'use client'

import styles from './styles.module.scss'
import MenuIcon from './menu.svg'
import Image from 'next/image'
import classNames from 'classnames'
import { MegaMenuItemProps, Menu as MenuType, MenuItem as MenuItemType, SimpleItemProps } from './menu.types'
import { Logo } from '@/components/Logo/Logo'
import { Fragment, useCallback, useState } from 'react'
import { MegaMenu } from '@/components/MegaMenu/MegaMenu'
import { CollapsibleArrow } from '@/components/CollapsibleArrow/CollapsibleArrow'
import Link from 'next/link'

/**
 * Represents a simple item component.
 *
 * @param {Object} SimpleItemProps - The properties for the SimpleItem component.
 * @param {string} SimpleItemProps.text - The text to display for the item.
 * @param {string} SimpleItemProps.href - The URL to navigate to when the item is clicked.
 * @param {string} SimpleItemProps.type - The type of the item ("default" or "button").
 * @param {function} SimpleItemProps.onItemClick - The function to call when the item is clicked.
 * @returns {JSX.Element} A Link component with the specified text, href, type, and onItemClick function.
 */
const SimpleItem = ({text, href, type, onItemClick}: SimpleItemProps) => {
  const className = classNames({
    [styles.menuLink]: type === "default",
    [styles.button]: type === "button"
  });

  return (
    <span>
      <Link
        className={className}
        href={href}
        onClick={onItemClick}
      >
      {text}
    </Link>
    </span>
  )
}


/**
 * Represents a mega menu item component.
 * @param {Object} MegaMenuItemProps - The props for the MegaMenuItem component.
 * @param {string} MegaMenuItemProps.text - The text to display in the menu item.
 * @param {string} MegaMenuItemProps.quote - The quote to display in the mega menu.
 * @param {string} MegaMenuItemProps.source - The source of the quote.
 * @param {Array<string>} MegaMenuItemProps.groups - The groups associated with the menu item.
 * @param {Function} MegaMenuItemProps.onItemClick - The function to handle item click event.
 * @returns {JSX.Element} A JSX element representing the MegaMenuItem component.
 */
const MegaMenuItem = ({text, quote, source, groups, onItemClick}: MegaMenuItemProps) => {

  const [isActive, setIsActive] = useState<boolean>(false);
  const itemClicked = useCallback(() => {
    setIsActive(false);
    if (onItemClick) {
      onItemClick();
    }
  }, [setIsActive, onItemClick]);

  return (
    <span
      onMouseEnter={() => setIsActive(true)}
      onMouseLeave={() => setIsActive(false)}
    >
      <Link
        href={""}
        className={styles.menuLink}
      >
        {text} <CollapsibleArrow direction={isActive ? "UP" : "DOWN"} stroke={1.5} />
      </Link>

      <div
        className={classNames({
          [styles.megaMenu]: true,
          [styles.megaMenuActive]: isActive
        })}
      >
        <MegaMenu
          bibleText={quote}
          bibleBook={source}
          groups={groups}
          onItemClick={itemClicked}
        />
      </div>
    </span>
  )
}

type MenuItemsProps = {
  items: MenuItemType[]
  onItemClick: () => void
}

/**
 * Renders a list of menu items based on the provided props.
 *
 * @param {Object} items - An array of menu items to render.
 * @param {Function} onItemClick - Callback function to handle item click events.
 */
const MenuItems = ({items, onItemClick}: MenuItemsProps) => {
  return (
    <>
      {items.map(item => (
        <Fragment key={item.id}>
          { item.blockType === "simple-item" &&
            <SimpleItem
              text={item.text}
              href={item.href}
              type={item.type}
              blockType={item.blockType}
              onItemClick={onItemClick}
            />
          }

          {
            item.blockType === "mega-menu" &&
            <MegaMenuItem
              text={item.text}
              quote={item.quote}
              source={item.source}
              blockType={item.blockType}
              groups={item.groups}
              onItemClick={onItemClick}
            />
          }
        </Fragment>
      )
      )}
    </>
  )
}

type MenuProps = {
  menu: MenuType
}

/**
 * Represents a menu component that displays navigation items on the screen.
 * @param {Object} MenuProps - The props object containing menu items for left and right side of the menu.
 * @returns The rendered menu component.
 */
export const Menu = ({menu}: MenuProps) => {

  const [displayMenuMobile, setDisplayMenuMobile] = useState(false)


  return (
    <>
      <nav className={classNames(styles.nav, {[styles.full]: displayMenuMobile})}>
        <div className={styles.navMobile}>
          <Link
            href={"/"} onClick={() => setDisplayMenuMobile(false)}
            className={styles.logoLink}
          >
            <Logo withText={false} height={30} color={"#426156"}/>
          </Link>
          <Image
            src={MenuIcon}
            width={25}
            height={25}
            alt={'Menu'}
            onClick={() => setDisplayMenuMobile(!displayMenuMobile)}
          />
        </div>

        <div className={classNames(styles.itemsLeft, {[styles.hide]: !displayMenuMobile})}>
          <MenuItems
            items={menu.leftItems}
            onItemClick={() => setDisplayMenuMobile(false)}
          />
        </div>

        <div className={classNames(styles.itemsRight, {[styles.hide]: !displayMenuMobile})}>
          <MenuItems
            items={menu.rightItems}
            onItemClick={() => setDisplayMenuMobile(false)}
          />
        </div>

      </nav>

    </>

  )
}