import { makeElement, effect, isBrowser, omit, overridable, styleToString, toWritableStores, } from '../../internal/helpers/index.js';
import { writable } from 'svelte/store';
const defaults = {
    src: '',
    delayMs: 0,
    onLoadingStatusChange: undefined,
};
export const createAvatar = (props) => {
    const withDefaults = { ...defaults, ...props };
    const options = toWritableStores(omit(withDefaults, 'loadingStatus', 'onLoadingStatusChange'));
    const { src, delayMs } = options;
    const loadingStatusWritable = withDefaults.loadingStatus ?? writable('loading');
    const loadingStatus = overridable(loadingStatusWritable, withDefaults?.onLoadingStatusChange);
    effect([src, delayMs], ([$src, $delayMs]) => {
        if (isBrowser) {
            const image = new Image();
            image.src = $src;
            image.onload = () => {
                if (delayMs !== undefined) {
                    const timerId = window.setTimeout(() => {
                        loadingStatus.set('loaded');
                    }, $delayMs);
                    return () => window.clearTimeout(timerId);
                }
                else {
                    loadingStatus.set('loaded');
                }
            };
            image.onerror = () => {
                loadingStatus.set('error');
            };
        }
    });
    const image = makeElement('avatar-image', {
        stores: [src, loadingStatus],
        returned: ([$src, $loadingStatus]) => {
            const imageStyles = styleToString({
                display: $loadingStatus === 'loaded' ? 'block' : 'none',
            });
            return {
                src: $src,
                style: imageStyles,
            };
        },
    });
    const fallback = makeElement('avatar-fallback', {
        stores: [loadingStatus],
        returned: ([$loadingStatus]) => {
            return {
                style: $loadingStatus === 'loaded'
                    ? styleToString({
                        display: 'none',
                    })
                    : undefined,
                hidden: $loadingStatus === 'loaded' ? true : undefined,
            };
        },
    });
    return {
        elements: {
            image,
            fallback,
        },
        states: {
            loadingStatus,
        },
        options,
    };
};