isolated constructor functions for entities and relations from config

app/src/data/schema/constructor.ts

@@ -0,0 +1,34 @@
+import { transformObject } from "core/utils";
+import { Entity, type Field } from "data";
+import { FIELDS, RELATIONS, type TAppDataEntity, type TAppDataRelation } from "data/data-schema";
+
+export function constructEntity(name: string, entityConfig: TAppDataEntity) {
+   const fields = transformObject(entityConfig.fields ?? {}, (fieldConfig, name) => {
+      const { type } = fieldConfig;
+      if (!(type in FIELDS)) {
+         throw new Error(`Field type "${type}" not found`);
+      }
+
+      const { field } = FIELDS[type as any];
+      const returnal = new field(name, fieldConfig.config) as Field;
+      return returnal;
+   });
+
+   return new Entity(
+      name,
+      Object.values(fields),
+      entityConfig.config as any,
+      entityConfig.type as any
+   );
+}
+
+export function constructRelation(
+   relationConfig: TAppDataRelation,
+   resolver: (name: Entity | string) => Entity
+) {
+   return new RELATIONS[relationConfig.type].cls(
+      resolver(relationConfig.source),
+      resolver(relationConfig.target),
+      relationConfig.config
+   );
+}