import axios from "axios";
import { log } from "../logs.js";

const baseUrl = "https://mobileapi.dsbcontrol.de";

export async function getAuthtoken(username, password) {
  const response = await axios.get(
    `${baseUrl}/authid?user=${username}&password=${password}&bundleid&appversion&osversion&pushid`,
  );
  if (response.data == "") throw "Wrong DSB username or password";
  return response.data;
}

export async function getTimetables(authtoken) {
  const response = await axios.get(
    `${baseUrl}/dsbtimetables?authid=${authtoken}`,
  );
  const timetables = response.data;

  const urls = [];
  timetables.forEach((timetable) => {
    const rawTimestamp = timetable.Date;
    // Convert the timestamp to the correct
    // format so new Date() accepts it
    const date = rawTimestamp.split(" ")[0].split(".").reverse().join("-");
    const time = rawTimestamp.split(" ")[1];
    const timestamp = date + " " + time;
    urls.push({
      title: timetable.Title,
      url: timetable.Childs[0].Detail,
      updatedAt: new Date(timestamp),
    });
  });

  return urls;
}

// List of files that include timetable data
const dsbFiles = ["Schüler_Monitor - subst_001", "Schüler Morgen - subst_001"];

export class DSBClient {
  constructor(dsbUser, dsbPassword) {
    this.dsbUser = dsbUser;
    this.dsbPassword = dsbPassword;
  }
  async getFiles() {
    try {
      // Get authtoken
      const token = await getAuthtoken(this.dsbUser, this.dsbPassword);
      // Fetch available files
      const response = await getTimetables(token);
      // Filter files that should be parsed
      const timetables = response.filter((e) => dsbFiles.includes(e.title));
      // Fetch the contents
      const files = [];
      for (let timetable of timetables) {
        const result = await axios.request({
          method: "GET",
          url: timetable.url,
          responseEncoding: "binary",
        });
        files.push(result.data);
      }

      return files;
    } catch (error) {
      log("Parser / DSB Mobile", "Error getting data: " + error);
      return [];
    }
  }
}