param(
    [switch]$debug,
    [switch]$clear
)

if ($debug) {
    $script:debug = $debug
}



$teamsName = "IT Support & Delivery" 
$scheduleGroupName = "IT SUPPORT"

# App Registration details & Tenant ID
$ClientId = "6cb76bbf-f253-4551-87a8-5e1f49d8ace3"
$ClientSecret = "IQg8Q~JTBTDbrHyjKMc.KMSETtQoKWvUhnCr1aY1" 
$tenantid = "e81b4a31-e8ad-4df6-aa30-3bdcc1da2cdd" 
$userIdAdmin = "747bd624-5cd7-4ae0-952f-5dc374e07a5e"
$logPath = (".\log_{0}.log" -f (Get-Date).toString("yyyy_MM_dd"))

function Write-Debug {
    param(
        [string]$message
    )
    if ($script:debug) {
        Write-Host $message
    }
    else {
        $message | Add-Content ./log.txt
    }
}

#Naplánování konkrétní směny
function Set-Shift {
    param(
        [string]$userId,
        [string]$groupID,
        [string]$shiftName,
        [System.DateTime]$StartDate,
        [System.DateTime]$EndDate,
        [string]$color,
        [string]$teamID
    )

    $params = @{
        UserId            = $userId
        schedulingGroupId = $groupID
        sharedShift       = @{
            notes         = ($shiftName)
            startDateTime = [System.DateTime]::Parse($StartDate.ToString("yyyy-MM-dd'T'HH:mm:ssZ"))
            endDateTime   = [System.DateTime]::Parse($EndDate.ToString("yyyy-MM-dd'T'HH:mm:ssZ"))
            theme         = $color
        }
    }

    #$headers = @{
    #    "MS-APP-ACTS-AS" = $userIdAdmin
    #    "Prefer"          = "no-notification"
    #}

    $newShift = New-MgTeamScheduleShift -TeamId $teamID -DraftShift -BodyParameter $params -Headers @{ "MS-APP-ACTS-AS" = $userIdAdmin }
    Write-Debug ("SCHEDULING: {0} {1} - {2}" -f $newShift.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm"), $newShift.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm"), $newShift.SharedShift.Notes) 
    #("SCHEDULING: {0} {1} - {2}" -f $newShift.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm"), $newShift.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm"), $newShift.SharedShift.Notes)  | Add-Content -Path $logPath
    return $newShift
}

#Kontrola, zda má uvedené ID nějakou ze směn v množině
function Invoke-HasShift {
    param(
        [string]$userID,
        [PSCUstomObject]$TestedShifts
    )

    foreach ($shift in $TestedShifts) {
        if ($shift.UserId -eq $userID) {
            return $true
            break
        }
    }
    return $false
}

function Invoke-HasTimeOff {
    param(
        [string]$userID,
        [PSCustomObject]$TestedTimeOff
    )

    foreach ($time_off in $TestedTimeOff) {
        if ($time_off.UserId -eq $userID) {
            return $true
            break
        }
    }
    return $false
}

function Invoke-CanHaveOnSite {

}


function Invoke-CanHaveDayShift {

}

function Invoke-CanHaveNoShift {

}

function Invoke-CanHaveHomeOffice {

}

function Invoke-CanHaveOffice {

}

#Microsoft auth

$body = @{
    grant_type    = "client_credentials"
    resource      = "https://graph.microsoft.com"
    client_id     = $ClientId
    client_secret = $ClientSecret
}
$authUri = "https://login.microsoftonline.com/$tenantid/oauth2/token"
$response = Invoke-RestMethod $authUri -Method 'POST' -Body $body

$token = $response.access_token

Import-Module Microsoft.Graph.Teams
Connect-MgGraph -AccessToken $($token | ConvertTo-SecureString -AsPlainText -Force) >> $null

# Dnešní datum a plán směn

#$today = (Get-Date).Date
#$today = $today_old.AddYears(2)
$today = Get-Date -Day 18 -Month 1 -Year 2027 -Hour 9 -Minute 00 -Second 00 -Millisecond 00

$schedule = Get-Content -Path "./config.json" -Raw | ConvertFrom-Json

$allemails = $schedule.PSObject.Properties | ForEach-Object {
    if ($_.Name -in @("monday", "tuesday", "wednesday", "thursday", "friday")) {
        $_.Value.PSObject.Properties | ForEach-Object {
            if ($_.Name -in @("ds", "ho", "os", "ns")) {
                $_.Value | ForEach-Object {
                    $_
                }
            }
        }
    }
} | Select-Object -Unique

