function createElement(name, attrs, ...children) {
    const el = document.createElement(name);

    for (const attr in attrs) {
        if(attr.startsWith("on")) {
            el[attr] = attrs[attr];
        } else {
            el.setAttribute(attr, attrs[attr])
        }
    }

    for (const child of children) {
        if (child == null) {
            continue
        }
        el.appendChild(child)
    }

    return el
}

export function createElementNS(name, attrs, ...children) {
    var  svgns = "http://www.w3.org/2000/svg";
    var  el = document.createElementNS(svgns, name);

    for (const attr in attrs) {
        if(attr.startsWith("on")) {
            el[attr] = attrs[attr];
        } else {
            el.setAttribute(attr, attrs[attr])
        }
    }

    for (const child of children) {
        if (child == null) {
            continue
        }
        el.appendChild(child)
    }

    return el
}

export  function p(attrs, ...children) {
    return createElement("p", attrs, ...children)
}

export function span(attrs, ...children) {
    return createElement("span", attrs, ...children)
}

export function div(attrs, ...children) {
    return createElement("div", attrs, ...children)
}

export function a(attrs, ...children) {
    return createElement("a", attrs, ...children)
}

export function i(attrs, ...children) {
    return createElement("i", attrs, ...children)
}

export function form(attrs, ...children) {
    return createElement("form", attrs, ...children)
}

export function img(alt, attrs, ...children) {
    attrs['onerror'] =  (event) => event.target.remove()
    attrs['alt'] = alt
    return createElement("img", attrs, ...children)
}

export function input(attrs, ...children) {
    return createElement("input", attrs, ...children)
}

export function button(attrs, ...children) {
    return createElement("button", attrs, ...children)
}

export function path(attrs, ...children) {
    return createElementNS("path", attrs, ...children)
}

export function g(attrs, ...children) {
    return createElementNS("g", attrs, ...children)
}

export function svg(attrs, ...children) {
    return createElementNS("svg", attrs, ...children)
}

export function body(attrs, ...children) {
    return createElement("body", attrs, ...children)
}

export function textarea(attrs, ...children) {
    return createElement("textarea", attrs, ...children)
}

export function parse(html) {
    return document.createRange().createContextualFragment(html);
}

export function pfp(id) {
    return img('pfp', {src: `/image/avatar?user_id=${id}`})
}

export function banner(id) {
    return img('banner', {src: `/image/banner?user_id=${id}`})
}

const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];

const letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 
    'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];

export function parseMonth(month) {
    if (month > -1 && month < 26) {
        return months[month]
    } else {
        let first = letters[month%26].toUpperCase()
        let middle = letters[month*13%26]
        let last = letters[month*50%26]
        return first + middle + last
    }
}

export function parseDate(date) {
    return parseMonth(date.getUTCMonth()) + ' ' + date.getUTCDate() + ', ' + date.getUTCFullYear() + ' ' + date.toLocaleTimeString();
}

export function crawl(key, object) {
    let data = []
    for (const k in object) {
        if (typeof object[k] === 'object') {
            data.push(...crawl(key, object[k]))
        } else if (k == key) {
            data.push(object[k])
        }
    }
    return data
}