import {format, formatDistanceToNow, parseJSON} from "date-fns";

export function friendlyDate(date) {
    return formatDistanceToNow(parseJSON(date), {addSuffix: true});
}

export function readableDate(date) {
    if (!date) {
        return "";
    }
    return format(parseJSON(date), "dd MMM yyyy");
}

export function readableDatetime(date) {
    if (!date) {
        return "";
    }

    return format(parseJSON(date), "dd MMM yyyy HH:mm");
}


export function stripHtml(html = "") {
    let tmp = document.createElement("div");
    tmp.innerHTML = html;
    return tmp.textContent || tmp.innerText || "";
}


export function randomId(length = 10) {
    return Math.random().toString(36).substring(2, length + 2);
}

export function clickOutside(node) {

    const handleClick = event => {
        if (node && !node.contains(event.target) && !event.defaultPrevented) {
            node.dispatchEvent(
                new CustomEvent('click_outside', node)
            )
        }
    }

    document.addEventListener('click', handleClick, true);

    return {
        destroy() {
            document.removeEventListener('click', handleClick, true);
        }
    }
}

export function uniqueBy(list, callback) {
    const itemMap = list.reduce((c, item) => {
        c[callback(item)] = item;
        return c;
    }, {});

    return Object.values(itemMap);
}

export function range(start, end) {
    var ans = [];
    for (let i = start; i <= end; i++) {
        ans.push(i);
    }
    return ans;
}