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import type { Logger } from "../domain.ts";import type { Functions } from "./mod.ts";
export const _extractPathnames = (functions: Functions): string[] =>  functions.map(([pathname]) => pathname);
export const _getLocations = (pathnames: string[]): string[] => {  const fragmentMatcher = /:[^\\\/]+/g;  return pathnames.map((path) => {    if (fragmentMatcher.test(path)) {      return `~* ^${        path.replaceAll("/", "\\/").replaceAll(fragmentMatcher, "[^\\/]+")      }$`;    }    return `= ${path}`;  });};
export const _getConfig = (hostname: string, port: number) =>  (locations: string[]) =>    locations.map((location) =>      `location ${location} {\n  proxy_pass http://${hostname}:${port.toString()};\n}`    ).join("\n");
export const _writeFile = (filepath: string) =>  (config: string) => Deno.writeTextFile(filepath, config);
export const writeNginxLocations = (  options: {    log?: Logger;    functions: Functions;    filepath: string;    hostname: string;    port: number;  },) =>  Promise.resolve(options.functions)    .then(_extractPathnames)    .then(_getLocations)    .then(_getConfig(options.hostname, options.port))    .then(_writeFile(options.filepath));