/*
 * Copyright 2021-2023 Lightbend Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import * as fs from 'fs';
import * as path from 'path';
import * as protobuf from 'protobufjs';

/** @internal */
export function loadSync(
  desc: string | string[],
  includeDirs: string[],
): protobuf.Root {
  const root = new protobuf.Root();
  root.resolvePath = function (_origin, target) {
    for (let i = 0; i < includeDirs.length; i++) {
      const directory = includeDirs[i];
      const fullPath = path.resolve(directory, target);
      try {
        fs.accessSync(fullPath, fs.constants.R_OK);
        return fullPath;
      } catch (err) {
        // ignore
      }
    }
    return null;
  };

  root.loadSync(desc);
  root.resolveAll();
  return root;
}

/** @internal */
export const moduleIncludeDirs = [
  path.join(__dirname, '..', 'proto'),
  path.join(__dirname, '..', 'protoc', 'include'),
  path.join(__dirname, '..', '..', 'proto'),
  path.join(__dirname, '..', '..', 'protoc', 'include'),
];