import {useTranslation} from 'react-i18next';
import {SlidersHorizontal} from 'lucide-react';
import {toast} from 'sonner';

import {Card, CardContent, CardHeader, CardTitle} from '@/components/ui/card';
import {Label} from '@/components/ui/label';
import {Select, SelectContent, SelectItem, SelectTrigger, SelectValue} from '@/components/ui/select';
import {Switch} from '@/components/ui/switch';
import {useCurrentUserContext} from '../context/CurrentUserContext.jsx';
import {usePreferences} from '../context/PreferencesContext.jsx';
import usePersistSettings from '../hooks/usePersistSettings.js';
import useSaveResponse from '../hooks/useSaveResponse.js';
import {FAVORITE_PLATFORMS, saveFavoritePlatform} from '../utils/platforms.js';
import {LANGUAGES, saveSettings} from '../utils/settings.js';

// Radix Select has no empty value.
const NO_FAVORITE = 'NONE';

export default function PreferencesCard() {
    const {t, i18n} = useTranslation();
    const {user: profile, updateUser: updateProfile} = useCurrentUserContext();
    const {isDarkMode, setDarkMode, setLanguage} = usePreferences();
    const persistSettings = usePersistSettings();
    const runSave = useSaveResponse();

    const handleDarkThemeToggle = async () => {
        const next = !isDarkMode;
        setDarkMode(next); // apply on the fly
        await persistSettings(() => saveSettings({useDarkTheme: next}));
    };

    const handleLanguageChange = async (next) => {
        await persistSettings(() => setLanguage(next));
    };

    const handleFavoritePlatformChange = async (value) => {
        const platform = value === NO_FAVORITE ? null : value;
        if (await runSave(() => saveFavoritePlatform(platform))) {
            updateProfile((p) => ({...p, settings: {...p.settings, favoritePlatform: platform}}));
            toast.success(t('SETTINGS.SAVED'));
        }
    };

    return (
        <Card>
            <CardHeader>
                <CardTitle className="flex items-center gap-2"><SlidersHorizontal className="size-4 text-primary"/>{t('SETTINGS.PREFERENCES')}</CardTitle>
            </CardHeader>
            <CardContent className="space-y-6">
                <div className="flex items-center justify-between gap-4">
                    <Label htmlFor="useDarkTheme">{t('SETTINGS.DARK_THEME')}</Label>
                    <Switch id="useDarkTheme" checked={isDarkMode} onCheckedChange={handleDarkThemeToggle}/>
                </div>
                <div className="flex items-center justify-between gap-4">
                    <Label htmlFor="language">{t('SETTINGS.LANGUAGE')}</Label>
                    <Select value={i18n.language} onValueChange={handleLanguageChange}>
                        <SelectTrigger id="language" className="w-40">
                            <SelectValue/>
                        </SelectTrigger>
                        <SelectContent>
                            {LANGUAGES.map((lang) => (
                                <SelectItem key={lang} value={lang}>
                                    {t(`SETTINGS.LANGUAGE_OPTIONS.${lang.toUpperCase()}`)}
                                </SelectItem>
                            ))}
                        </SelectContent>
                    </Select>
                </div>
                <div className="flex items-center justify-between gap-4">
                    <div className="space-y-1">
                        <Label htmlFor="favoritePlatform">{t('SETTINGS.FAVORITE_PLATFORM')}</Label>
                        <p className="text-xs text-muted-foreground">{t('SETTINGS.FAVORITE_PLATFORM_HINT')}</p>
                    </div>
                    <Select value={profile?.settings?.favoritePlatform ?? NO_FAVORITE} onValueChange={handleFavoritePlatformChange}>
                        <SelectTrigger id="favoritePlatform" className="w-48">
                            <SelectValue/>
                        </SelectTrigger>
                        <SelectContent>
                            <SelectItem value={NO_FAVORITE}>{t('SETTINGS.FAVORITE_PLATFORM_NONE')}</SelectItem>
                            {FAVORITE_PLATFORMS.map((platform) => (
                                <SelectItem key={platform.value} value={platform.value}>{platform.label}</SelectItem>
                            ))}
                        </SelectContent>
                    </Select>
                </div>
            </CardContent>
        </Card>
    );
}