import fs from "fs";

const databaseCSV = fs.readFileSync("database.csv", {
  encoding: "utf8",
  flag: "r",
});

export function splitNewLines(string) {
  return string.split(/\n/);
}

export function cleanupArrayOfStrings(arrayOfStrings) {
  return arrayOfStrings.map((line) => line.trim()).filter((line) => line != "");
}

export function stringCsvToDataObject(string) {
  let splitString = string.split(",");
  if (splitString[2].trim() == "") splitString[2] = splitString[1];

  const [
    nominative,
    accusative,
    pronominalPossessive,
    predicativePossessive,
    reflexive,
  ] = cleanupArrayOfStrings(splitString);

  return {
    nominative,
    accusative,
    pronominalPossessive,
    predicativePossessive,
    reflexive,
  };
}

export default function () {
  const databaseCSV = fs.readFileSync("database.csv", {
    encoding: "utf8",
    flag: "r",
  });
  return cleanupArrayOfStrings(splitNewLines(databaseCSV)).map((line) =>
    stringCsvToDataObject(line)
  );
}