import React, {useEffect, useCallback} from 'react';
import PropTypes from 'prop-types';
import {useParams} from 'react-router-dom';
import {connect} from 'react-redux';

import {curators, managers} from './lib/redux-modules';
import {curatorFetcher, managerFetcher} from './lib/fetchers';
import Debug from './debug.jsx';

const StudioCurators = () => {
    const {studioId} = useParams();
    return (
        <div>
            <h3>Managers</h3>
            <ManagerList studioId={studioId} />
            <hr />
            <h3>Curators</h3>
            <CuratorList studioId={studioId} />
        </div>
    );
};

const MemberList = ({studioId, items, error, loading, moreToLoad, onLoadMore}) => {
    useEffect(() => {
        if (studioId && items.length === 0) onLoadMore(studioId, 0);
    }, [studioId]);
    
    const handleLoadMore = useCallback(() => onLoadMore(studioId, items.length), [studioId, items.length]);

    return (<React.Fragment>
        {error && <Debug
            label="Error"
            data={error}
        />}
        {items.map((item, index) =>
            (<Debug
                label="Member"
                data={item}
                key={index}
            />)
        )}
        {loading ? <small>Loading...</small> : (
            moreToLoad ?
                <button onClick={handleLoadMore}>
                    Load more
                </button> :
                <small>No more to load</small>
        )}
    </React.Fragment>);
};

MemberList.propTypes = {
    studioId: PropTypes.string,
    items: PropTypes.array, // eslint-disable-line react/forbid-prop-types
    loading: PropTypes.bool,
    error: PropTypes.object, // eslint-disable-line react/forbid-prop-types
    moreToLoad: PropTypes.bool,
    onLoadMore: PropTypes.func
};

const ManagerList = connect(
    state => managers.selector(state),
    dispatch => ({
        onLoadMore: (studioId, offset) => dispatch(
            managers.actions.loadMore(managerFetcher.bind(null, studioId, offset)))
    })
)(MemberList);

const CuratorList = connect(
    state => curators.selector(state),
    dispatch => ({
        onLoadMore: (studioId, offset) => dispatch(
            curators.actions.loadMore(curatorFetcher.bind(null, studioId, offset)))
    })
)(MemberList);

export default StudioCurators;