Revert "initial commit"

This reverts commit 2d23eba148.

lib/services/metadata-accessor.service.ts

@@ -0,0 +1,40 @@
+import { Injectable } from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import {
+  SCENE_METADATA,
+  LISTENERS_METADATA,
+  UPDATE_METADATA,
+  WIZARD_STEP_METADATA,
+} from '../telegraf.constants';
+import {
+  ListenerMetadata,
+  SceneMetadata,
+  WizardStepMetadata,
+} from '../interfaces';
+
+@Injectable()
+export class MetadataAccessorService {
+  constructor(private readonly reflector: Reflector) {}
+
+  isUpdate(target: Function): boolean {
+    if (!target) return false;
+    return !!this.reflector.get(UPDATE_METADATA, target);
+  }
+
+  isScene(target: Function): boolean {
+    if (!target) return false;
+    return !!this.reflector.get(SCENE_METADATA, target);
+  }
+
+  getListenerMetadata(target: Function): ListenerMetadata[] | undefined {
+    return this.reflector.get(LISTENERS_METADATA, target);
+  }
+
+  getSceneMetadata(target: Function): SceneMetadata | undefined {
+    return this.reflector.get(SCENE_METADATA, target);
+  }
+
+  getWizardStepMetadata(target: Function): WizardStepMetadata | undefined {
+    return this.reflector.get(WIZARD_STEP_METADATA, target);
+  }
+}