import {useEffect, useState} from 'react';
import {useTranslation} from 'react-i18next';
import {toast} from 'sonner';

import {Button} from '@/components/ui/button';
import {Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle} from '@/components/ui/dialog';
import NewsEntry from './NewsEntry.jsx';
import {fetchNews, markNewsSeen} from '../utils/news.js';

/**
 * The news entries the user has not seen, newest first. Only "Got it" marks them seen: closing the dialog any other
 * way shows them again on the next dashboard visit.
 */
export default function WhatsNewDialog() {
    const {t} = useTranslation();
    const [unseen, setUnseen] = useState([]);
    const [open, setOpen] = useState(false);

    useEffect(() => {
        // A failed load shows nothing, not an error.
        fetchNews()
            .then((response) => (response.ok ? response.json() : null))
            .then((data) => {
                const entries = (data?.results ?? []).filter((entry) => !entry.seen);
                setUnseen(entries);
                setOpen(entries.length > 0);
            })
            .catch(() => undefined);
    }, []);

    const gotIt = async () => {
        setOpen(false);
        try {
            const response = await markNewsSeen();
            if (!response.ok) toast.error(t('NEWS.SAVE_FAILED'));
        } catch {
            toast.error(t('INFO.ERROR.NETWORK_FAILURE'));
        }
    };

    return (
        <Dialog open={open} onOpenChange={setOpen}>
            <DialogContent className="max-h-[90vh] overflow-y-auto" aria-describedby={undefined}>
                <DialogHeader>
                    <DialogTitle>{t('NEWS.TITLE')}</DialogTitle>
                </DialogHeader>
                <div className="space-y-4">
                    {unseen.map((entry) => <NewsEntry key={entry.id} entry={entry}/>)}
                </div>
                <DialogFooter>
                    <Button onClick={gotIt}>{t('NEWS.GOT_IT')}</Button>
                </DialogFooter>
            </DialogContent>
        </Dialog>
    );
}