helper.ts

/**
 * Copyright 2026 GitProxy Contributors
 *
 * 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 { PaginationOptions } from './types';

export const escapeRegex = (s: string): string => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');

export const buildSearchFilter = (
  baseQuery: Record<string, unknown>,
  searchFields: string[],
  search?: string,
): Record<string, unknown> => {
  if (!search) return baseQuery;
  const regex = new RegExp(escapeRegex(search), 'i');
  return { ...baseQuery, $or: searchFields.map((f) => ({ [f]: regex })) };
};

export const buildSort = (
  pagination: PaginationOptions | undefined,
  defaultField: string,
  defaultDir: 1 | -1,
): Record<string, 1 | -1> => {
  const field = pagination?.sortBy ?? defaultField;
  const dir =
    pagination?.sortOrder === 'asc' ? 1 : pagination?.sortOrder === 'desc' ? -1 : defaultDir;
  return { [field]: dir };
};

export const toClass = function <T, U>(obj: T, proto: U): U {
  const out = JSON.parse(JSON.stringify(obj));
  out.__proto__ = proto;
  return out as U;
};

export const trimTrailingDotGit = (str: string): string => {
  const target = '.git';
  if (str && str.endsWith(target)) {
    // extract string from 0 to the end minus the length of target
    return str.slice(0, -target.length);
  }
  return str;
};

export const trimPrefixRefsHeads = (str: string): string => {
  const target = 'refs/heads/';
  if (str.startsWith(target)) {
    // extract string from the end of the target to the end of str
    return str.slice(target.length);
  }
  return str;
};