import { useGlobal } from '@/lib/global'
import { useState } from 'react'
import { Draggable } from './Draggable'
import { THEMES } from '@/themes/theme'
import { useRouter } from 'next/router'
import DarkModeButton from './DarkModeButton'
import { getQueryParam } from '@/lib/utils'
import LANGS from '@/lib/lang'
/**
 *
 * @returns 主题切换
 */
const ThemeSwitch = () => {
  const { theme, lang, changeLang, locale, isDarkMode, toggleDarkMode } = useGlobal()
  const router = useRouter()
  const currentTheme = getQueryParam(router.asPath, 'theme') || theme
  //   const currentLang = getQueryParam(router.asPath, 'lang') || lang
  const [isLoading, setIsLoading] = useState(false)

  // 修改当前路径url中的 theme 参数
  // 例如 http://localhost?theme=hexo 跳转到 http://localhost?theme=newTheme
  const onThemeSelectChange = (e) => {
    setIsLoading(true)
    const newTheme = e.target.value
    const query = router.query
    query.theme = newTheme
    router.push({ pathname: router.pathname, query }).then(() => {
      setIsLoading(false)
    })
  }

  const onLangSelectChange = (e) => {
    const newLang = e.target.value
    changeLang(newLang)
  }

  return (<>
        <Draggable>
            <div id="draggableBox" style={{ left: '0px', top: '80vh' }} className="fixed group space-y-2 overflow-hidden z-50 p-3 flex flex-col items-start dark:text-white bg-gray-50 dark:bg-black rounded-xl shadow-lg border dark:border-gray-800">
                {/* 深色按钮 */}
                <div className="text-sm flex items-center group-hover:w-32 transition-all duration-200">
                    <DarkModeButton />
                    <div onClick={toggleDarkMode} className='cursor-pointer w-0 group-hover:w-24 transition-all duration-200 overflow-hidden whitespace-nowrap pl-1'>{isDarkMode ? locale.MENU.DARK_MODE : locale.MENU.LIGHT_MODE}</div>
                </div>

                {/* 翻译按钮 */}
                <div className="text-sm flex items-center group-hover:w-32 transition-all duration-200">
                    <i className="fa-solid fa-language w-5" />
                    <div className='w-0 group-hover:w-24 transition-all duration-200 overflow-hidden'>
                        <select value={lang} onChange={onLangSelectChange} name="themes" className='pl-1 bg-gray-50 dark:bg-black appearance-none outline-none dark:text-white uppercase cursor-pointer'>
                            {Object.keys(LANGS)?.map(t => {
                              return <option key={t} value={t}>{LANGS[t].LOCALE}</option>
                            })}
                        </select>
                    </div>
                </div>

                {/* 主题切换按钮 */}
                <div className="text-sm flex items-center group-hover:w-32 transition-all duration-200">
                    <i className="fa-solid fa-palette w-5" />
                    <div className='w-0 group-hover:w-24 transition-all duration-200 overflow-hidden'>
                        <select value={currentTheme} onChange={onThemeSelectChange} name="themes" className='pl-1 bg-gray-50 dark:bg-black appearance-none outline-none dark:text-white uppercase cursor-pointer'>
                            {THEMES?.map(t => {
                              return <option key={t} value={t}>{t}</option>
                            })}
                        </select>
                    </div>
                </div>
            </div>
        </Draggable>

        {/* 切换主题加载时的全屏遮罩 */}
        <div className={`${isLoading ? 'opacity-50 ' : 'opacity-0'} 
            w-screen h-screen bg-black text-white shadow-text flex justify-center items-center
            transition-all fixed top-0 left-0 pointer-events-none duration-1000 z-50 shadow-inner`}>
            <i className='text-3xl mr-5 fas fa-spinner animate-spin' />
        </div>
    </>
  )
}

export default ThemeSwitch