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import { QueryOrParams } from "../request.ts";
/** * Removes slash repetitions from the url. Ex. //some/path///string// -> /some/path/string/ * @param {string} url the url * @returns {string} url withour repetitions */export function removeSlashDoubles(url: string): string {  return url.replaceAll(/\/{2,}/ig, "/");}
/** * Removes trailing slash from url, ex. /some/path/ -> /some/path * @param {string} url the url * @returns {string} url without trailing slash */export function removeTrailingSlash(url: string): string {  if (url.length > 1 && url.endsWith("/")) return url.slice(0, -1);    return url;}
/** * Applies {@link removeSlashDoubles} and {@link removeTrailingSlash} on the url * @param url the url * @returns {string} modified url */export function sanitize(url: string): string {  return removeTrailingSlash(removeSlashDoubles(url)).toLowerCase();}
/** * Checks whether request url matches url from router (model url) if it has params * @param {string} requestUrl * @param {string} modelUrl * @returns {boolean} */export function matchWithParams(requestUrl: string, modelUrl: string): boolean {  const modelParts = modelUrl.split("/");  const requestParts = requestUrl.split("/");  if (modelParts.length !== requestParts.length) return false;
  for (let i = 0; i < modelParts.length; i++) {    if (modelParts[i].startsWith(":")) continue;
    if (modelParts[i] !== requestParts[i]) return false;  }  return true;}
/** * Checks whether model url contains params * @param url * @returns {boolean} */export function hasParams(url: string): boolean {  return /:/.test(url);}
/** * Extracts parameters from given requestUrl based on modelUrl * @param requestUrl  * @param modelUrl  * @returns {QueryOrParams} */export function extractParams(  requestUrl: string,  modelUrl: string,): QueryOrParams {  let params: QueryOrParams = {};  if (hasParams(modelUrl) && matchWithParams(requestUrl, modelUrl)) {    const modelParts = modelUrl.split("/");    const requestParts = requestUrl.split("?")[0].split("/");    for (let i = 0; i < modelParts.length; i++) {      if (modelParts[i].startsWith(":")) {        const name = modelParts[i].slice(1);        const value = requestParts[i];        params[name] = value;      }    }  }  return params;}
/** * Checks whether request url matches url from router (model url) * @param requestUrl the request url * @param modelUrl the model url * @returns {boolean} */export function matchPath(requestUrl: string, modelUrl: string): boolean {  /* For now, only check if equal  TODO:    - match with parameters like /user/:id  */  modelUrl = sanitize(modelUrl);  const noQueryString = sanitize(requestUrl.split("?")[0]);
  if (hasParams(modelUrl)) return matchWithParams(noQueryString, modelUrl);
  // only middleware can have * in path so we don't have to look for params  if (modelUrl.endsWith("*")) return noQueryString.startsWith(modelUrl.slice(0, -2));
  return noQueryString === modelUrl;}