const React = require('react');
const PropTypes = require('prop-types');
const classnames = require('classnames');
const Icon = require('stremio-icons/dom');
const Button = require('stremio/common/Button');
const Popup = require('stremio/common/Popup');
const ModalDialog = require('stremio/common/ModalDialog');
const useBinaryState = require('stremio/common/useBinaryState');
const styles = require('./styles');

const Multiselect = ({ className, direction, title, disabled, dataset, modalOptions, renderLabelContent, renderLabelText, onOpen, onClose, onSelect, ...props }) => {
    const [menuOpen, , closeMenu, toggleMenu] = useBinaryState(false);
    const options = React.useMemo(() => {
        return Array.isArray(props.options) ?
            props.options.filter((option) => {
                return option && typeof option.value === 'string';
            })
            :
            [];
    }, [props.options]);
    const selected = React.useMemo(() => {
        return Array.isArray(props.selected) ?
            props.selected.filter((value) => {
                return typeof value === 'string';
            })
            :
            [];
    }, [props.selected]);
    const popupLabelOnClick = React.useCallback((event) => {
        if (typeof props.onClick === 'function') {
            props.onClick(event);
        }

        if (!event.nativeEvent.togglePopupPrevented) {
            toggleMenu();
        }
    }, [props.onClick, toggleMenu]);
    const popupMenuOnClick = React.useCallback((event) => {
        event.nativeEvent.togglePopupPrevented = true;
    }, []);
    const popupMenuOnKeyDown = React.useCallback((event) => {
        event.nativeEvent.buttonClickPrevented = true;
    }, []);
    const optionOnClick = React.useCallback((event) => {
        if (typeof onSelect === 'function') {
            onSelect({
                type: 'select',
                value: event.currentTarget.dataset.value,
                reactEvent: event,
                nativeEvent: event.nativeEvent,
                dataset: dataset
            });
        }

        if (!event.nativeEvent.closeMenuPrevented) {
            closeMenu();
        }
    }, [dataset, onSelect]);
    const mountedRef = React.useRef(false);
    React.useLayoutEffect(() => {
        if (mountedRef.current) {
            if (menuOpen) {
                if (typeof onOpen === 'function') {
                    onOpen({
                        type: 'open',
                        dataset: dataset
                    });
                }
            } else {
                if (typeof onClose === 'function') {
                    onClose({
                        type: 'close',
                        dataset: dataset
                    });
                }
            }
        }

        mountedRef.current = true;
    }, [menuOpen]);
    const renderLabel = React.useCallback(({ children, className, ...props }) => (
        <Button {...props} className={classnames(className, styles['label-container'], { 'active': menuOpen })} title={title} disabled={disabled} onClick={popupLabelOnClick}>
            {
                typeof renderLabelContent === 'function' ?
                    renderLabelContent()
                    :
                    <React.Fragment>
                        <div className={styles['label']}>
                            {
                                typeof renderLabelText === 'function' ?
                                    renderLabelText()
                                    :
                                    selected.length > 0 ?
                                        options.reduce((labels, { label, value }) => {
                                            if (selected.includes(value)) {
                                                labels.push(typeof label === 'string' ? label : value);
                                            }

                                            return labels;
                                        }, []).join(', ')
                                        :
                                        title
                            }
                        </div>
                        <Icon className={styles['icon']} icon={'ic_arrow_down'} />
                    </React.Fragment>
            }
            {children}
        </Button>
    ));
    const renderOptions = React.useCallback((options) => {
        return (
            options.length > 0 ?
                options.map(({ label, value }) => (
                    <Button key={value} className={classnames(styles['option-container'], { 'selected': selected.includes(value) })} title={typeof label === 'string' ? label : value} data-value={value} onClick={optionOnClick}>
                        <div className={styles['label']}>{typeof label === 'string' ? label : value}</div>
                        <Icon className={styles['icon']} icon={'ic_check'} />
                    </Button>
                ))
                :
                <div className={styles['no-options-container']}>
                    <div className={styles['label']}>No options available</div>
                </div>
        );
    }, [options]);
    return (
        <React.Fragment>
            {
                !modalOptions ?
                    <Popup
                        open={menuOpen}
                        direction={direction}
                        onCloseRequest={closeMenu}
                        renderLabel={(labelProps) => {
                            return renderLabel({
                                ...labelProps,
                                ...props,
                                className: classnames(className, labelProps.className)
                            });
                        }}
                        renderMenu={() => (
                            <div className={styles['menu-container']} onKeyDown={popupMenuOnKeyDown} onClick={popupMenuOnClick}>
                                {renderOptions(options)}
                            </div>
                        )}
                    />
                    :
                    <React.Fragment>
                        {renderLabel({
                            ...props,
                            className
                        })}
                        {
                            menuOpen ?
                                <ModalDialog title={title} onCloseRequest={() => closeMenu()}>
                                    <div className={classnames(styles['menu-container'], { 'modal': modalOptions })}>
                                        {renderOptions(options)}
                                    </div>
                                </ModalDialog>
                                :
                                null
                        }
                    </React.Fragment>
            }
        </React.Fragment>
    );
};

Multiselect.propTypes = {
    className: PropTypes.string,
    direction: PropTypes.any,
    title: PropTypes.string,
    options: PropTypes.arrayOf(PropTypes.shape({
        value: PropTypes.string.isRequired,
        label: PropTypes.string
    })),
    selected: PropTypes.arrayOf(PropTypes.string),
    disabled: PropTypes.bool,
    dataset: PropTypes.object,
    modalOptions: PropTypes.bool,
    renderLabelContent: PropTypes.func,
    renderLabelText: PropTypes.func,
    onOpen: PropTypes.func,
    onClose: PropTypes.func,
    onSelect: PropTypes.func,
    onClick: PropTypes.func
};

module.exports = Multiselect;