#Časové rozmezí plánování

$Monday = $today.AddDays(1 - $today.DayOfWeek.value__)
$Friday = $Monday.AddDays(4)
$daysahead = 5

$startSpanDate = Get-Date -Day $today.Day -Month $today.Month -Year $today.Year -Hour 9 -Minute 00 -Second 00 -Millisecond 00
$endSpanDate = Get-Date -Day $startSpanDate.AddDays($daysahead).Day -Month $startSpanDate.AddDays($daysahead).Month -Year $startSpanDate.AddDays($daysahead).Year -Hour 17 -Minute 00 -Second 00 -Millisecond 00

#RLCZ maintenance
$rlcz_mtnc_email = "jiri.kotlan@itego.cz"
$rlcz_mtnc_userId = $(Get-MgUser -Filter "UserPrincipalName eq '$rlcz_mtnc_email' or proxyAddresses/any(c:c eq 'smtp:$rlcz_mtnc_email')").Id
$rlcz_shift_reduction = -3

Write-Host $startSpanDate
Write-Host $endSpanDate

# SKRIPT
try {
    $team = Get-MgTeam -Property "id,displayName" | Where-Object -property displayName -value $teamsName -eq
    $group = Get-MgTeamScheduleSchedulingGroup -TeamId  $team.id -Headers @{ "MS-APP-ACTS-AS" = $userIdAdmin } |  Where-Object -property displayName -value $scheduleGroupName -eq
    
    $allshifts = [object[]] (Get-MgTeamScheduleShift -TeamId $team.id -Filter "SharedShift/StartDateTime ge $($startSpanDate.toString('yyyy-MM-ddT00:00:00Z'))" -All  -Headers @{ "MS-APP-ACTS-AS" = $userIdAdmin })
    $timeoff = [object[]] (Get-MgTeamScheduleTimeOff -TeamId $team.id -Filter "SharedTimeOff/StartDateTime ge $($startSpanDate.toString('yyyy-MM-ddT00:00:00Z'))" -All  -Headers @{ "MS-APP-ACTS-AS" = $userIdAdmin } | Select-Object -Property *,@{name="Date";expression={$_.SharedTimeOff.StartDateTime.AddHours(1).Date}})
    
    $timeoff_now = $timeoff | Where-Object -Property Date -eq -Value $(Get-Date -Day 20 -Month 1 -Year 2027).Date

    return $timeoff_now

    #if ($clear) {
    #    foreach ($shift in $allshifts) {
    #        Remove-MgTeamSchedu#leShift -TeamId $team.id -ShiftId $shift.id
    #    }
#
#        return
#    }


    #Procházíme dny v časovém rozmezí
    $timeSpan = New-TimeSpan -Start $startSpanDate -End $endSpanDate
    Write-Debug ("Setting schedule from {0} to {1}" -f $startSpanDate, $endSpanDate)
    for ($dayNumber = 0; $dayNumber -lt $timespan.Days; $dayNumber++) {
        $dayDate = $today.AddDays($dayNumber);

        #Pokud jde o pracovní den, jinak se jde ihned na další den
        if ($dayDate.DayOfWeek -notin @("Saturday", "Sunday")) {
            #Inicializace dne
            $ds_shift_inplace = $false
            $ds_skipped = $false
        
            #Množina emailů pro tento den v týdnu co mají mít home office
            $ho_emails = $schedule.($dayDate.DayOfWeek.ToString().ToLower()).'ho'

            #Email a ID toho kdo má mít tento den denní směnu
            $ds_email = $schedule.($dayDate.DayOfWeek.ToString().ToLower()).'ds'
            $ds_userId = $(Get-MgUser -Filter "UserPrincipalName eq '$ds_email' or proxyAddresses/any(c:c eq 'smtp:$ds_email')").Id

            #Emaily těch co jsou on-site u zákazníka
            $os_emails = $schedule.($dayDate.DayOfWeek.ToString().ToLower()).'os'

            #Emaily těch co nemají mít dnes žádnou směnu
            $ns_emails = $schedule.($dayDate.DayOfWeek.ToString().ToLower()).'ns'

