functions/Start-PSCountdown.ps1
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Function Start-PSCountdown { [cmdletbinding(DefaultParameterSetName = "minutes")] [OutputType("None")] [Alias("spsc")] Param( [Parameter(Position = 0, HelpMessage = "Enter the number of minutes to countdown (1-60). The default is 5.", ParameterSetName = "minutes")] [ValidateRange(1, 60)] [int32]$Minutes = 5, [Parameter(Position = 0, ParameterSetname = "time", HelpMessage = "Enter a datetime value as the countdown target.")] [DateTime]$Time, [Parameter(HelpMessage = "Enter the text for the progress bar title.")] [ValidateNotNullOrEmpty()] [string]$Title = "Counting Down ", [Parameter(Position = 1, HelpMessage = "Enter a primary message to display in the parent window.")] [ValidateNotNullOrEmpty()] [string]$Message = "Starting soon.", [Parameter(HelpMessage = "Use this parameter to clear the screen prior to starting the countdown.")] [alias("cls")] [switch]$ClearHost, [ValidateSet("Default", "Random", "Transparent")] [alias("style")] [string]$ProgressStyle = "Default", [Parameter(HelpMessage = "The path to a text list of pseudo-tasks")] [ValidateNotNullOrEmpty()] [string]$Path = "$PSScriptRoot\PSCountdownTasks.txt" ) Begin { Write-Verbose "Starting $($MyInvocation.MyCommand)" $PSBoundParameters | Out-String | Write-Verbose if ($PSBoundParameters.ContainsKey('progressStyle')) { if ($PSBoundParameters.Item('ProgressStyle') -ne 'default') { if ($PSStyle) { $saved = $PSStyle.Progress.style } else { $saved = $host.privateData.ProgressBackgroundColor } } if ($PSBoundParameters.Item('ProgressStyle') -eq 'transparent' -AND ($PSedition -eq 'Desktop' -OR $PSStyle.Progress.view -eq 'classic')) { #This only works for Windows PowerShell $host.privateData.progressBackgroundColor = $host.UI.RawUI.BackgroundColor } } Write-Verbose "Using parameter set $($PSCmdlet.ParameterSetName)" if (Test-Path $Path) { #import entries from list without a # comment and trim each one Write-Verbose "Loading task messages from $path" $loading = Get-Content -Path $Path | Where-Object { $_ -match "\w+" -AND $_ -notmatch '#' } | ForEach-Object { $_.Trim() } } else { Write-Verbose "$Path not found. Using default values." $loading = "Warming up the room", "Charging batteries", "Formatting C:" } if ($ClearHost) { Clear-Host } $startTime = Get-Date if ($PSCmdlet.ParameterSetName -eq 'minutes') { Write-Verbose "Adding $minutes minutes to start time" $endTime = $startTime.AddMinutes($Minutes) } else { Write-Verbose "Using Time value" $endTime = $Time } $totalSeconds = (New-TimeSpan -Start $startTime -End $endTime).TotalSeconds $totalSecondsChild = Get-Random -Minimum 4 -Maximum 30 $startTimeChild = $startTime $endTimeChild = $startTimeChild.AddSeconds($totalSecondsChild) $loadingMessage = $loading[(Get-Random -Minimum 0 -Maximum ($loading.Length - 1))] #used when progress style is random if ($PSStyle.Progress.view -eq "Minimal") { $progColors = $PSStyle.Foreground.brightRed,$PSStyle.Foreground.BrightCyan,$PSStyle.Foreground.brightgreen, $PSStyle.Foreground.BrightMagenta } else { $progColors = "black", "darkgreen", "magenta", "blue", "darkgray","cyan","darkcyan" } } #begin Process { #this does not work in VS Code or the PowerShell ISE if ($host.name -match 'Visual Studio Code|ISE') { Write-Warning "This command will not work in the integrated PowerShell Console in VS Code or the PowerShell ISE." #bail out Return } Do { $now = Get-Date $secondsElapsed = (New-TimeSpan -Start $startTime -End $now).TotalSeconds $secondsRemaining = $totalSeconds - $secondsElapsed $percentDone = ($secondsElapsed / $totalSeconds) * 100 Write-Progress -Id 0 -Activity $Title -Status $Message -PercentComplete $percentDone -SecondsRemaining $secondsRemaining $secondsElapsedChild = (New-TimeSpan -Start $startTimeChild -End $now).TotalSeconds $secondsRemainingChild = $totalSecondsChild - $secondsElapsedChild $percentDoneChild = ($secondsElapsedChild / $totalSecondsChild) * 100 if ($percentDoneChild -le 100) { Write-Progress -Id 1 -ParentId 0 -Activity $loadingMessage -PercentComplete $percentDoneChild -SecondsRemaining $secondsRemainingChild } if ($percentDoneChild -ge 100 -and $percentDone -le 98) { if ($PSBoundParameters.ContainsKey('ProgressStyle') -AND $PSBoundParameters.Item('ProgressStyle') -eq 'random') { if ($PSStyle.Progress.View -eq 'Minimal') { $PSStyle.Progress.Style = ($progColors | Get-Random) } else { $host.privateData.progressBackgroundColor = ($progColors | Get-Random) } } $totalSecondsChild = Get-Random -Minimum 4 -Maximum 30 $startTimeChild = $now $endTimeChild = $startTimeChild.AddSeconds($totalSecondsChild) if ($endTimeChild -gt $endTime) { $endTimeChild = $endTime } $loadingMessage = $loading[(Get-Random -Minimum 0 -Maximum ($loading.Length - 1))] } Start-Sleep 0.2 } Until ($now -ge $endTime) } #progress End { if ($saved) { #restore value if it has been changed if ($PSStyle) { $PSStyle.progress.style = $Saved } else { $host.privateData.ProgressBackgroundColor = $saved } } } #end } |