import React, { useLayoutEffect, useState } from 'react';
import { useRouter } from 'next/router';
import Spinner from 'react-bootstrap/Spinner';
import { getKey, SESSION_KEYS } from 'utils/storage/sessionStorage';
import { fileData, getFiles } from 'services/fileService';
import { getData, LS_KEYS } from 'utils/storage/localStorage';
import PreviewCard from './components/PreviewCard';
import { getActualKey } from 'utils/common/key';

export default function Gallery() {
    const router = useRouter();
    const [loading, setLoading] = useState(false);
    const [data, setData] = useState<fileData[]>();

    useLayoutEffect(() => {
        const key = getKey(SESSION_KEYS.ENCRYPTION_KEY);
        const token = getData(LS_KEYS.USER).token;
        if (!key) {
            router.push("/");
        }
        const main = async () => {
            setLoading(true);
            const encryptionKey = await getActualKey();
            const resp = await getFiles("0", token, "100", encryptionKey);
            setLoading(false);
            setData(resp);
        };
        main();
    }, []);

    if (!data || loading) {
        return <Spinner animation="border" variant="primary"/>;
    }

    return (data || []).map(item => <PreviewCard key={item.id} data={item} />);
}