feat: export resource data to csv, xlsx

packages/server/src/services/Export/ExportRegistery.ts

@@ -0,0 +1,49 @@
+import { camelCase, upperFirst } from 'lodash';
+import { Exportable } from './Exportable';
+
+export class ExportableRegistry {
+  private static instance: ExportableRegistry;
+  private exportables: Record<string, Exportable>;
+
+  /**
+   * Constructor method.
+   */
+  constructor() {
+    this.exportables = {};
+  }
+
+  /**
+   * Gets singleton instance of registry.
+   * @returns {ExportableRegistry}
+   */
+  public static getInstance(): ExportableRegistry {
+    if (!ExportableRegistry.instance) {
+      ExportableRegistry.instance = new ExportableRegistry();
+    }
+    return ExportableRegistry.instance;
+  }
+
+  /**
+   * Registers the given importable service.
+   * @param {string} resource
+   * @param {Exportable} importable
+   */
+  public registerExportable(resource: string, importable: Exportable): void {
+    const _resource = this.sanitizeResourceName(resource);
+    this.exportables[_resource] = importable;
+  }
+
+  /**
+   * Retrieves the importable service instance of the given resource name.
+   * @param {string} name
+   * @returns {Exportable}
+   */
+  public getExportable(name: string): Exportable {
+    const _name = this.sanitizeResourceName(name);
+    return this.exportables[_name];
+  }
+
+  private sanitizeResourceName(resource: string) {
+    return upperFirst(camelCase(resource));
+  }
+}