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// 1. Despot some money

// 2. Determine number of lines to bet on

// 3. Collect a bet amount

// 4. Spin the slot machine

// 5. check if the user won

// 6. give the user their winnings

// 7. play again

const prompt = require("prompt-sync")();

const ROWS = 3;

const COLS = 3;

const SYMBOLS_COUNT = {

"A": 2,

"B": 4,

"C": 6,

"D": 7

}

const SYMBOL_VALUES = {

"A": 5,

"B": 4,

"C": 3,

"D": 2

}

const deposit = () => {

while (true) {

const depositAmount = prompt("Enter a deposit amount: ");

const numberDepositAmount = parseFloat(depositAmount);

if (isNaN(numberDepositAmount) || numberDepositAmount <= 0) {

console.log("Invalid deposit amount, try again.")

} else {

return numberDepositAmount;

}

}

};

const getNumberOfLines = () => {

while (true) {

const lines = prompt("Enter the number of lines to bet on (1-3): ");

const numberOfLines = parseFloat(lines);

if (isNaN(numberOfLines) || numberOfLines <= 0 || numberOfLines > 3) {

console.log("Invalid number of lines, try again.")

} else {

return numberOfLines;

}

}

}

const getBet = (balance, lines) => {

while (true) {

const bet = prompt("Enter the bet per line: ");

const numberBet = parseFloat(bet);

if (isNaN(numberBet) || numberBet <= 0 || numberBet > balance / lines) {

console.log("Invalid bet, try again.")

} else {

return numberBet;

}

}

}

const spin = () => {

const symbols = [];

for (const [symbol, count] of Object.entries(SYMBOLS_COUNT)) {

for (let i = 0; i < count; i++) {

symbols.push(symbol);

}

}

const reels = []

for (let i = 0; i < COLS; i++) {

reels.push([]);

const reelSymbols = [... symbols];

for (let j = 0; j < ROWS; j++) {

const randomIndex = Math.floor(Math.random() * reelSymbols.length);

const selectedSymbol = reelSymbols[randomIndex];

reels[i].push(selectedSymbol);

reelSymbols.splice(randomIndex, 1);

}

}

return reels;

}

const transpose = (reels) => {

const rows = [];

for (let i = 0; i < ROWS; i++) {

rows.push([]);

for (let j =0; j < COLS; j++) {

rows[i].push(reels[j][i]);

}

}

return rows;

}

const printRows = (rows) => {

for (const row of rows) {

let rowString = "";

for (const [i, symbol] of row.entries()) {

rowString += symbol

if (i != row.length - 1) {

rowString += " | "

}

}

console.log(rowString);

}

}

const getWinnings = (rows, bet, lines) => {

let winnings = 0;

for (let row = 0; row < lines; row++) {

const symbols = rows[row];

let allSame = true;

for (const symbol of symbols) {

if (symbol != symbols[0]) {

allSame = false;

break;

}

}

if (allSame) {

winnings += bet * SYMBOL_VALUES[symbols[0]]

}

}

return winnings;

}

const game = () => {

let balance = deposit();

while (true) {

console.log("You have a balance of $" + balance)

const numberOfLines = getNumberOfLines();

const bet = getBet(balance, numberOfLines);

balance -= bet * numberOfLines;

const reels = spin();

const rows = transpose(reels);

printRows(rows);

const winnings = getWinnings(rows, bet, numberOfLines);

balance += winnings;

console.log("You won, $" + winnings.toString());

if (balance <= 0) {

console.log("You ran out of money!")

break;

}

const playAgain = prompt("Do you want to play again (y/n)?");

if (playAgain != "y") break;

}

};

game();