import L from "../../utils/logger";
import fs from "fs";
import path from "path";
import execa from 'execa';

type options = {
  dst?: string;
};

async function customizeComponent(
  src: string,
  options: options = {}
): Promise<void> {
  let { dst = "custom" } = options;

  if (dst.slice(-3) === '.js') {
    dst = dst.slice(0, -3);
  }

  L.info(`customize ${src} into ${dst}.js ...`);

  try {
    const srcStat = fs.statSync(src);

    if (!srcStat.isDirectory()) {
      L.warn(`${src} is not a directory, skip...`);
      throw new Error(`${src} is not a directory`);
    }

    execa.commandSync(
      `cp ${path.join(src, "index.js")} ${path.join(src, dst + ".js")}`
    );

    fs.writeFileSync(path.join(src, "package.json"), `{"main": "./${dst}.js"}`);
  } catch (ex) {
    L.warn(`exception raised`);
    throw ex;
  }
}

export { customizeComponent };