let ws: WebSocket;

function init(url: string | URL, protocols?: string | string[]) {
    return new Promise(resolve => {
        try {
            ws = new WebSocket(url);
            resolve(true)
        } catch (e) {
            console.log(e)
        }
    })
}

function close(code?: number, reason?: string) {
    ws.close(code, reason)
}

function send(data: string | ArrayBufferLike | Blob | ArrayBufferView) {
    ws.send(data)
}

function closeListener(cb: any) {
    ws.onclose = cb
}

function openListener(cb: any) {
    ws.onopen = cb
}

function errorListener(cb: any) {
    ws.onerror = cb
}

function messageListener(cb: any) {
    ws.onmessage = cb
}

export const wsApi= {
    init,
    close,
    send,
    closeListener,
    openListener,
    errorListener,
    messageListener
}