Create git worktree from powershell

Git-Worktree.ps1

function Git-Worktree {
   [CmdletBinding()] 
	Param(
		[Parameter(Mandatory=$true)]
		[string]$BranchName,		
		[Parameter(Mandatory=$false)]
		[switch]$Delete,
		[Parameter(Mandatory=$false)]
		[switch]$Current
	)

	function Resolve-GitRoot {
		$dotGitpath = git rev-parse --path-format=absolute --git-common-dir #includes '.git' at the end
		$gitTopLevel = Split-Path -Path $dotGitpath -Parent
		if ($LASTEXITCODE -eq 0 -and $gitTopLevel) {
			return $gitTopLevel
		} else {
			Write-Error "Not inside a git repository or unable to find the git repository root."
			throw "Not a git repository (or any of the parent directories)"
		}
	}

	try {
		$gitRoot = Resolve-GitRoot
	}
	catch {
		Write-Error "Error: $($_.Exception.Message)"
	}

	if ($BranchName -eq 'list') {
	    git worktree list
	    return;
	}

	if($BranchName -eq 'master') {
		Write-Output "Switching to the root of the repository for main branch 'master' at '$gitRoot'"
		Set-Location -Path $gitRoot
		return
	}

	function Get-GitWorktrees {
		$worktrees = git worktree list --porcelain | Where-Object { $_ -match '^worktree (.+)' } | ForEach-Object {
			$Matches[1].Replace('\', '/')
		}
		return $worktrees
	}

	$existingWorktreePaths = Get-GitWorktrees
	$worktreePath = Join-Path $gitRoot '.worktrees' $BranchName
	if ($Delete) {
		if (Test-Path -Path $worktreePath) {
			try {
				Write-Output "Switching to root"
				Set-Location -Path $gitRoot
				git worktree remove $worktreePath
				if ($LASTEXITCODE -ne 0) {
				    throw "Could not remove worktree"
				}
				if (Test-Path -Path $worktreePath){
					Remove-Item $worktreePath -Recurse
					Write-Host "'$worktreePath' folder removed successfully."
				}
				Write-Output "Worktree for branch '$BranchName' has been removed."
			} catch {
				Write-Error "Error: Failed to remove worktree for branch '$BranchName' at '$worktreePath'."
			}
		} else {
			Write-Output "No worktree for branch '$BranchName' at '$worktreePath' exists to remove."
		}
		return
	} 

    $normalizedWorktreePath = $worktreePath.Replace('\', '/')
	if ($existingWorktreePaths -like "*$normalizedWorktreePath*") {
		Write-Output "Worktree for branch '$BranchName' already exists at '$worktreePath'. Switching to that directory."
		Set-Location -Path $worktreePath
		return
	}
		
	function Create-GitWorktree {
		param (
			[string]$BranchName,
			[string]$WorktreePath,
			[switch]$Current
		)

		git show-ref --quiet -- "refs/heads/$BranchName"
		$branchExists = $LASTEXITCODE -eq 0

		if (-not $branchExists) {
			git ls-remote --quiet --exit-code origin "refs/heads/$BranchName" > $null
			$branchExists = $LASTEXITCODE -eq 0
		}
		
		if ($branchExists) {
            git worktree add $worktreePath $branchName
        } else {
			$checkoutBranch = $Current ? $null : ($branchExists ? $BranchName : 'master')
            git worktree add -b $branchName $worktreePath $checkoutBranch
        }

		if ($LASTEXITCODE -ne 0) {
			throw "Could not add new worktree for branch '$BranchName' at '$worktreePath'."
		}
	}
	
	try {
	    Create-GitWorktree -BranchName $BranchName -WorktreePath $worktreePath -Current $Current

		Write-Output "Worktree for branch '$BranchName' successfully created at '$worktreePath'."
		Set-Location -Path $worktreePath
	}
	catch {
		Write-Error "Error: Failed to create worktree for branch '$BranchName' and path '$worktreePath'."
	}
}
Set-Alias worktree Git-Worktree
Set-Alias gw Git-Worktree