Function Update-AliasesInPSD1 {
<#
.SYNOPSIS
    Concatenates all the aliases from Get-Aliases for insertion into the PSD1 file referenced.

.EXAMPLE
    Update-AliasesInPSD1 .\Alkami.PowerShell.IIS\Public .\Alkami.PowerShell.IIS\Alkami.PowerShell.IIS.psd1

.PARAMETER FolderPath
    The name of the folder to examine all files under.

.PARAMETER Psd1FilePath
    The file to be rewritten. (This is called out in case more than one .psd1 file exists in a folder.)
#>
    [CmdletBinding()]
    Param (
        [String]$FolderPath,
        [String]$Psd1FilePath
    )
    process {
        $aliasNames = @(Get-Aliases $FolderPath) | Sort-Object

        if ($aliasNames.Count -eq 0) {
            return
        }

        $toBeJoinedAliases = @()

        foreach($name in $aliasNames) {
            $toBeJoinedAliases += "'$name'"
        }

        $joinedAliases = $toBeJoinedAliases -Join ','

        $contents = (Get-Content $Psd1FilePath)
        $newContents = @()

        $foundAliasesLine = $false
        foreach($line in $contents) {
            if ($line.Trim().StartsWith("AliasesToExport")) {
                $splits = $line -split '='
                $line = $splits[0].TrimEnd() + " = $joinedAliases"
                $foundAliasesLine = $true
            }
            $newContents += $line
        }

        if (!$foundAliasesLine) {
            $newContents = @()
            ## We couldn't find an existing aliases line in that PSD1, so we need to add one.
            ## We are gonna add it after FunctionsToExport
            foreach($line in $contents) {
                $newContents += $line
                if ($line.Trim().StartsWith("FunctionsToExport")) {
                    $splits = $line -split '='
                    $newLine = $splits[0].TrimEnd().Replace('FunctionsToExport','AliasesToExport') + " = $joinedAliases"

                    $newContents += $newLine
                }
            }
        }

        Set-Content -Path $Psd1FilePath -Value $newContents
    }
}