fix(scoop-import): Use foreach instead of ForEach-Object for nullity check (#5034)

* Add nullity check and alread_in_local_bucket check

* update CHANGELOG

* Use foreach instead of ForEach-Object

* changelog

* update help

* refine the info and warning when adding an already-added bucket

* Update lib/buckets.ps1

Make warning clearer

Co-authored-by: Rashil Gandhi <46838874+rashil2000@users.noreply.github.com>

Co-authored-by: Rashil Gandhi <rashil2000@gmail.com>
Co-authored-by: Rashil Gandhi <46838874+rashil2000@users.noreply.github.com>

Author: zStruCat

CHANGELOG.md

@@ -5,7 +5,7 @@
 - **chore:** Add missing -a/--all param to all commands ([#5004](https://github.com/ScoopInstaller/Scoop/issues/5004))
 - **scoop-status:** Check bucket status, improve output ([#5011](https://github.com/ScoopInstaller/Scoop/issues/5011))
 - **scoop-info:** Show app installed/download size ([#4886](https://github.com/ScoopInstaller/Scoop/issues/4886))
-- **scoop-import:** Import a Scoop installation from JSON ([#5014](https://github.com/ScoopInstaller/Scoop/issues/5014))
+- **scoop-import:** Import a Scoop installation from JSON ([#5014](https://github.com/ScoopInstaller/Scoop/issues/5014), [#5034](https://github.com/ScoopInstaller/Scoop/issues/5034))
 
 ### Bug Fixes
 

lib/buckets.ps1

@@ -120,7 +120,7 @@ function add_bucket($name, $repo) {
 
     $dir = Find-BucketDirectory $name -Root
     if (Test-Path $dir) {
-        warn "The '$name' bucket already exists. Use 'scoop bucket rm $name' to remove it."
+        warn "The '$name' bucket already exists. To add this bucket again, first remove it by running 'scoop bucket rm $name'."
         return 2
     }
 

libexec/scoop-import.ps1

@@ -1,5 +1,7 @@
 # Usage: scoop import <path/url to scoopfile.json>
 # Summary: Imports apps, buckets and configs from a Scoopfile in JSON format
+# Help: To replicate a Scoop installation from a file stored on Desktop, run
+#      scoop import Desktop\scoopfile.json
 
 param(
     [Parameter(Mandatory)]
@@ -21,18 +23,18 @@ if (Test-Path $scoopfile) {
 
 if (!$import) { abort 'Input file not a valid JSON.' }
 
-$import.config.PSObject.Properties | ForEach-Object {
-    set_config $_.Name $_.Value | Out-Null
-    Write-Host "'$($_.Name)' has been set to '$($_.Value)'"
+foreach ($item in $import.config.PSObject.Properties) {
+    set_config $item.Name $item.Value | Out-Null
+    Write-Host "'$($item.Name)' has been set to '$($item.Value)'"
 }
 
-$import.buckets | ForEach-Object {
-    add_bucket $_.Name $_.Source | Out-Null
-    $bucket_names += $_.Name
+foreach ($item in $import.buckets) {
+    add_bucket $item.Name $item.Source | Out-Null
+    $bucket_names += $item.Name
 }
 
-$import.apps | ForEach-Object {
-    $info = $_.Info -Split ', '
+foreach ($item in $import.apps) {
+    $info = $item.Info -Split ', '
     $global = if ('Global install' -in $info) {
         ' --global'
     } else {
@@ -46,17 +48,17 @@ $import.apps | ForEach-Object {
         ''
     }
 
-    $app = if ($_.Source -in $bucket_names) {
-        "$($_.Source)/$($_.Name)"
-    } elseif ($_.Source -eq '<auto-generated>') {
-        "$($_.Name)@$($_.Version)"
+    $app = if ($item.Source -in $bucket_names) {
+        "$($item.Source)/$($item.Name)"
+    } elseif ($item.Source -eq '<auto-generated>') {
+        "$($item.Name)@$($item.Version)"
     } else {
-        $_.Source
+        $item.Source
     }
 
     & "$PSScriptRoot\scoop-install.ps1" $app$global$arch
 
     if ('Held package' -in $info) {
-        & "$PSScriptRoot\scoop-hold.ps1" $($_.Name)$global
+        & "$PSScriptRoot\scoop-hold.ps1" $($item.Name)$global
     }
 }