Is it possible to enhance the code with the following example?

`# .SYNOPSIS

Good Times!

.DESCRIPTION

Dieses Skript zeigt die Uptime-Zeiten der vergangenen Tage an, und berechnet

daraus die in der Zeitmanagement zu buchenden Zeiten, sowie Gleitzeit-Differenzen.

.NOTES

Copyright 2015 Thomas Rosenau

Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

.PARAMETER historyLength

Anzahl der angezeigten Tage in der Vergangenheit.

Standardwert: 30

Alias: -l

.PARAMETER workingHours

Anzahl der zu arbeitenden Stunden pro Tag.

Standardwert: 8

Alias: -h

.PARAMETER lunchBreak

Länge der Mittagspause in Stunden pro Tag.

Standardwert: 1

Alias: -b

.PARAMETER precision

Rundungspräzision in %, d.h. 1 = Rundung auf volle Stunde, 4 = Rundung auf 60/4=15 Minuten, …, 100 = keine Rundung

Standardwert: 4

Alias: -p

.PARAMETER dateFormat

Datumsformat gemäß https://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx?cs-lang=vb#content

Standardwert: ddd dd/MM/yyyy

Alias: -d

.PARAMETER joinIntervals

Ignoriert die Pausen zwischen den Intervallen und rechnet nur das erste Intervall und das letzte Intervall zusammen. (0 = ausgeschaltet, 1 = eingeschaltet)

Standardwert: 1

Alias: -j

.PARAMETER maxWorkingHours

Anzahl der maximal erlaubten Stunden pro Tag die gearbeitet werden darf.

Standardwert: 10

Alias: -m

.INPUTS

Keine

.OUTPUTS

Keine

.EXAMPLE

.\goodTimes.ps1

(Aufruf mit Standardwerten)

.EXAMPLE

.\goodTimes.ps1 -historyLength 30 -workingHours 8 -lunchBreak 1 -precision 4 -joinIntervals 1 -maxWorkingHours 10

(Aufruf mit explizit gesetzten Standardwerten)

(30 Tage anzeigen, Arbeitszeit 8 Stunden täglich, 1 Stunde Mittagspause, Rundung auf 15 (=60/4) Minuten, Intervalle zusammen rechnen, 10h maximale Arbeitszeit)

.EXAMPLE

.\goodTimes.ps1 30 -h 8 -b 1 -p 4

(Aufruf mit explizit gesetzten Standardwerten, Kurzschreibweise)

.EXAMPLE

.\goodTimes.ps1 14 -h 7 -b .5 -p 6

(14 Tage anzeigen, Arbeitszeit 7 Stunden täglich, 30 Minuten Mittagspause, Rundung auf 10 (=60/6) Minuten)

param (
[int]
[parameter(Position=0)]
[alias('l')]
$historyLength = 30,
[byte]
[validateRange(0, 24)]
[alias('h')]
$workinghours = 40 / 5,
[decimal]
[validateRange(0, 24)]
[alias('b')]
$lunchbreak = 1,
[byte]
[validateRange(1, 100)]
[alias('p')]
$precision = 4,
[string]

[ValidateScript({$_ -cmatch '\bd\b' -or ($_ -cmatch '\bdd\b' -and $_ -cmatch '\bM{1,4}\b')})]

[ValidateScript({$_ -cnotmatch '[HhmsfFt]'})]
[alias('d')]
    $dateFormat = 'ddd dd/MM/yyyy', # "/" ist Platzhalter für lokalisierten Trenner
[byte]
[validateRange(0, 1)]
[alias('j')]
    $joinIntervals = 1,
[byte]
[validateRange(0, 255)]
[alias('m')]
    $maxWorkingHours = 10

)

helper functions to calculate the required attributes

total uptime

function getUptimeAttr($entry) {
$result = New-TimeSpan

if ($joinIntervals -eq 0) {
	foreach ($interval in $entry) {
	    $result = $result.add($interval[1] - $interval[0])
	}
} else {
	$result = $entry[-1][-1] - $entry[0][0]
}	

$result

}

uptime intervals

function getIntervalAttr($entry) {
$result = @()

if ($joinIntervals -eq 0) {
	foreach ($interval in $entry) {
		$result += '{0:HH:mm}-{1:HH:mm}' -f $interval[0], $interval[1]
	}
} else {
	$result = '{0:HH:mm}-{1:HH:mm}' -f $entry[0][0], $entry[-1][-1]
}

$result -join ', '

}

booking hours

function getBookingHoursAttr($interval) {
$netTime = $interval.totalHours - $lunchbreak
[math]::Round($netTime * $precision) / $precision
}

flex time delta

function getFlexTimeAttr($bookedHours) {
$delta = $bookedHours - $workinghours
$result = $delta.toString('+0.00;-0.00; 0.00')
if ($delta -eq 0) {
write $result, $null
} elseif ($delta -gt 0) {
write $result, 'darkgreen'
} else {
write $result, 'darkred'
}
}

end helper functions

generate a hashmap of the abovementioned attributes

function getLogAttrs($entry) {
$result = @{
uptime = getUptimeAttr $entry
intervals = getIntervalAttr $entry
}
$result.bookingHours = getBookingHoursAttr $result.uptime
$result.flexTime = getFlexTimeAttr $result.bookingHours
$result
}

convenience function to write to screen with or without color

function print($string, $color) {
if ($color) {
write-host -f $color -n $string
} else {
write-host -n $string
}
}

convenience function to write to screen with or without color

function println($string, $color) {
print ($string + "rn") $color
}

If running in the console, wait for input before continuing.

