Powershell Copy-Item Rename If File Exists - powershell

Question

I am using this code I found on this site in a script to copy PST files and rename the duplicate. My question and the problem I am having with it is that when it renames the .pst it continues to increment the number.
For example, if it finds a file named "test.pst" it will copy it as is. If it finds another file also named "test.pst", it will copy it and rename it "test-1.pst" which is fine. However, if it finds two files named "test2.pst" it will copy the first one as "test2.pst" and copy and rename the second one to "test2-2.pst" instead of "test2-1.pst".
Do you have any suggestions on how I can modify my code so that it will start numbering each new duplicate file with 1 (test3-1.pst, test4-1.pst, etc)?
$csv = import-csv .\test.csv
foreach ($line in $csv) {
New-Item c:\new-pst\$($line.username) -type directory
$dest = "c:\new-pst\$($line.username)"
$i=1
Get-ChildItem -Path $line.path -Filter *.pst -Recurse | ForEach-Object {
$nextName = Join-Path -Path $dest -ChildPath $_.name
while(Test-Path -Path $nextName)
{
$nextName = Join-Path $dest ($_.BaseName + "_$i" + $_.Extension)
$i++
}
$_ | copy-Item -Destination $nextName -verbose
}
}

Answer 1

You'll need to reset the counter:
$csv = import-csv .\test.csv
foreach ($line in $csv) {
New-Item c:\new-pst\$($line.username) -type directory
$dest = "c:\new-pst\$($line.username)"
Get-ChildItem -Path $line.path -Filter *.pst -Recurse | ForEach-Object {
$i=1 # Note the position of the initializer
$nextName = Join-Path -Path $dest -ChildPath $_.name
while(Test-Path -Path $nextName)
{
$nextName = Join-Path $dest ($_.BaseName + "_$i" + $_.Extension)
$i++
}
$_ | copy-Item -Destination $nextName -verbose
}
}

Answer 2

Moving my comment to an answer. You need to move the $i = 1 line to inside your ForEach loop as such:
$csv = import-csv .\test.csv
foreach ($line in $csv) {
New-Item c:\new-pst\$($line.username) -type directory
$dest = "c:\new-pst\$($line.username)"
Get-ChildItem -Path $line.path -Filter *.pst -Recurse | ForEach-Object {
$i=1
$nextName = Join-Path -Path $dest -ChildPath $_.name
while(Test-Path -Path $nextName)
{
$nextName = Join-Path $dest ($_.BaseName + "_$i" + $_.Extension)
$i++
}
$_ | copy-Item -Destination $nextName -verbose
}
}