fix: correct region array syntax in randomize scripts

- Improve existence check to properly handle missing vs empty AZURE_LOCATION

Author: dbarkol

scripts/randomize-region.ps1

@@ -4,11 +4,13 @@
 
 # Check if AZURE_LOCATION is already set
 $existingLocation = azd env get-value AZURE_LOCATION 2>$null
+$locationExists = $LASTEXITCODE -eq 0
 
-if ($existingLocation) {
+if ($locationExists -and $existingLocation) {
     Write-Host "ℹ️  AZURE_LOCATION is already set to: $existingLocation" -ForegroundColor Cyan
     Write-Host "   Keeping existing location. To change, run: azd env set AZURE_LOCATION <region>" -ForegroundColor Gray
 } else {
+    # Variable doesn't exist or is empty - randomize
     $regions = @("westus2", "westus3", "eastus2", "northcentralus")
     $selectedRegion = Get-Random -InputObject $regions
 

scripts/randomize-region.sh

@@ -4,14 +4,26 @@
 # without being prompted. Otherwise, azd will prompt you to select a region.
 
 # Check if AZURE_LOCATION is already set
-EXISTING_LOCATION=$(azd env get-value AZURE_LOCATION 2>/dev/null)
+if azd env get-value AZURE_LOCATION >/dev/null 2>&1; then
+    EXISTING_LOCATION=$(azd env get-value AZURE_LOCATION 2>/dev/null)
+    if [ -n "$EXISTING_LOCATION" ]; then
+        echo "ℹ️  AZURE_LOCATION is already set to: $EXISTING_LOCATION"
+        echo "   Keeping existing location. To change, run: azd env set AZURE_LOCATION <region>"
+    else
+        # Variable exists but is empty - randomize
+        REGIONS=("westus2" "westus3" "eastus2" "northcentralus")
+        RANDOM_INDEX=$((RANDOM % 4))
+        SELECTED_REGION="${REGIONS[$RANDOM_INDEX]}"
 
-if [ -n "$EXISTING_LOCATION" ]; then
-    echo "ℹ️  AZURE_LOCATION is already set to: $EXISTING_LOCATION"
-    echo "   Keeping existing location. To change, run: azd env set AZURE_LOCATION <region>"
+        echo "🎲 Randomly selected region: $SELECTED_REGION"
+        azd env set AZURE_LOCATION "$SELECTED_REGION"
+        echo "✅ Region set. Run 'azd provision' to deploy without being prompted."
+        echo "   To change: azd env set AZURE_LOCATION <region>"
+    fi
 else
-    REGIONS=("westus2" "westus3" "eastus2", "northcentralus")
-    RANDOM_INDEX=$((RANDOM % 3))
+    # Variable doesn't exist - randomize
+    REGIONS=("westus2" "westus3" "eastus2" "northcentralus")
+    RANDOM_INDEX=$((RANDOM % 4))
     SELECTED_REGION="${REGIONS[$RANDOM_INDEX]}"
 
     echo "🎲 Randomly selected region: $SELECTED_REGION"