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

import Link from "next/link";

import AddIcon from "~public/icons/Add.svg";
import CheckIcon from "~public/icons/LargeCheck.svg";
import CrossIcon from "~public/icons/Cross.svg";
import EditIcon from "~public/icons/Edit.svg";
import LinkIcon from "~public/icons/Link.svg";
import MenuIcon from "~public/icons/Menu.svg";
import SaveIcon from "~public/icons/Save.svg";
import SettingsIcon from "~public/icons/Settings.svg";

import "./index.scss";

import { ButtonType } from "~utils/enums";

interface Props {
  active?: boolean;
  disabled?: boolean;
  classes?: string[];
  icon?: string;
  type?: ButtonType;
  children?: React.ReactNode;
  onClick?: (event: React.MouseEvent<HTMLElement>) => void;
}

const Button = (props: Props) => {
  // States
  const [active, setActive] = useState(false);
  const [disabled, setDisabled] = useState(false);
  const [pressed, setPressed] = useState(false);
  const [buttonType, setButtonType] = useState(ButtonType.Base);

  const classes = classNames(
    {
      Button: true,
      Active: active,
      "btn-pressed": pressed,
      "btn-disabled": disabled,
      save: props.icon === "save",
      destructive: props.type == ButtonType.Destructive,
    },
    props.classes
  );

  useEffect(() => {
    if (props.active) setActive(props.active);
    if (props.disabled) setDisabled(props.disabled);
    if (props.type) setButtonType(props.type);
  }, [props.active, props.disabled, props.type]);

  const addIcon = (
    <span className="icon">
      <AddIcon />
    </span>
  );

  const menuIcon = (
    <span className="icon">
      <MenuIcon />
    </span>
  );

  const linkIcon = (
    <span className="icon stroke">
      <LinkIcon />
    </span>
  );

  const checkIcon = (
    <span className="icon check">
      <CheckIcon />
    </span>
  );

  const crossIcon = (
    <span className="icon">
      <CrossIcon />
    </span>
  );

  const editIcon = (
    <span className="icon">
      <EditIcon />
    </span>
  );

  const saveIcon = (
    <span className="icon stroke">
      <SaveIcon />
    </span>
  );

  const settingsIcon = (
    <span className="icon settings">
      <SettingsIcon />
    </span>
  );

  function getIcon() {
    let icon: React.ReactNode;

    switch (props.icon) {
      case "new":
        icon = addIcon;
        break;
      case "menu":
        icon = menuIcon;
        break;
      case "link":
        icon = linkIcon;
        break;
      case "check":
        icon = checkIcon;
        break;
      case "cross":
        icon = crossIcon;
        break;
      case "edit":
        icon = editIcon;
        break;
      case "save":
        icon = saveIcon;
        break;
      case "settings":
        icon = settingsIcon;
        break;
    }

    return icon;
  }

  function handleMouseDown() {
    setPressed(true);
  }

  function handleMouseUp() {
    setPressed(false);
  }
  return (
    <button
      className={classes}
      disabled={disabled}
      onMouseDown={handleMouseDown}
      onMouseUp={handleMouseUp}
      onClick={props.onClick}
    >
      {getIcon()}

      {props.type != ButtonType.IconOnly ? (
        <span className="text">{props.children}</span>
      ) : (
        ""
      )}
    </button>
  );
};

export default Button;