import builtins from "builtin-modules";
import { copyFile } from "fs/promises";
import esbuild from "esbuild";
import path from "path";
import process from "process";
import { readFileSync } from "fs";

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");

// Use variables to copy build to good directory
const data = JSON.parse(readFileSync("plugin-data.json", "utf8"));

const { plugin_id, plugin_files, dev_root, prod_root } = data;

async function copyPluginFiles() {
	for (const file of plugin_files) {
		await copyFile(file, path.join(dest, file));
	}
}

const copyFilesToDestination = {
	name: "copy",
	setup(build) {
		build.onEnd((result) => {
			copyPluginFiles()
		});
	},
};

const context = await esbuild.context({
	banner: {
		js: banner,
	},
	entryPoints: ["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,
	plugins: [
		copyFilesToDestination
	],
	outfile: "main.js",
});

let dest = path.join(dev_root, plugin_id);

if (prod) {
	dest = path.join(prod_root, plugin_id);
	await context.rebuild();
	process.exit(0);
} else {
	await context.watch();
}