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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultPath = defaultPath;
/**
* Given a current request/response path, gives the path appropriate for storing
* in a cookie. This is basically the "directory" of a "file" in the path, but
* is specified by {@link https://www.rfc-editor.org/rfc/rfc6265.html#section-5.1.4 | RFC6265 - Section 5.1.4}.
*
* @remarks
* ### RFC6265 - Section 5.1.4
*
* The user agent MUST use an algorithm equivalent to the following algorithm to compute the default-path of a cookie:
*
* 1. Let uri-path be the path portion of the request-uri if such a
* portion exists (and empty otherwise). For example, if the
* request-uri contains just a path (and optional query string),
* then the uri-path is that path (without the %x3F ("?") character
* or query string), and if the request-uri contains a full
* absoluteURI, the uri-path is the path component of that URI.
*
* 2. If the uri-path is empty or if the first character of the uri-
* path is not a %x2F ("/") character, output %x2F ("/") and skip
* the remaining steps.
*
* 3. If the uri-path contains no more than one %x2F ("/") character,
* output %x2F ("/") and skip the remaining step.
*
* 4. Output the characters of the uri-path from the first character up
* to, but not including, the right-most %x2F ("/").
*
* @example
* ```
* defaultPath('') === '/'
* defaultPath('/some-path') === '/'
* defaultPath('/some-parent-path/some-path') === '/some-parent-path'
* defaultPath('relative-path') === '/'
* ```
*
* @param path - the path portion of the request-uri (excluding the hostname, query, fragment, and so on)
* @public
*/
function defaultPath(path) {
// "2. If the uri-path is empty or if the first character of the uri-path is not
// a %x2F ("/") character, output %x2F ("/") and skip the remaining steps.
if (!path || path.slice(0, 1) !== '/') {
return '/';
}
// "3. If the uri-path contains no more than one %x2F ("/") character, output
// %x2F ("/") and skip the remaining step."
if (path === '/') {
return path;
}
const rightSlash = path.lastIndexOf('/');
if (rightSlash === 0) {
return '/';
}
// "4. Output the characters of the uri-path from the first character up to,
// but not including, the right-most %x2F ("/")."
return path.slice(0, rightSlash);
}
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