lightrag_webui/src/components/AppSettings.tsx

import { useState, useCallback } from 'react'
import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/Popover'
import Button from '@/components/ui/Button'
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/Select'
import { useSettingsStore } from '@/stores/settings'
import { PaletteIcon } from 'lucide-react'
import { useTranslation } from 'react-i18next'

export default function AppSettings() {
  const [opened, setOpened] = useState<boolean>(false)
  const { t } = useTranslation()

  const language = useSettingsStore.use.language()
  const setLanguage = useSettingsStore.use.setLanguage()

  const theme = useSettingsStore.use.theme()
  const setTheme = useSettingsStore.use.setTheme()

  const handleLanguageChange = useCallback((value: string) => {
    setLanguage(value as 'en' | 'zh')
  }, [setLanguage])

  const handleThemeChange = useCallback((value: string) => {
    setTheme(value as 'light' | 'dark' | 'system')
  }, [setTheme])

  return (
    <Popover open={opened} onOpenChange={setOpened}>
      <PopoverTrigger asChild>
        <Button variant="outline" size="icon" className="h-9 w-9">
          <PaletteIcon className="h-5 w-5" />
        </Button>
      </PopoverTrigger>
      <PopoverContent side="bottom" align="end" className="w-56">
        <div className="flex flex-col gap-4">
          <div className="flex flex-col gap-2">
            <label className="text-sm font-medium">{t('settings.language')}</label>
            <Select value={language} onValueChange={handleLanguageChange}>
              <SelectTrigger>
                <SelectValue />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="en">English</SelectItem>
                <SelectItem value="zh">中文</SelectItem>
              </SelectContent>
            </Select>
          </div>

          <div className="flex flex-col gap-2">
            <label className="text-sm font-medium">{t('settings.theme')}</label>
            <Select value={theme} onValueChange={handleThemeChange}>
              <SelectTrigger>
                <SelectValue />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="light">{t('settings.light')}</SelectItem>
                <SelectItem value="dark">{t('settings.dark')}</SelectItem>
                <SelectItem value="system">{t('settings.system')}</SelectItem>
              </SelectContent>
            </Select>
          </div>
        </div>
      </PopoverContent>
    </Popover>
  )
}