monkeytype/backend/utils/validation.ts

import _ from "lodash";
import profanities from "../constants/profanities";

export function inRange(value: number, min: number, max: number): boolean {
  return value >= min && value <= max;
}

export function isUsernameValid(name: string): boolean {
  if (_.isNil(name) || !inRange(name.length, 1, 16)) {
    return false;
  }

  const normalizedName = name.toLowerCase();

  const beginsWithPeriod = /^\..*/.test(normalizedName);
  if (beginsWithPeriod) {
    return false;
  }

  const isProfanity = profanities.find((profanity) =>
    normalizedName.includes(profanity)
  );
  if (isProfanity) {
    return false;
  }

  return /^[0-9a-zA-Z_.-]+$/.test(name);
}

export function isTagPresetNameValid(name: string): boolean {
  if (_.isNil(name) || !inRange(name.length, 1, 16)) {
    return false;
  }

  return /^[0-9a-zA-Z_.-]+$/.test(name);
}

export function isTestTooShort(result: MonkeyTypes.CompletedEvent): boolean {
  const { mode, mode2, customText, testDuration } = result;

  if (mode === "time") {
    const setTimeTooShort = mode2 > 0 && mode2 < 15;
    const infiniteTimeTooShort = mode2 === 0 && testDuration < 15;
    return setTimeTooShort || infiniteTimeTooShort;
  }

  if (mode === "words") {
    const setWordTooShort = mode2 > 0 && mode2 < 10;
    const infiniteWordTooShort = mode2 === 0 && testDuration < 15;
    return setWordTooShort || infiniteWordTooShort;
  }

  if (mode === "custom") {
    if (!customText) return true;
    const { isWordRandom, isTimeRandom, textLen, word, time } = customText;
    const setTextTooShort =
      !isWordRandom && !isTimeRandom && _.isNumber(textLen) && textLen < 10;
    const randomWordsTooShort = isWordRandom && !isTimeRandom && word < 10;
    const randomTimeTooShort = !isWordRandom && isTimeRandom && time < 15;
    return setTextTooShort || randomWordsTooShort || randomTimeTooShort;
  }

  if (mode === "zen") {
    return testDuration < 15;
  }

  return false;
}