Add targetColumnMap to FieldMetadata (#1863)

* Add targetColumnMap to FieldMetadata

* fix

* remove console.log

* fix test

server/src/metadata/field-metadata/field-metadata.util.ts

@@ -1,3 +1,9 @@
+import { v4 } from 'uuid';
+
+import { uuidToBase36 } from 'src/metadata/data-source/data-source.util';
+
+import { FieldMetadataTargetColumnMap } from './field-metadata.entity';
+
 /**
  * Generate a column name from a field name removing unsupported characters.
  *
@@ -7,3 +13,38 @@
 export function generateColumnName(name: string): string {
   return name.toLowerCase().replace(/ /g, '_');
 }
+
+/**
+ * Generate a target column map for a given type, this is used to map the field to the correct column(s) in the database.
+ * This is used to support fields that map to multiple columns in the database.
+ *
+ * @param type string
+ * @returns FieldMetadataTargetColumnMap
+ */
+export function generateTargetColumnMap(
+  type: string,
+): FieldMetadataTargetColumnMap {
+  switch (type) {
+    case 'text':
+    case 'phone':
+    case 'email':
+    case 'number':
+    case 'boolean':
+    case 'date':
+      return {
+        value: uuidToBase36(v4()),
+      };
+    case 'url':
+      return {
+        text: uuidToBase36(v4()),
+        link: uuidToBase36(v4()),
+      };
+    case 'money':
+      return {
+        amount: uuidToBase36(v4()),
+        currency: uuidToBase36(v4()),
+      };
+    default:
+      throw new Error(`Unknown type ${type}`);
+  }
+}