#Requires -Version 5.1
<#
    JbTecWiz Support Centre -- generated fix script

    Fault : A scheduled task reports success but does nothing, or fails 0x1
    Fix   : Make the task actually start
    Source: https://jbtecwiz.com/support/srv-app-taskscheduler

    Run as     : Elevated PowerShell
    Expect     : 25 minutes
    Risk       : low
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    It never runs, or is refused.

    HOW TO UNDO IT
    Set-ScheduledTask with the previous settings object.

    This script walks the fix one step at a time and asks before each
    one. Steps with no command are things you do yourself -- it prints
    those and waits. Run with -DryRun to print without executing.

    --------------------------------------------------------------------
    NO WARRANTY - USE AT YOUR OWN RISK

    This script is provided by JbTecWiz as-is and with no warranty of any
    kind, express or implied. You run it entirely at your own risk.

    JbTecWiz accepts no liability for any loss or damage arising from its
    use, including but not limited to data loss, downtime, or configuration
    changes that turn out to be wrong for your system.

    You are responsible for reading this script before running it, for
    satisfying yourself that it suits the machine in front of you, and for
    having a working backup first. Some steps cannot be undone.
    --------------------------------------------------------------------
#>

[CmdletBinding()]
param(
    # Print every step and command without running anything.
    [switch]$DryRun,
    # Do not ask before each step. Read the script first if you use this.
    [switch]$Unattended
)

$ErrorActionPreference = 'Stop'
$script:Failed = 0

function Write-Rule { param([string]$Text)
    Write-Host ''
    Write-Host ('-' * 70) -ForegroundColor DarkGray
    if ($Text) { Write-Host $Text -ForegroundColor Cyan }
}

function Show-Prose { param([string]$Text, [string]$Colour = "Gray")
    if (-not $Text) { return }
    $words = $Text -split "\s+"; $line = "  "
    foreach ($w in $words) {
        if (($line.Length + $w.Length) -gt 74) { Write-Host $line -ForegroundColor $Colour; $line = "  " }
        $line += "$w "
    }
    if ($line.Trim()) { Write-Host $line -ForegroundColor $Colour }
}

function Invoke-Step {
    param(
        [int]$Number, [string]$Do, [string]$Why,
        [scriptblock]$Command, [switch]$Manual, [string]$Shell = "powershell"
    )
    Write-Rule "  Step $Number of 5"
    Show-Prose $Do "White"
    if ($Why) { Write-Host ""; Show-Prose $Why "DarkGray" }

    if ($Manual) {
        Write-Host ''
        Write-Host '  -> Do this yourself, then press Enter to carry on.' -ForegroundColor Yellow
        if (-not $Unattended -and -not $DryRun) { [void](Read-Host) }
        return
    }

    Write-Host ''
    foreach ($l in ($Command.ToString().Trim() -split "`n")) {
        Write-Host ("    " + $l.Trim()) -ForegroundColor Green
    }
    Write-Host ''

    if ($DryRun) { Write-Host "  (dry run -- not executed)" -ForegroundColor DarkGray; return }
    if (-not $Unattended) {
        $a = Read-Host "  Run this step? [Y]es / [S]kip / [Q]uit"
        if ($a -match "^[Qq]") { Write-Host "  Stopped at your request."; exit 0 }
        if ($a -match "^[Ss]") { Write-Host "  Skipped." -ForegroundColor DarkGray; return }
    }
    try { & $Command }
    catch {
        $script:Failed++
        Write-Host ("  Step $Number failed: " + $_.Exception.Message) -ForegroundColor Red
        Show-Prose "The rest of the fix may depend on this. Read the write-up before carrying on." "Red"
        if (-not $Unattended) {
            $c = Read-Host "  Carry on anyway? [y/N]"
            if ($c -notmatch "^[Yy]") { exit 1 }
        }
    }
}

Write-Rule
Write-Host '  A scheduled task reports success but does nothing, or fails 0x1' -ForegroundColor White
Write-Host '  Make the task actually start' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: low   Reversible   25 minutes'
Write-Host ''
Show-Prose 'No warranty. Use at your own risk - JbTecWiz accepts no liability. Read it before you run it, and have a backup.' 'DarkYellow'
Write-Rule

if (-not $Unattended -and -not $DryRun) {
    $go = Read-Host '  Ready? [y/N]'
    if ($go -notmatch "^[Yy]") { Write-Host "  Nothing was changed."; exit 0 }
}

Invoke-Step -Number 1 -Do 'Check the trigger and the conditions.' -Command {
    Get-ScheduledTask -TaskName 'Nightly Export' | Select-Object -ExpandProperty Triggers
    Get-ScheduledTask -TaskName 'Nightly Export' | Select-Object -ExpandProperty Settings | Format-List DisallowStartIfOnBatteries,StopIfGoingOnBatteries,RunOnlyIfNetworkAvailable,RunOnlyIfIdle,WakeToRun
}

Invoke-Step -Number 2 -Do '0x800710E0 is the operator refusal, and on a laptop it is almost always the battery condition.' -Why 'The default settings refuse to start on battery and stop the task if the machine unplugs. On a laptop or a virtual machine that reports a battery, that means it never runs and the message gives no hint why.' -Command {
    $s = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -StartWhenAvailable
    Set-ScheduledTask -TaskName 'Nightly Export' -Settings $s
}

Invoke-Step -Number 3 -Do 'Set Run whether the user is logged on or not, so it runs without a session.' -Command {
    $p = New-ScheduledTaskPrincipal -UserId 'EXAMPLE\svc_task' -LogonType Password -RunLevel Highest
    Set-ScheduledTask -TaskName 'Nightly Export' -Principal $p -User 'EXAMPLE\svc_task' -Password (Read-Host -AsSecureString | ConvertFrom-SecureString -AsPlainText)
}

Invoke-Step -Number 4 -Do 'Enable Start when available, so a task missed while the machine was off runs at the next opportunity.' -Manual

Invoke-Step -Number 5 -Do 'Check the task is enabled and the trigger date has not passed.' -Command {
    Get-ScheduledTask -TaskName 'Nightly Export' | Format-List TaskName,State
    Get-ScheduledTaskInfo -TaskName 'Nightly Export' | Format-List NextRunTime,LastRunTime,NumberOfMissedRuns
}

Write-Rule "  Confirm it worked"
Show-Prose 'NextRunTime is populated and the task runs at the scheduled time.' 'White'
Write-Host ''
if (-not $DryRun) {
    Get-ScheduledTaskInfo -TaskName 'Nightly Export' | Format-List LastRunTime,LastTaskResult,NextRunTime,NumberOfMissedRuns
}

Write-Rule
if ($script:Failed -gt 0) {
    Write-Host ("  Finished with " + $script:Failed + " failed step(s).") -ForegroundColor Yellow
    Show-Prose 'Read the full write-up at https://jbtecwiz.com/support/srv-app-taskscheduler' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Set-ScheduledTask with the previous settings object.' 'DarkGray'
Write-Rule