import esbuild from "esbuild";
import process from "process";
import builtins from "builtin-modules";
import fs from "fs/promises";
import path from "path";

const banner = `/*
THIS IS A GENERATED/BUNDLED FILE BY ESBUILD
if you want to view the source, please visit the github repository of this plugin
*/
`;

const prod = process.argv[2] === "production";

// Helper function to copy files
async function copyFile(src, destDir) {
	const dest = path.join(destDir, path.basename(src));
	await fs.mkdir(destDir, { recursive: true });
	await fs.copyFile(src, dest);
	console.log(`Copied ${src} -> ${dest}`);
}

// esbuild setup
const context = await esbuild.context({
	banner: {
		js: banner,
	},
	entryPoints: ["src/main.ts"],
	bundle: true,
	external: [
		"obsidian",
		"electron",
		"@codemirror/autocomplete",
		"@codemirror/collab",
		"@codemirror/commands",
		"@codemirror/language",
		"@codemirror/lint",
		"@codemirror/search",
		"@codemirror/state",
		"@codemirror/view",
		"@lezer/common",
		"@lezer/highlight",
		"@lezer/lr",
		...builtins,
	],
	format: "cjs",
	target: "es2018",
	logLevel: "info",
	sourcemap: prod ? false : "inline",
	treeShaking: true,
	outfile: "./dist/main.js",
	minify: prod,
});

async function copyAssets() {
	await copyFile("src/styles.css", "dist");
	await copyFile("manifest.json", "dist");
}

if (prod) {
	await context.rebuild();
	await copyAssets();
	process.exit(0);
} else {
	await context.watch();
	await copyAssets();
}