function wait() {
if ($Host.Name -eq 'ConsoleHost') {
Write-Host 'Press any key to continue...'
$Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyUp') > $null
}
}

helper to determine whether a given EventLogRecord is a boot or wakeup event

function isStartEvent($event) {
return ($event.ProviderName -eq 'Microsoft-Windows-Kernel-General' -and $event.ID -eq 12) -or
($event.ProviderName -eq 'Microsoft-Windows-Power-Troubleshooter' -and $event.ID -eq 1)
}

helper to determine whether a given EventLogRecord is a shutdown or suspend event

function isStopEvent($event) {
return ($event.ProviderName -eq 'Microsoft-Windows-Kernel-General' -and $event.ID -eq 13) -or
($event.ProviderName -eq 'Microsoft-Windows-Kernel-Power' -and $event.ID -eq 42)
}

create an array of filterHashTables that filter boot and shutdown events from the desired period

$startTime = (get-date).addDays(-$historyLength)
$filters = (
@{
StartTime = $startTime
LogName = 'System'
ProviderName = 'Microsoft-Windows-Kernel-General'
ID = 12, 13
},
@{
StartTime = $startTime
LogName = 'System'
ProviderName = 'Microsoft-Windows-Kernel-Power'
ID = 42 # what else?
},
@{
StartTime = $startTime
LogName = 'System'
ProviderName = 'Microsoft-Windows-Power-Troubleshooter'
ID = 1
}
)

get system log entries for boot/shutdown

$events = Get-WinEvent -FilterHashtable $filters | select ID, TimeCreated, ProviderName

sort (reverse chronological order) and convert to ArrayList

[Collections.ArrayList]$events = $events | sort TimeCreated

create an empty list, which will hold one entry per day

$log = New-Object Collections.ArrayList

fill the $log list by searching for start/stop pairs

:outer while ($events.count -ge 2) {
if ($log) {
# find the latest stop event
do {
if ($events.count -lt 2) {
# if there is only one stop event left, there can't be any more start event (e.g. when system log was cleared)
break outer
}
$end = $events[$events.count - 1]
$events.remove($end)
} while (-not (isStopEvent $end)) # consecutive start events. This may happen when the system crashes (power failure, etc.)
} else {
# add a fake shutdown event for this very moment
$end = @{TimeCreated = get-date}
}

# find the corresponding start event
do {
    if ($events.count -lt 1) {
        # no more events left
        break outer
    }
    $start = $events[$events.count - 1]
    $events.remove($start)
} while (-not (isStartEvent $start)) # not sure if there can indeed be consecutive stop events, but let's better be safe than sorry

# check if the current start/stop pair has occurred on the same day as the previous one
$last = $log[0]
$interval = ,($start.TimeCreated, $end.TimeCreated)
if ($last -and $start.TimeCreated.Date.equals($last[0][0].Date)) {
    # combine uptimes
    $log[0] = $interval + $last
} else {
    # create new day
    $log.insert(0, $interval)
}

}

colors

$oldFgColor= $host.UI.RawUI.ForegroundColor
$host.UI.RawUI.ForegroundColor = 'gray'
$oldBgColor = $host.UI.RawUI.BackgroundColor
$host.UI.RawUI.BackgroundColor = 'black'

write the output

$screenWidth = $host.UI.RawUI.BufferSize.width

Write-Host ("{0,-$($screenWidth - 1)}" -f ' Datum Buchen Gleitzeit Uptime (incl. Pause)')
Write-Host ("{0,-$($screenWidth - 1)}" -f '------------- ------ --------- --------------------')

foreach ($entry in $log) {
$firstStart = $entry[0][0]
$dayOfWeek = ([int]$firstStart.dayOfWeek + 6) % 7
if ($dayOfWeek -lt $lastDayOfWeek) {
println ("{0,-$($screenWidth - 1)}" -f '-------------')
}
$dayFormatted = $firstStart.Date.toString($dateFormat)
if ($dayOfWeek -ge 5) {
Write-Host $dayFormatted -n -backgroundColor darkred -foregroundcolor gray
} else {
print $dayFormatted
}
$lastDayOfWeek = $dayOfWeek
$attrs = getLogAttrs($entry)
if ($attrs.bookingHours -gt $maxWorkingHours) {
print (' {0,5} ' -f
$attrs.bookingHours.toString('#0.00', [Globalization.CultureInfo]::getCultureInfo('de-DE'))
) red
} else {
print (' {0,5} ' -f
$attrs.bookingHours.toString('#0.00', [Globalization.CultureInfo]::getCultureInfo('de-DE'))
) cyan
}
print $attrs.flexTime[0] $attrs.flexTime[1]
print ("{0,6:#0}:{1:00} | {2,-$($screenWidth - 42)}" -f
$attrs.uptime.hours,
[Math]::Round($attrs.uptime.minutes + $attrs.uptime.seconds / 60),
$attrs.intervals) darkGray
Write-Host
}

restore previous colors

$host.UI.RawUI.BackgroundColor = $oldBgColor
$host.UI.RawUI.ForegroundColor = $oldFgColor

wait`

sleep event: Kernel-Power #42
wakeup event: Power-Troubleshooter #1