            #Upravení času
            if (($dayDate.IsDaylightSavingTime()) -eq $false) {
                $dateStart = $(get-date -Day $dayDate.Day -Month $dayDate.Month -Year $dayDate.Year -Hour 9 -Minute 00 -Second 00).AddHours(-1)
                $dateEnd = $(get-date -Day $dayDate.Day -Month $dayDate.Month -Year $dayDate.Year -Hour 17 -Minute 00 -Second 00).AddHours(-1)
            }
            else {
                $dateStart = $(get-date -Day $dayDate.Day -Month $dayDate.Month -Year $dayDate.Year -Hour 9 -Minute 00 -Second 00).AddHours(-2)
                $dateEnd = $(get-date -Day $dayDate.Day -Month $dayDate.Month -Year $dayDate.Year -Hour 17 -Minute 00 -Second 00).AddHours(-2)
            }

            foreach($email in $allemails) {
                $userId = $(Get-MgUser -Filter "UserPrincipalName eq '$email' or proxyAddresses/any(c:c eq 'smtp:$email')").Id
                
                if($email -eq $ds_email) {
                    if(((Invoke-HasShift -userID $userId -TestedShifts $shifts_today) -eq $false) -and ((Invoke-HasTimeOff -userID $userId -TestedTimeOff $timeoff_today) -eq $false)) {
                        if ($email -in $ho_emails) {
                            $newshift = Set-Shift -userId $userId -groupID $group.id -shiftName "Home Office - Denní směna" -StartDate $dateStart -EndDate $dateEnd -color "purple" -teamID $team.id
                            $allshifts += [Object[]] $newshift
                            continue
                        }
                        else {
                            $newshift = Set-Shift -userId $userId -groupID $group.id -shiftName "Office - Denní směna" -StartDate $dateStart -EndDate $dateEnd -color "purple" -teamID $team.id
                            $allshifts += [Object[]] $newShift
                            continue
                        }
                    }
                }

                if($email -in $os_emails) {
                    if(((Invoke-HasShift -userID $userId -TestedShifts $shifts_today) -eq $false) -and ((Invoke-HasTimeOff -userID $userId -TestedTimeOff $timeoff_today) -eq $false)) {
                        $newshift = Set-Shift -userId $userId -groupID $group.id -shiftName "On-site" -StartDate $dateStart -EndDate $dateEnd -color "gray" -teamID $team.id
                        $allshifts += [Object[]] $newshift
                        continue
                    }
                }

            }

            #Všechny směny které jsou v rozmezí 9:00-17:00 hodin tento den
            $shifts_today = [Object[]] $allshifts | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $dateStart.ToString("yyyy-MM-dd HH:mm") -and $_.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $dateEnd.ToString("yyyy-MM-dd HH:mm") }
            $timeoff_today = [Object[]] $timeoff | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedTimeOff.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $dateStart.ToString("yyyy-MM-dd HH:mm") -and $_.SharedTimeOff.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $dateEnd.ToString("yyyy-MM-dd HH:mm") }

            #Pokus o naplnění množiny manuálně daných denních směn pro tento den
            $manual_dayshifts = [Object[]] $shifts_today | Where-Object -Filter { { $_.SharedShift.Notes -eq "Home Office - Denní směna" -or $_.SharedShift.Notes -eq "Office - Denní směna" } }

            #Pokud je tato množina prázdná, tak dnes nebyla manuálně nastavena denní směna
            if ($null -eq $manual_dayshifts) {
                $ds_shift_inplace = $false
                Write-Debug ("{0}: Day-shift not yet set" -f $dayDate)
            }
            else {
                $ds_shift_inplace = $true
                Write-Debug ("{0}: Day-shift is already set" -f $dayDate)
            }

            #Pokud nebyla nikomu manuálně nastavena denní směna
            if ($ds_shift_inplace -eq $false) {

                #Má ten kdo má mít denní směnu ve stejný den už nějakou směnu?
                if (((Invoke-HasShift -userID $ds_userId -TestedShifts $shifts_today) -eq $true) -or ((Invoke-HasTimeOff -userID $ds_userId -TestedTimeOff $timeoff_today) -eq $true)) {

