// workaround by https://github.com/martpie/next-transpile-modules/issues/143#issuecomment-817467144

const fs = require('fs');
const path = require('path');

const nodeModulesPaths = [
  path.resolve(__dirname, '../../node_modules'),
  path.resolve(__dirname, '../../../../node_modules'),
];

/**
 * @typedef { { ignorePackageNames: string[] } } Opts
 */

/** @type {Opts} */
const defaultOpts = { ignorePackageNames: [] };

/**
 * @param scopes {string[]}
 */
exports.listScopedPackages = (scopes, opts = defaultOpts) => {
  /** @type {string[]} */
  const scopedPackages = [];

  nodeModulesPaths.forEach((nodeModulesPath) => {
    fs.readdirSync(nodeModulesPath)
      .filter(name => scopes.includes(name))
      .forEach((scope) => {
        fs.readdirSync(path.resolve(nodeModulesPath, scope))
          .filter(name => !name.startsWith('.'))
          .forEach((folderName) => {
            const packageJsonPath = path.resolve(
              nodeModulesPath,
              scope,
              folderName,
              'package.json',
            );
            if (fs.existsSync(packageJsonPath)) {
              const { name } = require(packageJsonPath);
              if (!opts.ignorePackageNames.includes(name)) {
                scopedPackages.push(name);
              }
            }
          });
      });
  });

  return scopedPackages;
};

/**
 * @param prefixes {string[]}
 */
exports.listPrefixedPackages = (prefixes, opts = defaultOpts) => {
  /** @type {string[]} */
  const prefixedPackages = [];

  nodeModulesPaths.forEach((nodeModulesPath) => {
    fs.readdirSync(nodeModulesPath)
      .filter(name => prefixes.some(prefix => name.startsWith(prefix)))
      .filter(name => !name.startsWith('.'))
      .forEach((folderName) => {
        const packageJsonPath = path.resolve(
          nodeModulesPath,
          folderName,
          'package.json',
        );
        if (fs.existsSync(packageJsonPath)) {
          const { name } = require(packageJsonPath);
          if (!opts.ignorePackageNames.includes(name)) {
            prefixedPackages.push(name);
          }
        }
      });
  });

  return prefixedPackages;
};