Add name validation for slot creation dialog, AB#1993990

Author: Flanker32

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-appservice/src/main/java/com/microsoft/azure/toolkit/intellij/legacy/function/runner/deploy/ui/components/DeploymentSlotCreationDialog.java

@@ -11,6 +11,7 @@
 import com.microsoft.azure.toolkit.intellij.common.AzureTextInput;
 import com.microsoft.azure.toolkit.lib.common.form.AzureForm;
 import com.microsoft.azure.toolkit.lib.common.form.AzureFormInput;
+import com.microsoft.azure.toolkit.lib.common.form.AzureValidationInfo;
 import org.apache.commons.lang3.StringUtils;
 import org.jetbrains.annotations.Nullable;
 
@@ -20,23 +21,29 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import static com.microsoft.azure.toolkit.intellij.common.AzureBundle.message;
+import static com.microsoft.intellij.util.ValidationUtils.isValidAppServiceName;
+
 public class DeploymentSlotCreationDialog extends AzureDialog<DeploymentSlotConfig> implements AzureForm<DeploymentSlotConfig> {
     private static final String DO_NOT_CLONE_SETTINGS = "Do not clone settings";
     private static final String PARENT = "parent";
 
     private AzureTextInput txtName;
     private AzureComboBox<String> cbConfigurationSource;
     private JPanel pnlRoot;
+    private final List<DeploymentSlotConfig> existingSlots;
 
     public DeploymentSlotCreationDialog(@Nullable Project project, @Nonnull List<DeploymentSlotConfig> existingSlots) {
         super(project);
+        this.existingSlots = existingSlots;
         $$$setupUI$$$();
         this.cbConfigurationSource.setItemsLoader(() -> {
             final List<String> collect = existingSlots.stream().map(DeploymentSlotConfig::getName).collect(Collectors.toList());
             collect.add(0, PARENT);
             collect.add(DO_NOT_CLONE_SETTINGS);
             return collect;
         });
+        this.txtName.addValidator(this::validateDeploymentSlotName);
         super.init();
     }
 
@@ -76,6 +83,24 @@ public List<AzureFormInput<?>> getInputs() {
         return Arrays.asList(txtName, cbConfigurationSource);
     }
 
+    private AzureValidationInfo validateDeploymentSlotName() {
+        final String value = txtName.getValue();
+        if (StringUtils.isEmpty(value)) {
+            return AzureValidationInfo.error(message("appService.name.validate.empty"), txtName);
+        }
+        if (value.length() < 2 || value.length() > 60) {
+            return AzureValidationInfo.error(message("appService.name.validate.length"), txtName);
+        }
+        if (!isValidAppServiceName(value)) {
+            return AzureValidationInfo.error(message("appService.name.validate.invalidName"), txtName);
+        }
+        final DeploymentSlotConfig existingSlot = existingSlots.stream()
+                .filter(slot -> StringUtils.equalsIgnoreCase(slot.getName(), value))
+                .findFirst().orElse(null);
+        return existingSlot == null ? AzureValidationInfo.success(txtName) :
+                AzureValidationInfo.error(String.format("Slot with name (%s) already exists", value), txtName);
+    }
+
     void $$$setupUI$$$() {
     }
 }