                    #Pokud ano, je to směna co má mít? Teoreticky by nemělo nastat, mělo by již být odchyceno v kontrole manuálních směn
                    if (Invoke-HasShift -userID $ds_userId -TestedShifts ($shifts_today | Where-Object -Filter { $_.SharedShift.Notes -eq "Home Office - Denní směna" -or $_.SharedShift.Notes -eq "Office - Denní směna" }) -eq $true) {
                        $ds_shift_inplace = $true
                        Write-Debug("{0}: {1} already has the day-shift" -f $dayDate, $ds_email)
                    }
                    #Není to denní směna, je manuálně daná jiného typu (může být i volno), bude potřeba najít náhradníka
                    else {
                        $ds_skipped = $true
                        $ds_shift_inplace = $false
                        Write-Debug("{0}: {1} can't have the day-shift" -f $dayDate, $ds_email)
                    }
                }
                #Ten co má mít denní směnu nemá ve stejný čas ještě žádnou směnu
                else {
                    Write-Debug("{0}: {1} can have the day-shift" -f $dayDate, $ds_email)
                    $ds_shift_inplace = $false
                    $ds_skipped = $false
                }
            }


            #Pokud bylo zjištěno, že má denní směna naplánovanou jinou směnu (ne-denní, nebo volno...) a je potřeba najít náhradníka
            if ($ds_skipped -eq $true) {
                #Budeme hledat ve zbývajících dnech zvoleného rozsahu
                $remainingdays = $timespan.Days - $dayNumber
                Write-Debug("{0}: looking for the next in line to have the day-shift" -f $dayDate)
                for ($daysahead = 1; $daysahead -lt $remainingdays; $daysahead++) {
                    $futureday = $dayDate.AddDays($daysahead)
                    Write-Debug("Checking {0} - {1}" -f $futureday, $futureday.DayOfWeek)
                    #Pokud jsme narazili na pracovní den...
                    if ($futureday.DayOfWeek -notin @("Saturday", "Sunday")) {
                        #...jdeme se podívat kdo má mít denní směnu
                        $futureds_email = $schedule.($futureday.DayOfWeek.ToString().ToLower()).'ds'
                        $futureds_id = $(Get-MgUser -Filter "UserPrincipalName eq '$futureds_email' or proxyAddresses/any(c:c eq 'smtp:$futureds_email')").Id
                        Write-Debug("{0} is next in line for the day-shift" -f $futureds_email)

                        #Má další na řadě nastavenou na dnešek směnu? Pokud ne tak má denní a hledání ukončujeme, jinak se jde na další den
                        if (((Invoke-HasShift -userID $futureds_id -TestedShifts $shifts_today) -eq $false) -and ((Invoke-HasTimeOff -userID $futureds_id -TestedTimeOff $timeoff_today) -eq $false)) {
                            Write-Debug("{0} can have the day-shift" -f $futureds_email)
                            $ds_email = $futureds_email
                            $ds_userId = $futureds_id
                            break
                        }
                        else {
                            Write-Debug("{0} can't have the day-shift" -f $futureds_email)
                        }
                    }
                }
            }

            #Pokud nebyla manuálně nastavena denní směna
            if ($ds_shift_inplace -eq $false) {
                #Pokud je emailová adresa toho kdo má denní směnu zároveň i v množině emailů co má home office tak je to home office denní směna
                if ($ds_email -in $ho_emails) {
                    Write-Debug("{0}: {1} has the day-shift and home-office" -f $dayDate, $ds_email)
                    $newshift = Set-Shift -userId $ds_userId -groupID $group.id -shiftName "Home Office - Denní směna" -StartDate $dateStart -EndDate $dateEnd -color "purple" -teamID $team.id
                    $allshifts += [Object[]] $newshift
                }
                #Jinak je to denní směna v kanceláři
                else {
                    Write-Debug("{0}: {1} has the day-shift" -f $dayDate, $ds_email)
                    $newshift = Set-Shift -userId $ds_userId -groupID $group.id -shiftName "Office - Denní směna" -StartDate $dateStart -EndDate $dateEnd -color "purple" -teamID $team.id
                    $allshifts += [Object[]] $newShift
                }
            }

            $shifts_today = [Object[]] $allshifts | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $dateStart.ToString("yyyy-MM-dd HH:mm") -and $_.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $dateEnd.ToString("yyyy-MM-dd HH:mm") }

            #Pokud je čtvrtek, zjištujeme zda zkrátit směnu kvůli včerejší RLCZ maintenanci
            if ($dayDate.DayOfWeek -eq "Thursday") {
                Write-Debug("{0}: It's thursday, checking if there was a RLCZ maintenance yesterday" -f $dayDate)
                #Včerejší datum
                $yesterday = $dayDate.AddDays(-1)

