const log = require("./logs.utils"); // Log Helper
const db = require("../services/dbAccess.services"); // DB Access
//const san  = require('../utils/sanitizer.utils');     // Sanitiser

import * as san from "../utils/sanitizer.utils";

async function checkCrs(input = "") {
  var INPUT = input.toUpperCase();
  var query = {
    $or: [{ "3ALPHA": INPUT }, { TIPLOC: INPUT }, { STANOX: INPUT }],
  };
  var result = await db.query("stations", query);
  log.out(
    "ldbUtils.checkCrs: Query results: " + JSON.stringify(result),
    "dbug"
  );
  return result;
}

// Needs to be moved to the frontend `ensureArray() func`
// Usage of this function should be migrated to the `translator` utilities.
async function cleanMessages(input) {
  log.out("ldbUtils.cleanMessages: Deprecated function has been called", "err");
  var out = [];
  if (typeof input.message == "string") {
    out.push(san.cleanNrcc(input.message));
  } else if (typeof input.message == "object") {
    for (var i = 0; i < input.message.length; i++) {
      out.push(san.cleanNrcc(input.message[i]));
    }
  }
  return out;
}

// Accepts an object but not an Array and returns it wrapped in an array.
async function cleanServices(input) {
  log.out("ldbUtils.cleanServices: Deprecated function has been called", "err");
  var out = [];
  if (!Array.isArray(input)) {
    log.out(`ldbUtils.cleanServices: Transforming input: ${input}`, "dbug");
    out.push(input);
    log.out(`ldbUtils.cleanServices: Returning output: ${out}`, "dbug");
    return out;
  } else {
    return input;
  }
}

async function cleanData(input) {
  try {
    if (input?.GetStationBoardResult?.trainServices) {
      log.out(
        "ldbUtils.cleanData: Changing train service data to array",
        "dbug"
      );
      input.GetStationBoardResult.trainServices.service = await ensureArray(
        input.GetStationBoardResult.trainServices.service
      );
    }
    if (input?.GetStationBoardResult?.busServices) {
      log.out("ldbUtils.cleanData: Changing bus service data to array", "dbug");
      input.GetStationBoardResult.busServices.service = await ensureArray(
        input.GetStationBoardResult.busServices.service
      );
    }
    if (input?.GetStationBoardResult?.ferryServices) {
      log.out(
        "ldbUtils.cleanData: Changing ferry service data to array",
        "dbug"
      );
      input.GetStationBoardResult.ferryServices.service = await ensureArray(
        input.GetStationBoardResult.ferryServices.service
      );
    }
  } catch (err) {
    log.out(`ldbUtils.cleanData: Error: ${err}`, "eror");
  }
  return input;
}

async function ensureArray(data) {
  if (!Array.isArray(data)) {
    return [data];
  }
  return data;
}

module.exports = {
  checkCrs,
  cleanMessages,
  cleanServices,
  cleanData,
};