/*
 *  Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *  SPDX-License-Identifier: Apache-2.0
 */

import "./DropdownMenu.css";
import { Menu, MenuList, MenuButton, MenuItem, MenuLink } from "@reach/menu-button";
import "@reach/menu-button/styles.css";
import React, { ReactNode } from "react";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import { faCaretDown, IconDefinition } from "@fortawesome/free-solid-svg-icons";

type Variant = "base" | "default" | "outline" | "secondary" | "accent" | "unstyled";

interface DropdownProps {
    children: ReactNode;
    variant?: Variant;
    className?: string;
    ariaLabel?: string;
    buttonText: string;
    disabled?: boolean;
    icon?: IconDefinition;
}

function DropdownMenu(props: DropdownProps) {
    let variantClassName = "";
    switch (props.variant) {
        case "base":
            variantClassName = " usa-button--base";
            break;
        case "outline":
            variantClassName = " usa-button--outline";
            break;
        case "secondary":
            variantClassName = " usa-button--secondary";
            break;
        case "accent":
            variantClassName = " usa-button--accent-cool";
            break;
        case "unstyled":
            variantClassName = " usa-button--unstyled";
            break;
        default:
            variantClassName = " usa-button--base";
            break;
    }

    let additionalClasses = "";
    if (props.className) {
        additionalClasses = ` ${props.className}`;
    }

    return (
        <Menu>
            <MenuButton
                className={`usa-button${variantClassName}${additionalClasses}`}
                aria-label={props.ariaLabel}
                disabled={props.disabled}
            >
                {props.buttonText}
                <FontAwesomeIcon icon={props.icon ?? faCaretDown} className="margin-left-1" />
            </MenuButton>
            <MenuList className="font-sans-xs">{props.children}</MenuList>
        </Menu>
    );
}

DropdownMenu.MenuItem = MenuItem;
DropdownMenu.MenuLink = MenuLink;

export default DropdownMenu;