                #Úprava času
                if (($yesterday.IsDaylightSavingTime()) -eq $false) {
                    $rlcz_shift_start = $(get-date -Day $yesterday.Day -Month $yesterday.Month -Year $yesterday.Year -Hour 18 -Minute 00 -Second 00).AddHours(-1)
                    $rlcz_shift_end = $(get-date -Day $yesterday.Day -Month $yesterday.Month -Year $yesterday.Year -Hour 23 -Minute 00 -Second 00).AddHours(-1)
                }
                else {
                    $rlcz_shift_start = $(get-date -Day $yesterday.Day -Month $yesterday.Month -Year $yesterday.Year -Hour 18 -Minute 00 -Second 00).AddHours(-2)
                    $rlcz_shift_end = $(get-date -Day $yesterday.Day -Month $yesterday.Month -Year $yesterday.Year -Hour 23 -Minute 00 -Second 00).AddHours(-2)
                }

                #Včerejší RLCZ maintenance šichty
                $rlcz_shifts = [Object[]] $allshifts | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedShift.Notes -eq "RLCZ" -and $_.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $rlcz_shift_start.ToString("yyyy-MM-dd HH:mm") -and $_.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $rlcz_shift_end.ToString("yyyy-MM-dd HH:mm") }
                
                #Pokud byla včera RLCZ maintenance
                if ((Invoke-HasShift -userID $rlcz_mtnc_userId -TestedShifts $rlcz_shifts) -eq $true) {
                    Write-Debug("{0}: RLCZ maintenance was yesterday, checking if {1} has any shifts set today" -f $dayDate, $rlcz_mtnc_email)
                    #Pokud nemá na dnes ještě naplánovanou směnu
                    if (((Invoke-HasShift -userID $rlcz_mtnc_userId -TestedShifts $shifts_today) -eq $false) -and (Invoke-HasTimeOff -userID $rlcz_mtnc_userId -TestedTimeOff $timeoff_today) -eq $false) {
                        Write-Debug("{0}: {1} doesn't have any shifts planned today" -f $dayDate, $rlcz_mtnc_email)
                        #Pokud má mít dnes home office
                        if ($rlcz_mtnc_email -in $ho_emails) {
                            Write-Debug("{0}: {1} is supposed to have home-office today" -f $dayDate, $rlcz_mtnc_email)
                            #Dostane zkrácenou home office směnu
                            $newshift = Set-Shift -userId $rlcz_mtnc_userId -groupID $group.id -shiftName "Home office" -StartDate $dateStart -EndDate $dateEnd.AddHours($rlcz_shift_reduction) -color "pink" -teamID $team.id
                            $allshifts += [Object[]] $newshift
                        }
                        #Pokud nemá mít home office
                        else {
                            Write-Debug("{0}: {1} isn't supposed to have home-office today" -f $dayDate, $rlcz_mtnc_email)
                            #Dostane zkrácenou office směnu
                            $newshift = Set-Shift -userId $rlcz_mtnc_userId -groupID $group.id -shiftName "Office" -StartDate $dateStart -EndDate $dateEnd.AddHours($rlcz_shift_reduction) -color "blue" -teamID $team.id
                            $allshifts += [Object[]] $newshift
                        }
                    }
                }
            }

            $shifts_today = [Object[]] $allshifts | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $dateStart.ToString("yyyy-MM-dd HH:mm") -and $_.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $dateEnd.ToString("yyyy-MM-dd HH:mm") }

            #Pro každý email v množině emailů co mají home office
            Write-Debug("{0}: checking who is supposed to have home-office" -f $dayDate)
            foreach ($ho_email in $ho_emails) {
                #Najdeme ID
                $ho_userId = $(Get-MgUser -Filter "UserPrincipalName eq '$ho_email' or proxyAddresses/any(c:c eq 'smtp:$ho_email')").Id
                Write-Debug("{0}: checking if {1} has a shift planned already" -f $dayDate, $ho_email)

                #Pokud nemá již naplánovanou směnu, naplánujeme home office
                if (((Invoke-HasShift -userID $ho_userId -TestedShifts $shifts_today) -eq $false) -and ((Invoke-HasTimeOff -userID $ho_userId -TestedTimeOff $timeoff_today) -eq $false)) {
                    Write-Debug("{0}: {1} doesn't have a shift planned already" -f $dayDate, $ho_email)
                    $newshift = Set-Shift -userId $ho_userId -groupID $group.id -shiftName "Home office" -StartDate $dateStart -EndDate $dateEnd -color "pink" -teamID $team.id
                    $allshifts += [Object[]] $newshift
                }
                else {
                    Write-Debug("{0}: {1} has a shift planned already" -f $dayDate, $ho_email)
                }
            }

