gistfile1.txt

// Type definition for wand using tuple
type Wand = [core: string, length: number, material: string]

// Enum for house names
enum House {
  Gryffindor = 'Gryffindor',
  Slytherin = 'Slytherin'
}

// Type for character
interface Character {
  name: string
  age: number
  isWizard: boolean
  house: House
  spells: string[]
  wand: Wand
}

// Array to store all characters
const characters: Character[] = []

// Function to add a new character
function addCharacter (character: Character) {
  characters.push(character)
}

// Function to display all characters
function displayCharacters () {
  for (const character of characters) {
    const wizard = character.isWizard ? 'wizard' : 'muggle'
    const reversed = character.spells.reverse()
    const [last, ...first] = reversed
    const firstReversed = first.reverse()
    const firstJoined = firstReversed.join(', ')
    const spellsConjuction = first.length > 1 ? ', and' : ' and'
    const hasSpells = `${firstJoined}${spellsConjuction} ${last}`
    const spells = character.spells.length > 1 ? `the spells ${hasSpells}` : 'no spells'
    const [core, length, material] = character.wand
    const wand = length > 0
      ? `whose wand has a ${core} core, a length of ${length}, and a ${material} material`
      : 'who has no wand'

    const message = `${character.name} is a ${character.age} year old ${wizard} from house ${character.house} with ${spells} ${wand}!`
    console.log(message)
  }
}

// Function to filter characters by house
function filterByHouse (house: House) {
  return characters.filter(character => character.house === house)
}

// Function to count wizards vs muggles
function countByMagicalStatus () {
  const wizards = characters.filter(character => character.isWizard)
  const summary = {
    wizards: wizards.length,
    muggles: characters.length - wizards.length
  }
  return summary
}

// Sample data
addCharacter({
  name: "Harry Potter",
  age: 17,
  isWizard: true,
  house: House.Gryffindor,
  spells: ["Expelliarmus", "Expecto Patronum"],
  wand: ["Phoenix Feather", 11, "Holly"]
});

addCharacter({
  name: "Hermione Granger",
  age: 17,
  isWizard: true,
  house: House.Gryffindor,
  spells: ["Alohomora", "Petrificus Totalus"],
  wand: ["Dragon Heartstring", 10.75, "Vine"]
});

addCharacter({
  name: "Dudley Dursley",
  age: 18,
  isWizard: false,
  house: House.Slytherin,
  spells: [],
  wand: ["None", 0, "None"]
});

// Displaying characters
displayCharacters()

// Filter by house
console.log("\n Characters from Gryffindor:");
console.log(filterByHouse(House.Gryffindor));

// Magical status summary
const summary = countByMagicalStatus();
console.log(`\n Wizards: ${summary.wizards}, Muggles: ${summary.muggles}`);