$Running = $true
$GameOver = $false
$Wallet = 0
$Cards = 0,0,0
function AskQuestion($prompt)
{
	while($true)
	{
		$ans = Read-Host $prompt "?"
		if($ans)
		{
			return $ans.ToUpper()
		}
		else
		{
			Write-Host "PLEASE ANSWER THE QUESTION."
		}
	}
}
function IsAnInt($value)
{
	return $value -match "^[-*\d]+$"
}
function GetIntInput($prompt)
{
	while($true)
	{
		$ans = Read-Host $prompt " "
		if(IsAnInt($ans))
		{
			return [int]$ans
		}
		else
		{
			Write-Host "YOU DID NOT ENTER AN INTEGER."
		}
	}
}
function AskForBet()
{
	while($true)
	{
		$bet = GetIntInput("WHAT IS YOUR BET?")
		if($bet -lt 0)
		{
			Write-Host "PLEASE BET A NON-NEGATIVE AMOUNT."
		}
		elseif($bet -gt $Wallet)
		{
			Write-Host "SORRY MY FRIEND, BUT YOU BET TOO MUCH."
			Write-Host "YOU HAVE ONLY" $Wallet "DOLLARS TO BET."
		}
		else
		{
			return $bet
		}
	}
}
function AskToPlayAgain()
{
	while($true)
	{
		$ans = AskQuestion("DO YOU WANT TO PLAY AGAIN")
		if(($ans -eq "YES") -or ($ans -eq "Y")) { return $true }
		if(($ans -eq "NO") -or ($ans -eq "N")) { return $false }
		else
		{
			Write-Host "PLEASE ANSWER ""YES"" OR ""NO"""			 
		}		
	}
}
function AskToSeeTheRules()
{
	while($true)
	{
		$ans = AskQuestion("DO YOU WANT TO SEE THE RULES")
		if(($ans -eq "YES") -or ($ans -eq "Y")) { return $true }
		if(($ans -eq "NO") -or ($ans -eq "N")) { return $false }
		else
		{
			Write-Host "PLEASE ANSWER ""YES"" OR ""NO"""			 
		}		
	}
}
function DisplayCard($card)
{
	if($card -eq 11) { Write-Host "JACK" }
	elseif($card -eq 12) { Write-Host "QUEEN" }
	elseif($card -eq 13) { Write-Host "KING" }
	elseif($card -eq 14) { Write-Host "ACE" }
	else { Write-Host $card }
}
function DisplayRules()
{
	Write-Host "ACEY DUCEY IS PLAYED IN THE FOLLOWING MANNER:"
	Write-Host "THE DEALER (COMPUTER) DEALS TWO CARDS FACE UP"
	Write-Host "YOU HAVE THE OPTION TO BET OR NOT BET DEPENDING"
	Write-Host "ON WHETHER OR NOT YOU FEEL THE NEXT CARD WILL"
	Write-Host "HAVE A VALUE BETWEEN THE FIRST TWO."
	Write-Host ""
	Write-Host "IF YOU DO NOT WANT TO BET, INPUT A 0 (ZERO)."
}
function GenerateRandomNumber
{
	param (
	[int]$minimum,
	[int]$maximum,
	$show
	)
	$value = Get-Random -Minimum $minimum -Maximum $maximum
	if($show -eq $true)
	{
		Write-Host $value
	}
	return $value
}
function SelectCard()
{
	while($true)
	{
		[int]$card = GenerateRandomNumber -minimum 2 -maximum 15 -show $false
		if(($card -ne $Cards[0]) -and ($card -ne $Cards[1]) -and ($card -ne $Cards[2]))
		{
			DisplayCard($card)
			return $card
		}
	}
}
Write-Host "*** ACEY DUCEY : POWERSHELL ***"
$Running = $true
if(AskToSeeTheRules -eq $true) { DisplayRules }
while($Running -eq $true)
{
	$Wallet = 100
	$GameOver = $false
	while($GameOver -eq $false)
	{
		Write-Host "YOU NOW HAVE" $Wallet "DOLLARS."
		$Cards[0] = SelectCard
		$Cards[1] = SelectCard
		$bet = AskForBet
		if($bet -gt 0)
		{
			$Cards[2] = SelectCard
			if( (($Cards[2] -gt $Cards[0]) -and ($Cards[2] -lt $Cards[1])) -or (($Cards[2] -gt $Cards[1]) -and ($Cards[2] -lt $Cards[0])))
			{
				Write-Host "YOU WIN!!!"
				$Wallet = $Wallet + $bet
			}
			else
			{
				Write-Host "SORRY, YOU LOSE."
				$Wallet = $Wallet - $bet
			}
			if($Wallet -lt 1)
			{
				Write-Host "SORRY FRIEND, YOU ARE BROKE."
				$GameOver = $true
			}
		}
		else
		{
			$GameOver = $true
		}
	}
	Write-Host "*** GAME OVER ***"
	$Running = AskToPlayAgain
}
Write-Host "OK, HOPE YOU HAD FUN."
Write-Host "THANKS FOR PLAYING!"