import Link from 'next/link'
import { useRouter } from 'next/router'
import { useEffect, useState, useRef, useLayoutEffect } from 'react'
import { useGlobal } from '@/lib/global'
import { saveDarkModeToCookies, THEMES } from '@/themes/theme'
import useWindowSize from '@/hooks/useWindowSize'
import { siteConfig } from '@/lib/config'

/**
 * 自定义右键菜单
 * @param {*} props
 * @returns
 */
export default function CustomContextMenu(props) {
  const [position, setPosition] = useState({ x: '0px', y: '0px' })
  const [show, setShow] = useState(false)
  const { isDarkMode, updateDarkMode, locale } = useGlobal()
  const menuRef = useRef(null)
  const windowSize = useWindowSize()
  const [width, setWidth] = useState(0)
  const [height, setHeight] = useState(0)

  const { latestPosts } = props
  const router = useRouter()
  /**
   * 随机跳转文章
   */
  function handleJumpToRandomPost() {
    const randomIndex = Math.floor(Math.random() * latestPosts.length)
    const randomPost = latestPosts[randomIndex]
    router.push(`${siteConfig('SUB_PATH', '')}/${randomPost?.slug}`)
  }

  useLayoutEffect(() => {
    setWidth(menuRef.current.offsetWidth)
    setHeight(menuRef.current.offsetHeight)
  }, [])

  useEffect(() => {
    const handleContextMenu = (event) => {
      event.preventDefault()
      // 计算点击位置加菜单宽高是否超出屏幕，如果超出则贴边弹出
      const x = (event.clientX < windowSize.width - width) ? event.clientX : windowSize.width - width
      const y = (event.clientY < windowSize.height - height) ? event.clientY : windowSize.height - height
      setPosition({ y: `${y}px`, x: `${x}px` })
      setShow(true)
    }

    const handleClick = (event) => {
      if (menuRef.current && !menuRef.current.contains(event.target)) {
        setShow(false)
      }
    }

    window.addEventListener('contextmenu', handleContextMenu)
    window.addEventListener('click', handleClick)

    return () => {
      window.removeEventListener('contextmenu', handleContextMenu)
      window.removeEventListener('click', handleClick)
    }
  }, [windowSize])

  function handleBack() {
    window.history.back()
  }

  function handleForward() {
    window.history.forward()
  }

  function handleRefresh() {
    window.location.reload()
  }

  function handleScrollTop() {
    window.scrollTo({ top: 0, behavior: 'smooth' })
    setShow(false)
  }

  function handleCopyLink() {
    const url = window.location.href
    navigator.clipboard.writeText(url)
      .then(() => {
        console.log('页面地址已复制')
      })
      .catch((error) => {
        console.error('复制页面地址失败:', error)
      })
    setShow(false)
  }

  /**
  * 切换主题
  */
  function handleChangeTheme() {
    const randomTheme = THEMES[Math.floor(Math.random() * THEMES.length)] // 从THEMES数组中 随机取一个主题
    const query = router.query
    query.theme = randomTheme
    router.push({ pathname: router.pathname, query })
  }

  /**
   * 复制内容
   */
  function handleCopy() {
    const selectedText = document.getSelection().toString();
    if (selectedText) {
      const tempInput = document.createElement('input');
      tempInput.value = selectedText;
      document.body.appendChild(tempInput);
      tempInput.select();
      document.execCommand('copy');
      document.body.removeChild(tempInput);
      // alert("Text copied: " + selectedText);
    } else {
      // alert("Please select some text first.");
    }

    setShow(false)
  }

  function handleChangeDarkMode() {
    const newStatus = !isDarkMode
    saveDarkModeToCookies(newStatus)
    updateDarkMode(newStatus)
    const htmlElement = document.getElementsByTagName('html')[0]
    htmlElement.classList?.remove(newStatus ? 'light' : 'dark')
    htmlElement.classList?.add(newStatus ? 'dark' : 'light')
  }

  return (
        <div
            ref={menuRef}
            style={{ top: position.y, left: position.x }}
            className={`${show ? '' : 'invisible opacity-0'} select-none transition-opacity duration-200 fixed z-50`}
        >

