import {computePosition, shift, flip} from '@floating-ui/dom';

up.on('up:layer:opened', function (event) {
    if (event.layer.mode !== 'popup') {
        return;
    }

    const $anchor = event.layer.origin;
    const $element = event.layer.element;

    const position = $anchor.getAttribute('up-position') ?? 'bottom';

    const alignMap = {
        'left': 'start',
        'center': 'center',
        'right': 'end',
    };

    const align = alignMap[$anchor.getAttribute('up-align')] ?? 'center';

    computePosition($anchor, $element, {
        placement:`${position}-${align}`,
        middleware: [shift({ padding: 10 }), flip()],
    }).then(({x, y}) => {
        Object.assign($element.style, {
            left: `${x}px`,
            top: `${y}px`,
        });
    });
});