// ==UserScript==
// @name         MooMoo.io Key Rebinder
// @description  F -> Hold Trap/Boost Pad  /  V -> Hold Spike
// @author       WEIRD
// @match        *://*.moomoo.io/*
// @icon         https://moomoo.io/img/favicon.png?v=1
// @require      https://cdnjs.cloudflare.com/ajax/libs/msgpack-lite/0.1.26/msgpack.min.js
// @run-at       document-start
// @grant        unsafeWindow
// @license      MIT
// @version      0.1
// @namespace    https://greasyfork.org/users/999838
// @downloadURL none
// ==/UserScript==

(async () => {
    unsafeWindow.keyRebinder = true

    let items = [], inGame = false, keys = {},
        ws = await new Promise(async resolve => {
            let { send } = WebSocket.prototype

            WebSocket.prototype.send = function (...x) {
                send.apply(this, x)
                this.send = send;
                this.iosend = function (...datas) {
                    const [packet, ...data] = datas;
                    this.send(new Uint8Array(Array.from(msgpack.encode([packet, data]))));
                }
                this.addEventListener("message", e => {
                    const [packet, data] = msgpack.decode(new Uint8Array(e.data))
                    switch (packet) {
                        case "1":
                            inGame = true
                            items = [0, 3, 6, 10]
                            break
                        case "11":
                            inGame = false
                            break
                        case "17":
                            if (data[0] && !data[1]) {
                                items = data[0]
                            }
                            break
                    }
                })
                resolve(this)
            }
        })

    var observer = new MutationObserver(mutations => {
        mutations.forEach(mutationRecord => {
            if (document.getElementById("allianceMenu").style.display == "block" || document.getElementById("chatHolder").style.display == "block") {
                keys = {}
            }
        });
    })
    observer.observe(document.getElementById("allianceMenu"), { attributes: true, attributeFilter: ['style'] });
    observer.observe(document.getElementById("chatHolder"), { attributes: true, attributeFilter: ['style'] });

    document.body.addEventListener("keydown", event => {
        if (inGame && !keys[event.code] && document.getElementById("allianceMenu").style.display != "block" && document.getElementById("chatHolder").style.display != "block") {
            keys[event.code] = true
            if (event.code == "KeyF") {
                ws.iosend("5", items[4])
            } else if (event.code == "KeyV") {
                ws.iosend("5", items[2])
            }
        }
    })

    document.body.addEventListener("keyup", event => {
        if (inGame && keys[event.code] && document.getElementById("allianceMenu").style.display != "block" && document.getElementById("chatHolder").style.display != "block") {
            keys[event.code] = false
        }
    })
})()