/**
 * Copyright (c) OpenLens Authors. All rights reserved.
 * Licensed under MIT License. See LICENSE in root directory for more information.
 */

import "./icon.scss";

import React, { createRef } from "react";
import { NavLink } from "react-router-dom";
import type { LocationDescriptor } from "history";
import { cssNames } from "@k8slens/utilities";
import { withTooltip } from "@k8slens/tooltip";
import isNumber from "lodash/isNumber";
import Configuration from "../assets/configuration.svg";
import Crane from "../assets/crane.svg";
import Group from "../assets/group.svg";
import Helm from "../assets/helm.svg";
import Install from "../assets/install.svg";
import Kube from "../assets/kube.svg";
import LensLogo from "../assets/lens-logo.svg";
import License from "../assets/license.svg";
import LogoLens from "../assets/logo-lens.svg";
import Logout from "../assets/logout.svg";
import Nodes from "../assets/nodes.svg";
import PushOff from "../assets/push_off.svg";
import PushPin from "../assets/push_pin.svg";
import Spinner from "../assets/spinner.svg";
import Ssh from "../assets/ssh.svg";
import Storage from "../assets/storage.svg";
import Terminal from "../assets/terminal.svg";
import Notice from "../assets/notice.svg";
import User from "../assets/user.svg";
import Users from "../assets/users.svg";
import Wheel from "../assets/wheel.svg";
import Workloads from "../assets/workloads.svg";
import type { Logger } from "@k8slens/logger";
import { withInjectables } from "@ogre-tools/injectable-react";
import { loggerInjectionToken } from "@k8slens/logger";
import type { StrictReactNode } from "@k8slens/utilities";

const hrefValidation = /https?:\/\//;

const hrefIsSafe = (href: string) => Boolean(href.match(hrefValidation));

/**
 * Mapping between the local file names and the svgs
 *
 * Because we only really want a fixed list of bundled icons, this is safer so that consumers of
 * `<Icon>` cannot pass in a `../some/path`.
 */
const localSvgIcons = new Map([
  ["configuration", Configuration],
  ["crane", Crane],
  ["group", Group],
  ["helm", Helm],
  ["install", Install],
  ["kube", Kube],
  ["lens-logo", LensLogo],
  ["license", License],
  ["logo-lens", LogoLens],
  ["logout", Logout],
  ["nodes", Nodes],
  ["push_off", PushOff],
  ["push_pin", PushPin],
  ["spinner", Spinner],
  ["ssh", Ssh],
  ["storage", Storage],
  ["terminal", Terminal],
  ["notice", Notice],
  ["user", User],
  ["users", Users],
  ["wheel", Wheel],
  ["workloads", Workloads],
]);

export type NamedSvg =
  | "configuration"
  | "crane"
  | "group"
  | "helm"
  | "install"
  | "kube"
  | "lens-logo"
  | "license"
  | "logo-lens"
  | "logout"
  | "nodes"
  | "push_off"
  | "push_pin"
  | "spinner"
  | "ssh"
  | "storage"
  | "terminal"
  | "user"
  | "users"
  | "wheel"
  | "workloads";

export interface BaseIconProps {
  /**
   * One of the names from https://material.io/icons/
   */
  material?: string;

  /**
   * Either an SVG XML or one of {@link NamedSvg}
   */
  svg?: NamedSvg | string;

  /**
   * render icon as NavLink from react-router-dom
   */
  link?: LocationDescriptor;

  /**
   * render icon as hyperlink
   */
  href?: string;

  /**
   * The icon size (css units)
   */
  size?: string | number;

  /**
   * A pre-defined icon-size
   */
  small?: boolean;

  /**
   * A pre-defined icon-size
   */
  smallest?: boolean;

  /**
   * A pre-defined icon-size
   */
  big?: boolean;

  /**
   * apply active-state styles
   */
  active?: boolean;

  /**
   * indicates that icon is interactive and highlight it on focus/hover
   */
  interactive?: boolean;

  /**
   * Allow focus to the icon to show `.active` styles. Only applicable if {@link IconProps.interactive} is `true`.
   *
   * @default true
   */
  focusable?: boolean;
  sticker?: boolean;
  disabled?: boolean;
  "data-testid"?: string;
}

export interface IconProps extends React.HTMLAttributes<any>, BaseIconProps {
  children?: StrictReactNode;
}

export function isSvg(content: string): boolean {
  // source code of the asset
  // eslint-disable-next-line xss/no-mixed-html
  return String(content).includes("<svg");
}

interface Dependencies {
  logger: Logger;
}

const RawIcon = (props: IconProps & Dependencies) => {
  const ref = createRef<HTMLAnchorElement>();

  const {
    // skip passing props to icon's html element
    className,
    href,
    link,
    material,
    svg,
    size,
    smallest,
    small,
    big,
    disabled,
    sticker,
    active,
    focusable = true,
    children,
    interactive,
    onClick,
    onKeyDown,
    logger,
    ...elemProps
  } = props;
  const isInteractive = interactive ?? !!(onClick || href || link);

  const boundOnClick = (event: React.MouseEvent) => {
    if (!disabled) {
      onClick?.(event);
    }
  };
  const boundOnKeyDown = (event: React.KeyboardEvent<any>) => {
    switch (event.nativeEvent.code) {
      case "Space":

      // fallthrough
      case "Enter": {
        ref.current?.click();
        event.preventDefault();
        break;
      }
    }

    onKeyDown?.(event);
  };

  let iconContent: StrictReactNode;
  const iconProps: Partial<IconProps> = {
    className: cssNames(
      "Icon",
      className,
      {
        svg,
        material,
        interactive: isInteractive,
        disabled,
        sticker,
        active,
        focusable,
      },
      !size ? { smallest, small, big } : {}
    ),
    onClick: isInteractive ? boundOnClick : undefined,
    onKeyDown: isInteractive ? boundOnKeyDown : undefined,
    tabIndex: isInteractive && focusable && !disabled ? 0 : undefined,
    style: size
      ? ({
          "--size": size + (isNumber(size) ? "px" : ""),
        } as React.CSSProperties)
      : undefined,
    ...elemProps,
  };

  // render as inline svg-icon
  if (typeof svg === "string") {
    const svgIconText = isSvg(svg) ? svg : localSvgIcons.get(svg) ?? "";

    iconContent = (
      <span
        className="icon"
        // eslint-disable-next-line xss/no-mixed-html
        dangerouslySetInnerHTML={{ __html: svgIconText }}
      />
    );
  }

  // render as material-icon
  if (typeof material === "string") {
    iconContent = (
      <span className="icon" data-icon-name={material}>
        {material}
      </span>
    );
  }

  // wrap icon's content passed from decorator
  iconProps.children = (
    <>
      {iconContent}
      {children}
    </>
  );

  // render icon type
  if (link) {
    const { className, children } = iconProps;

    return (
      <NavLink className={className} to={link} ref={ref}>
        {children}
      </NavLink>
    );
  }

  if (href) {
    if (hrefIsSafe(href)) {
      // eslint-disable-next-line jsx-a11y/anchor-has-content
      return <a {...iconProps} href={href} ref={ref} />;
    }

    logger.warn("[ICON]: href prop is unsafe, blocking", { href });
  }

  return <i {...iconProps} ref={ref} />;
};

const InjectedIcon = withInjectables<Dependencies, IconProps>(RawIcon, {
  getProps: (di, props) => ({
    ...props,
    logger: di.inject(loggerInjectionToken),
  }),
});

export const Icon = Object.assign(withTooltip(InjectedIcon), { isSvg });