public/Test-UcmSFBOConnection.ps1

#PerformScriptSigning
Function Test-UcmSFBOConnection
{
    <#
            .SYNOPSIS
            Checks to see if we are connected to an SFBO session
 
            .DESCRIPTION
            Tries to pull tenant info and will call New-SFBOConnection if unsucsessful
 
            .EXAMPLE
            Test-UcmSFBOConnection
 
            .INPUTS
            This function does not accept any input
 
            .OUTPUT
            This Cmdet returns a PSCustomObject with multiple keys to indicate status
            $Return.Status
            $Return.Message
 
            Return.Status can return one of four values
            "OK" : Connected to Skype for Business Online
            "Warning" : Reconnected to Skype for Business Online
            "Error" : Not connected to Skype for Business Online
            "Unknown" : Cmdlet reached the end of the function without returning anything, this shouldnt happen, if it does please log an issue on Github
 
            Return.Message returns descriptive text showing the connected tenant, mainly for logging or reporting
 
            .LINK
            http://www.UcMadScientist.com
            https://github.com/Atreidae/UcmPsTools
 
            .ACKNOWLEDGEMENTS
 
            .NOTES
            Version: 1.1
            Date: 03/04/2021
 
            .VERSION HISTORY
            1.1: Updated to "Ucm" naming convention
            Better inline documentation
 
            1.0: Initial Public Release
 
            .REQUIRED FUNCTIONS/MODULES
            Modules
            Microsoft Teams (Install-Module MicrosoftTeams)
            UcmPSTools (Install-Module UcmPsTools) Includes Cmdlets below.
 
            Cmdlets
            Write-UcmLog: https://github.com/Atreidae/UcmPsTools/blob/main/public/Write-UcmLog.ps1
            New-UcmSFBOConnection https://github.com/Atreidae/UcmPsTools/blob/main/public/New-UcmSFBOConnection.ps1
 
            .REQUIRED PERMISIONS
            'Teams Administrator' or better
 
    #>

    [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseProcessBlockForPipelineCommand', '', Scope='Function')] #todo, https://github.com/Atreidae/UcmPSTools/issues/23

    Param
    (
        [Parameter(ValueFromPipelineByPropertyName=$true, Position=1)] [switch]$Reconnect #Should re allow this from Pipeline?
    )

    #region FunctionSetup, Set Default Variables for HTML Reporting and Write Log
    $function = 'Test-UcmSFBOConnection'
    [hashtable]$Return = @{}
    $return.Function = $function
    $return.Status = "Unknown"
    $return.Message = "Function did not return a status message"

    # Log why we were called
    Write-UcmLog -Message "$($MyInvocation.InvocationName) called with $($MyInvocation.Line)" -Severity 1 -Component $function
    Write-UcmLog -Message "Parameters" -Severity 1 -Component $function -LogOnly
    Write-UcmLog -Message "$($PsBoundParameters.Keys)" -Severity 1 -Component $function -LogOnly
    Write-UcmLog -Message "Parameters Values" -Severity 1 -Component $function -LogOnly
    Write-UcmLog -Message "$($PsBoundParameters.Values)" -Severity 1 -Component $function -LogOnly
    Write-UcmLog -Message "Optional Arguments" -Severity 1 -Component $function -LogOnly
    Write-UcmLog -Message "$Args" -Severity 1 -Component $function -LogOnly

    #endregion FunctionSetup

    #region FunctionWork


    Write-UcmLog -Message "Checking for Existing SFBO Connection" -Severity 1 -Component $function
    $Session =(Get-PSSession | Where-Object {$_.Name -like "SfBPowerShellSession*"})

    If($Session.state -ne "opened") #Skype For Business Session in Broken state
    {
        Write-UcmLog -Message "We dont appear to be connected to Skype for Business Online!" -Severity 3 -Component $function

        If ($Reconnect) #If the user wants us to reconnect
        {
            #Cleanup old session
            Get-PSSession | Where-Object {$_.Name -like "SfBPowerShellSession*"} |Remove-PSSession

            #Call New-UcmSFBOSession
            $Connection = (New-UcmSFBOConnection)

            #Check we actually connected
            If ($Connection.status -eq "Error") #an error was reported
            {
                $Return.Status = "Error"
                $Return.Message  = "Could not reconnect to Skype for Business Online"
                Return $Return
            }
            Else #The connection was succsessful
            {
                $Return.Status = "Warning"
                $Return.Message  = "Reconnected"
                Return $Return
            }
        }
        Else #Reconnect not set
        {
            $Return.Status = "Error"
            $Return.Message  = "Not Connected to SFBO"
            Return $Return
        }
    }
    Else #The session is connected, no need to do anything.
    {
        $Return.Status = "OK"
        $Return.Message  = "Existing Connection"
        Return $Return
    }
    #endregion FunctionWork

    #region FunctionReturn

    #Default Return Variable for my HTML Reporting Function
    Write-UcmLog -Message "Reached end of $function without a Return Statement" -Severity 3 -Component $function
    $return.Status = "Unknown"
    $return.Message = "Function did not encounter return statement"
    Return $Return
    #endregion FunctionReturn
}
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