Public/Remove-TiPSImportFromPowerShellProfile.ps1

function Remove-TiPSImportFromPowerShellProfile
{
<#
    .SYNOPSIS
    Removes the tiPS Import-Module statement from the user's PowerShell profile file.
 
    .DESCRIPTION
    This function edits the user's PowerShell profile file to remove the Import-Module statement that is
    used to import the tiPS module. If the profile does not import the tiPS module, then no changes are made.
    Only the default PowerShell profile paths are searched to see if the tiPS module is imported; if
    it is imported from a dot-sourced script, the function will not detect the import statement and it will
    not be removed.
 
    This function will only remove the tiPS import statement added by the Add-TiPSImportToPowerShellProfile
    function. If you manually added the import statement to your profile, this function may not remove it.
 
    .INPUTS
    None. You cannot pipe objects to the function.
 
    .OUTPUTS
    None. The function does not return any objects.
 
    .EXAMPLE
    Remove-TiPSImportFromPowerShellProfile
 
    This example edits the PowerShell profile to remove the tiPS Import-Module statement.
#>

    [CmdletBinding(SupportsShouldProcess = $true)]
    [OutputType([void])]
    Param()

    Process
    {
        [bool] $moduleImportStatementIsInProfile = Test-PowerShellProfileImportsTiPS
        if (-not $moduleImportStatementIsInProfile)
        {
            Write-Verbose "The PowerShell profiles do not import the tiPS module, so no changes are necessary."
            return
        }

        [string[]] $profileFilePathsThatExist = GetPowerShellProfileFilePathsThatExist
        [string] $contentToRemoveFromProfile = GetImportStatementToAddToPowerShellProfile

        [bool] $atLeastOneProfileFileModified = $false
        foreach ($profileFilePath in $profileFilePathsThatExist)
        {
            [string] $fileContents = Get-Content -Path $profileFilePath -Raw
            if ($fileContents.Contains($contentToRemoveFromProfile))
            {
                if ($PSCmdlet.ShouldProcess("PowerShell profile '$profileFilePath'", 'Update'))
                {
                    Write-Verbose "Removing '$contentToRemoveFromProfile' from PowerShell profile '$profileFilePath'."
                    [string] $updatedFileContents = $fileContents -replace $contentToRemoveFromProfile, ''
                    Set-Content -Path $profileFilePath -Value $updatedFileContents -Force
                }

                $atLeastOneProfileFileModified = $true
            }
        }

        if (-not $atLeastOneProfileFileModified)
        {
            Write-Warning "One of the PowerShell profiles does import the tiPS module, but not with the expected import statement '$contentToRemoveFromProfile'. Run 'Test-PowerShellProfileImportsTiPS -Verbose' to see which profile files import the tiPS module, and then manually remove the statement from the file."
        }
    }
}