Added argument name equal cf error

ui-ngx/src/app/modules/home/components/calculated-fields/components/panel/calculated-field-argument-panel.component.html

@@ -55,6 +55,14 @@
                       class="tb-error">
               warning
             </mat-icon>
+          } @else if (argumentFormGroup.get('argumentName').touched && argumentFormGroup.get('argumentName').hasError('equalCtx')) {
+            <mat-icon matSuffix
+                      matTooltipPosition="above"
+                      matTooltipClass="tb-error-tooltip"
+                      [matTooltip]="'calculated-fields.hint.argument-name-ctx' | translate"
+                      class="tb-error">
+              warning
+            </mat-icon>
           }
         </mat-form-field>
       </div>

ui-ngx/src/app/modules/home/components/calculated-fields/components/panel/calculated-field-argument-panel.component.ts

@@ -64,7 +64,7 @@ export class CalculatedFieldArgumentPanelComponent implements OnInit {
   readonly defaultLimit = Math.floor(this.maxDataPointsPerRollingArg / 10);
 
   argumentFormGroup = this.fb.group({
-    argumentName: ['', [Validators.required, this.uniqNameRequired(), Validators.pattern(/^(?!ctx$).+$/), Validators.pattern(charsWithNumRegex), Validators.maxLength(255)]],
+    argumentName: ['', [Validators.required, this.uniqNameRequired(), this.notEqualCtxValidator(), Validators.pattern(charsWithNumRegex), Validators.maxLength(255)]],
     refEntityId: this.fb.group({
       entityType: [ArgumentEntityType.Current],
       id: ['']
@@ -237,6 +237,13 @@ export class CalculatedFieldArgumentPanelComponent implements OnInit {
     }
   }
 
+  private notEqualCtxValidator(): ValidatorFn {
+    return (control: FormControl) => {
+      const trimmedValue = control.value.trim().toLowerCase();
+      return trimmedValue === 'ctx' ? { equalCtx: true } : null;
+    };
+  }
+
   private observeUpdatePosition(): void {
     merge(
       this.refEntityIdFormGroup.get('entityType').valueChanges,

ui-ngx/src/assets/locale/locale.constant-en_US.json

@@ -1070,6 +1070,7 @@
             "argument-name-pattern": "Argument name is invalid.",
             "argument-name-duplicate": "Argument with such name already exists.",
             "argument-name-max-length": "Argument name should be less than 256 characters.",
+            "argument-name-ctx": "Argument name 'ctx' is reserved and cannot be used.",
             "argument-type-required": "Argument type is required.",
             "max-args": "Maximum number of arguments reached.",
             "decimals-range": "Decimals by default should be a number between 0 and 15.",