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import { assert } from "./deps.ts";
/** Turns a set-cookie header into a useable cookie header string value. */function getSetCookie(headers: Headers): string {  return headers.get("set-cookie")!    .split(", ")    .flatMap((cookie) => cookie.split("; ")[0])    .join("; ");}
/** Client initialisation parameters. */export interface ClientInit {  /** Switch IP address or host. */  host: string;  /** Switch REST API version. Defaults to `latest`. */  version?: "v1" | "v10.04" | "v10.08" | "v10.09" | "v10.10" | "latest";  /** Switch login username. Defaults to `admin`. */  username?: string;  /** Switch login password. Defaults to an empty string. */  password?: string;}
/** Contains methods for logging in/out and making authenticated requests. */export class Client {  #username: string;  #password: string;  #baseURL: URL;  #cookie?: string;
  constructor(init: ClientInit) {    const version = init.version ??      Deno.env.get("ARUBAOS_CX_VERSION") ?? "latest";    this.#username = init.username ??      Deno.env.get("ARUBAOS_CX_USERNAME") ?? "admin";    this.#password = init.password ??      Deno.env.get("ARUBAOS_CX_PASSWORD") ?? "";    this.#baseURL = new URL("/rest/" + version, "https://" + init.host);  }
  /** Creates an authenticated request. */  #request(path: string, init?: RequestInit): Request {    const request = new Request(this.#baseURL + path, init);    if (this.#cookie) {      request.headers.set("cookie", this.#cookie!);    }    return request;  }
  /** Performs an authenticated request. */  async fetch(path: string, init?: RequestInit): Promise<Response> {    return await fetch(this.#request(path, init));  }
  /** Logs the user in and stores the authentication cookie. */  async login(): Promise<void> {    const params = new URLSearchParams({      username: this.#username,      password: this.#password,    });    const response = await this.fetch("/login?" + params, {      method: "POST",    });    /** Ensures authentication succeeded. If not, prints the provided reason. */    assert(response.ok, await response.text());    this.#cookie = getSetCookie(response.headers);  }
  /** Logs the user out and removes the authentication cookie. */  async logout(): Promise<void> {    const response = await this.fetch("/logout", {      method: "POST",    });    /** Ensures deauthentication succeeded. If not, prints the provided reason. */    assert(response.ok, await response.text());    this.#cookie = undefined;  }
  /** Performs a request inbetween automatic login/logout. */  async fetchOnce(path: string, init?: RequestInit): Promise<Response> {    await this.login();    const response = await this.fetch(path, init);    await this.logout();    return response;  }}
/** Creates a client and performs a request inbetween automatic login/logout. */export async function fetchOnce(  clientInit: ClientInit,  path: string,  init?: RequestInit,): Promise<Response> {  const client = new Client(clientInit);  return await client.fetchOnce(path, init);}