// ==UserScript==
// @name        Product Hunt 汉化
// @namespace   https://github.com/anghunk/UserScript
// @description 由于官方不支持中文，汉化大部分的翻译
// @match       *://*.producthunt.com/*
// @grant       none
// @license     Apache-2.0 license
// @icon        https://app.netlify.com/favicon-48x48.png
// @version     1.0
// @author      anghunk
// ==/UserScript==

const zh_Hans = [
	['Launches', '发布'],
	['Products', '产品'],
  ['News', '新闻'],
  ['Community', '社区'],
  ['Advertise', '广告'],
  ['Top Products Launching Today', '今日热门产品发布'],
  ['Featured', '精选'],
  ['All', '全部'],
  ['Top launches', '热门推荐'],
  ['Submit', '发布'],
  ["Today's winners", '今日榜单'],
  ["Yesterday's winners", '昨日榜单'],
  ["Last week's winners", '上周榜单'],
  ["Last month's winners", '上月榜单'],
  ['Coming soon', '即将推出'],
  ['Jobsolv', '职业求解'],
  ['TapRefer', '点击参考'],
  ['Latest Stories', '最新故事'],
  ['Discussions', '讨论'],
  ['Launching soon?', '即将推出？'],
  ['Learn everything you need to know about launching on Product Hunt 🚀', '了解有关在 Product Hunt 上发布所需的所有信息 🚀'],
  ['Read the guide', '阅读指南'],
];

class ReplaceText {
	constructor(i18n, mode = 'equal') {
		this.W = typeof unsafeWindow === 'undefined' ? window : unsafeWindow;
		this.done = new Set();
		this.alert = this.W.alert.bind(this.W);
		this.confirm = this.W.confirm.bind(this.W);
		this.prompt = this.W.prompt.bind(this.W);
		const i18nMap = new Map(i18n);
		const i18nArr = i18n.map(value => value[0]);
		if (mode === 'regexp') {
			this.textReplace = (text) => {
				if (i18nMap.has(text))
					text = i18nMap.get(text);
				else {
					const key = i18nArr.find(key => (key instanceof RegExp && text.match(key) !== null));
					if (key !== undefined)
						text = text.replace(key, i18nMap.get(key));
				}
				return text;
			};
		} else if (mode === 'match') {
			this.textReplace = (text) => {
				const key = i18nArr.find(key => (text.match(key) !== null));
				if (key !== undefined)
					text = text.replace(key, i18nMap.get(key));
				return text;
			};
		} else {
			this.textReplace = (text) => {
				if (i18nMap.has(text))
					text = i18nMap.get(text);
				return text;
			};
		}
		this.replaceAlert();
		this.replaceObserver();
	}
	replaceAlert() {
		this.W.alert = (message) => this.alert(this.textReplace(message));
		this.W.confirm = (message) => this.confirm(this.textReplace(message));
		this.W.prompt = (message, _default) => this.prompt(this.textReplace(message), _default);
	}
	replaceNode(node, self = false) {
		const list = this.getReplaceList(node, self);
		for (let index in list) {
			list[index].forEach(node => {
				if (this.done.has(node[index]))
					return;
				const newText = this.textReplace(node[index]);
				if (node[index] !== newText) {
					this.done.add(newText);
					node[index] = newText;
				}
			});
		}
	}
	replaceObserver() {
		const bodyObserver = new MutationObserver(mutations => {
			mutations.forEach(mutation => {
				if (mutation.type === 'attributes' || mutation.type === 'characterData')
					this.replaceNode(mutation.target, true);
				else if (mutation.type === 'childList') {
					mutation.addedNodes.forEach(addedNode => this.replaceNode(addedNode));
				}
			});
		});
		document.addEventListener('readystatechange', () => {
			bodyObserver.observe(document.body, {
				attributes: true,
				characterData: true,
				childList: true,
				subtree: true
			});
			this.replaceNode(document.body);
		}, {
			capture: true,
			once: true
		});
	}
	getReplaceList(node, self = false) {
		const list = {
			data: new Set(),
			placeholder: new Set(),
			title: new Set(),
			value: new Set(),
		};
		const nodeList = self ? [node] : this.nodeForEach(node);
		nodeList.forEach(node => {
			if (node.parentElement instanceof HTMLScriptElement || node.parentElement instanceof HTMLStyleElement)
				return;
			if (node instanceof HTMLElement && node.title !== '')
				list.title.add(node);
			if (node instanceof HTMLInputElement && ['button', 'reset', 'submit'].includes(node.type) && node.value !== '')
				list.value.add(node);
			else if (node instanceof HTMLInputElement || node instanceof HTMLTextAreaElement && node.placeholder !== '')
				list.placeholder.add(node);
			else if (node instanceof Text)
				list.data.add(node);
		});
		return list;
	}
	nodeForEach(node) {
		const list = [];
		list.push(node);
		if (node.hasChildNodes())
			node.childNodes.forEach(child => list.push(...this.nodeForEach(child)));
		return list;
	}
}

new ReplaceText(zh_Hans, 'regexp');