1 files changed, 64 insertions, 0 deletions
diff --git a/catalog-ui/src/app/utils/filter-constraint-helper.ts b/catalog-ui/src/app/utils/filter-constraint-helper.ts
new file mode 100644
index 0000000000..bdb3f9ec7a
--- /dev/null
+++ b/catalog-ui/src/app/utils/filter-constraint-helper.ts
@@ -0,0 +1,64 @@
+import {FilterConstraint} from "../models/filter-constraint";
+import {ToscaFunctionType} from "../models/tosca-function-type.enum";
+import {ToscaConcatFunction} from "../models/tosca-concat-function";
+import {ToscaGetFunction} from "../models/tosca-get-function";
+import {YamlFunction} from "../models/yaml-function";
+import {CapabilityFilterConstraint} from "../models/capability-filter-constraint";
+
+export class FilterConstraintHelper {
+
+    public static buildFilterConstraintLabel(constraint: FilterConstraint | CapabilityFilterConstraint): string {
+        let value;
+        if (this.isValueToscaFunction(constraint.value)) {
+            switch (constraint.value.type) {
+                case ToscaFunctionType.CONCAT:
+                    value = new ToscaConcatFunction(constraint.value).buildValueString();
+                    break;
+                case ToscaFunctionType.GET_PROPERTY:
+                case ToscaFunctionType.GET_INPUT:
+                case ToscaFunctionType.GET_ATTRIBUTE:
+                    value = new ToscaGetFunction(constraint.value).buildValueString();
+                    break;
+                case ToscaFunctionType.YAML:
+                    value = new YamlFunction(constraint.value).buildValueString();
+                    break;
+                case ToscaFunctionType.STRING:
+                    value = constraint.value.value;
+                    break;
+                default:
+                    value = JSON.stringify(constraint.value, null, 4);
+            }
+        } else {
+            value = JSON.stringify(constraint.value, null, 4);
+        }
+        if (constraint instanceof CapabilityFilterConstraint) {
+            return `${constraint.capabilityName}: ${constraint.servicePropertyName} ${this.convertToSymbol(constraint.constraintOperator)} ${value}`;
+        }
+
+        return `${constraint.servicePropertyName} ${this.convertToSymbol(constraint.constraintOperator)} ${value}`;
+    }
+
+    public static convertToSymbol(constraintOperator: string) {
+        switch (constraintOperator) {
+            case OPERATOR_TYPES.LESS_THAN: return '<';
+            case OPERATOR_TYPES.EQUAL: return '=';
+            case OPERATOR_TYPES.GREATER_THAN: return '>';
+            case OPERATOR_TYPES.GREATER_OR_EQUAL: return '>=';
+            case OPERATOR_TYPES.LESS_OR_EQUAL: return '<=';
+        }
+    }
+
+    private static isValueToscaFunction(value: any): boolean {
+        return value instanceof Object && 'type' in value && (<any>Object).values(ToscaFunctionType).includes(value.type);
+    }
+
+}
+
+export const OPERATOR_TYPES = {
+    EQUAL: 'equal',
+    GREATER_THAN: 'greater_than',
+    LESS_THAN: 'less_than',
+    GREATER_OR_EQUAL: 'greater_or_equal',
+    LESS_OR_EQUAL: 'less_or_equal'
+};
+