Replace or add .INI file content - powershell

Question

Need to update a .INI file across multiple computers and change the contents. I have the following script that works:
(Get-Content SDA_Apps.ini) | Foreach-Object {
$_ -replace "UserName=.+", "UserName=Test" `
-replace "UserEmail=.+", "UserEmail=test#test.com" `
-replace "UserNo=.+", "UserNo=1234" `
-replace "UserKey=.+", "UserKey=^%&$*$778-" `
-replace "KEM=.+", "KEM=H10"
} | Set-Content SDA_Apps.ini
Sometimes those lines of text do not exist and I need to add the text instead of replace it.
This is my attempt to do this - without success:
function setConfig( $file, $key1, $value1, $key2, $value2 ) {
$content = Get-Content $file
if ( $content -match "^$key\s*=" ) {
$content $_ -replace "^$key1\s*=.*", "$key1=$value1" -replace "^$key2\s*=.*", "$key2=$value2"|
Set-Content $file
} else {
Add-Content $file "$key1 = $value1"
Add-Content $file "$key2 = $value2"
}
}
setConfig "SDA_Apps.ini" "UserName" "Test" "UserEmail" "test#test.com"

Answer 1

I rewrote your function and renamed it to reflect what it actualy does Set-OrAddIniValue:
function Set-OrAddIniValue
{
Param(
[string]$FilePath,
[hashtable]$keyValueList
)
$content = Get-Content $FilePath
$keyValueList.GetEnumerator() | ForEach-Object {
if ($content -match "^$($_.Key)=")
{
$content= $content -replace "^$($_.Key)=(.*)", "$($_.Key)=$($_.Value)"
}
else
{
$content += "$($_.Key)=$($_.Value)"
}
}
$content | Set-Content $FilePath
}
The benefit of this function is that you can pass a key-value list as a hashtable to it. It reads the ini file only once, updates the content and saves it back. Here is an usage example:
Set-OrAddIniValue -FilePath "c:\yourinipath.ini" -keyValueList #{
UserName = "myName"
UserEmail = "myEmail"
UserNewField = "SeemsToWork"
}