import { uglify } from "rollup-plugin-uglify";
import babel from "rollup-plugin-babel";
import resolve from "rollup-plugin-node-resolve";
import license from "rollup-plugin-license";
import fs from "fs";

let buildType = config => {
	let options = {
		input: "build/skinview3d.js",
		output: [],
		external: [
			"three"
		],
		plugins: [
			resolve()
		]
	};

	switch (config.format) {
		case "umd":
			options.output.push({
				format: "umd",
				name: "skinview3d",
				file: `build/skinview3d${config.postfix}.js`,
				indent: "\t",
				sourcemap: true,
				globals: {
					"three": "THREE"
				}
			});
			break;

		case "es":
			options.output.push({
				format: "es",
				file: `build/skinview3d${config.postfix}.js`,
				indent: "\t",
				sourcemap: true,
			});
			break;

		default:
			throw `Unknown format: ${config.format}`;
	}

	if (config.babel) {
		options.plugins.push(
			babel({
				exclude: "node_modules/**"
			})
		);
	}

	if (config.uglify) {
		options.plugins.push(
			uglify({
				output: {
					comments: "some"
				}
			})
		);
	}

	options.plugins.push(
		license({
			sourcemap: true,
			banner: `
				skinview3d (https://github.com/to2mbn/skinview3d)

				${fs.readFileSync("LICENSE").toString()}
				`
		})
	);
	return options;
};
export { buildType };