'use strict'
const PlayCard = require('./PlayCard')

/**
 * Represent a deck of card, with base module Array
 */
class Deck extends Array {
  constructor () {
    super()

    /**
     * initialize the Deck, pushes 52 PlayCard to super{array}
     */
    for (let i = 0; i < 52; i++) {
      super.push(new PlayCard(i + 1))
    }

    /**
     * @type {Array} is an array of hands
     */
    this._hands = []
  }

  /**
    * shuffles the order of the array
    */
  shuffle () {
    const shuffled = []

    do {
      const randomIndex = Math.floor(Math.random() * this.length)

      shuffled.push(this[randomIndex])
      this.splice(randomIndex, 1) // removes at index
    } while (this.length > 0)

    this.push(...shuffled)
  }

  /**
    * collects all the card from all hands that have at least one card
  */
  collect () {
    this._hands.forEach(hand => {
      do {
        // collection of all cards from every hand
        this.push(hand.pop())
      } while (hand.length > 0)
    })

    this._hands = []
  }

  /**
    * @param {array} hand it removes  the last card from the deck, and puts it in the hand of the caller
  */
  pickACard (hand) {
    if (this.length === 0) {
      throw Error('No more cards in the deck, to many players?')
    }
    hand.push(this.pop())

    if (!this._hands.includes(hand)) {
      this._hands.push(hand)
    }
  }
}

module.exports = Deck