A simple number guessing game in PowerShell

number-guessing-game.ps1

enum Difficulty {
    EASY
    MEDIUM
    HARD
}

Function GetMaxNumberByDifficulty {
    [CMDLetBinding()]
    Param(
        [Difficulty]$Difficulty
    );

    Switch($Difficulty) {
        EASY {
            Return 50;
        };
        MEDIUM {
            Return 100;
        };
        HARD {
            Return 200;
        };
        Default {
            Throw "Invalid difficulty.";
        };
    };
};

Function GetRandomNumberByDifficulty {
    [CMDLetBinding()]
    Param(
        [Difficulty]$Difficulty
    );

    $MaxNum = GetMaxNumberByDifficulty -Difficulty $Difficulty;
    $Random = Get-Random -Minimum 1 -Maximum $MaxNum;

    Return $Random;
};

$Guesses = 0;
$Guessed = $False;

[Difficulty]$Difficulty = Read-Host "Choose a difficulty (EASY, MEDIUM, HARD)";

Try {
    $RandomNumber = GetRandomNumberByDifficulty -Difficulty $Difficulty;
} Catch {
    Write-Host "Invalid difficulty.";

    Exit;
};

$Max = GetMaxNumberByDifficulty -Difficulty $Difficulty;

While ($Guessed -Eq $False) {
    $Guess = Read-Host "Guess a number between 1 and $($Max)";
    $Guesses++;

    Write-Host "You guessed ($Guess)";

    If ($Guess -Eq $RandomNumber) {
        $Guessed = $True;
    } ElseIf ($Guess -Lt $RandomNumber) {
        Write-Host "Your guess is too low.";
    } ElseIf ($Guess -Gt $RandomNumber) {
        Write-Host "Your guess is too high.";
    };
};

Write-Host "You guessed the number ($RandomNumber) in ($Guesses) guesses.";