let ver = "Usamin (18.11.4)";
if (process.argv.indexOf("--automatic") === -1) {
    let input = require("readline-sync").question("version string [empty: " + ver + " (default)]? ");
    if (input) {
        ver = input;
    }
    //var basefile="../../"
} else {
    //var basefile="./"
}
//const { app } = require('electron');
const path = require('path');
const basefile = path.join(__dirname, "../../")
function main(ver, basefile) {
	const fs = require("fs");
	const execSync = require("child_process").execSync;
	let gitHash = execSync("git rev-parse HEAD")
		.toString()
		.trim();
    fs.writeFileSync(basefile + "git", gitHash);
	console.log("Constructing view files " + ver + ": make sure to update package.json");
	const langs = ["ja", "en", "bg", "cs", "de", "es-AR", "ps"];
	const langsh = ["日本語", "English", "български", "Česky", "Deutsch", "Spanish, Argentina", "Crowdin translate system(beta)"];
	const simples = ["acct", "index", "setting", "update", "setting"];
	const samples = ["acct.sample.html", "index.sample.html", "setting.sample.html", "update.sample.html", "setting.sample.js"];
	const pages = ["acct.html", "index.html", "setting.html", "update.html", "setting.vue.js"];
	let langstr = "";
	let refKey = [];
	const enJson=JSON.parse(fs.readFileSync(basefile + "view/make/language/en/main.json", "utf8"))
	for (let n = 0; n < langs.length; n++) {
		let lang = langs[n];
		let targetDir = basefile + "view/" + lang;
		if (!fs.existsSync(targetDir)) {
			fs.mkdirSync(targetDir);
		}
		langstr = langstr + "<a onclick=\"changelang('" + lang + '\')" class="pointer" style="margin:4px;border: 1px solid var(--color); padding: 3px">' + langsh[n] + "</a>";
		let mainJson=JSON.parse(fs.readFileSync(basefile + "view/make/language/" + lang + "/main.json", "utf8"))
		if(lang != "en"){
			Object.keys(enJson).forEach(function(key) {
				if(!mainJson[key]){
					mainJson[key]=enJson[key]
				}
			});
		}
		fs.writeFileSync(basefile + "view/" + lang + "/main.js", JSON.stringify(mainJson).replace(/^{/, "var lang = {"));
	}
	for (let i = 0; i < samples.length; i++) {
		let sample = samples[i];
		let sourceParent = fs.readFileSync(basefile +"view/make/" +sample, "utf8");
		let englishRefer = JSON.parse(fs.readFileSync(basefile +"view/make/language/en/" + simples[i] + ".json", "utf8"));
		for (let j = 0; j < langs.length; j++) {
			let source = sourceParent;
			let lang = langs[j];
			let target = JSON.parse(fs.readFileSync(basefile +"view/make/language/" + lang + "/" + simples[i] + ".json", "utf8"));
			if (lang == "ja") {
				Object.keys(target).forEach(function(key) {
					refKey.push(key);
					let str = target[key];
					if (pages[i] == "setting.vue.js") {
						str = str.replace(/"/g, '\\"');
					}
					var regExp = new RegExp("@@" + key + "@@", "g");
					source = source.replace(regExp, str);
				});
			} else {
				for (let k = 0; k < refKey.length; k++) {
					let tarKey = refKey[k];
					if (target[tarKey]) {
						var str = target[tarKey];
					} else {
						var str = englishRefer[tarKey];
					}
					if (pages[i] == "setting.vue.js") {
						if (str) {
							str = str.replace(/"/g, '\\"');
						}
					}
					var regExp = new RegExp("@@" + tarKey + "@@", "g");
					source = source.replace(regExp, str);
				}
			}
			if (lang == "ps") {
				source = source.replace(/@@comment-start@@/g, "");
				source = source.replace(/@@comment-end@@/g, "");
			} else {
				source = source.replace(/@@comment-start@@/g, "<!--");
				source = source.replace(/@@comment-end@@/g, "-->");
			}
			source = source.replace(/@@versionLetter@@/g, ver);
			source = source.replace(/@@gitHash@@/g, gitHash);
			source = source.replace(/@@gitHashShort@@/g, gitHash.slice(0, 7));
			source = source.replace(/@@lang@@/g, lang);
			source = source.replace(/@@langlist@@/g, langstr);
			fs.writeFileSync(basefile +"view/" + lang + "/" + pages[i], source);
		}
	}
}
main(ver, basefile);

//if --watch, to yarn dev
if (process.argv.indexOf("--watch") !== -1) {
    const chokidar = require("chokidar");
    console.log("watch mode(not hot-watch): when construction files are changed, refresh view files but not reload. Please reload manually.")
	const watcher = chokidar.watch(basefile +"view/make", {
		ignored: "view/make/make.js",
		persistent: true
	});
	watcher.on("ready", function() {
		console.log("watching...");
		watcher.on("change", function(path) {
			console.log(path + " changed.");
			main(ver, basefile);
		});
	});
}