"use strict";
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.dev/license
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.stripTrailingSlash = stripTrailingSlash;
exports.stripLeadingSlash = stripLeadingSlash;
exports.addLeadingSlash = addLeadingSlash;
exports.addTrailingSlash = addTrailingSlash;
exports.joinUrlParts = joinUrlParts;
/**
 * Removes the trailing slash from a URL if it exists.
 *
 * @param url - The URL string from which to remove the trailing slash.
 * @returns The URL string without a trailing slash.
 *
 * @example
 * ```js
 * stripTrailingSlash('path/'); // 'path'
 * stripTrailingSlash('/path');  // '/path'
 * stripTrailingSlash('/'); // '/'
 * stripTrailingSlash(''); // ''
 * ```
 */
function stripTrailingSlash(url) {
    // Check if the last character of the URL is a slash
    return url.length > 1 && url.at(-1) === '/' ? url.slice(0, -1) : url;
}
/**
 * Removes the leading slash from a URL if it exists.
 *
 * @param url - The URL string from which to remove the leading slash.
 * @returns The URL string without a leading slash.
 *
 * @example
 * ```js
 * stripLeadingSlash('/path'); // 'path'
 * stripLeadingSlash('/path/');  // 'path/'
 * stripLeadingSlash('/'); // '/'
 * stripLeadingSlash(''); // ''
 * ```
 */
function stripLeadingSlash(url) {
    // Check if the first character of the URL is a slash
    return url.length > 1 && url[0] === '/' ? url.slice(1) : url;
}
/**
 * Adds a leading slash to a URL if it does not already have one.
 *
 * @param url - The URL string to which the leading slash will be added.
 * @returns The URL string with a leading slash.
 *
 * @example
 * ```js
 * addLeadingSlash('path'); // '/path'
 * addLeadingSlash('/path'); // '/path'
 * ```
 */
function addLeadingSlash(url) {
    // Check if the URL already starts with a slash
    return url[0] === '/' ? url : `/${url}`;
}
/**
 * Adds a trailing slash to a URL if it does not already have one.
 *
 * @param url - The URL string to which the trailing slash will be added.
 * @returns The URL string with a trailing slash.
 *
 * @example
 * ```js
 * addTrailingSlash('path'); // 'path/'
 * addTrailingSlash('path/'); // 'path/'
 * ```
 */
function addTrailingSlash(url) {
    // Check if the URL already end with a slash
    return url.at(-1) === '/' ? url : `${url}/`;
}
/**
 * Joins URL parts into a single URL string.
 *
 * This function takes multiple URL segments, normalizes them by removing leading
 * and trailing slashes where appropriate, and then joins them into a single URL.
 *
 * @param parts - The parts of the URL to join. Each part can be a string with or without slashes.
 * @returns The joined URL string, with normalized slashes.
 *
 * @example
 * ```js
 * joinUrlParts('path/', '/to/resource'); // '/path/to/resource'
 * joinUrlParts('/path/', 'to/resource'); // '/path/to/resource'
 * joinUrlParts('http://localhost/path/', 'to/resource'); // 'http://localhost/path/to/resource'
 * joinUrlParts('', ''); // '/'
 * ```
 */
function joinUrlParts(...parts) {
    const normalizeParts = [];
    for (const part of parts) {
        if (part === '') {
            // Skip any empty parts
            continue;
        }
        let normalizedPart = part;
        if (part[0] === '/') {
            normalizedPart = normalizedPart.slice(1);
        }
        if (part.at(-1) === '/') {
            normalizedPart = normalizedPart.slice(0, -1);
        }
        if (normalizedPart !== '') {
            normalizeParts.push(normalizedPart);
        }
    }
    const protocolMatch = normalizeParts.length && /^https?:\/\//.test(normalizeParts[0]);
    const joinedParts = normalizeParts.join('/');
    return protocolMatch ? joinedParts : addLeadingSlash(joinedParts);
}
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