function __rest(m, u, d, f) {
    const urlparter = require("./urlparter");
    const fs = require("fs");
    const urlex = urlparter(u);
    const http = require(urlex.protocol);
    urlex.protocol += ":";
    console.log(urlex);

    let headers = {};
    let query = {};

    function qs (){
        let str;
        for (let idx in query) {
            if (!str) {
                str = "?" + idx + "=" + escape(query[idx])
            }    else {
                str += "&" + idx + "=" + escape(query[idx])
            }
        }
        return str;
    }

    const api = {
        query: (obj) => {
            query = obj;
            return api;
        },
        headers: (obj) => {
            headers = obj;
            return api;
        },
        request: (cb) => {
            urlex.method = m.toUpperCase();
            urlex.path += qs();
            urlex.headers = headers;

            const req = http.request(urlex, res => {
                const { statusCode } = res;
                const out = {
                    statusCode: statusCode,
                    body: ""
                }

                if (d) {
                    let file = fs.createWriteStream(f);
                    res.pipe(file);
                    return f;

                } else {
                    res.on("data", d => out.body += d);
                    res.on("end", () => {
                        cb(null, out)
                    });
                }
            })

            req.on("error", e => { cb(e) });
            req.end();
        }
    }

    return api;
}

module.exports = {
    get: url => {return __rest("get", url)},
    post: url => {return __rest("post", url)},
    download: (url,fn) => {return __rest("get", url, true, fn)}
}