ex3-tellFortune.js

/*------------------------------------------------------------------------------
Full description at: https://github.com/HackYourFuture/Assignments/tree/main/1-JavaScript/Week3#exercise-3-be-your-own-fortune-teller

Why pay a fortune teller when you can just program your fortune yourself?

1. Create four arrays, `numKids`, `partnerNames`, `locations` and `jobTitles`. 
   Give each array five random values that have to do with the name of 
   the variable.

2. Complete the function `selectRandomly`. This function should take an array 
   as a parameter and return a randomly selected element as its return value.

3. Complete the function named `tellFortune` as follows:

   - It should take four arguments (in the order listed): 
     * the array with the options for the number of children, 
     * the array with the options for the partner's name, 
     * the array with the options for the geographic location and 
     * the array with the options for the job title.
   - It should use the `selectRandomly` function to randomly select values from 
     the arrays.
   - It should return a string: "You will be a `jobTitle` in `location`, 
    married to `partnerName` with `numKids` kids."

4. Call the function three times, passing the arrays as arguments. Use `
   console.log` to display the results.

Note: The DRY principle is put into practice here: instead of repeating the code to 
randomly select array elements four times inside the `tellFortune` function 
body, this code is now written once only in a separated function.
-----------------------------------------------------------------------------*/

// This function should take an array as its parameter and return
// a randomly selected element as its return value.
function selectRandomly(array) {
  const randomIndex = Math.floor(Math.random() * array.length);
  return array[randomIndex];
}

export function tellFortune(
  numKidsArray,
  partnerNamesArray,
  locationsArray,
  jobTitlesArray
) {
  // Select random elements from each array using selectRandomly
  const numKids = selectRandomly(numKidsArray);
  const partnerName = selectRandomly(partnerNamesArray);
  const location = selectRandomly(locationsArray);
  const jobTitle = selectRandomly(jobTitlesArray);

  // Return the formatted fortune string
  return `You will be a ${jobTitle} in ${location}, married to ${partnerName} with ${numKids} kids.`;
}

function main() {
  const numKids = [0, 1, 2, 3, 4]; // Array of 5 possible numbers of kids
  const partnerNames = ['Alice', 'Bob', 'Charlie', 'Dana', 'Eve']; // Array of 5 partner names
  const locations = ['Amsterdam', 'Berlin', 'London', 'Paris', 'Rome']; // Array of 5 locations
  const jobTitles = ['Engineer', 'Teacher', 'Designer', 'Chef', 'Artist']; // Array of 5 job titles

  console.log(tellFortune(numKids, partnerNames, locations, jobTitles));
  console.log(tellFortune(numKids, partnerNames, locations, jobTitles));
  console.log(tellFortune(numKids, partnerNames, locations, jobTitles));
}

// ! Do not change or remove the code below
if (process.env.NODE_ENV !== 'test') {
  main();
}