            {/* 菜单内容 */}
            <div className='rounded-xl w-52 dark:hover:border-yellow-600 bg-white dark:bg-[#040404] dark:text-gray-200 dark:border-gray-600 p-3 border drop-shadow-lg flex-col duration-300 transition-colors'>
                {/* 顶部导航按钮 */}
                <div className='flex justify-between'>
                    <i onClick={handleBack} className="hover:bg-blue-600 hover:text-white px-2 py-2 text-center w-8 rounded cursor-pointer fa-solid fa-arrow-left"></i>
                    <i onClick={handleForward} className="hover:bg-blue-600 hover:text-white px-2 py-2 text-center w-8 rounded cursor-pointer fa-solid fa-arrow-right"></i>
                    <i onClick={handleRefresh} className="hover:bg-blue-600 hover:text-white px-2 py-2 text-center w-8 rounded cursor-pointer fa-solid fa-rotate-right"></i>
                    <i onClick={handleScrollTop} className="hover:bg-blue-600 hover:text-white px-2 py-2 text-center w-8 rounded cursor-pointer fa-solid fa-arrow-up"></i>
                </div>

                <hr className='my-2 border-dashed' />

                {/* 跳转导航按钮 */}
                <div className='w-full px-2'>

                    <div onClick={handleJumpToRandomPost} title={locale.MENU.WALK_AROUND} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                        <i className="fa-solid fa-podcast mr-2" />
                        <div className='whitespace-nowrap'>{locale.MENU.WALK_AROUND}</div>
                    </div>

                    <Link href='/category' title={locale.MENU.CATEGORY} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                        <i className="fa-solid fa-square-minus mr-2" />
                        <div className='whitespace-nowrap'>{locale.MENU.CATEGORY}</div>
                    </Link>

                    <Link href='/tag' title={locale.MENU.TAGS} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                        <i className="fa-solid fa-tag mr-2" />
                        <div className='whitespace-nowrap'>{locale.MENU.TAGS}</div>
                    </Link>

                </div>

                <hr className='my-2 border-dashed' />

                {/* 功能按钮 */}
                <div className='w-full px-2'>

                    {siteConfig('CAN_COPY') && (
                         <div onClick={handleCopy} title={locale.MENU.COPY} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                         <i className="fa-solid fa-copy mr-2" />
                         <div className='whitespace-nowrap'>{locale.MENU.COPY}</div>
                     </div>
                    )}

                    <div onClick={handleCopyLink} title={locale.MENU.SHARE_URL} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                        <i className="fa-solid fa-arrow-up-right-from-square mr-2" />
                        <div className='whitespace-nowrap'>{locale.MENU.SHARE_URL}</div>
                    </div>

                    <div onClick={handleChangeDarkMode} title={isDarkMode ? locale.MENU.LIGHT_MODE : locale.MENU.DARK_MODE} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                        {isDarkMode ? <i className="fa-regular fa-sun mr-2" /> : <i className="fa-regular fa-moon mr-2" />}
                        <div className='whitespace-nowrap'> {isDarkMode ? locale.MENU.LIGHT_MODE : locale.MENU.DARK_MODE}</div>
                    </div>
                    {siteConfig('CUSTOM_RIGHT_CLICK_CONTEXT_MENU_THEME_SWITCH') && (
                    <div onClick={handleChangeTheme} title={locale.MENU.THEME_SWITCH} className='w-full px-2 h-10 flex justify-start items-center flex-nowrap cursor-pointer hover:bg-blue-600 hover:text-white rounded-lg duration-200 transition-all'>
                        <i className="fa-solid fa-palette mr-2" />
                        <div className='whitespace-nowrap'>{locale.MENU.THEME_SWITCH}</div>
                    </div>
                    )}

                </div>

            </div>
        </div >
  )
}