// ==UserScript==
// @name         Minecraft Helper
// @namespace    http://tampermonkey.net/
// @version      0.3.2
// @description  为 Minecraft 玩家定制的实用脚本
// @author       PRO
// @license      gpl-3.0
// @match        https://www.minecraft.net/*
// @match        https://www.curseforge.com/*
// @match        https://modrinth.com/*
// @icon         https://www.minecraft.net/etc.clientlibs/minecraft/clientlibs/main/resources/img/minecraft-creeper-face.jpg
// @grant        none
// @downloadURL none
// ==/UserScript==

(function () {
    'use strict';
    let config = {
        "general": {
            "timeout": 500              // 部分功能的延迟
        },
        "minecraft": {
            "auto-stay": true           // 自动点击“留在 Minecraft.net”
        },
        "curseforge": {
            "auto-mod": true,           // 首页自动转到 MC 模组界面
            "highlight-files": true,    // 突出显示 "Files" 项目
            "highlight-border": "rgb(241, 100, 54) 0.2em solid",
            "default-download": true    // 默认直接下载
        },
        "modrinth": {
            "auto-mod": true,           // 首页自动转到 MC 模组界面
            "shortcut": true            // 快捷键: <F>iles, <-, ->
        }
    };
    function try_click(selector) {
        let ele = document.querySelector(selector);
        if (ele) ele.click();
    }
    switch (window.location.host) {
        case 'www.minecraft.net': {
            if (config.minecraft["auto-stay"])
                try_click("#popup-btn");
            break;
        }
        case 'www.curseforge.com': {
            if (config.curseforge["auto-mod"] && window.location.pathname == '/') {
                window.location.pathname = "/minecraft/mc-mods";
            }
            if (config.curseforge["highlight-files"] && window.location.pathname != "/") {
                let tabs = document.getElementsByClassName("tabs");
                if (tabs.length) {
                    tabs = tabs[0];
                    for (let tab of tabs.children) {
                        if (tab.textContent == "Files") {
                            tab.style.border = config.curseforge["highlight-border"];
                            break;
                        }
                    }
                }
            }
            if (config.curseforge["default-download"]) {
                function cf_replace(menu) {
                    menu.children[0].remove();
                    let down = menu.querySelector("#contextMenu").children[1];
                    let new_btn = document.createElement("button");
                    new_btn.innerHTML = '<svg><use href="/images/sprite.svg#icon-download"></use></svg><span>Download</span>';
                    new_btn.setAttribute("class", "btn-cta");
                    new_btn.onclick = (e) => { window.location.href = down.children[0].href; };
                    menu.insertBefore(new_btn, menu.children[0]);
                }
                let menu = document.querySelector("#menuButton");
                cf_replace(menu);
                let content = document.getElementsByClassName("tab-content")[0];
                let cfg = { attributes: false, childList: true, subtree: true };
                let callback = (mutations, observer) => {
                    for (let mutation of mutations) {
                        if (mutation.addedNodes.length && mutation.addedNodes[0].nodeName == "SECTION") {
                            let menu = mutation.addedNodes[0].querySelector("#menuButton");
                            if (menu) cf_replace(menu);
                        }
                    }
                };
                let observer = new MutationObserver(callback);
                observer.observe(content, cfg);
            }
            break;
        }
        case "modrinth.com": {
            if (window.location.pathname == "/" && config.modrinth["auto-mod"]) {
                try_click(".button-group > a");
            }
            if (config.modrinth.shortcut) {
                document.addEventListener("keydown", (e) => {
                    if (document.activeElement.nodeName != "INPUT") {
                        switch (e.key) {
                            case "ArrowLeft":
                                try_click(".left-arrow");
                                break;
                            case "ArrowRight":
                                try_click(".right-arrow");
                                break;
                            case "f":
                                try_click(".goto-link");
                                break;
                            case "s":
                                try_click(".navigation > a.nav-link");
                                window.setTimeout(() => {
                                    let search = document.getElementById("search");
                                    if (search) search.focus();
                                }, config.general.timeout);
                                e.preventDefault();
                                break;
                            default:
                                break;
                        }
                    } else if (document.activeElement.value == "") {
                        switch (e.key) {
                            case "Escape":
                                document.activeElement.blur();
                                break;
                            case "ArrowLeft":
                                try_click(".left-arrow");
                                break;
                            case "ArrowRight":
                                try_click(".right-arrow");
                                break;
                            default:
                                break;
                        }
                    }
                })
            }
            break;
        }
    }
})();