const fs = require("fs"),
    path= require("path"),
    util = require("util"),
    fetch = require("node-fetch"),
    urlp = require("url")



module.exports = {
    async buffer_from_u_r_l(url){
        if(!(url instanceof URL))
            url = new URL(url)
        if(url.protocol == "file:"){
            //eslint-disable-next-line snakecasejs/snakecasejs
            return await util.promisify(fs.read_file)(urlp.fileURLToPath(url))
        }else{
            return await fetch({
                url: url.toString()
            })
        }
    },
    add_url_base_if_required(url, base){
        try{
            return new URL(url)
        }catch{
            //Assume this is a file name
            return new URL(url, base + "/")
        }
    },
    url_basename(url){
        return path.basename(url.pathname)
    },
    
}