const gulp = require("gulp");
const ts = require("gulp-typescript");
const swc = require("gulp-swc");
const tsProject = ts.createProject("tsconfig.json");
const argv = require("yargs").argv;
const rimraf = require("rimraf");
const plumber = require("gulp-plumber");
const sourcemaps = require("gulp-sourcemaps");
const fs = require("fs");
const swcOptions = {
	jsc: {
		parser: {
			syntax: "typescript",
			tsx: false,
			decorators: true,
			dynamicImport: true,
		},
		transform: {
			react: {
				runtime: "automatic",
			},
		},
		target: "es2022",
		loose: false,
		externalHelpers: false,
		keepClassNames: true,
	},
	module: {
		type: "es6",
		strict: true,
		strictMode: true,
		lazy: false,
		noInterop: false,
	},
	sourceMaps: true,
	minify: false,
};

gulp.task(
	"watch",
	function () {
		gulp.watch("./src", gulp.series("default"));
		gulp.watch("./translations", gulp.series("default"));
	},
	{debounceDelay: 10},
);

// Clean task to delete the dist directory
gulp.task("clean", (cb) => {
	return rimraf.rimraf("dist").then(cb());
});
const exec = require("child_process").exec;
// Task to compile TypeScript files using SWC
gulp.task("scripts", async () => {
	if (argv.swc) {
		return gulp
			.src("src/**/*.ts")
			.pipe(sourcemaps.init())
			.pipe(plumber()) // Prevent pipe breaking caused by errors
			.pipe(swc(swcOptions))
			.pipe(sourcemaps.write("."))
			.pipe(gulp.dest("dist"));
	} else if (argv.bunswc) {
		return await new Promise((ret) => {
			exec("bun swc --strip-leading-paths ./src -s -d ./dist/ -C jsc.target=es2022").on(
				"exit",
				function (code) {
					ret();
				},
			);
		});
	} else {
		console.warn("[WARN] Using TSC compiler, will be slower than SWC");
		return gulp
			.src("src/**/*.ts")
			.pipe(sourcemaps.init())
			.pipe(plumber()) // Prevent pipe breaking caused by errors
			.pipe(tsProject())
			.pipe(sourcemaps.write("."))
			.pipe(gulp.dest("dist"));
	}
});

// Task to copy HTML files
gulp.task("copy-html", () => {
	return gulp
		.src("src/**/*.html")
		.pipe(plumber()) // Prevent pipe breaking caused by errors
		.pipe(gulp.dest("dist"));
});
gulp.task("copy-translations", () => {
	let langs = fs.readdirSync("translations");
	langs = langs.filter((e) => e !== "qqq.json");
	const langobj = {};
	for (const lang of langs) {
		const json = JSON.parse(fs.readFileSync("translations/" + lang).toString());
		langobj[lang] = json.readableName;
	}
	if (!fs.existsSync("dist/webpage/translations")) fs.mkdirSync("dist/webpage/translations");
	fs.writeFileSync(
		"dist/webpage/translations/langs.js",
		`const langs=${JSON.stringify(langobj)};export{langs}`,
	);
	return gulp
		.src("translations/*.json")
		.pipe(plumber()) // Prevent pipe breaking caused by errors
		.pipe(gulp.dest("dist/webpage/translations"));
});
// Task to copy other static assets (e.g., CSS, images)
gulp.task("copy-assets", () => {
	return gulp
		.src(
			[
				"src/**/*.css",
				"src/**/*.bin",
				"src/**/*.ico",
				"src/**/*.json",
				"src/**/*.js",
				"src/**/*.png",
				"src/**/*.jpg",
				"src/**/*.jpeg",
				"src/**/*.webp",
				"src/**/*.gif",
				"src/**/*.svg",
				"src/**/*.jasf",
				"src/**/*.txt",
			],
			{encoding: false},
		)
		.pipe(plumber()) // Prevent pipe breaking caused by errors
		.pipe(gulp.dest("dist"));
});

// Default task to run all tasks
gulp.task(
	"default",
	gulp.series("clean", gulp.parallel("scripts", "copy-html", "copy-assets"), "copy-translations"),
);