
        </div>
      )}
      {layout === "screen-simple" && (
        <div className="text-center flex flex-col gap-2.5 items-center">
          <div className={`${size === "sm" ? "h-24 w-24" : "h-28 w-28"}`}>
            <Image
              src={resolvedEmptyStatePath}
              alt={key || "button image"}
              width={size === "sm" ? 78 : 96}
              height={size === "sm" ? 78 : 96}
              layout="responsive"
              lazyBoundary="100%"
            />
          </div>
          {description ? (
            <>
              <h3 className="text-lg font-medium text-custom-text-300 whitespace-pre-line">{title}</h3>
              <p className="text-base font-medium text-custom-text-400 whitespace-pre-line">{description}</p>
            </>
          ) : (
            <h3 className="text-sm font-medium text-custom-text-400 whitespace-pre-line">{title}</h3>
          )}
        </div>
      )}
    </>
  );
});