<#PSScriptInfo
.VERSION 1.0
.GUID 3bb10ee7-38c1-41b9-88ea-16899164fc19
.AUTHOR Markus Fleschutz
.COPYRIGHT CC0
#>

<#
.SYNOPSIS
	Writes code
.DESCRIPTION
	This PowerShell script generates and writes PowerShell code on the console (for fun).
.PARAMETER color
	Specifies the color to use ("green" by default)
.PARAMETER speed
	Specifies the speed in milliseconds per code line (500 by default)
.EXAMPLE
	PS> ./write-code
.LINK
	https://github.com/fleschutz/PowerShell
#>

param([string]$color = "green", [int]$speed = 500) # milliseconds

function GetRandomCodeLine { 
	$Generator = New-Object System.Random
	$Num = [int]$Generator.next(0, 25)
	switch($Num) {
	 0 { return "    `$count = 0" }
	 1 { return "    `$count++" }
	 2 { return "    exit 0 # success" }
	 3 { return "    `$Files = Get-ChildItem C:" }
	 4 { return "    Start-Sleep -seconds 1" }
	 5 { return "    `$Generator = New-Object System-Random" }
	 6 { return "} else {" }
	 7 { return "} catch {" }
	 8 { return "} elseif (`$count -eq 0) {" }
	 9 { return "    Write-Host `"Hello World`" " }
	10 { return "    while (`$true) {" }
	11 { return "# next part:" }
	12 { return "    exit 1 # failed" }
	13 { return "    return 1" }
	14 { return "    return 0" }
	15 { return "    Write-Progress `"Working...`" " }
	16 { return "    [bool]`$KeepAlive = `$true" }
	17 { return "# Copyright © 2022 write-code.ps1. All Rights Reserved." }
	18 { return "    for ([int]`$i = 0; `$i -lt 100; `$i++) {" }
	19 { return "    `$StopWatch = [system.diagnostics.stopwatch]::startNew()" }
	20 { return "    [int]`$Elapsed = `$StopWatch.Elapsed.TotalSeconds" }
	21 { return "    if (`$count -eq 0) { `$count = Read-Host `"Enter number of iterations`" " }
	22 { return "    } finally {" }
	23 { return "    throw `"Can't open file`" " }
	24 { return "    Start-Sleep -milliseconds 50" }
	}
}

try {
	Write-Host -foreground $color "try {"
	while ($true) {
		Write-Host -foreground $color "$(GetRandomCodeLine)"
		Start-Sleep -milliseconds $speed
	}
	exit 0 # success
} catch {
	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}