            $shifts_today = [Object[]] $allshifts | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $dateStart.ToString("yyyy-MM-dd HH:mm") -and $_.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $dateEnd.ToString("yyyy-MM-dd HH:mm") }

            Write-Debug("{0}: checking who is supposed to have on-site" -f $dayDate)
            foreach ($os_email in $os_emails) {
                $os_userId = $(Get-MgUser -Filter "UserPrincipalName eq '$os_email' or proxyAddresses/any(c:c eq 'smtp:$os_email')").Id
                Write-Debug("{0}: checking if {1} has a shift planned already" -f $dayDate, $os_email)

                #Pokud nemá již naplánovanou směnu, naplánujeme on-site
                if (((Invoke-HasShift -userID $os_userId -TestedShifts $shifts_today) -eq $false) -and ((Invoke-HasTimeOff -userID $os_userId -TestedTimeOff $timeoff_today) -eq $false)) {
                    Write-Debug("{0}: {1} doesn't have a shift planned already, setting on-site shift" -f $dayDate, $os_email)
                    $newshift = Set-Shift -userId $os_userId -groupID $group.id -shiftName "On-site" -StartDate $dateStart -EndDate $dateEnd -color "gray" -teamID $team.id
                    $allshifts += [Object[]] $newshift
                }
                else {
                    Write-Debug("{0}: {1} has a shift planned already, can't set on-site shift" -f $dayDate, $os_email)
                }
            }

            $shifts_today = [Object[]] $allshifts | Where-Object -Filter { $_.schedulingGroupId -eq $group.Id -and $_.SharedShift.StartDateTime.ToString("yyyy-MM-dd HH:mm") -ge $dateStart.ToString("yyyy-MM-dd HH:mm") -and $_.SharedShift.EndDateTime.ToString("yyyy-MM-dd HH:mm") -le $dateEnd.ToString("yyyy-MM-dd HH:mm") }

            Write-Debug("{0}: searching for whomever still doesn't have a shift, to give them an office shift" -f $dayDate)
            foreach ($email in $allemails) {
                $email_userId = $(Get-MgUser -Filter "UserPrincipalName eq '$email' or proxyAddresses/any(c:c eq 'smtp:$email')").Id
                Write-Debug("{0}: checking if {1} has a shift planned already" -f $dayDate, $email)

                #Pokud ještě nemá směnu...
                if (((Invoke-HasShift -userID $email_userId -TestedShifts $shifts_today) -eq $false) -and ((Invoke-HasTimeOff -userID $email_userId -TestedTimeOff $timeoff_today) -eq $false)) {
                    Write-Debug("{0}: {1} doesn't have a shift planned yet" -f $dayDate, $email)
                    #A pokud není v seznamu těch, co směnu mít dnes nemají...
                    if ($email -notin $ns_emails) {
                        Write-Debug("{0}: {1} is not on a list of no-shift emails for today, setting office shift" -f $dayDate, $email)
                        
                        #Nastavíme office směnu
                        $newshift = Set-Shift -userId $email_userId -groupID $group.id -shiftName "Office" -StartDate $dateStart -EndDate $dateEnd -color "blue" -teamID $team.id
                        $allshifts += [Object[]] $newshift
                    }
                    else {
                        Write-Debug("{0}: {1} isn't supposed to have a shift today, not setting a shift" -f $dayDate, $email)
                    }
                }
                else {
                    Write-Debug("{0}: {1} has a shift planned already, can't set office shift" -f $dayDate, $email)
                }
            }
        }
    }

    $params = @{
        notifyTeam    = $false
        startDateTime = [System.DateTime]::Parse($startSpanDate.ToString("yyyy-MM-dd'T'HH:mm:ssZ"))
        endDateTime   = [System.DateTime]::Parse($endSpanDate.ToString("yyyy-MM-dd'T'HH:mm:ssZ"))
    }

    Invoke-MgShareTeamSchedule -TeamId $team.Id -BodyParameter $params -Headers @{ "MS-APP-ACTS-AS" = $userIdAdmin }
    Write-Debug ("SHARING: {0}" -f $scheduleGroupName)
    ("SHARING: {0}" -f $scheduleGroupName) | Add-Content -Path $logPath

}
catch {
    $_
    break;
}