rbox/static/js/utils.js

export function debounce(fn, delay = 300) {
    let timeoutId;
    return function (...args) {
        clearTimeout(timeoutId);
        timeoutId = setTimeout(() => fn.apply(this, args), delay);
    };
}

export function throttle(fn, delay = 300) {
    let lastCall = 0;
    let timeoutId;

    return function (...args) {
        const now = Date.now();

        if (now - lastCall >= delay) {
            lastCall = now;
            fn.apply(this, args);
        } else {
            clearTimeout(timeoutId);
            timeoutId = setTimeout(() => {
                lastCall = Date.now();
                fn.apply(this, args);
            }, delay - (now - lastCall));
        }
    };
}

export function once(fn) {
    let called = false;
    return function (...args) {
        if (!called) {
            called = true;
            return fn.apply(this, args);
        }
    };
}

export function compose(...fns) {
    return (value) => fns.reduceRight((acc, fn) => fn(acc), value);
}

export function pipe(...fns) {
    return (value) => fns.reduce((acc, fn) => fn(acc), value);
}

export async function retry(fn, maxAttempts = 3, delay = 1000) {
    for (let attempt = 1; attempt <= maxAttempts; attempt++) {
        try {
            return await fn();
        } catch (error) {
            if (attempt === maxAttempts) throw error;
            await new Promise(resolve => setTimeout(resolve, delay * attempt));
        }
    }
}

export function deepClone(obj) {
    if (obj === null || typeof obj !== 'object') return obj;
    if (obj instanceof Date) return new Date(obj.getTime());
    if (obj instanceof Array) return obj.map(item => deepClone(item));
    if (obj instanceof Object) {
        const cloned = {};
        for (const key in obj) {
            if (obj.hasOwnProperty(key)) {
                cloned[key] = deepClone(obj[key]);
            }
        }
        return cloned;
    }
}